US1049719A - Standing-valve construction for well-pumps. - Google Patents

Description

A. HUNTER. STANDING VALVE CONSTRUCTION FOR WELL PUMPS.

APPLICATION FILED MAY 25. 1912.

1,049,71 9.- Patented Jan.7, 1913.

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UNITED"STATEBBPATENT OFFICE. I

ALVA HUNTER, OF BAKERSFIELD, CALIFORNIA, ASSIGNOR B. BOBB, or Los 'ANGELES, CALIFORNIA.

STANDING-VALVE CONSTRUCTION non WELL-PUMPS.

Specification of Letters Patent.

Patented Jana, 1913.

Application filed May 25, 1912. Serial no. 699,653.

To all whom it may concern:

. the same, and from which any small amount i provide a a valve mechanism.

of sand that may accumulate, may be re moved without withdrawing the valve mech anism entirely out of the well.

,A further object of my invention is to valve mechanism that j maybe utilized efficiently in oil wells in which there is a heavy gas pressure.

I accomplish these objects by means of the device described herein and illustrated in the drawings in which:

Figure 1 is a central-vertical section of a pump barrel mounted. in a well casing, illustrating my improved valve mechanism. Fig. 2 is an enlarged detail elevation of the Fig. 3 is a transverse 3-3 of Fig. 1; Fig. 4 section taken on Fig. 5 is a detail for limiting the section taken on line is an enlarged transverse the line 44: of Fig. 1.

perspective view of a nut upper movement of the valve stopper. 35

Referring more particularly to the drawing 5 designates an oilv well casing of usual form which extends from the top of the ground to the bottom of the well, 6 a pump barrel in which is reciprocatingly mounted a hollow suction plunger 7 The lower end of the pump barrel .is exteriorlythreaded and engages an annular interiorly threaded recess 8 formed 'inthe upper end of a casing 9 in which the valve mechanisms are mounted. The pump barrel G and casing 9 are stationary, being suspended from the top of the well in any well known manner.

Suction plunger 7 is provided in the upper end thereof with a valve 10 and a cage 11 therefor, the cage being in threaded engagement therewith. By inserting a washer into the end of the suction plunger, the annular edge 13 will serve as a stop for the wings of a spider 14 rigidly mounted on the upper end of a connecting rod 15, as clearly indicated 'in'Fig. 1 of the drawing- Mountor ONE-HALF T0 WILLIAM ed in the centrally disposed bore or recess 16 of the casing 9 is a standing valve mechanism 17, which preferably consists of a hollow cylindrical member 18, the lower end beingsub-c'onical as at 19. This end seats inthe' sub-conical end of the central bore 16, as clearly shown in Fig. 1 ofthe drawing.

The outside diameterof bore 18' is of less diameter than the upper end of. the conical bore 19 and is exteriorly threaded as at 20 for the receptioniof a sleeve21 exteriorly threaded on its lower end. Theupper end of this sleeve'presents an annular shoulder 22 that engages an annular rib 2 1 formed on a hollow valve seat 25. By seating valve which is in screw-threaded engagement with said member, it will be observed that the annular shoulder 23 will be forced into positive engagement with the rib24 of seat 25 and hold the same in rigid engagement with the standing valve 16. v

The lower endf connecting rod 15 is screw threaded from its lower end upwardly, and screw threaded engagement therewith is a ball valve 26 which is adapted to seat on the valve seat 25 during the operation of the pumping mechanism. The

connecting rod 15 extends below the standing valve mechanism 17 and on the lower end thereof is a limiting nut 27 which is adapted to limit the upward movement of the connecting rod 15 when oil is passing through the standing valve 17, during the operation adjusting the nut 27 upwardly or downwardly on rod 15 it will be apparent that the movement of the rod may be automatically adjusted. 1 l

The lower end of easing 9 is provided with a recess 28 preferably semi-spherical in configuration, the upper end of saidrecess connecting with the centrally disposed recess 16. The lower end of said casing 9 is provided with two vertically extending bores '29 and 30 which from the base of casing 9 terminating in recess 28. In these bores 29 and 30, are disposed valve mechanisms, preferably consisting of hollow cylindrical members 31, 32 which are in screw threaded engagement withthe bores 29 and 30. The lower endof members 31 and 32 are'provided with bearof the pumping mechanism. By

extend upwardly seat 25 on the upper end of member 18 p ings 33 mounted in the center thereof and connected by spider arms 34 with the inner surface of members 31 and 32, the arms permitting a free and unrestricted flow of oil from the well upwardly into the valve mechanisms.

