Патент USA US2406192код для вставки
- Aug. 20, 1946. w c. o. CANTRELL, JR 7 ’ ‘2,405,192 v SAMPLING APFARATUS Filed Jan. 26, 1943 47v I‘ u 48. )‘ l 34 Y v ‘ FLOW L..I_NE MANIFOLD ' ‘FIG. 45‘ I . VAPOR ' I . 49 I I I 44 4-6, . 2 INVENTOR. 'c.o. CANTRELL. JR. " "r 1%7mm?“ ATTORNEYS. Patented Aug. 20, 1946 _ 2,406,192 a UNITED 'STATES' PATENT OFFICE SAMPLING APPARATUS‘ ' Cyrus D. Cantrell, Jr., Bartlesville, 0kla., assignor‘ to Phillips Petroleum Company, a corporation of Delaware Application January 26, 1943, Serial No. 473,653 4 Claims. (Cl. 137F166) 1 2 particularly to obtaining representative samples of ?uids being conveyed through conduits, and ' . operation and where ‘all wells producing into a This invention relates to sampling and more i central storage battery system must be pro duced continuously and Without ‘interruption. The weight and space occupied by this complete sampling apparatus are such that the Whole is easily portable on a light truck or trailer and is a continuation-in-part of my prior ?led appli cation which ‘mat‘ured as U. S. Patent No. 2,309,625, ,on Feb. 2, 1943. It is often very desirable to know the amount of ?uid being produced by a hydrocarbon oil well thus can be used' to serve several tank batteries for routine tests, or for special well-testing prob; lems, and thereby eliminate the-permanent ‘test and the'quantity of each component part of that ?uid. This knowledge is useful in determining l0 equipment otherwise necessary.‘ In the case of centralized tank batteries serving a large num e?icient production rates for a hydrocarbon oil well and is necessary for determining the amount ber of widely scattered wells,‘ this device would of hydrocarbon'oil and gas reserves within a eliminate long individual ?ow lines to that bat tery, or standard test equipment at the 'junction reservoir. ‘ Standard practice is to produce a hydrocarbon 15 of each small group of ?owlines. ' ‘ . The primary’ object‘ of this invention is to 'pro oil well into a separation system consisting of ‘an oil and gas separator and appropriate re vide an improved ?uid sampling apparatus. ' ' Another object is to provide an improved ap paratus for taking a representative sample of and water are separated one from the other and the oil stored. If two or more wells produce 20 ?uid from a conduit. . ‘ ' into a single separation system or tank battery A still further object is the provision ofv an improved apparatus for taking a representative , it is necessary to shut in all the other wells when sample of ?uid produced from a hydrocarbon it is desired to test one well. Shutting in the oil well, said sample being taken at some desir other wells may be undesirable because of dif ?culty in reviving flow, settling of sand in pump 25 able point in a’ lease ?uid conduit system for the purpose of testing component parts of the ing equipment, and other common troubles, as ceivers, stock tanks, and the like, where oil, gas, Well as loss of production during the shut-in period. When testing of individual wells is of primary importance, a special testing system is provided. In the case of high ‘pressure ?owing wells, the complete test system requires a sub stantial investment in equipment even though necessary auxiliary vessels to, the oil and gas separator are often omitted at the price of ?ex ibility, accuracy, and safety. In either case it ?uid. These and 'additional objects and ‘ advantages ' ‘ will be readily apparent to persons skilled in the art by reference to the following description and annexed drawing which pertains to' a preferred embodiment of my invention, and wherein Figure‘ 1 represents a positive displacement 30 type of device, partly in central longitudinal cross section, for obtaining representative fluid is often necessary to limit the length of the test to shorter periods than are necessary for most accurate results. Figure 2 denotes a typical conduit and separa tion system for a group of hydrocarbon oil wells The practice of my invention simpli?es the procedure of testing individual wells by installing incorporated therein. samples; and, y j ' and having the sampling apparatus of Figure l a sampling device in the lease ?uid conduit sys tem between the well and the tank battery sys ‘ V For the purpose of illustration, the application tem. By cutting-out a representative sample ‘of a predetermined fraction of the total ?uid pass of this invention is shown with respect to obtain ing samples of ?uid as produced from a 'hydro-. carbon oil well and as conveyed through the cus ing through the conduit, accurately testing that fraction and