Патент USA US2128073код для вставки
Aug. 23, 1938. 2,128,073 T. E. BRYAN FLUID PRODUCING APPARATUS Filed Dec. 23, 1935 Í /0 / /7 Z0 Z5 /8 2/ /7 Z5 /9 l ¿4 22 9 Thomas E Bryan, v t Üìwcwtov. v2,128,073 -Patented Aug. l2_3, . 4UNITED STATESv PpsrEN'rA OFFICE 2,128,073f FLUID PRODUCING APPARATUS Thomas E. Bryan, oklahoma city, okla. ` Applicationl December 23, 1935, Serial No. 55,865 9 oisans. (Cl. 103-232l invention. Such limitation is to be only by the This invention relates in general to an appara tus for flowing iluid from a well, or the like, where the natural pressure within the well at the bottom prior art and by the terms of the appended claims. thereof is insufficient to cause the iiuidto rise to . 6 the top of the well. More particularly, it relates _ _ ‘ l Referring now to the drawing, in which like numerals indicate corresponding parts through- 5 to a device for employing gas, or the like, under Figure l is a vertical cross-section, illustrat pressure for the purpose of ejecting the fluid from the well, and to a. means for admitting such gas - ing a device constructed in accordance with this to the well at the proper time and place to cause invention disposed at the bottom of an oil or similar well. 10 'l0 such ñuid to flow from the well. Figure 2 is an enlarged vertical cross-section In the past, various devices have been produced illustrating the details of the gas admission valve for the purpose of ilowing> the fluid from a well where the natural pressure within the welll was insufficient to cause the ñuid to flow, but these l5 have, for the- most part, depended upon aerating shown in Figure 1. ' As illustrated in Figure 1, a casing I is placed within the well in somewhat the customary man- ‘l5 ner and lowered to substantially the` upper bound ary of the producing formation 2. A tubing 3 is the column of fluid by introducing into the column relatively small quantities of gas, thus lightening the column of ñuid and making it possible for ' the natural pressure within the well to raise the . 20 column of iiuid to the top of the well and thus cause the well to flow. At best, such an arrange ment is useful only so long as the natural pressure Within the well is high enough to raise a column then lowered into the casing until its lower end . 4 extends below the lower end of _the casing to a - point substantially at the bottom of the well hole. 20 The lower end of this tubing is threaded ex ternally for the purpose of receiving a nut 5, this nut being threaded both internally and external ly. Surrounding the lower end portion of the » of. ñuid after the same has been aerated to ' tubing 3 is an intermediate cylindrical member 6, 25 25 the greatest possible extent. It is an object to provide a device _.of this curved at the upper end and joined to the wall of the tubing 'I by any suitable means. This jointv general type in which, so long as any pressure ex ists within the producing formation at the bot tom of the well suiiicient to cause a ñuid to rise need’ not necessarily be a lead-proof ljoint.' Ad jacent to its upper end, this member 6 is provided 30 within the well at all, such iiuid will be periodi-> with openings 8, for a purpose, which will be 30 presently set forth. Its lower end isthreaded cally and automatically -ejected from the well. A further object is to provide' a device which „ `to receive the collar 9,'the lower end of this collar 'does not depend upon the natural pressure at the being threaded upon the exterior of the nut 5A. Adjacent to its upper end, but below the per bottom of the well to force the ñuid out _of the 35 well. ' ' Still another object is to provide a device of the character set forth in which the pressure of the gas being introduced for the purpose of flowing the well, will not affect the amount' of ñuid pro 40 duced by the well. > ` ' - ` 'Another object is to provide a device in which a gas introduced for the purpose of ilowing the A forations 8, the cylindrical member -.6 is provided with a packing. I 0 whichserves to close oil' the annular space between the cylindrical member 6 and the internal wall of the casing I.Just below the packing III the tubing 3 and the - member 6 are provided with substantially regis tering'openings and a >nipple Il is inserted in these openings to connect the same and provide“ a. passage between the exterior of the member 6 well will be governed solely by the relation be tween the pressure due to the hydrostatic head of _and the interior of the tubing. Inserted in this 45 45 thecolumn of fluid within the tubing in the well, ' nipple is a valve seat member I2 which has an vand the natural pressure existing at the bottom opening I3 therethrough adapted to be closed by of the well substantially at the lower end of such 1 a check valve I4. This check' valve Il is hinged at I5 and is provided with a s_top pin I6 to pre tubing. . With the foregoing and )other objects in view, vent it from opening too far. u 50 this invention consists of various parts and com Adiacent to its lower end, but above the nut binations illustrated in the accompanying drawing 5, the tubing is provided with an opening for the and set forth in the following description, it being purpose of receiving a nipple I 1 adapted to con understood, however, that such drawing and de nect the exterior of the tubing with a cylindrical ' ‘scription are only by way of illustration and are valve housing I8. An extra support I9 may also ,r 55 not to be taken as a limitation on the scope of the 2 alaaovs be provided to assist in properly supporting the valve housing, if so desired. 