US1487431A - Oil-well pump - Google Patents

Description

T. J. BARGER March 18 1924.

OIL WELL PUMP Filed Dec. 5. 1922 Patented Mar. lid, 122d.

p dt T l T032 ll. BARGER, OF GILT ON, OKLOMA.

OIL-WELL PUMP.

Application filed December 5, 1922. Serial 1%.605955.

To all whom it may concern:

Be it known that I, Tom J. BARonu, a citizen of the United States, residing at Oilton, in the county of Greek and State of Oklahoma, have invented certain new and useful Improvements in Oil-Well Pumps, of which the following is a specification.

This invention relates to pumps provided with sand traps and. chiefi used in connection with oil wells; an it consists in the novel construction and combination of the parts hereinafter fully described and claimed whereby the sand is guided into the sand trap and prevented from passing backwardly into the pump barrel.

In the drawings, igure 1 is a vertical section through a pump provided with a sand trapand a sand ide according to this invention. Fi 2 1s a sectional plan view, taken on the line 2-2 in Fig. 1. Fig. 3 is a vertical section through the guide 13 and stem 13 showing a preferred modification in the form of the passage 21.

The pump barrel 4 is secured at its lower end to a coupling sleeve 5, andthe lower end of the sand trap 6 is also secured to this sleeve so that it encircles the pump barrel. The sand trap is a long cylindrical vessel, and the sleeve 5 forms the bottom of it. The suction pipe '5 is also secured to the sleeve 5, and is provided with a foot valve in the usual manner. The plunger 8 works in the pump barrel 4, and is of any approved construction. The delivery valve 9 is inclosed in a cage 10 which is secured to the upper end of the plunger. The pump rod 12 is secured to the upper end of the cage 10. v

The upper end portion of the pump barrel 4 is retained centrally and steadied within the sand trap h distance pieces 1% which do not materially obstruct the sand trap, and the upper end of the sand tra is connected to the delivery ipe 15 of t e pump by a conical coupling s eeve 16. The pump rod 12 slides in a guide 13 supported at the tog pf the (pump barrel.

e gui e has outlet passages 19 which deliver upwardly, and it is preferably a little larger in diameter than the pump barrel so that it rests on the upper end of it. Suitable packing devices 20 are secured to the .uide 13, and are slidable within the pump arrel so that the Y may be removed and replaced. These pac ing devices and the pump plunger are preferably provided with suction cups such as used on pump plungers of approved construction. The packing devices have a longitudinal outlet 21, and a cage 22 is secured to their lower end. In the preferred form of the device shown in Fig 3, a single passage 21 for the oil is provided in the stem 13' of the guide 13, which passa communicates with the passages 19 of t e guide. The packing devices are secured on the stem 13 by the cage 22 which is screwed on the lower end portion of the stem, or secured to it in any other approved way. A single passage 21 for the 011 is preferred as it gives a free outlet.

The oil or other fluid together with the sand passes upwardly through the cage 22, outlet 21 and passages 19 at-each upstroke of the plunger. In order to revent the sand from passing backwardl y into the pump barrel during the downstroke of the plunger, aconical cap or deflector 24 is arranged on the pump rod 12 above the passages 19 in the guide. .This cap has an upper surface which projects downwardly and outwardly, and does not close the passages 19 and does not prevent oil from pass in downwardly into the barrel.

he sand which is discharged with the oil strikes the inclined underside of the ca at the upstroke of the plunger, and muc of it is deflected into the sand trap. The sand which is drawn up into the delivery pipe. descends upon the inclined top of the cap during the downstroke of the plunger, and slides 05 the cap into the sand trap. The cap or deflector '24 is slidablo on the pump rod, and is made of predetermined size and weight so that it will rise to 9. limited extent within the conical coupling sleeve 16 without closing the delivery pipe, the resistance being increased by ;.the conical form of the cou lin as the cap rises to let the oil flow free y t rough. the passages 19.

Vl hat I claim is:

1. The combination, with'a ump plunger and free to rise wit the li uid at eac upstroke and operating to gui the sand into the sand trap at each downstnolne.

2. The combination, with a pump barrel, a sand trap encircling the pump barrel, a delivery pipe secured to the upper end of the sand trap, and a pump plunger provided with a pump rod; of a guide for the pump rod which rests on the top of the pump barrel and which has packing devices at its lowerpart which are slid into the pump barrel, said guide havin a discharge outlet at its top, anda conica cap or sand deflector mounted on the pump rod above the said discharge outlet and operating to guide the sand 1nt0 the sand trap.

. 3. The combinat-iomwith a pump plunger provided with a pump rod, and a pump barrel provided with a guide at its upper part in which the pump rod is slidable; of I a sand trap secured around the pump barrel, a conical coupling sleeve secured to the said sand trap and encircling the upper part of the said guide, a, delivery pipe secured to the smaller end portion of the coupling sleeve, and a sand deflector arranged in the said coupling sleeve,.said sand deflector being rovided with a conical upper surface and 'aving a hole in which the pump rod is slidable, said sand deflector bein normally supported by the said guide an operating to deflect the sand outwardly into the sand tra n testimony whereof I have afiixed my signature.

TOM J. BARGER

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