Патент USA US2131822код для вставки
Oct. 4, 1938. H. A. SCHMIDT V2,131,822 WELL PUMP Filed Sept. 8A, 1936 S. U Z // E_lil 3 Sheets-Sheet l Oct. 4, 1938. H. A. SCHMIDT 2,131,822 WELL PUMP Filed Sept. 8, 1936 w w ß, „i w "75 ,wL;ßw@ ,da \ i LLA l 77 5 Sheets-Sheet 2 Oct. 4, 19.38.l H. A. SCHMIDT 2,131,822 WELL PUMP Filed Sept. 8, 1936 3 Sheets-Sheet 3 www@r 7 „om 5. „„. ,w _f ß M 5 ZM@„W„n _ _ß i@ „Í//OV/0 6 .Y $1 w m 5 // .l. , ,, 2,131,822 Patented Oct. 4, 1938 UNlTEo _STATES PATENT _ OFFICE? WELL PUMP v Herbert A. schmidt, Whittier', oeuf., assigner ef one-half to James V. Keith, Los Angeles, Y Calif. Application September s, 1936, señal Ne. 99,750 15 Claims. (c1. 10s-_190) This invention relates to pumping apparatus and relates more particularly to well pumps. A general object vof this invention is to provide a practical and very efficient double acting well 5 pump. Y v Another object of this invention is to provide a pump for use in oil wells, etc. that is operable to alternately dischargecharges- of liquid and gas into the oil string. ` - i Another object of this‘invention is to provide gitudinal, fragmentary detailed sectional View of the upper portion of the pump illustrated in Fig. 3 showing the plunger latched at the lower end of its stroke. Fig. 5 is a View similar to Fig. 1 illustrating still another form of the invention. 5 Fig. 6 is an enlarged fragmentary longitudinal detailed sectional view of the upper portion of >the pump illustrated in Fig. 6` showing the plung Ver at the lower end of its stroke, and Fig. 'l is an enlarged fragmentary longitudinal sectional Vl0 a deep well pump that assures the eiiicient re view of a ‘slightly modified form of anchor as covery of- the liquid or oil from the well by dis charging a charge of gas into the oilv string fol lowing each oil elevating stroke, which gas ma terially assists in raising the oil to the surface. sembly. Another object of this invention is to provide _a double acting pump of the character mentioned that is adapted to receive gas under pressure that may bepassed into the well from the surface of the ground and that discharges this gas under pressure into the oil string following each oil ele ~ The »present invention is adapted to be em bodied `in Various forms and may be provided in the form of attachments for use with typical `15 well pumps. .In the following detailed disclosure I will described several typical forms and instal lations of the invention, it being understood that the invention is not »to be construed as limited or restricted to the speciiic structures or appli- 20 cations about to be described, but that it is to be taken as including any featuresY orfmodii‘lca Another object of this invention is to provide tions that may fall within the scope of the claims. The embodiment of the present invention illus an improved well pump that is double acting and »trated in-Figs. 1 and‘2 of the drawings includes, 25 that is operable to displace or elevatea charge 25 generally, 'a seat I0 Von the lower end of an oil of liquid during each movement of its plunger. Another object of this invention is to provide rstring S, a pump barrel II; an anchor l2 con an appliance or attachment for a well pump that nected with the barrel‘Ii and cooperating with >renders `the pump double acting therebygreatly the seat I0 to suspend the barrel where it extends vating stroke. increasing its efliciency. Á ` . ` ‘ l Another object of this invention is to provide an appliance or attachment of the character mentioned that may be readily applied to a typ-` ical well pump with a minimum of alteration and `at little cost. . Another object of thisinvention is to provide an attachment or appliance for a typical single ‘acting deep `well pump `that makes the pump double acting and that provides for the alternate pumping oi liquid and gas. The various objects and features of my inven -tion will be fully understood fromV the following beyond the lower end of the string S,`a plunger v30 I3 operable in the barrel Iû to displace liquid upwardly into the string S during'its down stroke and means >Iliwhereby the plunger I3 displaces _gas into the string S during its up stroke. The `seat I0 and the associated parts may be"35 in the form -of an >attachment for application to the lower end of a typical oil string S. The string S is provided to conduct the fluid from the well and >may be madeup of lengths of tubing in the usual manner; The seat IIJ is a tubular member 40 connected with the lower end of the oil string S by a suitable coupling I5. A downwardly and in detailed description of typical preferred forms ~ wardly inclined wall Iâ is provided on the interior and> applications of my invention, throughout of the seat I0. 4An annular downwardly facing which description reference is made to the ac companying drawings, in which: Fig. l is a central longitudinal detailed Sec `tional view of one form of the invention show . shoulder I'I is provided on the‘interior of the seatv45 I0 'below its inclinedwall I6. The shoulder I1 is preferably inclined downwardly and outwardlyr Vas illustrated. In accordancelwith `the invention ing the parts in the operative `positions in the a tubularl section I8 is connectedwith the lower well. Fig. 2 is an enlarged fragmentary longi S end of the'seat I0. `The section I8 may be thread- 50 ed on the lower `portion `of-the seat It] and may tion of the pump illustrated inFig. 