US2026465A

US2026465A - Oil well pump

Info

Publication number: US2026465A
Application number: US703118A
Authority: US
Inventors: Douglas G Gall
Original assignee: Individual
Current assignee: Individual
Priority date: 1933-12-19
Filing date: 1933-12-19
Publication date: 1935-12-31
Anticipated expiration: 1952-12-31

Description

Dec. 31, 1935. D. s. GALL OIL WELL PUMP Filed Dec. 19, 1955 2 Sheets-Sheet l awe/who'll U A. W Q 2* 1 u G I p 4 J 5 2 5 X Z w 2 z z Z L x w W W W \n\ W M\ W 7 E /is MM 9 Z Z Z W M W L QM M l m D. G. GALL OIL WELL PUMP Filed Dec. 19, 1933 2 Sheets-Sheet 2 Patented Dec. 31, 1935 UNITED STATES PA l E'NT oF-FI- Application December 19,1933, Serial No. 703,118

2 Claims.

This invention relates to well apparatus and pertains particularly to an improved form of pump.

The primary object of the present invention is to provide an improved pump structure which is designed primarily for use in oil wells, which is so designed that the entrance of sand or other granular matter between the relatively moving parts thereof is positively prevented, thereby insuring longer working life for the parts than is had in pumps of the type at present in use.

Another object of the invention is to provide a pump in which the fluid pressure is applied to the bottom of a traveling barrel so that the fluid en- 5 ters the barrel when the latter is lowered and is trapped and lifted thereby when it is raised.

Still another object of the invention is to provide an improved well pump wherein there is employed a stationary plunger and a moving plunger which encircles and works on the stationary plunger and which receives fluid from the well in its lower end, whereby the introduction of sand or other gritty matter in between the working parts is avoided.

- 5 A still further object of the invention is to provide a well pump wherein novel means employed in association with the pumping, unit proper whereby the bottom or stand valve of the well may be engaged and removed with the pumping ap- 30 paratus.

The invention will be best understood from a consideration of the following detailed description taken in connection with the accompanying drawings forming part of this specification with the understanding, however, that the invention is not confined to any strict conformity with the showing of the drawings but may be changed or modified so long as such changes or modifications mark no material departure from the salient fea- 40 tures of the invention, as expressed in the appended claims.

In the drawings, the pump and well casing in which it is shown is illustrated in longitudinal section and has been divided transversely into 45 four sections for convenience in making clear the relation of the several parts and;

Figure 1 represents the longitudinal section of the upper portion of the structure showing its conection with the well liner.

50 Figure 1 is a longitudinal section through the portion immediately adjoining the part I.

Figure 1 is the longitudinal section through the portion immediately adjoining the part I Figure 1 is the longitudinal section through 55 the portion immediately adjoining the portion l and showing the lower terminal portion of the pump.

Figure 2 is a sectional view taken on the line 22 of Figure 1.

Figure 3 is a sectional view taken on the line 33 of Figure 1 Referring to the drawings wherein like numerals or reference indicate corresponding parts throughout the several views, the numeral I indicates the lower end portion of the well tubing 0 to which is joined, in the manner hereinafter described, the pump jacket 2.

At the lower end of the jacket 2, there is secured by means of the jacket collar 3, the standing valve barrel or seat i into the upper end of which fits the reduced lower end portion 5 of a standing valve which is indicated as a whole by the numeral 6 This valve 6 has secured to the top of the ball gauge, the upwardly extending pin l which is disposed on the longitudinal center of the jacket 2 and which has a head 8.

At the upper end of the jacket 2 is a coupling 9 which has the central interior flange ii] and with the upper part of which is threadably con- 25 ected the collar I I in which is located a sealing unit, hereinafter more fully described. The upper end of this collar II is connected with the lower end of the well tubing I by means of the coupling I2. The collar I2 also has an interior flange I3 which is similar to the flange Id of the coupling 9 and against which the lower end of the tubing abuts.

The collar I I has fitted therein the lining sleeve I4 and secured in this lining sleeve is a selling head unit which is indicated as a whole-by the numeral 95. This unit 55 comprises a tubular center portion I6 which is exteriorly threaded at its lower end and has the lateral head flange H at its upper end, which flange is designed to be 40 located within the central part of the coupling i2.

Surroundingthe tubular portion I6 of the sealing head unit are sealing rings indicated generally by the numeral I8, which engage the interior of the sleeve I4 to close the same. These sealing rings are secured in place by the locking collar I9 which threads on the lower end of the body It, and there is also threaded onto the lower end of this body the coupling 20 which secures thereto the upper end of. a fixed barrel 2| which is held stationary in the jacket.

