US2633202A

US2633202A - Well fluid stabilizer

Info

Publication number: US2633202A
Application number: US107715A
Authority: US
Inventors: Arlis C Hartsell
Original assignee: Individual
Current assignee: Individual
Priority date: 1949-07-30
Filing date: 1949-07-30
Publication date: 1953-03-31
Anticipated expiration: 1970-03-31

Description

ATTORNE? 2 SHEETS-SHEET l A C HARTSELL WELL FLUID STABILIZER AA All March 3l, 1953 Flled July 30, 1949 March 31, 1953 A. C. HARTSELL WELL FLUID `STABILIZER 2 SHEETS-SHEET 2 Filed July 50, 1949 14g/fsw' Patented Mar. 31, 1953 UNITED STATES PATENT OFFICE 2,633,202 WELL FLUID sTABILIzER Arlis C'. Hartsell, El Campo, Tex.

Application July 30, 1949, Serial No. 107,715

(Cl. 16B-12) Claims.

, 1 This invention relates to a well fluid stabilizer. The invention includes certain improvements over that type of stabilizer disclosed in application iiled by this applicant in the United States Patent Ofce on June 4, 1949, under Serial Number 97,278.

, The present invention relates more particularlyr to certain improvements in the type of packer, or plunger assembly employed.

. It is an object of the present invention to provide in a stabilizer a packer, or plunger assembly, of such construction that the transverse diameter of the packer or plunger body may be readily varied depending on the inside diameter of the pipe in which the stabilizer is to be used.

The packer or plunger assembly is also of such construction that it may be inverted and employed as a swab.

Other objects and advantages will be apparent from the following specification which is illustrated by the accompanying drawings, wherein:

Figure 1 is a side view of the upper end of the stabilizer partly in vertical section and shown located in a well pipe.

Figure 2 is a side view of the lower end of the stabilizer partly in vertical section shown located in a well-pipe.

Figure 3 is a side view partly in section of a weight employed.

Figure 4 is a horizontal cross-sectional view taken on the line 44 of Figure 2.

Figure 5 is a horizontal cross-sectional view taken on the line 5-5 of Figure 1.

Figure 6 is a horizontal cross-sectional view taken on the line 6-6 of Figure 2.

Figure 7 is an elevational view partly in section showing the packer, or plunger assembly being utilized as a swab.

` Figure 8 is an enlarged vertical sectional view of a foot valve employed.

Figure 9 is a cross-sectional view taken on the line 9-9 of Figure 8, and;

ing body and preferably abutting the lower end of the coupling Ia there is an inverted, cupshaped packer or plunger 2.

As shown in the drawing, the upper end of this plunger is clamped between the lower end of the coupling and a clamp ring 3, which may be welded to the lower section of the supporting body I; and there is also an anchor 4 imbedded within the material of the upper end of the plunger and surrounding said body I.

As will be noted from an inspection of Figure 5, the plunger has the inside vertical grooves 5 spaced apart.

Threaded onto the body I beneath the plunger 2 there is a tensioning sleeve 6 whose upper end has an external annular ilange 1, and beneath said flange around said sleeve there are the sectional plate-

like anchors

8, 8 which may be releasably secured together.

There are the tension rods 9 whose upper ends are imbedded in the material of the plunger 2, and anchored to the anchor ring 4, and whose lower ends are secured to the

anchors

8, 8. As is shown in Figure 5, there are, preferably, two of these tension rods between adjacent grooves 5.

Accordingly, the transverse diameter of the plunger or packer 2 may be controlled by the tension applied to the tension rods 9.

When the sleeve 6 is adjusted to create the desired tension so that the packer or plunger will assume the required transverse diameter, a clamp bolt IIJ, threaded through the sleeve 6, may be screwed inwardly t0 engage the body I to maintain the desired tension.

As is well known, the inside diameter of well pipes vary, and it is accordingly desired to be able to adjust the packer or plunger 2, so that it will nicelyiit within the pipe, neither too tightly nor too loosely.