1 showing be of substantially the same diameter as the oil the plunger at the lower end of Vits stroke. Fig. lstring S. A_shoe or collar I9'»is` provided on the 3 is a View similar to Fig, 1 illustrating another lower end. ofthe section 4i8 and presents an up wardlyfacing `internal shoulder 20. , 55 form of the invention. Fig. 4 is an enlarged, lon . tudínal detailed sectional view of the upper por 2 2,131,822 An annular or tubular packing assembly 2| is provided in the section I8 and is supported on the shoulder 20. The packing assembly 2| may comprise superimposed rings. Alternate rings of the assembly 2| have inwardly and outwardly convergent ends and the ends of the adjacent rings cooperate whereby the packing assembly tends to expand both inwardly and outwardly when subjected to compression. The lower end of the lowermost ring of the assembly 2| is inclined downwardly and inwardly and cooperates with the shoulder 2|] which may be correspondingly it from the well the cooperation of the upper outer corner of the lock ring 32 with the inclined shoulder I'I results in contraction of the ring so that it passes upwardly through the seat II) allow ing the pump to be withdrawn from the seat I0. In accordance with the invention the anchor I2 is provided with means for packing about the plunger I3. A tubular section 33 is threaded in the upper end of the anchor collar 3U and projects upwardly from the collar. A collar 34 is threaded on the upper end of the section 33 and carries a tubular member 35. A packing assembly 36 simi inclined, as illustrated. A metal ring or follower 22 is provided at the upper end of the packing lar in nature to the packing assembly 2| is ar ranged within the tubular member 35. A gland assembly 2| and its upper end cooperates with or follower 31 is threaded in the upper end of a downwardly facing shoulder 23 on the interior the member 35 to compress the packing assembly of the section I8. The packing assembly 2| is 36. The upper end of the follower 31 may be adapted to be compressed by the collar I9 and is Y open to the interior of the string S to allow the provided to seal between the section I8 and parts fluid pressure or ñuid head in the string to com 20 on the barrel, as will be hereinafter described. press the packing assembly 36. 20 The barrel II constitutes the outer relatively’I The plunger I3 is the reciprocable element of stationary element of the pump proper. The the pump and is operable by a typical pump rod barrel I I is an elongate tubular structure extend R. The plunger I3 extends through the packing ing downwardly from the packing assembly 2| to 25 project into the ñuid of the well. A standing valve V is provided on the lower end of the barrel II. The standing valve V may include a tubular cage 24 having an internal seat 25 and a ball 26 in the cage 24 for seating downwardly on 30 the seat 25. It will be observed that the lower end of the barrel I I carrying the valve V may be unsupported and need not be provided with an anchor or the like. A connecting member 21 is - threaded in the upper end of the barrel I I to fa cilitate its connection with the anchor I2. The barrel II, its valve V and the plunger I3 may be typical well pump parts. The anchor I2 is provided to suspend the barrel II and to hold the barrel against movement. 40 The anchor I2 includes a tubular member 28 threaded on the upper end of the connecting A50 member 21 to extend upwardly through the pack ing assembly 2|. The tubular member 28 ex tends upwardly into the lower end of the seat I0 and its upper portion may be increased in wall thickness. A connecting member 29 is threaded in the upper end of the tubular member 28. An anchor collar 30 is threaded on the upper portion of the connecting member 29 and has its lower end spaced some distanceÀ above the upper end of the tubular member 28. 'I’he anchor collar 30 is provided with a downwardly and inwardly in clined surface 3| adapted to cooperate with the wall I6 of the seat IIJ-to suspend the barrel II from the seat. The cooperation of the surface 3| with the seat wall I6 also prevents fluid from the string S from passing downwardly into the tubular section I8. A split lock ring 32 surrounds the connecting 60 member 29 between the lower end of the anchor collar 30 and the upper end of the tubular mem ber 28. The periphery of the lock ring 32 is assembly 3B, and the various parts of the anchor I2 to extend into the barrel II. The plunger I3 carries the cup leathers or other suitable sealing elements 38 for slidably sealing with the interior of the barrel II. The sealing elements 38 are preferably such that they are eiîective during both strokes of the plunger. Heads 39 may be 30 provided on the plunger I3 at the opposite ends of the assembly of sealing elements 38. 'I'he re ciprocating plunger I3 is tubular to conduct the liquid from the barrel I I to the string S during its down stroke. A working valve V' is provided on the plunger I3 to control the passage of iluid through the plunger. In the particular instance illustrated the valve V’ is provided at the upper end of the tubular plunger I3, it being under stood that the valve V’ may be otherwise po sitioned on the plunger I3. 