US2053602A - Bleeder for deep well pumps - Google Patents

Description

Sept. 8, 1936. c. J. coBERLY BLEEDER FOR DEEP WELL PUMPS 2 Sheets-Sheel 1 Filed April 13, 1934 [/vv/vTo/e: CLARE/vea d Corsa/uy A rToR/VEY.

Sept. 8, 193.6.` c. J. coBERLY BLEEDER FOR DEEP WELL PUMPS l2 sheets-sheet 2 Fil'ed April l5, 1934 ffy WSA/TOR.' CLARENCE d CoERLY @Y oww/c Arrows/Ex Patented Sept. 8, 1936 UNITED STATES PATENT OFFICE sans mmsaroanmwmrmlrs camacebamrmsnnagcnmmm (knel-ation,

toldo el'Nevada ApplleationAnl-llll.

:comme Hy invention relates to deep well pmnpfand relates in to deep well pumps of fluid o type. f'

It is an objectrof the invention to provide a pumpstructure adaptedtobe ioweredtothebottomofawelLsuchpumpstl-ucturehavingameans for controlling the flow of fluids therethrough during the lowering of the same, for controlling theilowof fluids therethroughafterthepump structure has been brought into operative position at the bottom of the well. andfor controllingtheilowofuidspreliminarytoandduring the lifting of the pump from the well.

Although the invention may have valuable utility with various types of deep well pumps, it constitutes an improvement in the pumping mechanism disclosed in the copending application of Clarence J. Coberly,.Serial No. 623,171, led July 18, 1932, and entitled Liquid operated pump. Pumping mechanisms of this general character employ a pump unit to which an actuating uid is delivered through a pipe which extends downwardly through the well to the pump unit situated in the oil producing zone of the well. 'I'he pump unit comprises a motor section and a pumping section, the discharge of which is generally delivered into an oil delivery pipe which carries the oiltothetopof thewelland whichinmany instances is placed ina position to surround the pump unit and the pressure piping through which the actuating fluid is delivered to the pump unit. During the lowering of the pump unit into the well, a reverse pressure of huid is exerted through the discharge ports of the motor mechanism, and accordingly dirty oil from the well enters the mechanism and may also ow some distance up within the lower end of the pressui-e fluid delivery piping. 'I'his often results in entrance of abrasive substances into the operating parts of the pump mechanism.

An object of my invention is to provide a de-V vice susceptible to control from the top of the wellv for preventing a reverse flow of iluid through the pump during the operatlonf lowering it into podtion at the bottom of the well. The method of installation of this device and the pump unit with which it is used is covered in my co-pending application Serial No. 740,452, filed August'l, 1934, which is a continuation-impart of this application, and to which reference is hereby made.

Dlning the operation of the pumping device the pressure fluid delivery tube is filled with oil. It is desirable to provide a means which may be open during the pulling of the pump from the wellso thattheoilinthepressure iluiddelivery Bano, Nev., a oorporaiion 1m. sem No. man (cl. 10s-u) tubemaydrainmit,therebyavoidingwhatis known as a wet pulling jobfor, in other words. avoidingl the often encountered experience of having oil from the tubing spilled over the floor andsurroundingequipmentofaderrickasthe 6 result of a pulling Job.-

It is accordingly an object ofthe invention to provide a pumping device having a pressure huid delivery equipped with means for draining the saine'` during the pulling of the pump device l0 from the well.

It is also an object of the invention to provide a means for testing the supply tube for tightness without removing it from the weil.

A further object is to provide Aa means for cirl5 cuiating uuid from the -inner tube to the outer tube without operating the pump in order to clean the system. ,It is further possible to circulate in this manner and determine the friction loss under operating conditions. 20

Further objects and advantages of the invention will be made evident throughout the following part of the specication.

l Referring to the drawings, which are for illustrative purposes only,

' Fig. 1 is a sectional view showing a pumping device embodying my invention in position for operation inl a deep well.

Fig. 2 is a sectional view showing the control valve mechanism with the parts thereof in posiso tion for lowering the pump device into the well.