Slidable over the stationary barrel 2| is the barrel 22, the inner surface of which is lined by the sleeve sections 23. The upper end of the barrel 22 is closed by the nut 24 and this also secures the sleeves 23 in place. The lower one of the sleeves 23 rests upon the upper end of an intermediate barrel 25 which is thickened at its upper end, as illustrated in Figure 1 at 26, and has the reduced upper end portion which positions in the barrel 2? and provides the flange against which the lower liner sleeve 23 engages.

The lower end of the intermediate barrel 25 is threadably connected with the short tubular body 21 which will be referred to as an adapter. This adapter has a central post 28 extending from its upper end and the portion by which this post is connected with the adapter proper is provided with apertures 29 by means of which fluid can pass from beneath the adapter up into the moving barrel. The upper end of the post 28 of the adapter is drilled and tapped to receive the threaded lower end of the sucker rod 29' which passes upwardly through the barrel and the stationary plunger to the top of the well.

The adapter 2? secures to the lower end of the barrel the shell or nipple 38 to the lower end of which is threadably secured the ball valve unit 3|. This unit has coupled therewith below the valve the body 32, which forms a part of a unit which is commercially available and is known as the Reed standing valve puller. This member cooperates with the pin and head 7-8 of the standing valve, which is also a part of the unit referred to, so that the valve may be lifted from position and drawn out of the well with the pumping apparatus, when desired. Aside from the part which the standing valve plays in the combination, this structure and the pulling means therefor forms no part of the present invention.

In setting the pumping apparatus in the pumping jacket, the apparatus is lowered through the tubing into the'jacket on the lower end of the sucker rod 29 and the sealing head unit I is forced into the sleeve of the collar I I by means of the sealing head seater 32. This is in the form of a collar which surrounds and is secured to the sucker rod above the unit l5 and when the coupling 20 of the unit starts into the lining sleeve It, the rod 29 with the traveling barrel and nipple is dropped so that this collar will exert a force upon the unit and drive the same into the receiving sleeve. It will be apparent from a consideration of the drawings that, after the head unit has been forced into place in the manner described, upon reciprocation of the sucker rod, the traveling barrel will, upon its down stroke, displace the fluid which will be standing in the lower part of the casing 2, forcing the same up past the valve unit 31 into the traveling barrel, and a continuous repetition of this operation will effect the forcing of the fluid up through the traveling barrel and through the overlying pipe casing I to the surface. Any sand or grit which may have worked its way up around the outside of the stationary barrel 2| will be wiped off by the collar 24 as it moves upwardly on the barrel and by this means, the life of the pump will be considerably greater than other types of pumps as the sand and grit will be prevented from get- 5 ting in between the contacting surfaces of the moving parts.

It will also be readily apparent that the pump may be readily removed from the well and another new pump of the same design inserted or the 10 same pump may be repaired and then re-inserted or replaced and run to the bottom of the tubing in the same well.

I claim:-

1. In a pump structure, a casing having an inlet valve at its lower end, a unit forming a part of said casing at a substantial distance above the lower end of the latter and comprising a collar and a pair of couplings and a lining sleeve within the collar and secured between the couplings, a portion of the upper end of the lining sleeve being unengaged by the adjacent coupling to form a shoulder, a centrally apertured sealing unit comprising a tube having a lateral collar at its upper end and a series of washers surrounding the tube, said sealing unit being disposed in the lining sleeve and said collar resting upon said shoulder, a fixed barrel secured at one end to the lower end of said sealing unit and depending therefrom in the casing, a sliding barrel snugly receiving said fixed barrel, a sucker rod extending downwardly through the sealing unit and through the fixed barrel and secured at its lower end to the sliding barrel, and a valve in the lower end of the sliding barrel.

2. A pump structure, comprising a casing having an inlet valve at its lower end, a fixed barrel disposed in the casing and secured at its upper end to the casing, a sucker rod extending downwardly through the fixed barrel, an intermediate a barrel surrounding the lower end of the sucker rod and having the latter coupled therewith, said intermediate barrel being interiorly thickened at its upper end and having the upper terminal portion exteriorly reduced in diameter and exteriorly threaded, a sliding barrel having said fixed barrel extending thereinto and threadably attached at its lower end to the reduced portion of the intermediate barrel, the said reduced portion of the intermediate barrel forming a shoulder within the lower end of the sliding barrel, a lining sleeve within the sliding barrel resting upon said shoulder, a nut secured to the upper end of the sliding barrel and having a portion extending thereinto and engaging and maintaining the liner in position, and a valve coupled with the intermediate barrel and controlling the flow of fluid thereto.

DOUGLAS G. GALL.