'I‘he valve V’ in cludes a ported cage 40 secured to the upper end of the plunger I3.and to the lower end of the rod R to form a connection between the plunger and red. The cage 40 houses a valve or ball 4I which cooperates with a seat in the cage to con trol communication between the interior of the string S and the interior of the barrel II. The vabove described packing assembly 36 seals about the plunger I3 to prevent the leakage of fluid from the string S into the anchor I2. The means I4 provides for the pumping of gas from the well into the string S during each up stroke of the plunger I3. It is a feature of the invention that the means I 4 renders the pump 55 double acting so that it displaces or forces fluid into the string S during each movement of the plunger I4. The means I4 includes a multiplicity of ports 43 in the wall of the section I8. The ports 43 communicate with the interior ci the 60 section I8 between the lower end of the seat Iû and the upper end of the follower 22. In installa tapered downwardly and inwardly. When the tions where the level L of the liquid in the well pump is lowered through the string S to its po is above the ports 43 the invention provides a 65 sition in the well the tapered periphery of the tube 44 for carrying the gas from the well to lock ring 32 cooperates with the inclined wall I6 the ports. The tube 44 may be threaded on the of the seat IIJ and this cooperation causes con exterior of the collar I9 to have its lower end traction of the ring. When the ring 32 moves . closed against the entrance of the liquid in the past the shoulder I1 it snaps outwardly or re well. The tube 44 extends upwardly around the turns to its original dimensions to cooperate with section I8, the seat I0 and the string S to a the shoulder I1. The cooperation of the lock point above the level L of the iluid in the well. ring 32 with the shoulder I1 serves to hold the The gas conducting tube 44 surrounds the parts barrel II and its associated parts against up just mentioned with substantial clearance leav ward movement relative to the string S. When an ing an annular passage for conducting the gas 75 upward strain is applied to the pump to remove downwardly to the ports 43. 'I'he tube 44 may be 2,131,822 3 formed of one or‘more. lengths of tubing. It is to l‘be `understood that where the level L of the is reciprocated in the usual manner to reciprocate the» plunger I3. During the upstroke 'of the liquid in the well'is‘below the ports‘43 the tube . plunger \ I3 a reduced pressure is created in the y lower end of the barrel -II resulting 'in opening " The means I4 further includes inlet valve l means for controlling the admission of gas from of the‘valve 26 `and passage of‘liquid from the well into‘the lower end of the barrel. As 'the plunger `I3 moves upwardly gas which may have been drawn intothe upper end of the barrel dur ‘44`rnay be eliminated. » i the ports 43 andthe interior of the section> I8 vtol the upper end of .the pump barrel l-I. An annular inclined shoulder or seat 45 is provided 10 'on therinterior oil the member 28 and ports 45 extendvthrough the wall of the member 28 to the seat 45;V The ports 4B have their outer ends in communication` with the interior ofthe sec ingrthe previous down'stroke‘of the .plunger is yforced upwardly through the passage P under 10 pressure and'raises theV valve 5I to pass into the lower end of the oil string S. Thus during the up‘stroke ofthe plunger I3 a charge of liquid is tion I8 and, therefore, communicate with theV drawn into the barrel II and a charge of gas is `ports 43. A shiftable gas inlet valve 41 of tubular discharged into the lower end of the string S. form‘is arrangedpwithin the member28. to coop erate with the seat 45. Theupper end «of the valve 41 is tapered to effectively. cooperate -with Ythe seat 45 and fully close the ports 46. The i20 valve 41 surrounds the`plunger I3 .with substan " Atialclearance leaving an annular fluid passage. A spring 48 is arranged under compression' be -tweenuthe upper end >of the connecting member 21 and the lower endof the valve 41 to yieldingly During th'e‘down stroke of the'plunger I3 the .charge of oil in the barrel II below the sealing elements 3S of the plunger I3 is displaced up íwar'dly through the tubular plunger to open the 15_ valve 4I.v and discharge into the oil string S. As 20 ‘the plunger I3 moves downwardly inthe barrel II a reduced or lessened pressure is created vin -the barrel above the elements 38 and the gas in the well is drawn or received inthe barrel above 25 hold the valve in sealing. cooperation with the the'plunger. Thus .during the down strokeV of 25 the plunger I3 a charge oi liquid is discharged I3 extends through the connectingrmembers 21 into the lower end ofthe oil string S and a charge of ygas is received in the barrel II above the seal ing elements 38. Thegas received in the pump may be rock gas or` gas produced from the earth 30 formation or may be gas pumped into the well from the surface of the ground to facilitate the recovery of the oil `or liquid. The pump illus seat 45y where -it closes the ports 46. The plunger and 29, the tubular member 28 and the anchor -collar 30 with substantial clearance leaving an UO annular gas passage l?.V The lower .end of the `passage P is in direct communication with the _ upper end of the barrel` Il `and the valve 41 de scribed above controls the communication be .tween the passage P and the interiorV of the tubular section I8. . trated in 1Figs. l and 2 of the. drawings operates to discharge alternate charges of liquid and gas The means I4 further includes outlet valve l into the oil string S under pressure.. The charges means controlling communication between the of gas forced into the oil string by the pump upper end of the passage P and the lower end greatly assist in elevatingV or lifting the liquid to the surface of the ground in the well known manner. Being double` acting the well pump de~ Iii) `scribed above is particularly efficient. It will be noted that the barrel II, the `plunger I3 and the valves V and V’ may be elements of a