Fig. 3 shows the control valve with the parts thereof in pumping position.

Fig. 4 is a sectional view showing the control valve with the parts thereof in position for pulling the pump device from the well.

Fig. 5 is a cross section to enlarged scale on a plane represented by the line S-lof Fig. 4. Fig. 6 is an enlarged cross section on a plane represented by the line B-l of Fig. 4. Fig. 'I is an enlarged cross section on a plane represented by the line I-l of Fig. 4. Fig. 8 is an'enlarged cross section on a plane represented by the line 8-8 of Fig. 4.

Fig. .9 is an enlarged cross section on a plane ,represented by the line 8-9 of Fig. 4.

Pig. 10 is a fragmentary view showing the latch mechanism of the control device.

Fig.'11 is a projection of the inner tubular member of 1918.10 to show the cooperating channels in the face thereof.

InFig. lIsliowasti-ingofpipe creasing i! extending down into a well from a casing-head Il. 'From an intermediate fitting Il of the casinghead il an oil production pipe Il extends down 55 within me piping i: inw the oil producing one or the well. This oil production pipe has an opening Il at its lower end which extends through a conical seat II adapted to receive the lower end,

a cap iltting 24 through which nuid under pressure is conducted from a pipe 2l into the upper end of the delivery piping 23. A strainer or screen 23 of tubular form may be connected to the upper end of the control valve 22 so that the actuating pressure nuid. which ls generally clean oil, will have to pass through the screen 2l before it entersthe operating parts of the pumping mechanism. When the respective parts of the pumping mechanism 2| are in operating position, as shown in Fig. l, the clean pressure fluid is conducted down through the iiuid pressure delivery piping 23, the control valve 22, and the nipple Il into the pump unit 2l, where such iiuid operates in the motor mechanism of the pump unit 23 to reciprocate the pumping mechanism, which generally consists of a pumping piston operating within a pumping cylinder, as known to the art and as disclosed in the copending application hereinabove set forth.

The clean iiuid discharged from the power mechanism of the pump unit and the oil pumped from the well are both delivered into the space 21 existing around the pumping mechanism 2i within the discharge piping I3, and accordingly the two fluids are carried to the top of the well as a combined or single iiow, from whence they are delivered through the fitting Il to piping 23 leading to a suitable means for disposal of the production from the well.

My present improvement concerns the inclusion in the pump mechanism 2l of the means, represented by the control valve v22, for controlling the ilow of :luid through the pressure fluid delivery piping 23 and other parts of the pumping mechanism at different times. The preferred form of the control device, as shown in Figs. 2 to 11 of the drawings, includes a shell 23 which comprises an upper tubular member 33 and a lower tubular member 3l, and further includes an inner vertically slidable member 32. One of the parts of the control valve 22 is connectedto the pump unit 20, and the other of the parts is connected to the lower end 33 of the pressure iluid delivery piping 23. The preferred construction includes internal threads 3l at the lower end of the shell 29 vfor connecting the same to the nipple I3 which extends upwardly from the pump unit 20, and a iitting 35 threaded onto the upper end of the inner member 32 and onto the lower end 33 of the piping 23. The fitting 35 has an inner bore 33 into which the screen 23 is threaded so as to project upwardly within the lower portion of the piping 23.

