US1730062A - Fluid elevator - Google Patents

Description

Oct. l, 1929.

l D. B.' DENNIS ET AL FLUID ELEVATOR Filed Aug- 9. 1927 a sheets-sheet 1 FLUID nLEvATon- Filed Aug. 9. 192'!v 2 sheets-sheet 2 D. B. DENNIS ET. AL

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Patented Oct. 1, 1929 UNITED sT'r FLUID ELEYATOR i Application filed August 9, 1927. Serial No. 211,790. l

AThis invention relates to fluid elevators and has for its principal object nto, provide a simple, practical, .and efcient construction adapted to raise oil, water, or other fluidsl from wells.

An additional object is to provide a device of this character which may be used in either deep or shallow wells, and'embodying a construction employing the use of either gas, oil, water or other fluids for Iuse as the lifting medium. i

Another object is to provide a fluid elevator of the above-mentioned character comprising a fluid elevating apparatus including a lifting 15 pipe arranged within a casing in spaced relation thereto and providing a passageway between the same for the lifting fluid, said lifting pipe having a valve mounted therein and adapted to be unseated by the suction action o* of the lifting fluid and employing the suction to further aid in raising the fluidupwardly through said pipe.

Other objects and advantages reside in the special construction, combination and arrangement of the-various elements forming the invention `as more fully hereinafter described and claimed, reference being had to the accompanying drawings forming part hereof, wherein: y v

Figure 1 is a vertical sectional view through lthe well casing and tubing showing my invention arranged in operative position therein Fig. 2 is a similar view of the `-valve con- 35 struction.

Fig. 3 is a similar view of the sliding sleeve mechanism designed to admit the lifting fluid to the pipe for the purpose of unseating the valve.

o Fig. 4 is a transverse sectional view taken along a line 4 4 of Fig. 3.

Fig. 5 is a similar view taken along a line 5-5 of Fig. 3.

Referring now to the drawing wherein for 45 the purposeof illustration we have disclosed a preferred embodiment of our inventiemwe provide a usual well casing 5 withinwhich is arranged the tubing section 6, the walls of the casing and these tubings being disclosed se in spaced relation.

The lower end of this tubing carries a perforated pipe section 7 adapted to admity the fluid to be lifted within the same, thdopening in the upper end of said pipe section bein formed into a seat upon which is snugly tte the tapered lower` end 8 of the body portion 9, secured on the lower end of they lifting pipe 10.

At the tapered end 8 of the body is threadedly attached a perforated tubular fluid in- @o take pipe section 11 extending downwardly within the pipe section 7 the lower end of 'which is provided with a plug 12 forming a guide for a valve stem 13 extending longitudinally through the pipe section 11 and having 65 the upper end of said stem formed into a ball l 14 for engagement upon a valve seat 15 interposed\between the threaded connection of the pipe section 11 and the tapered end 8 ofthe body.

' Thel valve stem carries a coiled spring 16 adapted to normally maintain the ball 14 in v an upward longitudinal pqsition. rlhe lower end of the stem extends through the plug 12 and threadedlycarries nuts 17 adapted to se- 75 cure the stem in adjusted position wherebyto 4regulate the openings between the ball and the seat as well'as to tensionally adjust the spring 16. c The body 9 immediately above its tapered 80 end 8 is externally vthreaded whereby toreceive a pipe section 18 enclosing the body 9 with the walls thereof, arranged in spaced relation and forming a' passageway 19 therebetween. The upper end of the body 9 thread- 35 edly supports a flowing plug 20 having a central opening communicating with the interior of the body, the sides of the plug overlapping the upper end of the `body and having a plurality of vertically extending ducts drilled in 90l the Walls of the plugs, communicating at their lower ends with the passage 1K9, with the upper ends thereof opening into a chamber above the plug with which the opening in the body 9 also. communicates by means of the 95 central opening 21 in the plug'.