typical well end and communicate with the groove 49. A ' pump while the other parts described above may 'shiftable discharge valve 5I is provided t0 con- Y constitute an attachment or appliance for mak trol the ports 50.V The valve 5I may be a tubular ing the pump double acting and gas handling. of the string S. An annular recess or groove 49 is provided in the interior of the anchor collar 30 toconstitute the upper end of the passage P. A plurality of spaced `vertical ports 5i! extend `downwardly through the collar 3l) from its upper member shiftably surrounding the tubular seo tion 33. The lower end of the valve 5I is adapt ed to cooperate with the upper end of the collar 35 to close the ports 5I). Gravity and the hydro static head in the string S serve to hold the valve 5I in its closed position and to return it to its .closed position after operation.` The lower end of the collar 34 limits the upward travel of the 55 valve 5I. Í Ä and application of thev invention embodying a typical anchor I2a and adapted to be anchored in the lower end of'a string of oil tubing T. The pump illustrated in Figs. 3 and 4 of the drawings I includes, generally, a pump barrel ‘IIa carrying the anchor I2a and adapted to be anchoredV in the lower end of the string of `oil tubing T, a plunger I3a operable in the barrel IIa, packing., , When the oil string S is to -be run into the well the seat II), the tubular section I8, the collar I9, the tube 44 and the associated parts are ‘connecte " l60 ' ‘ Figs.v 3 and Llof the drawings illustrate a form „ ed with the lower end of the string.V Following the proper setting or positioning of the string S the well pump may be lowered through the string to its operative position. When the pump ap proaches its operative position the barrel II passes through the packing assembly 2|. When ’means 55 carried by the `barrel Ila to seal with the string T, and means I4n whereby the pump is operable to handle gas admitted to the string T below the packing means 55. The barrel IIa may be of typical construction, 60 .being an elongate tubular member or assembly. The barrel I'Ia extends longitudinally through the string T with substantial clearanceleavíng an the lock ring 32 engages `the inclined seat surface annular iiuid passage 56. A connecting member 51a >is provided on the upper end of the barrel `I6 it is` contracted and upon’passing the shoulder` I1 the lockA ring 32 expands or returns to its Ila to facilitate its connecting with the packing means 55. 4A typical anchor shoe 51 is provided normal size. The anchor surface 3| seats on the on the lower end of the string T.> The shoe 51 wall I6 of the seat Ill to suspend the barrel VI I ' . has a downwardly and inwardly inclined seat 5B from the seat while the ring 32 cooperates with on its interior and has an annular internal ilange 70 70 59 spaced below the seat 58. ' - the shoulder I1 to preventupward movement ofthe innerv barrel and the connected parts. The pump is irl-condition for ,operation vwhen seated orlocated as `just described. q 'I’he anchor .I2El is provided on the lower end ` ofthe barrel‘I I@ to cooperate with the anchor shoe 51. >In practice the anchor I2EL may be kcon During operation the _string of. pllmllrods R l nected Withthe lower end of the barrel .IIa by 75 4 2,131,822 a tubular valve cage 60. The valve cage 60 may be thre'aded on the anchor I2a and may be con nected with the vbarrel I Ia by a suitable connect ing member 6I. 'I'he anchor I2a has a down $1 wardly and inwardly tapered face 62 adapted to seat on and seal with the seat 58. The lower por tion of the anchor I2@ is split into a multiplicity of flexible lingers 63 which carry lugs 64. The lugs 64 are adapted to spring into. cooperation with the under side of the flange 59 when the pump is lowered into place and their cooperation with the flange 59 releasably holds the pump against upward movement. The anchor shoe 51 and the anchor I2a just described may be of typical construction. A standing'valve is pro vided on the lower end of the barrel Ila. The standing valve may comprise a seat 65 in the lower portion Vof the cage 68 and a ball valve 66 for cooperating downwardly with the seat 65.V 20 The connecting member 6I may have an internal perforate web 61 to limit the upward movement of the valve 66. The plunger I (liL is the reciprocating element of the pump. 'I'he plunger I3a extends into the barrel IIa from its upper end and carries series of packing means or elements 68 for slidably seal ing with the interior of the barrel I Ia. The seal ing elements 68 are preferably operable to seal with the interior of the barrel I9a when the plung 30 er I3a operates in both directions. The plunger I3a is tubular to pass or conduct fluid from the barrel IIa upwardly into the string T. ing valve is carried by the plunger traveling valve may be arranged at the 35 of the plunger I3a and may comprise A travel |33. The upper end a cage 69 forming a connection between the upper end of the plunger I3a and the plunger operating rod R. 'I'he cage 69 is perforate and houses a ball valve 1I). The valve 'I8 is adapted to seat down wardly in the cage 69 to close olf communication between the interior of the string T and the in terior of the plunger I3a during the upward move ment of the plunger. The packing means 55 is provided to seal off the upper end of the passage 56 from the interior of the string T above the passage. The packing means 55 includes a tubular section 1I threaded on the upper end of the connecting member 51a to extend upwardly through the string of tubing. The upper portion of the section, 1I is thickened and an annular external flange 12 is provided on the member 1I between its ends. A packing as sembly 13 surrounds the thickened portion of the section -II above the flange 12. The packing assembly 13 may be similar to the above described packing assembly 2| comprising a multiplicity of superimposed rings having tapered abutting ends - whereby the assembly is expansible outwardly as well as inwardly when subjected to compression. 