The inner member 32 is of cylindrical form and is divided into upper and lower sections 31 and 33 by a circular rib or collar lll. The lower section 33 of the inner member 32 is slidable within the bore 4I of the lower tubular member 3i above a slightly enlarged bore l2 which provides an annular space I3 around the lower extremity of the section 33 when the inner member is in lowered position, as shown in Fig. 2. The upper section 30 of the shell 23 has a large lower bore Il, in which the collar Iii of the inner member 32 is slidable and an upper bore 4l of smaller diameter which is separated from the lower bore 4 by an annular concentric seat Il adapted to receive a conical face 31 formed on the upper part of the collar Il when the inner member 32 is in raised position relative to the shell 23, as shown in Fis. 3. In the upper part of the upper bore 43 diametrically opposing lugs 33 project inwardly into engagement with a depression 30 formed in the upper part of the upper section 31 of the inner member 32 below the fitting 3l. As shown in Figs. 5 and 6. the inwardly projecting lugs 33 mayV be formed from bodies of metal 5I welded, into notches 32 in the upper part of the upper tubular member 30. The depression 50 is clearly shown in Fig. and Fig. il which constitutes a development of the upper portion of the inner member 32 shown adjacent thereto. The depression 30 is milled in the upper portion of the upper section 31 of the member 32 so as to form a pair of diametrally opposed longitudinal or coaxial major channels Il, such maior channels 54 extending entirely to the top of the section 31 so that entrances Il are provided for entry of the lugs I3 into the depression 50 in assembling the respective parts of the control valve 22. Adjacent and parallel to each of the major channels Il are minor channels 33 which are diametrally disposed and are each connected to a major channel through an arcuate passage or channel 51 which extends across the upper end of each wall Bl separating a major channel 5l from a minor channel 53'. A depression or pocket 60 is formed in the upper end of each dividing wall 58 in which the lugs 4l rest when the shell 25 and the inner member 32 are in collapsed relation, as shown in Fig. 2. A spring 3| is set into a counterbore 62 in the lower end of the inner member 32 in such position that the spring will bear against a shoulder 33 formed near the lower Yend of the lower tubular member 3| when the parts 29 and 32 are in collapsed relation, as shown in Fig. 2, such spring 3l at this time exerting a iorce tending to move the parts 23 and 32 thereof outwardly, and thereby providing a force tending to hold the lugs 4l in seated engagement with the pockets 30 at the upper ends of the dividing walls 53.

In the preceding paragraph I have described a means for holding the shelll 23 and the inner member 32 in such position that a iiow of fluid from the member I3 to the piping 23, or from the exterior of the control valve 22 to the nipple i3 or the piping 23, cannot occur. It will be perceived that the inner member 32 has an axial passage 33 extending downwardly from the upper end thereof to radial ports 63 which are at this time positioned intermediate the ends of the bore Ii of the shell 29. The passage 64 connects through the fitting 35 and the screen 2B with the piping 23, and in view of the fact that .the ports 33 are closed by the closely iitting bore 4|, iluid cannot iiow through the passage 6I into the passage 23. Accordingly, the relation of the shell.

2l and the inner member 32 shown in Fig. 2 is employed during the lowering of the pumping mechanism 2l into the well, since the setting of the parts 23 and 32 in the positions shown in Fig. 2, prior to the lowering of the device into the well assures that no dirty fluid will pass from the well into the lower part of the pressure iiuid piping 23, and further. assures that a reverse i'iow of dirty fluid through the operating mechanism` of the pump unit 20 cannot occur. 'I'his reverse ilow is prevented by the control valve 22 by reapesage Ila having radial ports 3l. Y

When the pumping mechanism 2| is lowered into the piping I3 to such position that the lower end Ilengagestheseat I'I,asshownin1*ig. 1, the weight ci' the superimposed piping 23 will force the inner member 32 downwardly against the action oi the spring Il so as to lower the pockets 30 from engagement with thelower ends of the lugs I3. By turning the piping 23, the inner member I2 may be rotated in anti-clockwise direction so as to bring the upper ends of the major channels 54 into alignment with the lugs 43, as shown in Fig. 3, whereupon the inner member 32 may be liited until the tace I1 oi the collar 43 comes into engagement with the seat I3 formed near the upper end of the shell 29, thereby sealing oi! between `the'large bore 44 within the upper tubular member 3|! and the small bore I5 which communicates with the body of dirty oil existing within the lower portion oi the piping I5. The movement of the inner member 32 into this ,i'ully raised position relative to the shell 29 moves the radial ports 55 and 33 both into a position above the upper end of the bore 4| so that they are in open communication through the space 5l within the large bore Il in the upper portion oi the shell 29. The control valvey 22 is now in condition for the delivery of pressure iluid from the piping '23 to the pump unit 20. As soon as the space 43 in the lower part of the shell 23 is lled with uld under high pressure, the pressure of such iiuid will act downwardly against the pump unit 26 and will at the same time act upwardly against the inner member 32 so as to force the face l1 into pressural engagement with the seat 4I, thereby assuring a positive seal between the shell 29 and the inner member 32 during the operation of the pumping mechanism 2 i.