Interposed between the members 31 and 32 and the upper ends of bores 29 and 30 which terminate in annular shoulders 35, are valve seats 36 which are similar in configuration to the valve seat 25 which is attached to the standing valve heretofore described. Mounted in bearings 33 are vertically disposed valve stems 37 to the upper ends of which are secured valve stoppers 38, the balls seating onthe seats 36 as clearly shown in Fig. 1 of the drawing. The lower ends of the valve stems are preferably,

threaded, and each are provided with adjusting nuts 39 and lock nuts 40, tension springs 41 being interposed between the nuts and the bearings 33. By means of nuts 39 and springs 41 I am enabled'to adjust the tension on ball valves 38 so as to control the pressure of gas in the well.

In numerous oil wells, the presence of gas is often noted and sometimes the pressure of the gas is so great as to cause the unseating and disarrangement of the standing valve mechanisms thereby causing said mechanisms to simply churn the oil instead of forcing it upwardlyand out of the well. By interposing spring valve mechanisms heretofore described in the lower end of casing 9, this pressure may be readily and easily controlled without preventing the upward flow of the oil therethrough, this contributing greatly to the efiiciency 'of the pumping mechanisms mounted in wells having an undue pressure of gas.

By providing a ball valve construction as illustrated at 26 without the usual cage mechanism therefor, and having it in screw threaded engagement with rod 15, all danger of sand becoming unduly lodged around the ball mechanism so as to render the mechanism inoperative is avoided. Also by employing a mechanism as above described, when it is found desirable, for any reason, to clean and free the same from a small amount of sand or other foreign matter which may happen to accumulate around the same, I simply lift the valve mechanism 17 out of itsseat, raising and lowering the same until any sand or other matter is washed away therefrom, thus savingthe expense and time of the connecting pulling the sucker rods of the well together with the plungers and standing valves connected thereto, entirely out of the well to free the same ofsand.

The operation of my device will be ap parent from the following: When the suction plunger 7 is reciprocated in the pump barrel 6 on its upper stroke, it will draw the oil from the bottom of the well upwardly through the valve mechanisms located in the end of casing 9 upwardly through the valve mechanisms 17 and force the ball away from its seat, the nut 27 limiting the upward movement of the ball. The oil will then flow upwardly into the barrel of the suction plunger and from there through ball valve 10 to the point of discharge. 7

What I claim is:

1. A well pump mechanism, a pump barrel having a suction plunger reciprocatingly mounted therein, a valve casing member secured to the lower end of said pump barrel, an adjustable ball valve mounted in the upper end of said casing, said casing being thereof with a recess therein, and an automatic spring controlled check valve mounted in and closing the lower end of said casing opening into the recess in the casing.

2. In a mechanism of the class described, a pump barrel having a reciprocating suction plunger mounted therein, a casing secured to the lower end of the pump valve, said casing being provided in the upper end thereof with a longitudinally disposed bore and having a recess therein communicating with said bore, a ball valve mechanism mounted in said central bore, a threaded rod to engage said ball, a flat nut on said rod to adjust and to limit the upward movement of the ball stopper from its valve seat, said nut engaging said bore but not interfering with the passage of fluids, and a plurality of automatic spring controlled valves mounted in the lower end of said casing, said valves communicating with the recess formed in the lower end of said casing.

In witness that I claim the foregoing I have hereunto subscribed my name this 4th day of May, 1912.

ALVA HUNTER. lVitnesses Enw. A. KELLY, H. B. DoLoH.

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