60 The packing assembly 13 is operable to seal with the interior of the string T and with the exterior of the tubular section 1I. ’A follower 14 is pro vided to cooperate with the upper end of the packing assembly 13. The follower 14 is an elon gate tubular member and its lower end bears on the inclined upper end of the upper ring in the packing assembly 13. A tubular member 'I5 of reduced diameter is threaded in the upper end portion of the section -II and a packing gland housing or body 16 is carried on the upper end of the member 15. A packing assembly 11 is ar ranged in the body ‘I6 to- seal about the plunger I3a. The packing assembly 11 may be similar to the assembly 55. A follower 18 is threaded in the upper end of the body16 to actuate or com press the assembly 11. A spring 19 is arranged ìmder compression between a shoulder 8U on the body 16 and a shoulder 8I on the follower 14 t0 urge the follower downwardly against the packing assembly 13. The spring 19 is provided to actuate or assist in actuating the packing assembly 13. The invention provides means for connecting the barrel IIa and the parts connected therewith with the plunger I3EL and rod R to be run through the tubing string T on the rod R with the packing assembly 13 in a normal uncompressed state. TheA tubular follower 14 projects upwardly beyond the upper end of the gland body 16 and has two diametrioally opposite bayonet slots 82. The bayonet slots 82 extend downwardly from the upper end of the tubular follower 14. VA pin 83 projects radially from opposite points on the cage 69 to cooperate-with the bayonet slots 82. When the follower 14 is connected with the rod R by the pin 83 cooperating with the bayonet slots 82 20 the barrel IIa, the tubular section 1I, the mem ber 14, the gland body 16 and the associated parts are supported on the shoulder 8I through the medium of the spring 19. Thus the pressure exerted on the packing assembly 13 by the spring 2.5 'I9 is relieved from the packing assembly when the pump is run into the well. Following the anchoring of the pump in the shoe 51, as de scribed above, the rod R may be given a partial rotation and a slight upward movement to dis 30 engage the pin 83 from the bayonet slots 82 where upon the plunger I3EL may be reciprocated by the rod R. The means I4a is provided to render the pump double acting and capable of handling gas as well ' as liquid. The means I4a includes means for admitting gas from the well or well casing into the passage 56. A multiplicity of spaced ports 84 is provided in the string of tubing T to com municate with the passage 56 below the flange 12. 40 In certain installations the ports 84 may directly communicate with the portion of the well or the well casing carrying the gas. Where the level L of the liquidrin the well is vabove the ports 84, as illustrated in the drawings, a tube 85 may be threaded on a coupling 86a of the string T to extend upwardly around the string to a point above the liquid level L. The tubing 85 is spaced some distance from the string T to leave an annu lar passage placing the ports 84 in communica tion with the portion of the well containing the , gas. The means I4a further includes inlet valve means for governing the admission of gas to the upper end of the barrel IIa. This valve means may include a seat 86 on the interior of the tubu lar section 1I. Ports 81 extend through the wall of the tubular section 'II to have their outer ends in communication with the passage 56 and to have their inner ends at the seat 86. A shiftable 60 tubular valve 88 is arranged in the tubular section 1I and is adapted to seat upwardly against the seat 86 to close the ports 81. A spring 89 is ar ranged under compression between the lower end of the valve 88 and the upper end of the con necting member 5`Ia to urge the valve 88 to its closed position. The plunger I 3a extends through the tubular section 1I with substantial clearance leaving a fluid passage 90 which has communica tion with the interior of the barrel I Ia and which extends upwardly to an annular groove 9| in the upper portion of the section 1I. Valve means is provided to govern communication between the passage 98 and the interior of the string T above vthe packing means 55. This valve means may. 5 ’include a multiplicityof ports 92 extending up-4 wardly through the section 1| `from the groove 9| `to the upper end of the Section. A shif table tubu- ' lar valve 93` surrounds the member 15 and is adapted to cooperate with the upper end of the `section 7| to close the ports 92. Gravity and the `head of fluid in the tubing string T may hold the valve 93 in its closed position. k . Y . The pump illustrated in Figs.V 3 and 4 of the .10. `fdrawings may be anchoredl in its operative posi " tion Qin the well `by lowering it into the well on k l.the string of rods R. When the pump is >lowered , 15 through thewell the pin 83 cooperates with the bayonet slots 8.2‘ whereby the rod R carries the tubular follower‘l4 `and through> the medium of the spring'lS bearing onrthe shoulder 8| carries the other parts "of the pump. When the pump reaches its proper position'in the well the anchor I2a is automatically latched in the‘shoe 5`|,"as Following the‘anchoring of the 20 described above. pump the rod R is turned and moved upwardly to release the pin 83 from thebayonet slots 82. The spring 19 then exerts its pressure upon the `<packing assembly 13 to actuate the same against 25 the controlof the string T and the exterior ofthe section '|'|`. ‘The pump is then in condition for ted. The lower‘end of the‘passage 56, occurring between the `barrel ||a and the interior of the tubing string‘T has communication with the in terior of the ~anchor |2ß below the valve 66. A plurality of lateral ports 56 is provided in the anchor 12a to place the lower portion of the pas sagef56 inlcommunication with'the interior of the anchor.