US1870137A - Pump - Google Patents

Description

Aug. 2, 1932.

l. J. PARKER PUMP Filed March 5l 1950 I 2 Sheets-Sheet l Zzgl 33 6 47 Wl w Mv WIW w fi@ m f7 X 7 f af /Z// U A d lll ,I W Z. f M A] 5/ l m d MT a W 7 2 0 Z A ,u W/o d d if HV flyweqg.

Aug. 2, 1932., l. PARKER PUMP Filed March b. 1930 2 Sheets-Sheet 2 Patented Aug. 2,l 1932 IRA JAMES PARKER, or oorrrnzvrnnn, Kansas PUMP Application led March 5, 1930. Serial No. 433,347.

This invention relates to a pump for use in oil and gas wells.

It is an object of the invention to provide a pump for use where it is necessary to handle 5 an excessive amount of fluid in order to get the best results. Many oil and gas wells are abandoned each year because no means have been available for handling the large amount of water necessary to get profitable production of oil and gas.L The present device is designed to overcome this loss.

It is a further objectto pro-vide a pump lwith two pumping units made to operate on a single string of tubing by the action ot a single string of sucker rods at the saine time andrwhich can be operated at the same, or at different levelsr as in wells where the diameter of the casing will not admit a pump of suiiicient capacity to handle the amount of fluid necessary for its successful operation as apa'ying producer.

There are a number of devices on the market which can be attached to any standard pumping rig that give an extra long stroke to any regular pump which will increase its fluid capacity. But the first cost'o such equipment is very high and in addition to this, there is considerable lost time and eX- pense incurred in making certain changes in the rig construction in order to accommodate them. It is also necessary to remove them and change the rigs back to normal condition in order to handle any other kind of work7 such as cl-eaning out, ishing tor lost material or drilling deeper. llhe present pump can be operated on a stroke of any length and will generally eliminate all pumpingtroubles by its simple installation without any changes whatever being made in the rig or other equipment.

Vith the foregoing and other objects in view which will appear as the description proceeds7 the invention resides in the combination and arrangement of parts and in the details oit construction hereinafter described and claimed, it being understood that changes in the precise embodiment oi the invention herein disclosed may be made within the i scope of what is claimed without departing 50 from the spirit o the invention.

ferred form of the invention has been shown.

n ln said drawings,

Figure 7 is a section on line 'T-"I', Figure 3.

Referring to the figures by characters of reference l and 2 designate the working barrels, the upper working barrel being of great er internal diameter than the lower barrel 2. The lower end of the working barrel l is screwed into the upper end of an enlarged coupling sleeve 3 which, in turn, is in screw threaded engagement with a collar 4 having an Vannular shoulder 5 constituting an abutment for the sleeve 3. The lower portion of thecollar 4is reduced in external diameter to form an annular rounded shoulder 6. Ports 7 extend from this shoulder 6 to the upper face of the collar and are adapted to be normally closed at their upper ends by valves 8. These valves can be in the form of balls and are preferably held in proper relation to the ports 7 by cages 9' of any preferred construction.

A connecting tube 10 is screwed into a counterbore 11 in the lower portion of collar 4 and serves to join said collar to another collar 12 similar to the collar 4t but arranged oppositelyk thereto. On the lower portion of collar 12 is mounted the upper end of an enlarged couplingsleeve 13 which is in turn engaged by the screw threaded upper end of the lower working barrel 2. The diameters ot thetube 10 are the same as the corresponding diameters of the lower working barrel 2.

ri'Chev upper enlarged coupling sleeve 3 constitutes the lower portion of the upper working barrel and serves to house thefvalves 8 which act as standing valves. Janother standing valve lav is located in the lower end portion of the barrel 2 and operates in the usual way.

Extending longitudinally within the barrels 1 and 2 is a valve tube 15 to which is connected an upper traveling valve 16 and a lower traveling valve 17. Each traveling valve includes a tubular housing 18 carrying a valve per se indicated at 19. Traveling valve 16 has a series of packing cups 2O making a tight working connection with the inner surface of the working barrel 1 in which the valve is located.

As shown in Figure 1 the lower end of the traveling valve 16 can be joined to the tube by a coupling 21 .having inlet ports 22 opening upwardly thereinto and adapted to be normally closed by valves such as balls 23.

The lower traveling valve 17 has its tubular housing open at the bottom as shown at 24 and mounted on this housing are packing cups 25 making a .tight working contact with the barrel 2. The upper end of the lower traveling valve opens into the lower end of the tubular member 15 as will be apparent by referring to Figure 3.

For the purpose of separating the working barrels so that there will be no leakagev from one to the other, a novel form of stuffing boX is located within the tubular connection l0. This stuffing box includes a sleeve 26 -in which the valve tube 15 is adapted to slide snugly. The sleeve has an annular collar V27 and its upper end, which is'screw threaded as at 28, engages the lower end .of a tubular housing 29 'which normally rests on the collar 4. A nut 30 is screwed into the upper end of the housing 29 and bears against a coiled spring 31 located in housing 29. Another coiled spring 32 is located in the lower portion of the housing and bea-rs against the end ofV the sleeve. 26. Interposed between the ' springs 31 and 32 is a compressible packing 33 'which forms a sealed connectionbetween Vhousing 29 and the valve tube 15. Housingr29 is so ,proportioned that it can be raised off ofthe oo'llar 4 and withdrawn upwardly .through the working barrell.

