US1743259A - Pumping apparatus - Google Patents

Description

Jan. 14, 1930. |.B.w1NsoR I I PUMPING APPARATUS Filed June 2l, 1928v A TTORNEY Mm a 7 0 off/.z- .6. :i111: Jfl; n

Patented Jan. 14, 1930 IRWIN B. WINSOR, OF TULSA, OKLAHOMA IPUMPING APPARATUS Application filed June 21,

My invention relates to apparatus for conducting a flow of fluid from wells and constitutes an improvement over my previous Patent No. 1,637 ,629. A

The principal object of my present invention is to provide for the operation of a pump at the bottom of a well by a power generator, preferably an air motor, positioned in the well casing, above and'in close proximity to the pump, thereby eliminating the usual string of sucker rods connecting the pump with actuator means at the top of a well.

A further object of the invention is to divide and seal the well into upper and lower portions by means of a packer interposed be tween the motor and pump and having sealed relation with the casing, so that the casing serves as a conduit for conducting the fluid from a. well.

A further object of the invention is to provide valve outlet passages Vin the packer, whereby gas pressure accumulating in the lower well portion may be admitted to the upper well portion and assist in lifting the fluid upwardly through the well.

In accomplishing these and other objects ot the invention, I have provided improved details of structure, the preferred forms of which are illustrated in the accompanying drawings, wherein:

Fig. 1 is a central sectional view of the lower portion of an oil well showing the apparatus applied therein.

"J Fig. 2 is an enlarged sectional view of the 'lower part of the apparatus.

Fig. 3 is an enlarged fragmentary sectional view of the upper part of the apparatus showing the connection of the plunger rod with the piston rod of the motor.

Fig. 4 is a section on the line 4 4 of Fig. 2.

Referring in detail to the drawings:

1 designates an oil well lined with casing 2 having a casing shoe 3 at its lower end which rests on the cap rock 4 and thus serves to support the casing. The cap rock 4 overliesl the oil sand 5 and an oil pocket 6 formed in the sand contains oil 7 which flows through the sand into the pocket.

My pumping apparatus in its order of as- 1928. Serial No. 287,110. y

sembly from the bottom of a well includes a strainer 8 resting on the bottom of the well pocket, a pump 9 supported on the strainer and fitted at its upper end with a coupling collar 10. A well packery 11 is mounted in the coupling and fitted at its upper end with a liner 12 supporting an air motor 13, the motor being connected with a compressor or other source of compressed air by a conduit 14 extending upwardly through the well casing.

rlhe strainer 8 by its engagement with the bottom of the pocket 6 serves to support the assembled pumping apparatus, and ports 15 adjacent its upper end serve to strain the fluid entering therein for displacement from the well by the pump 9. A collar 16 on the strainer includes a web 17 carrying a standing valve 18 whereby fluid entering the pump from the strainer is checked from return 70 How to thevwell pocket.

The pump 9 comprises a barrel 19 mounted in the collar 16 and fitted with a piston 20, the piston being provided with a central opening 21 fitted with a ball check valve 22 and 75 threaded at its upper end for connection with a tubular plunger rod 23. Y

Attached to the upperend of the pump barrel 19 is the coupling collar 10 engaged by a nipple 25 provided with an enlarged 80 body portion 26 and aV reduced threaded upper end 27 engaged in the internally threaded collar 28 at the bottom of the packer 11.

A plurality of vertically extending and equally spaced valve chambers 29 are provid- 85 ed in the enlarged body portion 26 of the nipple 25 and fitted with ball check valves 30, the chambers having ports 31 extending inwardly from the ports below the tops thereof, and reduced ports'31 in the bottoms 90 thereof for admitting gas under pressure from the lower part of the well through the chambers and ports into the pump barrel chamber 32 when pressure in the well eX- ceeds that in the pump barrel and to stop How of gas from the pump barrel back to the well.

rlhe paclrer 11 comprises the usual cylindrical body 33 having an annular groove 34 carrying a packing ring 35 of rubber or other resilient packing material which sealingly engages the walls of the well casing and serves to divide the well into upper and lower sealed portions.