> vThepo-rts 96 communicating with the interior of ¿the anchor |28~ below the valve 66 admit the Well fluid‘into the passage 56. The operation of the pump> illustrated in Figs. 5 and 6 of the drawings is substantially the same as the operation’of’the structure illustrated in Figs. 3fand 4‘, except that the pump handles liq uid duringeach movement of its plunger'lâa. 15 During the down stroke of the plunger I3a liquid is displaced from the lower portion of the barrel Ha through the `plunger to‘dìscharge into the tubing string'I‘.` During the down stroke of the plunger i3a liquid is drawn through the anchor >|2a`,.the ports 96, the passage 56 and the ports 31 into the upper portion of the barrel | la. Dur per portion- of the barrel |'|a causing opening of ing the up stroke ‘of the barrel ||a the liquid in i the barrel above the sealing elements 68 is forced through ‘the ports "92 and the tubular follower ‘M into the‘tubing‘string T and liquid is drawn into the'lowerïportion of the barrel ||a through the anchorî l2a andl past the valve 66. Fig;A 7 of the drawings illustrates a slight modi-fication off the plunger and anchor structure il lustrated in Figs. 52and 6. In this form of the invention a member 98 is interposed between the upper end of the anchor l2a and the lower end of the valve cage 6|). The member 98 `may` be `the valve `88 and the admission. of gas> from the threaded 'on the upper` end‘ of' the anchor l2a operation. k . . l ‘ ` `Duringftheïdown stroke of the plunger |3a fluid lwithin 'the> barrel ||a below the packing .30 elements-68 is displaced upwardly through the plunger ‘|311` to discharge past the ‘valve 'l0 into the string T. As tlfieïplun'ger"ItEL moves down wardly a reduced pressure is-created inlth'e up 20 `well above the level L. Thus the down `stroke and may be threaded into the lower end of the of the plunger 13a `results in the discharge of a charge of liquid' into the string Tand the re ception of a charge of gas in the barrel Ila above 40 the sealing elements .68 of the plunger. As 'the cage 60. A central longitudinal ’opening 99`ex tendsfthrough the member' 98 toplace the inte rior _of the anchor |’2ab in 'communication'with the valve seat. |00 of _the standing valve 66. VA pluralityl'of Vlateral Yports ||l|is provided in the ing` elements 68 is‘forced upwardly through the ` wall of the member 98 an‘d- places the opening passage 90 and ports 92 to lift the valve 93` and 99 in“ communication with the‘passage 56. The flow finto" the string TI‘. Upward movement of ports |-|l| Aare adapted to " admit ,fluidi fromfthe plunger moves‘upwardly the gas ‘aboveits seal' well into ‘the’ 'passage 56 yduringrthe down stroke 45 the‘lowerporti’on of the barrel ||2ab so that the of the plunger l`3a. The member 98 may be read» valve ‘66. is unseated and liquid is ldrawn into .the ` ilyl‘interposed betweenïthecageßll and"v anchor I2a of a typical well pump so that the pump -may lower portion of the barrel. From the above it will be apparent that the pump illustrated in embody‘a ¿typical standing valve and a typical l' " Figs. 3 and 4 ofthe drawings is a double acting anchor. 59 ' the plunger |3a ‘creates a reduced " pressure in pump operable to displace a charge of liquid Having described only typical preferred forms into the string T during each down stroke of its plunger lila and operable 'to displace Ya charge of gas into the string TY during'each up stroke and applications of my invention,- I do not wish to be limited or restricted to the specific details of its plunger; The charges ofA gas thus admitted tothe tubing string T materially assist in raising any variations or modifications that may appear 55 to those skilled inthe art or fall >within the scope herein ’set forth, but wish to reserve to myself or lifting the pumped liquid to the surface'. ï' The of the following claims. „ ' y barreli ||ß with its anchor l2ar and the plunger ' Having described my invention, I claim: |35”` with` its valve 'Hlmay be typical well pump 1.