When it is desired to pull the pumping mechanism 2|, the pressure iiluidI delivery piping 23 is lowered to an extent bringing the arcuate passages 51 down to the lugs 53, whereupon rotation oi the piping 23 may be employed to turn the innerl member 32 in clockwise direction so as to bring the upper ends of the relatively short vminor channels 56 into alignment with the lugs. Then, by raising the piping 23, the inner member 32 may be raised to an intermediate position determined by the engagement oi'. the lugs 5B with the lower end walls 53 of the channels 55, as shown in Fig. 10. This movement of the inner member 32 into an intermediate position relative to the shell 29 brings the ports 55 into a position above the upper end of the bore 4I but leaves the ports 55 intermediate the ends of the bore 4I. The axial passage 54 of the inner member 32 now provides communication of the pressure fluid delivery piping 23 with the exterior of the control valve 22 and the interior of the piping I5, through the ports 55, the space 51 within the bore M, the bore I5, together with the lower portions of the major channels 54. Accordingly, during the pulling of the pumping device 2|, the parts 29 and 32 are retained in the respective positions thereof shown in Fig. 4, and the oil drains readily from the piping 23 through the openings now provided therefor in the upper portion o f the control valve 22.

The device, with the parts thereof disposed as shown in Fig. 4, has two additional utilities,

namely; to permit circulation of oil down through the pressure pipe 23 and upwardly through the discharge pipe Il without operating the pump, Ind to determine the friction head o! the dis.- chargespacebetweenthepipes Ilandll. The valueotthisi'rictionheadl'naybeemplyed during various periods of operation '-tor determining the level from whichoil isbeing pumped.

To circulate oil through the discharge pipe Il.. thememberl'lismovedintothepositionin which it is shown in-Fig. 4 wherein the'radial openings Il are closed, but the radial openings 35 are in such position as to provide a communication of the axial .1 e 34 with the space ll, so that the oil pumped downwardly through the pressure pipe 2l will be diverted through the openings l5, the space 31, andthe upper end of the member 3|) intol the space within the pipe I5 outside the pump mechanism and the pressure pipe 23, such oil passing upwardly through the pipe I5 and being ilnally discharged through the pipe 28. The power required to circulate the oil in this manner provides a means for determining the friction head with which the annular space between the members I5 and 23 will resist a iiow of oil therethrough, and with the friction head of this passage known it is possible to compute the level oi oil in the well from the power required to pump oil from the well.

It will be recognized that the device provides a simple means for testing the supply tube 23 ior tightness. Ai'ter the pump is rst lowered into the well substantially toits operating position, and with the ports 55 and 55 thereof entirely closed as shown in Fig. 2, iluid under pressure may be applied to the upper end of the piping 23 to determine whether or not there are any leaks therein. A

Although I have herein shown and described my invention in simple and practical form, it is recognized that certain parts or elements thereof are representative of other parts, elements, or mechanisms which may be used in substantially the same manner to accomplish substantially the same results; therefore, it is to be understood that the invention is not to be limited to the details disclosed herein but is to be accorded the full scope of the following claims.

I claim as my invention:

1. A uld operated deep well pump ofthe character described, including: a pump unit adapted for placement in the bottom of a well, said pump unit having a fluid operated power mechanism and a pumping mechanism actuated thereby; pressure fluid piping carrying actuating uid down through the well to said pump unit therein; and a control valve near the lower end of said piping havinga plurality of passages therein and means for connecting said passages so as to connect the interior of said piping with said power mechanism of said pump unit, to connect the interior of said piping with the exterior of said control valve, or to entirely close the iiuid passage formed by the lower end of said piping.

