US1812667A - Deep well pump - Google Patents

Description

June 30, 1931. J SHUTT 1,812,667

DEEP WELL PUMP Filed April 19. 1950' a I 27 z" l,

[WI/67V]??? fa/VA A. die 0r? Patented June 30, 1931 PATENT ,or cs.

" JOHN E. SHUTT, OF STUTTGABT, ARKANSAS DEEP WELL; rum

Application ifled 1 m 19, 1930. Serial No. 445,577.

This invention relates to pumps and more particularly to deep well pumps.

especial relation-to an auxiliary or sand valve for use in connection with the traveling and 5 standing valves of the usual-pumps.

. In deep well pumps of'the ordinary types a well casing extends downward from the surface of the earth adjacent to the bottom of the well. This casing carries at or near its 1 lower end a pump barrel, in which a traveling valve or plunger is slidab-l. disposed. This plunger which includes a c eck valve is car-. ried on the lower end of a pump rod which extends upward toithe surface of the ground and by which it is reciprocated. Disposed below this plunger or. traveling valve is a check valve or standing valve. On the upward stroke of the traveling valve, oil or water is drawn ast the standing valve into the lower end of the casing. On the subsequent downward stroke this liquid passes the check valve therein and is subsequently raised while at the same time an additional supply of liquid is .drawn as before into the casing.

Repetition of the cycle eventually raises the liquid to the surface and discharges it.

Lt often happens however especially in oil wells that a very considerable volume of gas accompanies the oil and in such case this gas 0 is trapped between the standing valve and the traveling valve and simply expands and contracts with the stroke. The gas fails in such cycle to pass the check valve of the travelin valve on its downward stroke because of tlie weight of the-column of oil superposed thereabove.

Even though gas does not accumulate in the working barrel the hammer action of the downwardly moving column of oil above the K40 travelingvalve, this column often being as much as 5,000 feet in height, is so severe as to often burst the casing.

The objects of the present invention are (a) To provide a valve arranged above the traveling valve to support the weight of the superposed column and thereby relieve the traveling valve on its downward stroke ofsuch weight while permitting read passage of oil and gases therethrough uring the upward stroke;

It has (b) To provide in such a valve a stufiing box through which the pump rod maybe reciprocated; (0) To provide means for preventing sand from returning to the working barrel and 010 ging it;

' a To generally improve the design and construction of such a valve.

The means by which the foregoing and other objects are accomplished and the manner of their'accomplishment will readily be understood from-the following specification on reference to the accompanying drawings, in which:

Fig. 1 is a sectional elevation onthe center 65 line showing the working barrel and parts associated therewith.

Fig. 2 is a fragmentarysectional elevation on the same scale showing the movable parts of the sand valve in elevation.

Fig. '3 is a sectional plan view taken on the line II-III of Fig. 1.

Referring now to the drawings in which the various parts are indicated by numerals,

10 is the lower end of the pump'casing, within'which a pump rod 11 extends downward from the surface of the ground, the rod being'operated in any usual or desired manner.

. Secured to and depending below the casing 10 is a pipe coupling 12 into the lower end of which the pump barrel 13 is screwed, this coupling being hereinafter designated as the sand valve cou ling screwed into and supported by the ower end of the barrel is a second coupling 14 hereinafter designated as the standing valve coupling.

The standing valve coupling 1 1 has'an integral annular boss 15 therewithin. This boss is conically bored to form a seat to receive the correspondingly tapered lowered end of a standing valve 16, which valve may be a usual ball check valve.

Disposed within the barrel 13 is a traveling valve or plunger 17, which plunger is provided with a ball check 18 and carries cup leathers 19 contacting with the wall of the barrel. At its upper end the plunger is secured to the lower end of the pump rod 11, in any usual or desired manner.

Disposed around and slidably mounted on the piston rod 11 is a sand valve 20 the up er end of which is hollowed out to form a stu ng box to receive packing 21, this packing being held in lace by a gland 22, which in turn 'is secured y a bonnet 23. The upper portion of this bonnet is hollowed out to receive a cup leather 24 which is held in place by a retaining rin 25. The lower end of the sand valve 21 is a apted to form a closure with an annular seat 26 carried by the sand valve coupling 12. Preferably this seat is formed in tube, whereby vertical passage of liquid upward through the thimble will tend to rotate the valve. The lower ends of these vanes extend laterally beyond the bodies thereof, so that these ends 32 underlie the thimble 27 and limit the travel of the valve. They are also available to remove the thimble 27 from its seat when-the pump rod is removed.

As the plunger rises, the liquid is drawn upward into the standing valve coupling 14 and on succeeding strokes passes the ball check 8 and is then further raised past the sand check valve 20. Continued operation of course forces the liquid to and discharges it above the surface of the ground, but during such operation return flow and the consequent thrust of such return flow is prevented by the sand check valve and the plunger check is relieved of pressure during its downward stroke.

Gas which is drawn in with the oil through the standing valve is able to raise the ball valve 18 and passes above the plunger. Owing to the fact that the stroke of the traveling valve is very much greater than the space between the lower end of the traveling valve and the upper end of the standing valve, and to the further fact that gas is ordinarily only a small part of each charge, all the gas passes above the traveling valve and is eventually forced outward through the sand valve after which it is free to pass upward to the surface of the ground.

During the passage of the liquid through the sand valve the angularity of the blades causes the valve to rotate, exerting grinding action on the seat.

At any time should the condition arise that it is desired to remove the traveling valve from the well the pump rod is raised until the lugs 32 at the bottom of the vanes engage the thimble 27 and such movement being continued the thimble is dislodged from its seat and thereafter by movement removed from the well, thus permitting the plunger and standing valve 16 to be removed.

It is to be understood that the form of my invention herewith shown and described is to be taken as a preferred example of the same and that various changes inshape and size and arrangement of parts may be resorted to without departing from the spirit of the invention or the scope of the subjoined claims.

Having described my invention, what I claim is 1. In a pump, which includes a casing, a pump rod, a pump barrel, a traveling valve therewithin secured to said rod, an annular tapered seat formed within said casing, and above said traveling valve, an annular thimble correspondingly tapered, seated therewithin, a sand valve slidably mounted on said rod, disposed above and seating on said thimble, a tubular sleeve slidably disposed around said rod, secured to and depending from said sand valve and below said thimble, and a plurality of blades integral with said sleeve and radiating therefrom, said blades having projecting lugs adapted to engage the bottom of said thimble and limit the upward movement of the valve.

2. In a pump, which includes a casing, a

pump rod, a pump barrel, a traveling valve therewithin secured to said rod, an annular tapered seat formed within said casing, and above said traveling valve, an annular thimble correspondingly tapered, seated therewithin, a sand valve slidably mounted on said rod, disposed above and seating on said thimble, a tubular sleeve slidably disposed around said rod, secured to and depending below said sand valve, and a plurality of blades integral with said sleeve, radiating therefrom, into proximity with said thimble, and angularly disposed with regard to the axis of said rod, whereby channelways angularly disposed with relation to the flow of liquid therethrough, are established.

In testimony whereof I hereunto afiix my signature.

JOHN E. SHUTT.

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