` Well pump-ing apparatus including, a tub parts andthe packing means 55 andthe meansv ing for conducting the iluid to the surface, a 60 I4 vmay comprise an attachment to adapt the barrel in the tubing having an inlet valve vat its pump for the duty described above.' ‘ . ‘ Y lower end, aV tubular plunger reciprocable >in the yFigs.'5 and Grof the drawings illush‘ate a form barrel and having a’ _discharge communicating ofthe invention adapted to handle liquidv orv oil with the tubing, a traveling valve on the plunger, A ‘ . during each stroke of its plunger." In thezpump illustrated in Figs. 5 and 6 'the barrel, Ile, the plunger |321, the packing means 55 and the valves 88 and 93 -may be identical with the correspond-V ing elements of the- form' ofthe invention illus 70 trated in Figs. 3 and'4`and corresponding refer ‘ ence numerals will be‘ employed for such parts. The pump illustrated in Figs. 5 and 6 differs from the `‘structure illustrated in Figs. V3 and 4 in that means sealing off between the barrel _and tubing below theA discharge of the plunger, there being i communicating ports inthe barrel `and tubing below said means, an inlet Valve controlling the port in thebarrel, and outlet valve‘means con trolling communication between-the upper end of the barrel and the tubing above the sealing means. ` ‘ 2‘.. In a double actingwell pump for use in the the tubing string T is imperforate‘throughout 'well, a tubing for conducting the fluid to the `itsliî-:ngtlr and the. collar 86 and tube4 8.5 are omit.. surface, a barrel extending into the tubing and asY 6 2,131,822 having an inlet valve for` its lower end, atubular kberrand the interior of >the tubing, there being plunger operable in the barreland having a dis ports in the member and the tubing below the charge communicating with the tubing, a working sealing means, and an inlet valve governing the valve controlling the discharge from the plunger admission of fluid from the well through the port DI into the tubing, the plunger discharging into the in the member to the barrel. tubing during its down stroke, means connecting the barrel with the tubing‘and sealing between the barrel and tubing below the discharge of the plunger, there being a port in the wall of the upper portion of the barrel,v a tube on said means placing said port in communication with the well above its liquid level, a Valve controlling said port and open during the down stroke of the plunger, and a valve governing communication 15 between the upper end of the barrel and the tub ing open during the up stroke of the plunger. 3. An attachment for a well pump for use on a tubing and having a barrel with a standing valve and a reciprocable tubular plunger having a 20 working valve and operable in th'e barrel, said attachment comprising a tubular part secured to the upper end of thel barrel and having a port in its wall, a tubular part secur'ed to the tubing and surrounding the ñrst tubular part to provide Vva 25 space thereabout communicating with‘the port, there being a port in the second tubular part communicating with said space >to admit 'fluid from the well to said space, `a valve controlling the first mentioned port, and valve means govern 30 ing communication between the upper portion of the barrel and the interior ofÍthe tubing. 4. In combination with a well pump including a tubing, a barrel with an ‘inlet valve at its‘lower end and a tubular plunger operable inthe barrel 35 and having a discharge valve, an attachment for the pump comprising, a' tubular' member con nected with the upper end ofthe pump barrel, a tubular'extension on> the lower end of the’tubing, packing means sealing between the-member and 40 the interior of the tubing extension, there being ports in the member and tubing extension for placing the interior of the member and the upper end of the barrel in ‘communication with 'the well, an inlet valve governing the admission of 45 ñuid to the barrel ‘through said ports, andan outlet valve governing communication 'between the interior of the member and the“ tubing above the packing. ‘ ' ‘ " 7. An attachment for a well pump for use on a tubing, said pump having a barrel with an'inlet valve at its lower endV and a tubular plunger op erable in the barrel and having a discharge valve, the attachment comprising, a tubular member connected with the upper end of the barrel .and forming a ñuid passage between the upper end of the barrel and the tubing, an outlet valve govern ing the passage of fluid through the member, means sealing between the exterior of the mem ber and the interior of the tubing, there'being ports in the member and the tubing below the sealing means, means placing the port in the tub ing in communication with the well above the liq uid level therein, and an inlet valve governing ,the admission of fluid from the well through the port in the member to the barrel. 8. An attachment for a well pump for use on a tubing, said pump having a barrel with an inlet valve at its lower end and a tubular plunger op erable in the barrel and having> a discharge Valve, the attachment comprising, a tubular member connected with the upper end of the barrel and forming a fluid passage between the upper end of the barrel and the tubing, means on the mem 30 ber sealing about the plunger, an outlet valve governing the passage of fluid through the mem ber, means sealing between the exterior of the member and the interior of the tubing, there being ports in the member and the tubing below the sealing means, and an outlet valve governing the admission of fluid from the well through the portfin the member to the barrel. - 9. A well pump for use on a string of tubing including, a seat connected in the tubing, there - being a port in the wallY of the tubing below the seat, a barrel extending from the lower end of the tubing, an anchor cooperating with the'seat, a tubular member interposed between the 'barrel and the anchor whereby the anchor suspends the barrel, ‘a plunger operable in the barrel, said member having a port in its wall, an inlet valve in the member controlling its port, and an outlet valve controlling the passage of fluid through the 5. An attachment for a well pump for-use on 50 a tubing, said pump having a barrel with an inlet _ member from the' barrel into the tubing. 