2. A uid operated deep well pump of the character described, including: a pump unit adapted for placement in the bottom of a well, said pump unit having a iluid operated power mechanism and a pumping mechanismactuated thereby; pressure fluid piping carrying actuating iiuld down through the wel: to .said pump unit there.- in; and a control valve near the lower end oi said piping having a-plurality ot 1 'A therein and means operative by movement applied through said piping to relatively arrange said passages so as to connect the interior of said piping with said power mechanism of said pump 75 4 y unit, to connect the interior of said piping with the exterior oi said control valve, or to entirely close the iiuid passage formed by the lower end o! said Piping. A

3. A fluid operated deep well pump of the character described, including: a pump unit adapted for placement in the bottom of a well, said pump unit having a fluid operated power mechanism and a pumping mechanism actuated thereby; pressure fluid piping carrying actuating huid down through the well to said pump unit therein; and a control valve near the lower end of said piping having upper and lower relatively movable parts, said upper part being connected to the lower end oi said piping and said lower part being connected to said pump unit, there being passage means in said control valve, said passage means being controlled by. the change oi.' said upper and lower parts of said control valve between three diierent positions, through movement oi.' said piping relative to said pump unit, to connect the interior of said piping with said power mechanism of said pump unit, to connect the interior of said piping with the exterior of said control valve, or to entirely close the iiuid passage formed by the lower end of said piping.

4. A uid operated deep well pump of the character described, including: a pump unit adapted for placement in the bottom of a well, said pump unit having a. iluid operated power mechanism and a pumping mechanism actuated thereby; pressure iluid piping carrying actuating fluid down through the well to said pump unit therein; and a control valve near the lower end of said piping having upper and lower relatively movable parts, said upper part being connected to the lower end of said piping and said lower part being connected to said pump unit, there being passage means in said control valve, said passage means being controlled by the change of said upper and lower parts of said control valve between three different positions, through movement oi' said piping relative to said pump unit, to connect the interior of said piping with said power mechanism of said pump unit when said upper part is in raised position relative to said lower part, to connect the interior oi said piping with the exterior of said control valve when said upper part is in an intermediate position relative to said lower part, or to entirely close the uid passage formed by the lower end o! said piping when said upper part is in lowered position relative to said lower part, there being means for holding said parts in said relative positions.

5. A iluid operated deep well pump of the character described, including: a pump unit adapted for placement in the bottom of the well, said pump unit having a fluid operated power mechanism and a pumping mechanism actuated thereby; pressure uid piping carrying actuating iluid down through the well `to said pump unit therein; and a control valve near the lower end of said piping having upper and lower relatively movable parts, said upper part being connected to the lower end of s'aid piping and said lower part being connected to said pump unit, there being passage means in said control valve, said e means being controlled by the change oi' said upper and lower parts of said control valve between three diierent positions, through movement of said piping relative to said pump unit. to connect the interior of said piping with said power ot said pump unit, to connect the interior oi' said piping with the exterior o! said control valve, or to entirely close the fluid passage formed by the lower end of said piping. there being latch means operative between said upper and lower parts to retain said parts in said three positions;

6. A i'luid operated deep well pump of the character described, including: a pump unit adapted for placement in the bottom oi' a well, said pump unit having a fluid operated power mechanism and a pumping mechanism actuated thereby; pressure fluid piping carrying actuating fluid down through the well to said pump unit therein; and a control valve near the lower end of said piping having upper and lower relatively movable parts, said upper part being connected to the lower end of said piping and said lower part being connected to said pump unit. there being passage means in said control valve, said passage means being controlled by the change ol said upper and lower parts of said control valve between three different. positions, through movement of said piping relative to said pump unit, to connect the interior of said piping with said power mechanism of said pump unit when said upper partis in raised position relative to said lower part, to connect the interior of said piping with the exterior of said control valve when said upper part is in an intermediate position relative to said lower part, or to entirely close the fluid passage formed by the lower end of said piping when said upper part is in lowered position relative to said lower part, there being latch means operative between said upper and lower parts to retain said parts in said raised, intermediate, and lowered positions, said latch means comprising a lug on one of said parts and three shoulders spaced upon the other ot said parts so as to be engaged by said lug in said three relative positions of said parts.