returning the‘ same to the origi ' tomary lease conduit system. It is to be under stood that this is only one of the many usesito which. thisdevice may be satisfactorily andveco nal volume, a well may be tested for any desir able length of time without interrupting the oper ations of the other wells producing into a cen tral tank battery system. ‘ y nomically applied ‘in actual practice. ' i '7 The present invention also eliminates the em ployment of duplicate systems of separators, re-> ceiving tanks, and/or storage tanks which are essential with the present methods of well test ing where individual well tests are av necessary" . - , Referring to Figure 1, I have illustrated there 60 in a closed cylinder or chamber I that commu nicates with an inlet conduit 2 through‘ a valve chest 3 and ports 4 and 5, alternately opened, and closed by a slide valve 6 ?xed to a valve rodv 1 which is coupled to a crosshead8. Cylinder] also " communicates with outlet ‘or. exhaust ' cone. 2,406,192 7 3 r duits 9 and Ill through a valve chest II and exhaust ports I2 and I3 which are alternately opened and closed by a slide valve I4 ?xed to a slide rod I5 and crosshead 8. Cylinder I 0on1 tains a piston I6 secured to a piston rod H which is slidable through one end of the cylinder. At tached to crosshead 8 is ,a valve-operating mech anism includingza member. I8, thatjisr?xedly secured to'the crossh'ead and movable therewith, 4 r the arrows; that both ends of the cylinder ar ?lled with well ?uid; and, that the positions of the slide valves 6 and I4 are shown, with port 4 closed, port 5 open, port I3 closed, and port I2 open. The fluid entering conduit 2 is under sub stantially the same pressure as that existing in the test ?owline 35 and causing the ?ow of ?uid through it, and this pressure is: exerted against the right-hand side of" piston I6; The pressure and a plate I9 having a recess or notch 29. Plate 10 on the left-hand side of piston I6 is allowed to I9 is slidable with respect to member I8‘ and} l '7 be less than that on the opposite side by adjust ment of regulating valves 60 and ‘62, so that pis crosshead 8. Member l8 carries a pair of latches ton Itv moves toward the left. As the right-hand ~2I and 24 which are pivoted at 23 and'25, re end of: thecyli'nder-?lls with ?uid through con spectively. Each of said latches is prdvidedlwith, a downwardly extending portion, that is adapted ' duit‘ 2 theleft-hand end discharges ?uid through conduit 19. As- piston I6 moves toward the left, to engage notch 20 depending upon the relative arm. 29 engagesand. compresses spring 21. Com position of member I8 and‘ plate. I9; and an up pression of springv 21 continues until arm 29’en wardly extending portion. A compression spring gages" and depresses the upwardly extending por-, 22 tends to rotate latch 2| in a clockwise direc-v tion of latch 2|, thus compressing spring 22 and tion about its pivot point 23, vwhile a similar releasing; the downwardly extending‘ portion of spring ZE'tends to rotate; latch 24 in- a. counter latch 2.! from notch 20-. At this. pointxm'em‘ber CIOCKWZIISGKdiI‘GCtiOHT about itsv pivot point 25,. ,As I8< slides to the left on plate I9’ moving crosshead willTbe-no‘te‘d froman examination of Figure: 1, 8, valve rods ‘I and, I5, andslidevalves ‘6 and I4 member. I8 is so positioned with respect to plate to the left the distance‘ d in Figure 1. When I59 that" the downwardly extending portion of slide valves 6 and I4 have reachedv a position such latch’: 21 has‘ been received in notch. 29', whereas that ports 4- and I3 are open; the downwardly the corresponding. portion“ of. latch 24 rests on extending portion of latch 2-4. is forced to? drop the-upper surface of plate: I9’. A pair of ‘prefer into notch 20> by spring 26 and locks slidevalves ablly coaxiallyrdisposedr compressionsprings ‘21 6 and I4, connecting: valve rods ‘I and I5, and and :28 are attached to‘ member 58 and are 'crosshead 8 and memberIB in thenew position. . adapted-to be “alternately ‘compressed by an arm Fluid entering conduit '2. now exerts pressure 29lithat'is secured tolvalve rod I'I. against piston It on the left end. thereof cause fTur-nin‘gnext' to-the system illustrated inFig ing piston I6 to move to the right the distance ure 2',‘I'have denoted therein a plurality of well 8 and discharge the ?uid in the, right end of cyl ?owlines 39, 3I, 32, and33, each of which come inder I_ through port I3 into conduit I0. Piston municates with-a separate producing oil well. A litrmoves to the right until arm 29 engages and main ?owline'34 ‘connects with well flowlines 35, compresses spring 