US1557294A - Deep-well pump - Google Patents

Description

Oct. I3, 1925- D. F. JOHNS DEEP WELL PUMP Filed oct. 17, 1924 Patented Oct. 13, 1925.

- UNITED sm'rns DONALD AFRAN-K JOHNS, or MAR-Icone, cAIiIroRNIA.

nnen-WELL PUMP.

Appiifcatioir med october 1v, 1951. semi mi. 944,151.

To all whom t lmay conccrln.'

Be it knownl that I, DoNALD'F. Jorrit-ma citizen of the United States, residing in Maricopa,` in the county of Kern, State of California, have invented a new and useful vDeep-Tell Pump, or `which the' following is al specification.

This invention relates to-deepwvellpumps, and particularly to that type ofl pump in which a pump barrel-or liner is ylovvere'd into the flow pipe on the pump rod, the liner being, provided. withv means for anchoring it at the desired depth vvithin the rlovv pipe. The general object of this invelr'itionA is'to provide improved means for effecting the anchoring'of the liner when it arrives at the desired depth, and the improvement involves the Acooperating construction of the 'flow "pipe andA liner g-it is' also an object of' the invention to Provide improvedmeans forA packingjthev4 liner,- against the Wall of* the `loiv pipe and thereby develop aconsiderableresistance to longitudinal movement or the liner in thel ii'o'vv pipe, my. general purpose being', inV this. connection', to relieve the Iatching'device of" a large part ofptlie'up-L thrust which? the. pump piston would otherwise transmit througi'i 'the liner to; the. latchin'g device in other Words, one or the 'functions of my linerpacknjg is to relieve the stress on' the latching device.

Further' objects of the' invention ivill ape pear' hereinafter. y

The'invention' consistsin the novel parts and@ combi-natonuof "parts to be described hereinafter, all of' whichy ontrbu'te to pro'- duce aneiricient deep-*Well pump;

preferred. embodiment ofithe invention is described in' the following specification', While the broad.v scope ory the invention is' pointed out in the 'appended claims'.

Fig; l'is a vertical sectio'nthrou'gh' acasingand .flow pipe, broken away, and illus# trati'ng' the` general arrangement of all of the parte ori-,he invention. A` FigQ" is @al viewsi'milartoFigure 1`,`bu`t upon an enlarged' scale, Eand. illustratfir'ig-. the` construction gf' the floiv" pipe, `the latcl'ring means andthe packing means; This" vi'evv' shows the latching device in its latchingLposixtion, that is to say,Y itsh'ovs the parts 4of this devicein the relation they have when VWell casing' within'which e, new pipe 2 is located.

Within the iiovv'pipeither'e is provided a liner 3, the lovver portion 4 of vvh-ic'h operates as' a" pump barrel in -vv'liich the piirnp piston 5 recipr'ocates. I providel means `for lashing the nner inv the new pipe; nidi uns means preferably includes a' la'tching device 6 (Se Figure incliiding a dog, but preferably two dogs which are guidedout- War'dly in' openingsinthe Wall theliHe-r,

'the outer end of each dogfhavig' an in,

When the new pipe 21 is eenstnicted, l connect init a special connectin'orf tube 9 which is provided with engaging niean's'or 'socket-means' to cooperate fvvith'the: latch device. In the present instance thisengag-r ing ineans' is in :the forni of a! circumferential groove l0 which" has an" annirlar" horizontal Shoulder 11l er its-eide to eocperateniththe upper sides' of the latches `"o'r' dogs 7 `to"prevent the'lin'er from being movedup'vvar'dly by the'uptvardn'iovement o'ffthe ptrnip pis-` ton 5, eterrthe' liner 'hasbeen anchored. The latches ordogs2 7 are contrbllefdby actu-4 ating members" 12",v e'ac'hof vvhich' is'I in the' form of a leverI`4 pivotedon a horizontal rocker 'pin lrnounted inthe adjacerrtporl tionof the liner below the' d'ogs,and'th'ese actuating levers' are` provided ivithmea'ns t'o" actuate` the' latchingdevi'cel intoits engaging position.' In the" present instance this means'is in the' forni or`t`\vo leaf springs 14 V attached respectively t0 the" lovvervends of the' ylevers I2 and, thrnsting against"i the inner face" off :the Wall of't'helin'er, ,see Figi-L 111162" l Y The pump rod 15, vvhich is disposed vvith'- in the iiow pipe and which extends down from the mouth of the wall, is provided with suitable means to engage the latching device tohold the same in its retracted position while the liner is being lowered within the flow pipe. For this purpose, I provide the lower end of the pump rod with a mandrel 16, the upper end of which is formed into a tapered portion or substantially conical nose 17. This nose, being formed adjacent the rod, of Course engages the inner sides of the levers.