'I‘he valve4 housing i8 is provided with a pair of spaced valve seats 2l] and 2i fitted within the valve housing at positions above and below the bottom of the well will cause the check valve I4 to reopen and the process will be repeated. It is noteworthy that by the arrangement above set forth, no fluid will be forced from the Well until the column of liquid has risen in the tubing connection with the nipple Vf. Each of these members 20 and 2| provides a downwardly facing the bottom of the tubing substantially equal to At its lower end, the housing >is in ternally threaded to receive a bushing 22, this bushing serving the double purpose of limiting the downward travel of the valve stem 23 and also connecting the housing I8 with the support i9. , valve seat. Mounted upon the valve stem 23 in a position to close simultaneouslyI against the respective 15 valve seats 2l] and 2l are a pair of valve elements 25 and 2li, thus forming a balanced valve con trolling communication between the chamber in to a height such that it will exert a pressure at the natural formation pressure at that point. On the other hand, the operation of the device is so certain that when the column of fluid within 10 the tubing reaches such height, the pressure with in and without the bottom of the tubing, will be equalized and the gas automatically admitted to ilow the tubing, without any attention on the part of the operator. 15 It will thus be seen that the device is entirely independent in its operation of any human factor and that it serves to raise the fluid out of the well termediate of the tubing 3 and the cylindrical member 6 and the interior of the tubing. - independent of the amount of natural pressure U20 AAt its lower end, the valve stem 23 is threaded which may exist within the producing formation to receive a plunger 26 which is locked in place at the bottom of the well. on the valve stem by a lock nut 21. The plunger It will be readily apparent that a means has 26 is adapted to reciprocate within the opening been provided for carrying out the objects and 28 formed within a plug member 29, fitted into advantages sought by this invention in a manner as the lower end of the tubing 3 with a tight ût. both efficient and practical. In operation, the formation 2, whatever may be Having thus described my invention, what is its natural pressure, will produce a certain quan claimed and desired by Letters Patent, is: tity of fluid and this fluid will rise within the l. In a well flowing apparatus, a tubing adapted chamber between the casing and the member 6 to extend into the well, means to admit well- fluid 30 belowv the packing i0 into the nipple il past the into the said tubing, and means operatively in check valve I4 and into the tubing 3. As the dependent of said first means to admit a gaseous formation continues to produce the fluid, the substance into said tubing, adjacent to the lower column of liquid will begin to build up within the end thereof when the pressure of the fluid at tubing 3 and will continue to build up until the the bottom of said tubing bears a predetermined 35 hydrostatic head of the column of fluid becomes relation to the natural formation pressure, where 20 25 30 35 substantially equal to the pressure existing out by the fluid in saidV tubing will be forced out of side of the lower end of the tubing. When this condition prevails, the plunger 26 will move down wardly because of the lack of any unbalanced force tending to hold it up and the valve elements 25 and 2li will be moved away from their respec tive seats. The annular space between the tubing and the casing above the packing l0 is filled with gas or a gaseous substance under pressure and the well by said gaseous substance. 2. In a well flowing apparatus, a tubing adapt ed to extend into the well, a check valve for ad mitting well fluid into said tubing, and means 40 operatively independent of said check valve to admit a gaseous substance into said tubing adja cent to the lower end thereof when the pressure of the fluid at the bottom of said tubing substan this gas now enters through the opening 8 at the upper end of the cylindrical member 6 and passes tially equals the formation pressure, whereby the 45 fluid in said tubing will be forced out of the well _ ' through the nipple I1 and around the valve ele ments 25 and 24 to enter the tubing at a point sub stantially at the bottom end thereof. It is note 50 worthy that the opening through the nipple Il is quite large so that a considerable amount of the gaseous fluid may pass into the lower end of the tubing in a relatively short time. In fact, this gas is permitted to enter the tubing at such a by said gaseous substance. 