The lower portion of the sleeve 26 is detachably engaged by an extension sleeve 34 and between this extension sleeve 4and the collar 27 is arranged a series of cups35 forming a packing having a tight connection with the inner surface of the connectingtube 10. The lower end of the sleeve extension 34 is reduced to form an annular 4enlargement 36. This enlargement is normally' engaged by latches 37 pivotally connected to and extending downwardlyfrom collar "12. Springs 38 are carried by the latches 37 and serve to hold them normally pressed into engagement with the enlargement 36 thereby to prevent upward movement of the sleeve V26 and the parts connected thereto. `The lower ends of the latches are inclined upwardly and downwardly to constitute deflecting fingers 39.

In operation the traveling valves will move in unison and during the first upward stroke of the valves the fluid will be drawn into the working barrels 1 and 2 past the valves 14 and 8. On the downward stroke these valves are closed and the fluid passes through the traveling valves past the balls 19 and 23 into the respective barrels 2 and 1. Thus the fluid will be located where it will be carried upwardly by the respective traveling valves lon the second upward stroke, it being understood that the fluid which had passed through vthe-lower traveling valve 17 into the space thereabove in barrel 1 will be elevated by the lower traveling valve. As it cannot pass the stuffing box located between the working Vbarrels the fluid is forced to How through openings 40 in the upper portion of the housing of traveling valve 17 and thence upwardly within the valve tube 15 and past valve 19 into the tubing thereabove. Repeated reciprocations of the lower traveling valve result in finally elevating the fluid to the top of the well.

lVhile the lower traveling valve is thus operating to elevate liquid the upper traveling valve is also elevating liquid which, on the up stroke is drawn through the ports 7 into the working barrel 1 past valve 8 and, on the down stroke, will flow past the valve 23 into 'the traveling valve 16 and then upwardly past the valve 19.

By providing the intermediate stuffing box the fluid from one barrel is prevented from interfering with the flow of fluid from the other barrel, until the fluid is ready to pass through the upper traveling valve. Thus the structure is in effect a double pump operating on a single string of tubing by the action of a single string of sucker rods.

When it is desired to operate the traveling valves to lift fluid from different levels, it is merely necessary to disconnect the work- .ing barrel 2 from the coupling 13 and to interpose a length of tubing of any desired size.

For the purpose of removing the valve and the stuffing box from thel working barrels, the working barrels are pulled upwardly until the upper tapered end of the traveling valve 17 comesagainst the fingers 39. It will serve -to' spread these fingers apart and disengage the latches37 from the annular enlargement 36. Consequently the tube 15 and all parts connected thereto can be drawn upwardly from the barrels.

By providing a pump such as herein described, a large volume of fluid can be handled more profitably than where a single pump unit is used. Furthermore, should one of the parts of the pump fail to function properly, the other part will continue to deliver a portion of the fluid.

`What is claimed is:

1. A pump including an upper working barrel, a lower working barrel, a tubular connection between the barrels, standing valves at the lower ends of the respective barrels, a traveling valve in each barrel, a tubular connection between the traveling va-lves opening into the lo,wer working barrel, a valved inlet in the upper traveling valve Jfor admitting -fluid to they upper traveling valve from the upper working barrel, a stationary packing carried by and within the Connection between the barrels and forming a. sealing working Contact with the connection between the traveling valves, means within the pump Jfor fastening the stationary packing in position, and means operated by raising the lower traveling valve. above its normal upper limit of movement, for unfastening the packing to permit upward withdrawal of the packing and the traveling valves relative to the working barrels.

2. A pump including upper and lower working barrels, the internal diameter of the upper barrel being greater than that of the lower barrel, a connecting tube to the respective barrels, a standing valve in the lower barrel, a standing valve in the upper coupling, a stufling box in the tubular conneetion, a traveling valve in each barrel, a tubular connection between the traveling valves` slidable in the stufling boX, the lower traveling valve being adapted to discharge uid into that portion of the lower working barrel above said traveling valve, means for Jfastening the stufling box against upward movement, and means operated by excessive upward movement of the lower traveling valve. for unfastening the stuiiing box.

3. The combination with upper and lower working barrels and a connection therebe tween, of a valve tube mounted for reciprocation in the barrels and connection, a stuffing box removably supported in the con- U nection and slidably enga-ged by the valve tube for preventing leakage of fluid between the working barrels, means for holding the stuffing box against movement, means controlled by the elevation of the valve tube to a predetermined point for releasing the stufling bo-X Jfor elevation with the tube, said means including a latch carried by the connection, means on the stuiling box for engagement with the.y latch, and means o-n the valve tube for shifting the latch and disengaging it from the stui'ing box when said tube is elevated to a predetermined point lin the working barrels.

In 4testimony that I claim the foregoing as my own, I have hereto afxed my signature.

IRA JAMES PARKER.

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