When the liner is being lowered into the well, this conical nose is in engagement with heads 18 which are formed at the lower ends of the levers 12, see Figure 3. This operates to hold the levers so that they incline inwardly at their upper ends and hold the dogs 7 in a retracted position. Each dog 7 is formed with a head 19 and the upper end of each lever is bifurcated to engage the dog adjacent the head.

I provide cooperating engaging means between the liner and the flow pipe preferably located above the socket means 10, to stop the liner when the latching device comes into alignment with the cooperating engaging means of the flow pipe, that is to say, Vthe circumferential groove 10. For this purpose I provide a shoulder within the iiow pipe which engages a corresponding shoulder on the liner. In the present instance, I employ a bushing 2() (see Figure 3) which is countersunk in the inner face of the liner and provided on its' inner face with an annular shoulder 21. The liner is vprovided on its outer side with an annular shoulder ,22, which engages the shoulder 21 as the liner descends through the flow pipe. During this descent, the liner is supported through the agency of the levers 12, the heads 18 of which rest onthe conical end 17 of the mandrel, Figure 3 shows the relation of the parts while the pump rod and liner are being lowered. As soon as the shoulder 22 strikes the 'shoulder 21, the downward movement ofthe liner stops and when this occurs the dogs 7 will be in alignment with the groove 10; then afurther downward movement of the pump rod will carry the conical end 17 down past the heads 18 and the springs 14 will then operate the levers 12 to force the dogs out into engagement with the groove 10 and under the shoulder 11. The inclined end face 8 of each dog 7 enables it to slip readily past the shoulder 21. Each dog may be provided with a cross pin 23 or a collar to receive the outward thrust of the adjacent forked end of thelever when the lever is forcing the dog outwardly. v

At the lower end of the liner a foot valve 24 is carried, past which the oil or other liquid Hows upwardly into the lower end of piston 5 carries a lower valve 25 and the upper end of the piston carries an upper valve 26. The piston 5 is tubular so that its bore 27 operates as a duct to permit upward iiow of the liquid in the piston on each down stroke of the pump. The oil that passes upwardly above the upper valve 26 is then forced up at each upstroke through the upper portion of the liner and past the mandrel 16. About opposite the mandrel and below the latching device I provide packing means for packing the liner within the flow pipe. This packing prevents leakage of oil down past the liner, but it also performs the function of fixing the liner to the iiow pipe, so that a large part of the upward thrust on the liner, caused by the upward movement of the piston, will be taken up at this point, and this reduces the upwardthrust which would otherwise be transmitted to the latches 7. In providing for this packing, I provide a special coupling 28 (see Figure 2), the lower end of which is secured to the upper end of the pump barrel, and thel upper end of which is attached to a packing sleeve 29. The upper end ofthis packing sleeve is attached to the upper section 30 of the liner, which carries the latching device.

The sleeve 29 carries a soft packing ring 31 on its outer side and I provide means for admitting the liquid pressure to the inner face of the soft packing ring 31 so as to press it out forcibly against the inner face .ofthe wall of the flow pipe. For this purpose I provide the outer side of the sleeve 29 with a circumferential groove 32 which communicates with the interior of the sleeve through one or more openings 32a.

With this construction, ,it will be evident that the liquid pressure due to the head of the liquid in the flow pipe, will press the soft packing outwardly. In order to hold the soft packing in place at each end, the coupling 28 is provided with an overhanging annular flange 33, which projects over the lower end of the packing ring, which is of reduced diameter at this point. In a similar manner, at the upper end of the sleeve 29 I provide a ring 34 which is threaded on the upper end of the sleeve,and this ring has a iiange 35 at its lower end which engages over a similar reduced end at the upper end of the packing ring. The packing ring 31 is preferably made yof soft rubber. It is understood that theI embodiment of the invention described herein is only one of the many embodiments this invention may take, and I do not wish tobe limited in the practice of the invention, nor in the claims, to the particular embodiment set forth. y

What I claim is Y Y 1. In a pump for deep wells, the combination otr a linerfa flow-pipe having aybore receivingV the liner, f a -latchvdevice including apdog mounted-on the liner to.r anchor it in the flow-pipe, said {low-pipe having socket means to cooperate with the latch-.device in anchoringthe liner, actuating means. for the latch-device with means tor moving the latch device into its engaging: position, a pump-rod having a mandrel cooperating with the actuating means to hold the latchdevice in its retracted position in lowering the liner within the flow-pipe, said liner and said flow-pipe having cooperating engaging means located above the said socket means, for stopping the downward movement of the liner when the latch device is opposite to the said socket-means of the flow-pipe, said actuating means for the latch-device operating upon a further downward movement of the pump-rod to permit the latchdevice to engage the socket-means and thereby anchor the liner in the flow-pipe, said dog having an inclined outer face enabling the same to pass the engaging means on the l'low pipe.