7. A control valve of the character described, for use at the lower end of a pump tube, including: an upper member and a lower member relatively movable between three positions'oir engagement, said upper member being adapted for attachment to the lower end of said pump tube and said lower member being adapted for attachment to a tube extending downwardly therefrom, each of said members having a passage communicating with the tube to which itis connected, one of said members having a port communicating with the exterior of said control valve, said passages being so placed in their respective members that they will be connected together in open communication when said members are in one of said three relative positions, that the passage in said upper member will be connected to said port when said members are in a second of said three relative positions, and that at least one of said passages will be closed when said members are in a third of said three relative positions; and means controllable from a remote point for holding said members selectively in said three relative positions.

8. A control valve of the character described, for use at the lower end of a pump tube, including: 4an upper member and a lower member relatively movable between three positions of engagement, said upper member being adapted for attachment to the lower end of said pump tube and said lower member being adapted for attachment to a tube extending downwardly therefrom, each of said members having a passage communicating with the tube to which it is connected, one of said members having a port communicating with the exterior oi said control valve, said passages being so placed in their reaosaeoa connected to said port when said members are ini,

a second ci' said three relative positions, and that at least one of said passages will be closed when said members are in a third of said three relative positions; and means controllable by movement of said pump tube and said upper member relative to said lower member for holding said members selectively in said three relative positions.

9. A control valve of the character described, for use'at the lower end oi a pump'tube, including: an upper member and a lower member relatively movable between three positions of engagement, said upper member being adapted for attachment to the lower end of said pump tube and said lower member being adapted for attachment to a tube extending downwardly therefrom, each of said members having a passage communicating with the tube to which it is connected, one oi' said members having a port communicating with the exterior or said control valve, said passages being so placed in their respective members that they will be connected together in open communication when said members are in one o! said three relative positions, that the passage in said upper member will be connected to said port when said members are in a second oi said three relative positions, and that at least one of said passages will be closed when said members are in a third of said three relative positions; and means operative to selectively maintain Vsaid members in said three relative positions in accordance with the utility desired from said control valve.

10. A control' valve of the character described, for use at the lower end of a pump tube, including: an upper member and a lower member relatively movable between three positions oi' engagement, said upper member being adapted for attachment to the lower end of said pump tube and said lower member being adapted for attachment to a tube extending downwardly therefrom, each of saidI members having a passage communicating with the tube to which it is connected, one of said members having a port communicating with the exterior of said control valve, said passages being so placed in their respective members that they will be connected together in open communication when said members are in one of said three relative positions, that the passage in said upper member will be connected to said port when said members are in a second oi said three relative positions, and that said passages will be closed when said members are in a third of said three relative positions; and means operative to selecy tively maintain said members in said three relative positions in accordance with the utility desired from said control valve.

1l. .A control valve of the character described, for use at the lower end oi a pump tube, including: a lower member having means at its lower end for connecting it to a downwardly projecting tubular member, said lower member having a bore with a restricted portion therein; an upper member slidable into the upper end oi said lower member, said upper member having means at its upper.v

end for connecting it to said pump tube and having a passage leading downwardly from its upper end to an upper lateral port and a passage leading upwardly from its lower end to a lower lateral port below said upper lateral port; and means for holding said members in three relative positions comprising collapsed position. intermediate plaoedrelativetosaidpositionsthatsaidports willbeinsaidrestrictedboreportionoisaidlower memher when'sald members are in relatively coi-f lapsedpositiomandthatsaidupperportwillbe open to the exterior when said members are in said intermediate relative position, there being means ior sealing between said members when they are in said extended relative position.

l2. A device as donned in claim ll, in w said holding means comprises a lug projecting from one of said members and a channel in the other oi' said members in a position to receive said lug, said channel being so formed as to provide three shoulders spaced longitudinally with respect to the axes of said members tor receiving said lus.