50 valve at its lower "end and a tubular plunger oper 10. A well pump for use on a string of tubing able in the barrel and having a discharge valve, the attachment comprising, a tubular member connected with the upper end of the barrel, pack-~ 55 ing means sealing between the member and the interior of the tubing, means for actuating the packing following the anchoring of the pump, there being ports in the member and tubing for placing the interior of the member and the upper 60 end of the barrel in communicationl with the well, an inlet valve governing the admission'of fluid to the barrel through said ports„and an outlet valve governing communication between the interior of the member and the tubing above the packing 65 means. K , - 6. vAn attachment for a well pump for use on a tubing, said pump having a barrel with an inlet valve at its lower end and a tubular plunger op erable in the barrel and having a discharge valve, 70 the attachment comprising,` a tubular member connected with the upper end ofthe barrel and forming a fluid passage between the upper end of the barrel and the'tubing,- an outlet valve gov erning the Vpassage of ñuid through the member, 75 means sealing’between the exterior of the mem including, a seat connected in the tubing, there being a port in the wall of the tubing below the seat, means for maintaining said port in com municationA with the well above a liquid level in 55 the well above said port, a barrel extending from the lower end of the tubing, an anchor cooper ating with the seat, a tubular member interposed between the barrel 'and the anchor whereby the anchor suspends the barrel, a plunger operable 80 inthe barrel, said member having a port in its wall, an inlet valve in the member >controlling its port, and an outlet valve controlling the pas sage of fluid through the member from the barrel into the tubing. 65 11. A double acting well pump for use on a string of tubing including, a seat connected in the tubing, there being a portl inv the wall of the tubing below the seat, a barrel extending from the lower end of the tubing, an anchor coop 70 erating with the seat, a tubular member inter posed between the barrel and the anchor whereby the anchor suspends the barrel, means packing -between said member and the tubing, means maintaining said port in communication with the 75 7 2,131,822 well above a liquid level therein higher than said port tosupply gas to said port, a plunger oper~ able in the barrel, said member having a port in its Wall, an inlet valve in the member controlling its port, and an outlet valve controlling the pas sage of fluid through the member from the barrel into the tubing. 12. A well pump for use with a tubing having 4a shoe and a port above the shoe, said pump 'in 10 cludíng, a barrel in the tubing, an anchor on the barrel cooperatingA with the shoe to support the barrel on the tubing in spaced relation to its wall, a plunger operable in the barrel, a tubular mem ber on the upper end of the barrel having a port in communication with the first mentioned port, means sealing Said ports, an inlet valve governing the passage of fluid through said ports to the barrel, and an outlet port controlling the flow of fluid through said member from the barrel. 13. Well pumping equipment comprising a tub 20 ing for conducting the pumped fluid Vto the sur face, a shoe on the tubing, the tubing having a port above the shoe, a barrel in the tubing,r an 14. Well pumping equipment comprising a tub-v ing having a shoe, a barrel extending through the tubing with clearance, an anchor assembly on the barrel cooperating with the shoe to support the barrel, said assembly being ported to main Ul tain the space between the barrel and tubing in communication with the well, a tubular plunger operable in the barrel, means sealing off the up per end of said space from the tubing above the barrel, means for compressing the sealing means, means maintaining the last mentioned means in operative during movement of the pump through the well, the upper portion of the barrel being ported to communicate with the said space, valve means governing the admission of ñuid to the upper portion of the barrel from said space, and valve means governing the passage of fluid from the upper end of the barrel to the tubing. 15. A double acting well pump comprising a tubing for conducting the pumped fluid, a barrel 20 having an inlet valve for its lower end, means at the upper end of the barrel for locking the barrel to the tubing and releasable to allow upward anchor on the barrel cooperating with the shoe ` Withdrawal of the barrel from the‘well, a tubular to support the barrel on the tubing in spaced relation to its wall, a plunger operable in the barrel, a tubular member on the upper end of the barrel having a port in communication with the first mentioned port, means sealing between 30 the tubing and the member above said ports, means maintaining said ports in communication with the well above a liquid level higher than the port in the tubing to deliver gas to said ports, an inlet valve governing the passage of fluid through said ports to the barrel, and an outlet port controlling the flow of fluid through said member from the barrel. plunger operable in the barrel and having a dis charge communicating with the tubing, a work ing valve controlling the discharge from the plunger into the tubing, said means having ports for admitting fluid from the well to the upper portion of the barrel, inlet valve means control 30 ling said ports, and discharge valve means gov erning communication between the tubing and the upper end of the barrel. HERBERT A. SCHMIDT.