Extending vertically and centrally through the packer is an opening 36 for receiving the piunger rod 23 for free reciprocating movement therein, and mounted in an enlarged threaded portion at the upper end of the packer is a packing gland 37 'sealingly engaging the plunger in its working relation with the packer for preventing leakage of fluid from the upper well portion into the pump chamber 32. Y

A plurality ot' equally spaced ducts 38 are provided in the body 33 of the packer and extend upwardly from the bottom of the body for communication with ports 39 in the packing gland 37, ball check valves 38 being provided at vthe lower endsof the ducts for Controlling the iow of the gas pressure into the upper well portion.

Threadedly engaged in the ports 39 of the packing gland 37 are nipples 40 fitted with A caps 41 and provided with side outlet openings 42 through which the gas pressure is admitted to the upper well portion, the closed ends serving to prevent the precipitating sand orsediment from the Huid from entering and clogging the ducts 33 and ports 39.Y

Mounted yin the Vupper and internally threaded opening of the packer body 33 is a' reducer collar 43 hreadedly engaged by' the liner 12 which supports the air motor 13, the liner being provided with ports 44 to permit the passage of gas pressure and Huid therefrominto the surrounding upper well portion.Y Y

In order to ei'e'ct reciprocation of the hollow pump plunger 23, 1 prefer to employ an air motor oi the reciprocating type and to connect the end ofv the motor piston rod 45 with vthe upper end of the plunger rod by means of a threaded coupling 46 (Fig. 3). In order to permit the fluid to pass from the Y hollow plunger kinto the liner 121 Vprovide check valve 22 in the 1 hoilow plunger apertures 47 in the walls of the plunger, so positioned as to remainropen to the liner 12 throughout the Vtravel ot the plunger.

In practicing' the method with the apcasing, the packer 11 in its sealed relation with the casing serving as a bottom for the upper well portion to support the column of fluid as itis built up therein and finally fills the casing and flows ofl from the top of the well through suitable How lines (not shown) Gas pressure accumulating in the lower portion of' the well is'free to escape into the upper well portion above the packer trough the'valved ports when its natural pressure is sufficient to overcome the hydrostatic pressure of' the column of iluid contained in the upper well portion, or when it is sullicientn ly compressed in the pump barrel 19 during the upstroke of the piston 20 to overcome the resisting duid pressure.

`i/Vhat I claim vand desire to secure by Letters Patent is: y

1. 1n combination with Well Casing, a packer in the casing, a liner rising from the packer, and having ports opening to the case ing, a motor on the liner, a pump barrel located' beneath the packer, a valved plunger in said barrel, and a hollowV rod connecting the motor with the plungerand havingl ports ropening to the liner. y

2.111 combination with well casing, a

packer in said casing having valved ducts providing communication between the upper and lower portions of the casing, apump barrel beiow and in sealed relation with the packer having valved ports providing communication betweenV the barrel and the well, a iiner above the packer having ports o ening to the. casing, a plunger in the pump ban rel, a hollow pump rod extending through tle packer, connected with 'the' pumpv plunger andk having ports opening to the liner, a valve in the plunger controlling iiow from the pump barrel to the hollow rod, and means for reciprocating said rod.

1n testimony whereof I affix my signature.V

IRWIN B. WINSOR.

paratus disclosed, air pressure is admit-ted to the air motor 13 through the conduit 14 for setting the motor in operation.

Reciprocating movement imparted to the 23 of the pump 9 causes the iuid to be drawn into the pump Vbarrel 19 through the standing orcheck valve 18 during the Iupstroke of the pump piston 2O.V On the succeeding down stroke of the piston 20, the fluid trapped in the barrel 19 opens the piston and passes upward through the plunger and through the plunger openings 47 into the liner 12. The iuid passes from 44 into the upper well portion defined by the the liner through the ports

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