.13. A control valve ot the character described.

for use at the lower end oi a pump tube, includseat near its upper end; an upper member slidable into the upper end oi said lower member, .said upper member having means at its upper end for connecting it to said pump tube, an external seat intermediate the ends thereof, a passage leading downwardly from its upper end to an upper lateral port. and a passage leading upwardly from its lower end to a lower lateral port below said upper lateral port; and means for holding said members in three relative positions .comprising collapsed position, intermediate position, and extended position, said ports being so placed relative to said positions that said ports will be in said restricted bore portion of said lower member when said members are in relatively collapsed position, that said upper port will be open to the exterior when said members are in said intermediate relative position, and that said seats will engage when said members are in said extended relative position so as to seal between said members.

i4. A device as deilned in claim 13, in which said holding means comprises a lug projecting from one of said members and a channel in the other of said members in a position to receive said lug, said channel being so formed as to provide three shoulders spaced longitudinally with respect to the axes of said members for receiving said lug.

15,. A iluid operated deep well pump of the character described, including: a pump unit adapted for placement in the bottom oi a well, said pump unit having a uid operated power mechanism and a pumping mechanism actuated thereby; pressure uid piping carrying actuating iluid down through the well to said pump unit therein: and a control valve to close the lower end of said piping, said valve being se formed as to be operated by movement of said piping relative to said pump unit.

16. A iiuid operated deep well pump of the character described, including: a pump unit adapted for placement in the bottom oi' a well, said pump unit having a iluid operated power mechanism and a pumping mechanism actuated thereby; kpressure iluid piping having a passage therethrough for carrying actuating iluid down through the well to said pump unit therein; and a control valve near the lower end o1' 'said piping operated by movement of said iiuid piping to close the lower end of said passage so that no iiuid will iiow through the same.

l1. A nuid operated deep well pump of the character described, including: a pump unit adapted ior placement in the bottom of a well, said pump unit havingy a uid operated power lluld may liow therefrom to said pump unit.

CERTIFICATE aosaeos 20. A iiuid operated deep" well pump of the character described, including: a pump unit adapted for placement in the bottom of a well, said pump unit having a iiuid operated power CLARENCE J. COBERLY.

or cssscrior.

mechanism and a pumping mechanism actuated mechanism and a pumping mechanism actuated 5 thereby; pressure iluid piping carrying actuating thereby; pressure fluid piping having a passage iiuld down through the well to said pump unit therethrough for carrying' actuating fluid down therein; and a control valve near the lower end through the well to said pump unit therein; and of said piping having a plurality of passages means disposed near said pump unit operative to 1o therein and means for connecting said passages prevent a now oi iluid through said power mechl0 so as to connect the interior of said piping with anism of said pump unit. said power mechanism of said pump unit, or to 2l. A fluid operated deep well pump of the connect the interior of said piping with a space character described, including: a pump unit external to said control valve. adapted for placement in the bottom oi a well,

l5 18. A method of determining the friction head said pump unit having a fluid operated power 15 of the discharge tube of a iluid operated deep well mechanism and a pumping mechanism actuated pump, comprising: placing in the well a pump thereby; pressure iluid piping having a passage and a fluid supply tube; connecting the lower end therethroughv for carrying actuating iluld down of the iiuid supply tube with the lower portion through the well to said pump unit therein; and

of the discharge tube for delivering an actuating a control valve near the lower end of said piping 20 fluid under pressure to the pump; and circulatoperative to close the lower end of said passage so ing iiuid through the supply tube and the disthat no iiuid will ow through the same. charge tube without operating said pump. 22. A iiuid operated deep well pump of the 19. A fluid operated deep well pump of the character described, including: a pump unit character described, including: a pump unit adapted for placement in the bottom of a well, 25 adapted for placement in the bottom of a well, said pump unit having a iiuid operated power said pump unit having a iluid operated power mechanism with a pressure iiuid inlet passage, mechanism and a pumping mechanism actuated and a pumping ,mechanism actuated by said thereby; pressure fluid piping having a passage power mechanism; pressure fluid piping carrying therethrough for carrying actuating fluid down actuating tluid down through the well to said 30 through the well to saidv pump unit therein; and inlet passage of said power mechanism; and valve a control valve near the lower end of said piping means operative to close said inlet passage and operative to close the lower end of said passage to connect the lower end of said pressure iiuid so that no fluid will iiow through the same, and piping to the exterior of said valve means.

to open the lower end oi said passage so that 35 Patent No. 2,055,602, Selteniar 8f' 1956- CLARENCE J COBERLY.