28 and ?nally depresses and 3I', 32,:and133 through. valved ‘branch lines 35, 37, releases latch 24 from notch 25], allowing mem 38, and Y39, respectively. A test ?owline 35 also connects with well ?owlines‘ 39, 3!, 32, and 33 40 her‘ I8 to slide to the right on plate, I9 and to move slidevalves 6 and I4 to the right through through ‘valved branch lines 49-, M; 42, and 43, respectively. Main ?owline 34 discharges-into a ' valve rods ‘I and, I5 and crosshead 8 through dis. tance d. When valves ,6 and I4 have again tank battery hookup that'may be of any known reached the position shown in Figure 1, with'ports design such as the illustrated arrangement of 5 and I2 open and ports 4, and I3 closed, latch equipment which. consists in its essential ele 2! drops againlinto recess 29 andlocks the valve ments of. a: gas-liquid'separator 44 that commu mechanism in this position; Fluid now reenters nicateswith a boot 45 which in turn communi the‘right'end of cylinder I through port 15/ and cates with. a plurality of stock tanks 46 that are conduit 2, comprising onev cycle ofv operation of connectedinxseries; 7 .Gas: that‘is'separated from the-"well; ?uid in"; separator 441s taken off over- ‘ one cylinderunit of the device. head; through a line 41 as allowed-bye pressure Referring to Figure 2, let us assume it is de-' sired to sample and meter the componentparts of oil, water, and gas ?owing from the Well C011? nected to well ?owline 3.3 and to make certain tests upon the oil and gas at predetermined con ditions-of separation. Flowline 30 is cut out of regulator device~48.' ‘Vapors evolved‘ in boot 45 and stock‘ tanks. 43 are transmitted therefrom ' through‘avapor-line49. ' ' Te‘st?owline.v 35dischargesv into a battery con taining cylinders 5 I, v52, 53, and 54, each of which . V isipreferably identical in design'with the‘mech anism> described-in Figure-71; As shown in the Figure‘v 2‘, one of the two discharge conduits of» ' I ?owl-ine 34.- by closing branch line 35 and open- ' ing branch line 49, leaving branch lines 31,33, and 39 open, and closing branch lines 4!, 42, and ‘ each cylinder, namely, conduit I0, is connected GO 43. The'?uid in line 39 now all ?ows through ?ow test line 35. Fluid from ?ow 1ine 35 enters toaareturn conduit 59. whilethe other discharge conduitv namely,~conduit 9, is connected to the next ‘cylinder except’ in’ the case of cylinder 7 54 wheres'aid ' other-‘discharge. conduit 9 is connected toza small’test separator'56; Separator 55 is con nectedrtolareceivin'g tank S-l-by a conduit Y53; and to~a1gas-meter<33'by a- conduit 64; Return con duit 59 is connected-to"main?owline 34. 59, 55, and: 62' are appropriate check and regulating valves;~ Referringirto 'Figure 1, in’ operation’ ?uid from‘za- hydrocarbon oil‘ well enters" cylindrical chamber‘ I " through conduit 2-‘. Let us assume» cylinder 5| through conduit 2. Cylinder 5| di vides the ?uid- admitted thereinto into’ two equal parts; the right end’ discharges fluid» into con duit I9 and-the left end into conduit 9. Conduit IIl'discharges ?uid intov return line- 59, which con ducts the ?uid back into main ?owline 34. Con duit 9'conducts- the fluid from the left‘end of the cylinder to the inlet‘ conduit of cylinder 52;. Cylinder 52 divides the ?uid passing through con-v duit. 9 into two equal parts. also, discharging one-halfinto- return "linerv 59; and the other half into cylinder~53-. Any- number of cylinders‘con... that‘pis'ton I6? is .in- thelposition shown in Figure nectedjinseries may be employed dependingrlupon 1 and ii is! moving in the’ direction - indicated ; by? " thendcsiredquantityw ofthejfinall; sample; Which‘: 2,406,192 5 6 decreases in a geometric progression. For exam ceeding cylinder of the series being connected to the ?uid sampler line of each preceding cylinder of the series, the ?uid discharge line of each cylinder communicating with the ?ow conduit ple, two cylinders would permit taking a sam ple which is an exact ‘A of the initial quantity in weight and composition. Three cylinders would provide a sample of 1/8; four cylinder, Tie; ?ve Cl down stream of the intake means of the ?rst cylinders, £5; and so on. If the sampling period cylinder of the series, and a sample receiving is sufficiently long, the law of averages will op receptacle connected to the ?uid sampler line of erate to allow the composition of the sample to the last cylinder of the series. be quantitatively the same as that of the total 2. A system of the character described com ' ?uid flow during the test period, and the weight 10 prising a plurality of well ?ow lines adapted to to be the