US1612733A - Pump - Google Patents

Description

Dec. 28 1926.

J. R. KlRLEY PUMP I Original Filed Nov. 22,- 1922 FIG. 2 Fl 2 Sheets-Sheet 1 FIG. 5

Dec. 28, 1926.

- J. R. KIRLEY PUMP ' Original Filed Nov. 22, 1922 2 Sheets-Sheet 2 FIG. 10

Patented Dec. 28, 1926.

JOHN R. KIRL'EY, OF WASHINGTON, PENNSYLVANIA.

PATENT OFFICE.

PUMP.

'Application filed November 22, 1922, Serial No. 602,561. Renewed .Tune 8, 1926.

My invention relates to pumps, and more especially to deep-well pumps such as employed in the pumping of oil.

The object of my invention is to provide a pump which may be drawn from the well at great depths without raising the column of fluid resting on the pump which oflers such resistance to the upward movement of the pump and pumping barrel that great power is required for the drawing operation, and at the same time the connection with the pump is liable to be broken, leaving the pump sticking in the well, or in the drawing of the pump the cups and other parts are so torn as to be of no further use.

The object of my invention is to provide a pump which may be drawn without the difliculties above referred to, and this is accomplished by equalizing the pressure in such a way that the pump can be drawn to the top of the well without having to lift the column of fluid above the same.

In'the accompanying drawing, Fig. 1 is a longitudinal section of the casing showing my improved pump therein in position for pumping; Fig. 2 is a like view showing the first step in the operation of drawing the pump; Fig. 3 shows the final operation in which the valve has been lifted from the standing or working-valve and the pump is being lifted from the well; Fig. 4 is a View of the pumping-piston; and Fig. 5 is a view of the valve at the lower end of the workingbarrel; Figs. 6, 7, 8, 9 and are views corresponding to Figs. 1 to 5 of a modified form of pump.

In the drawings the numeral 2 designates the tubing at the lower end of which is secured the ordinary standing-valve 3. The tubing is connected by the coupling 4 to the ordinary perforated pipe 5 at the bot-tom of the well.

The rod 6 passes down through the anchor 7 which is located in the casing 2, said rod being free to move up and down in said an chor. The anchor 7 has the head 7 with the openings 7* below said head. Below said openings 7 b is the extension which carries the cups 7 engaging the wall of the tubing and on which the fluid rests to keep said anchor anchored in position. The uppermost cups are close to the openings 7 so that there is no chance ofthe sand c0llect-. ing on said cups due to the fact that the passage of the fluid through said openings keeps the fluid stirred up and there is no chance for it to settle.

Connected to the lower end of said rod is the ordinary pumping-piston 8 comprising the tubular portion 9 with the cups 10 on the outside thereof held in place in the ordinary manner, said pumping-piston having the perforations 11 at the lower end thereof for the admission of the fluid to the tubular p013 tion 9, and at the upper end of said tubular portion 9 is the ball-valve 12 resting onthe seat 13 and contained within the cage14 which has the outlets 15 which permit the fluid to pass out into the tubing 2.

A second barrel of smaller diameter than the barrel 16 is screwed into the lower end of the said barrel 16, and under ordinary working conditions the pumping-piston 8 moves up and down in the barrel 20 during the pumping operation.

Below the pumping-piston in the barrel 20 is the valve 21 which consists of the tubular member 22 with the cups 23 surrounding said tube, said tube being provided with the perforations 24:. At the upper end of said tube is the ball-valve 25 in the cage 26 provided with the openings 27 leading into the barrel 20.

At the lower end of the barrel 20 is the gland 28 which is adapted toengage the nut 29 on the tubular section 22 when said barrel is lifted, as will more fully hereinafter appear.

An aperture 30 is formed in the barrel 20 at the lower end thereof, said aperture, under normal pumping conditions being below the cups of the valve 21., and forming communications between the inside of the barrel 20 and the space Sl formed between said barrel 20 and the tubing 2.

When the pump is in operation the'pump ing-piston 8 is reciprocated up and down in the ordinary manner in the barrel 20, and

the oil entering the perforated stand-pipe 5 passes up through the standing-valve 3, the valve 21, through the pumping piston by the apertures 11, through the anchor 7, and out through the openings 7 at the upper end of said anchor into the tubing, and thence to the top of the well.