3, In a well flowing apparatus, a tubing adapt ed to extend into the well, means to admit well fluid into said tubing, and a balanced valve oper 50 atively independent of said first means adapted to admit a gaseous substance into said tubing ad jacent- to the lower end thereof below said first means when -the pressure of the fluid in said 55 rate that instead of mixing with the liquid within the tubing it forms a large bubble or gas piston tubing substantially equals the formation pres 55 sure, whereby the fluid in said tubing will be below the column of fluid which has been created within the tubing, and as gas continues to enter, it pushes the entire column of f_luid toward the 80 top of the well. No flow is permitted from the tubing into the chamber at the bottom of the well below the packing I0 because of the check valve forced out of the well by said gaseous substance. 4. In a well flowing apparatus, a tubing adapt ed to extend into the well, means to admit well fluid into said tubing at a point above the bottom 60 I4, and hence no substantial pressure is removed 65 from the piston at the bottom of the tubing until the liquid has been forced out of the tubing, the valves 25 and 24 will remain open until this column of liquid has been forced completely out of 70 the well. When this takes place, the pressure within the tubing is at once relieved and the natural pressure of the formation at the bottom of the well will tien force the piston 26 upward to close the valves ¿5 and 24, preventing further ingress of 75 gas under' pressure. Then the pressure at the thereof, a balanced valve for admitting a gaseous substance into said tubing below the point of ad mission of said well fluid, and means adapted to cause the opening of said valve when the pressure of fluid within said tubing bears a predetermined 65 relation to the natural formation pressure at the bottom of the well. y 5. In a well flowing apparatus, a tubing adapt ed to extend into the well, means to admit well fluid into said tubing, a balanced valve for ad 70 mitting a gaseous substance under pressure into said tubing adjacent to the lower end of same, and a plunger subject to the pressure within the lower end of said tubing and to the natural forma tion pressure at the bottom of the well and adapt 75 2, 128,073 v 3 ed to open said balanced valve when said pressure and a valve operable by a" predetermined ratio of within the tubing rises to substantially the value pressure between the interior and exterior of said tubing adjacent its lower end to admit said gase of said pressure in the bottom of the well. ous substance into said- tubing adjacent to its 6. In a well ñowing apparatus. means for seal » ing oiî the lower portion of the well to form a lower end. 8. In a well flowing apparatus, a means for pressure chamber, a tubing closed at its lower end having its lower end extending at least to sealing oif the lower portion of the well to form substantially the level of the upper end of said a pressure chamber, a tubing extending into said chamber, a check valve for admitting ñuid from chamber and closed at its lower end, a check valve for admitting ñuid from said pressure 10 said pressure chamber into said tubing, means for chamber into said tubing, at a point above the conducting gas under pressure to a point adja cent to the lower end of said tubing, and a valve , lower end of the tubing, means for conducting a operable by a pre-determined ratio of pressure gaseous substance under pressure to a point adja between the interior of said tubing adjacent its cent to the lower end of said tubing, anda valve lower end and the interior of said chamber at operable by a pre-determined ratio of pressure substantially the same level to admit the gaseous vbetween the interior and exterior of said tubing substance into said tubing adjacent to its lower adjacent its lower end to admit said gaseous sub stance into said tubing adjacent to its lower end. end. ' 9. In a well flowing apparatuspa tubing adapt 7. In a well flowing-apparatus, means for seal ing off the lower portion of the well to form a > ed to extend into the well, means to admit well pressure chamber, a tubing closed at its lower end and having its lower end extending at least to substantially the level of the upper end of said chamber, a check valve for admitting 'ilu'id from 25 said pressure chamber into said tubing at a point above the lower end of said tubing, means for conducting a gaseous substance under pressure to a point adjacent to the lower end of said tubing 5 10 , 20 fluid into said tubing, valve means below said iñrst means for controlling the admission of a gaseous substance into said tubing adjacent the lower end thereof, and means for fully opening said valve means when the pressure in said tubing 25 adjacent the bottom thereof attains a predeter mined relation to the formation pressure. THOMAS E. BRYAN.