It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page 6, first column, line 20-21, claim 18, strike out' the words "for delivering an actuating fluid under pressure to the pump" and insert the same after the word "tube" and before the semicolon in line 18, same claim; and that the said Letters Patent should be read with this correction therein that the` Same may conform to the record of the case in the Patent Office.

' Signed and sealed this 3rd day of November, A. D. 1936.

Henry Van Arsdale (Seal) Acting Commissioner of Patent-s.

l1. A nuid operated deep well pump of the character described, including: a pump unit adapted ior placement in the bottom of a well, said pump unit havingy a uid operated power lluld may liow therefrom to said pump unit.

aosaeos 20. A iiuid operated deep" well pump of the character described, including: a pump unit adapted for placement in the bottom of a well, said pump unit having a iluid operated power CLARENCE J. COBERLY.

CERTIFICATE or corremos.

mechanism and a pumping mechanism actuated mechanism and a pumping mechanism actuated 5 thereby; pressure iluid piping carrying actuating thereby; pressure fluid piping having a passage iiuld down through the well to said pump unit therethrough for carrying' actuating fluid down therein; and a control valve near the lower end through the well to said pump unit therein; and of said piping having a plurality of passages means disposed near said pump unit operative to 1o therein and means for connecting said passages prevent a now oi iluid through said power mechl0 so as to connect the interior of said piping with anism of said pump unit. said power mechanism of said pump unit, or to 2l. A fluid operated deep well pump of the connect the interior of said piping with a space character described, including: a pump unit external to said control valve. adapted for placement in the bottom oi a well,

l5 18. A method of determining the friction head said pump unit having a fluid operated power 15 of the discharge tube of a iluid operated deep well mechanism and a pumping mechanism actuated pump, comprising: placing in the well a pump thereby; pressure iluid piping having a passage and a fluid supply tube; connecting the lower end therethroughv for carrying actuating iluld down of the iiuid supply tube with the lower portion through the well to said pump unit therein; and

of the discharge tube for delivering an actuating a control valve near the lower end of said piping 20 fluid under pressure to the pump; and circulatoperative to close the lower end of said passage so ing iiuid through the supply tube and the disthat no iiuid will ow through the same. charge tube without operating said pump. 22. A iiuid operated deep well pump of the 19. A fluid operated deep well pump of the character described, including: a pump unit character described, including: a pump unit adapted for placement in the bottom of a well, 25 adapted for placement in the bottom of a well, said pump unit having a iluid operated power said pump unit having a iluid operated power mechanism with a pressure iiuid inlet passage, mechanism and a pumping mechanism actuated and a pumping ,mechanism actuated by said thereby; pressure fluid piping having a passage power mechanism; pressure fluid piping carrying therethrough for carrying actuating fluid down actuating tluid down through the well to said 30 through the well to saidv pump unit therein; and inlet passage of said power mechanism; and valve a control valve near the lower end of said piping means operative to close said inlet passage and operative to close the lower end of said passage to connect the lower end of said pressure uid so that no fluid will iiow through the same, and piping to the exterior of said valve means.

to open the lower end oi said passage so that 35 (Seal) Patent No. 2,055,602, Selteniar 8f' 1956- CLARENCE J COBERLY.

It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page 6, first column, line 20-21, claim 18, strike out' the words "for delivering an actuating fluid under pressure to the pump" and insert the same after the word "tube" and before the semicolon in line 18, same claim; and that the said Letters Patent should be read with this correction therein that the` Same may conform to the record of the case in the Patent Office.

' Signed and sealed this 3rd day of November, A. D. 1936.

Henry Van Arsdale Acting Commissioner of Patents.

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