When it is desired to draw the pump, the rod 6 is raised and the pump is drawn up from the barrel 20 into the barrel 16, as shown in Fig. 2, and as the barrel 16 is of larger diameter than the pumping-piston the fluid passes around said pumping-piston and down into the barrel 20 on to the valve 21, and said valve 21 is held down in engagement with the standing-valve 3, the barrel 20 having been moved up over the tubular portion 22 of the valve 21, as shown in Fig. 2. This brings the opening 30 above the cups 23 of the valve 21, so that the fluid contained within the barrel 20 is permitted to escape into the tubing 2 and in this way the pressure is so equalized that the further pulling of the pump can be accomplished without difficulty, due to the equalization of pressures. The lifting of the pumping-piston into the enlarged barrel 16 permits the fluid to pass down and rest on the valve 21 and hold said valve down until the working barrel.20 is raised to the position shown in Fig. 2, whereupon the said valve 21 is unloaded and thepressure is equalized so that the pump can be pulled out of the well without'having to lift the column of fluid above the same.

In Figs. 6, 7, etc., I have illustrated a modified form of my invention. The tubing 2 is connected at its lower end by a threaded connection to the barrel 36 of smaller diameter than said tubing. A collar 37 at the lower end of said barrel 36 connects said barrel to the perforated standing-pipe 38. The ordinary standing-valve 3 is provided.

A head 39 has the pumpbarrel 40 connected thereto, and in said pun' p-barrel is the pumping-piston ll which is connected by the rod l2 passing up through the head 39 to the cable or sucker rods used in pumping. The head 3i) has the openings 39 for the passage of the fluid.

Apertures -13 are formed in the pumpingbarrel 40 at a point above the ordinary stroke of the pimping-piston 4L1, said apertures forming communication between said pumping-barrel and the tubing 2.

The lower end of the pumping-barrel. 4O connected to the anchor 4-4 which, during the pumping operation, its closely in the upper end of the barrel 36. A valve has the stem 46 which passes down through the anchor a l, the lower end of said stem resting on th-e projection 47 of the standingvalve 3. The pumping-barrel 40 and the anchor at connected thereto have a certain upward movement independentof the movement of the valve 45, due to the fact that said anchor 44 can move up the stem at.

The valve 45 has the ordinary cups l8 and the ball and cage 49.

lVhen it is desired to draw the pump the pumping-piston 41 is pulled upwardly in the pumping-barrel to until said pumpingpiston gets to the point above the aperture 43, whereupon the fluid entering said aperture rests upon the valve i5 and holds said valve in place so that upon a further upward movement of the pumping-piston which comes in contact with the head 39 the pumping barrel 40 is lifted and draws up with it the anchor at sliding over the stem 46 of the valve 45 and drawing said anchor out of the barrel 36. As soon as the anchor leaves the barrel 36 the 'fluid from the tubing 2 can pass into said barrel 36, and pressure on the valve L5 is equalized, and said valve unloaded so that upon a further pulling action :the valve is lifted with. the barrel a0 and the whole pump can be readily drawn to the top of the well without having to overcome the weight of the column of fluid in the well.

What I claim is:

1. The combination with the tubing, of a pumping-barrel therein, a pumping-piston in said barrel, a valve in said barrel below said pumping-piston, means operated by the upward pull of the pumping-piston to admit flu-id'to the upper end of said valve, and means for relieving the pressure of said fluid on said valve and equalizing the same by the further upward movement of the pump.

2. The combination with the tubing, of a pumping-barrel therein, a pumping-piston in said barrel, a second barrel of larger diameter above said first barrel, an anchor in said tubing, a valve in said first barrel below said pumping-piston, a standing-valve on which said first valve rests, said first barrel having a sliding movement on said first valve, and said second barrel having an opening for admitting fluid to the upper end'of said first valve, and means on said second barrel adapted to engage said second valve to lift the same. Y

3. The combination with the tubing, of a pumping-barrel therein, a pumping-piston in said barrel, a stem connected to said pumping-piston, an anchor in said tubing through which said stem passes, a barrel of larger diameter than said first barrel. connected to said anchor and to said first barrel, a valve in said first barrel having packing enga the walls of said barrel, a standingalve on which said valve rests, an opening formed in said first barrel communicating with the tubing normally at a point below said pacl ing, said first barrel having sliding movement on said valve, and means on said first barrel for engaging said second valve to lift the same.-

4. The combination with apump tube, of a pumping barrel therein, a pumping piston in said barrel, a valve in said barrel below said piston, means for admitting fluid from a point above said valve to the upper side when the piston has been elevated a given distance, and means for admitting a portion of said fluid to the underside of said valve for equalizing the pressures on opposite sides of said valve. 10

In testimony whereof I, the said JOHN R. KIRLEY, have hereunto set my hand.

JOHN R. KIRLEY.

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