2. In a pump for deep wells, the combination of a liner, a How-pipe having a bore receiving the liner, a latch-device having a plurality of latching levers extending longitudinally of the liner mounted on the.

liner to anchor it in the flow-pipe, said flow-pipe having socket means to cooperate with the latch-device in anchoring the liner, actuating means for the latch-device with means for moving the latch device into its engaging position, a pump-rod having a mandrel with a tapered portion adjacent the rod, having a face to engage the levers on their inner sides, and cooperating with the levers and the actuating means to hold the latch-device in its retracted position in lowering the liner within the flow-pipe, a bushing mounted in said How-pipe and having a shoulder, said liner having a shoulder cooperating with the first named shoulder to stop the. downward movement of the liner when the latch-device is opposite to the said socket-means of the flow-pipe, said actuating means for the latch-device operating, upon a further downward movement of the pump rod, to permit the latch-device to engage the socket-means and thereby anchor the liner in the flow-pipe.

3. In a pump for deep wells, the combination of a liner, a flow-pipe having a bore receiving the liner, a latch-device mounted on the liner to anchor it in the flow-pipe, said flow-pipe having socket means to cooperate with the latch-device in anchoring the liner, actuating means for the latchdevice with means for moving the latch device into its engaging position, a pump-rod having a mandrel with a substantially conical face engaging with the actuating means and located adjacent the rod to hold the latch-.device in `its retracted position: inflow-4 ering the liner within the flow-pipe, a bush.`

ing mounted in the flow-pipe, a coupling connected in the flow-pipe "retaining the bushing, said bushing havinga shoulder fand said liner having a shoulder to cooperate with` the `first named shoulder to 'stopt the downward movement of the linerwhen the latch device is opposite to the said socket means, said actuating means for the latch device operating, upon a further downward movement of the pump rod, to permit the latch-device to engage the socket means and thereby anchor the liner in the flow-pipe.

4. In a pump for deep wells, the combination of a liner, a flow-pipe having a bore receiving the liner, `a pump-rod, means controlled by the pump-rod for latching the liner within the flow-pipe, a piston carried by the pump rod to reciprocate within the liner, said liner including a tubular packing sleeve, the interior whereof receives the liquid being pumped, said sleeve having an opening through the wall thereof, a soft packing ring surrounding the sleeve at the said opening so that the liquid pressure within the sleeve forces the soft packing ring against the wall of the flow-pipe, and means for securing the ends of the soft packing ring.

5. In a pump for deep wells, the combination of a liner, a flow-pipe having a bore receiving the liner and having a circumv ferential groove on the inner face of its wall, a latch-device having movable engaging dogs mounted on the liner to engage the said groove and anchor the liner in the flow-pipe, actuating members for the dogs with means to move the dogs into their engaging position, a pump-rod having a piston with a mandrel having a substantially conical face adjacent the pump-rod above the piston engaging the latch-device and cooperating with the actuating members to hold the dogs retracted in lowering the liner within the flow-pipe, said liner and said flow-pipe having shoulders respectively operating to engage each other and stop the downward movement of the liner when the dogs are in alignment with the said groove, said actuating members for the dogs operating upon a further downward movement of the pump-rod and mandrel, to actuate the dogs to latch the liner within the flow-pipe.

6. In a pump for deep wells, the combination of a liner, a flow-pipe having a. bore receiving the liner, a latch-device having movable engaging dogs mounted on the liner to anchor the liner in the flow-pipe, said flow-pipe having socket means to cooperate with the dogs in anchoring the same, actuating members for the dogs with means to move the dogs into their engaging position, a pump rod with a piston and a mandrel having a substantially conical face alignment with the said socket means of the adjacent the rod above the piston, engaging flowpipe, said actuating members for the 10 the latch-device and cooperating with the dogs operating upon a further downward actuating members to hold the dogs retractmovement of. thepump-rod to actuate the ed in lowering the liner within the flowdogs to latch the liner Within the flow-pipe.

pipe, said liner and said flow pipe having Signed at Huntington Beach, Cal., this engaging means for'stop ing the downward 30th day of Sept. 1924. movement of the liner w en the dogs are in DONALD FRANK JOHNS.

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