The outer walls of the plug 20 form a tight fit within the ocre of the upper end of the pipe section 18. A collar 23 is snugly .fitted about the pipe section 18 and retained thereon we in any suitable manner to 'prevent vertical 'movement with respect thereto, the inner periphery ofthe lower portion of the collar eing reamed out as indicated at 24 to form a spacel passageway between the outer wall of the pipe section 18 and the inner wall of the collar, openings 25 being formed in the wall of the' pipe section 18 communicating with said passageway, said openings being adapted to be closed by a sleeve 26 interposed between the walls of the pipe section and the collar.

A coiled spring 27 is arranged in the passageway immediately above this sleeve adapted to normally retain the latter downwardly in closed position with respect to the opening. Pins 28 carried by the collar, engage the lower edge of the sleeve to prevent the same from sliding downwardly through the flared opening 29 formed at the lower edge of the col-v lar. A pin 30 carried by the section 18 also engaged a lower edge of the collar to prevent .f

l any possibility of the same from moving in a charge fluid therefrom in an upper direction,

and in vertical alinement with the opening .21 formed in the fluid plug 20.

In the operation of the device, after the casing with the tubing and lifting pipe have been lowered in the well containing the fluid which is to be raised therefrom, the fluid used as the lifting agent, which maybe either air,

gas, oil. or water, is then forced into the casing between the same and thetubing under' pressure and admitted throughs ports k33 to within the tubing adjacent the lifting pipe.

l The fluid is forced downwardly in the tubing and through the flared opening 29 in the collar 23 so as to raise the sliding sleeve 26 upwardly thereby admitting the fluid into the pipe section 18, through the opening 25. The fluid which is to be lifted, entering the lower end of-the lifting pipe through the perforated section 11 is drawn upwardly through the body 9 by reason of the suction created by the upward passage of the lifting fluid through the ducts 22 of the flowing plug and the opening 32 in the bridge 31.

The lifting fluid and the fluid which is to be lifted thus intermingle above the flowing plug 20 and together pass upwardly through the lifting pipe 10. Should the pressure exerted upon the lifting fluid be cut oft', the spring 27 will operate to move the sliding sleeve 26 so as to close the openings 25, thus preventing the lifting fluid from entering the well casing, and should the flow of the fluid from the well be cut off, the ball valve 14 will l'rol in, a lifting pipe arranged within the tubing and having its lower ends adapted to admit the fluid to be lifted, said tubing having openings communicating with the casing, a collarcarried by the lifting pipe having its lower end arranged in spaced relation therefrom, said lifting pipe having a plurality of openings arranged therein and communicating with the space formed between the collar and the lifting pipe, and a sleeve slidably carried between the collar and the lifting pipe and yieldably retained in position whereby to close said opening and adapted to be moved ont of closing position by the pressure of a lifting fluid admitted within'the tubing from the casing. Y i

2. In combination, a well casing, a tubing arranged therein and having openings com-l muncating with the casing, a lifting pipe arranged within the tubing, a valved opening carried at the lower end of saidy pipe and adapted to admit the fluid to be lifted to within the pipe, a pipe section carried by the lifting pipe in spaced relation therefrom to form a passage between the walls of the lifting pipe and the pipe section, a plug arranged at t-he upper end. of said passage, a plurality of ducts formed in said plug and communicating with the passage, a bridge extending transverselybf the ing openings communicating. with the spacedlower end of the collar, a sleeve slidably mounted between the collar and the section,

means yieldably retaining the sleeve in closed position with respect to said opening, and adapted to be moved into open position upon the admission of fluid under pressure fromv the casing to within the tubing, whereby .to create the suction within the lifting pipe for raising the fluid to be lifted upwardly there- 1n. I ,M

In testimony whereof we affix our signatures. f

CLAUD WILSON. DOUGLASv DENNIS.

lifting pipe near its upper ends, and having a bore formed there-

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