predetermined exact fraction. transmit ?uid produced by corresponding oil In employing the system shown in Figure 2, the wells, a main ?ow line, a test ?ow line, valved ?nal sample enters the small separator 56 where means for placing the well flow lines into and the gas is separated from the oil and Water, The out of communication with the main ?ow line and gas passes through conduit 64 to gas meter 63 15 the test ?ow line as desired, a plurality of means where its volume is measured. The oil and water arranged in series for successively dividing ?uid pass from separator 56 through conduit 58‘to re transmitted into each of them into substantially ceiving tank 51, where they are separated by equal parts, each of said plurality of means in gravity and their volumes are measured. By cluding a cylinder, a piston reciprocable Within multiplying the weight of the components of the the cylinder, intake means including a valve op sample by the reciprocal of the fraction by which erated by said piston at each end of its stroke it was reduced, the weight of each component for alternately conveying ?uid into each end of which ?owed from the well during the test period the cylinder, a ?uid sampler line and a ?uid dis is determined with a high degree of accuracy. charge line connected to the cylinder, and means It is to be understood that the above form of 25 including a valve for alternately discharging ?uid my invention herewith shown and described is to conveyed into the cylinder through the ?uid sam be taken as a preferred example of the same and pler line and the ?uid discharge line during each that various changes in size, shape, and arrange complete stroke of the piston, the intake means ment or application may be resorted to without of the ?rst cylinder of the series being connected departing from the spirit of the invention, and to the test ?ow line, the intake means of each further, that the theories of operation, as set out succeeding cylinder of the series being connected to the ?uid sampler line of each preceding cylin in this invention, although believed to be sound and workable, are not to be construed as the sole der of the series, the ?uid discharge line of each cylinder communicating with the main ?ow line basis for operating this device. This device op erates successfully whether or not upon the prin- .\ down stream of the connection of the test ?ow ciples described herein, and is to be limited only line with the main ?ow line, and a sample re by the appended claims. Further it is to be un ceiving receptacle connected to the ?uid sampler derstood that the phrase “a sample receptacle” line of the last cylinder of the series. 3. In an apparatus for obtaining representa when used in the claims refers not only to a sepa rator such as 56 but also to the succeeding cylin 4-0 tive samples of a ?owing stream of ?uid, a main ders such as 52, 53 and 54. I claim: ?ow line for said stream, a cylinder, a piston re ' , l. A system of the character described com prising a ?uid ?ow conduit; a plurality of means arranged in series for successively dividing fluid admitted into each of them into substantially equal parts, each of said means including a cylin der, a piston reciprocable within the cylinder, intake means including a valve operated by said piston at the end of each stroke thereof for al ternately conveying ?uid into each end of the cylinder, a ?uid sampler line and a ?uid discharge line connected to the cylinder, and means in cluding a valve for alternately discharging ?uid admitted into the cylinder through the ?uid sam_ pler line and the ?uid discharge line during each complete stroke of the piston, the intake means of the ?rst cylinder of the series being connected to the ?ow conduit, the intake means of each suc ciprocable within the cylinder, means including a valve for alternatively conveying ?uid from the main ?ow line at a given point into each end of the cylinder, a ?uid sampler line vconnected to one end of said cylinder, a sample receptacle con nected to said ?uid sampler line, a discharge line connecting the other end of said cylinder to said main ?ow line down stream of said given point, and means including a valve for alternately es tablishing communication between the cylinder and said sampler and discharge lines, whereby a given quantity of ?uid from the main line is delivered in de?nite proportions to said sample receptacle and back into said main ?ow line. 4. In the combination of claim 3, each of said means including a valve including means actu ated by said piston for operating said valves. CYRUS D. C'ANTRELL, JR.