. In order to prevent the inadvertent unscrewing of the coupling la from said lower section, these parts may be additionally secured together by means of set screws as II. l

Screwed onto the upper end of the upper section of the body I there is a head I2 which has the inlet openings I3, and whose upper end is of a conical shape.

When in use, there is a cylindrical weight I4 which rests onrthe head I2 and whose lower end is provided with a conical shaped cavity I5 to snugly receive the upper end of the head I2 as shown in Figure l. The weight I4 may vary depending on the pressure of the fluid in the well pipe I6 being withdrawn from the well.

Secured on the lower end of the supporting .novel mannen .opposing circumferential `keyways 21, 2I which" body there is a back pressure valve assembly I'I. This assembly includes a valve body I8 which is screwed onto the lower end of the supporting body, and which is provided with a valve seat I9. Cooperating with the seat there is a downwardly opening valve which is provided with an upstanding stem 2 I. 'I'he valve is also provided with a depending stem 22 which works through the guide 23 inithelower end of thehousing24, which is securedlon'lthe valve body. The lower -end'of the guide 23 is internally threaded to receive the plug 25.

There 'is a strong coil spring 22a Laround the stem 22 and interposed between the valve and the upper end of the guide 23 which normally holds the valve closed. i

The housing 24 is provided with suitable outlets 26 beneath the valve seat so that iiuidiorced downwardly through the pipe I6 will open said valve and pass .through Vthe outlets 2B.

lAs is illustrated in FiguresZ, 8 and 9, the Ahousing 24 may be secured on the valve `body in a The lowerend ofthe '.body has .terminate in opposing. downwardly `directed .slots 28, .28. The `housing `2li has the `inwardly exv.tended keys r29,29 secured .thereto which .may be passed-upwardly through the slots 28 and then turned into said keyways as Yshown in Figure `9.

. As wil=l--be notedirom. an .inspection of Figures 2 and .8, :the Aupper end .of the housing 24 is diagonal with relation to the axis of the valve body, and

said ybody has `an external shoulder 3l) therearound which is also diagonal tosaid axis but `which'is vpitched .transversely with respect to the Ypitchrof 4the upper end of the housing .24, and when .the housing :is applied to .the body and the keys 2'9 inserted into .the keyways 21, `an open ilexible ring 3.I `conforming in shapeto thespace :between .theshoulder .3.0 andthe opposing end ,of thehousing, may .be -clamped .in Asaid space and will lock `the housing and valvebody against `rela- `.tive.turning so .as to maintain .the back pressure -valve .assembly in assembled relation.

There .is a Lcollar 32 which is slidable on the .upper sectionof .the supporting .bodyl being limited in its upward movement on said body .by the annular .stop .33 which is welded .to said body l above .said collar.

.Fastened to the collar 32 there are the exible `armsll I.whose upper ends extendabove the collar ,anddivergeoutwardly and whose lower ends ex tend beneath the collarand `secured to said lower :ends are the vwedge-.shaned jaws 3.5 which ride ,against .the .tapering surfacesof the coupling Ia. .The ,outer surfaces .of .these jaws :aretoothed .so ...as to engage the pipe I6 v,when .the jaws .are -expanded. The sections of the wellpl/Je ILS are .con-

y .nected by .conventional couplings 36 whose inside ,diameteris somewhat greater than the inside `diameterofthe pipe.

`vtive to the pipe I6 theupper ends of the .bars `34 ,will expand out into the coupling `3.6 asis shown y "in Figure vljbut when a, coupling is 4passed they will be contracted inwardly and will pass on As 4the toolis lowered rela- Vthrough the pipe. vThey will vhold .the jaws 35 elevated and thus contracted away from the pipe,

:and 'it will `be stopped at that'point bythe cupshaped plunger 2, andwill bemaintained in place as the pipe I6 is pulled upwardly and broken out. so that as the pipe above is broken out there will .heno wellliquid in it to spill out over the derrick floor, but it will be swabbed substantially dry.

.From .the foregoing it is apparent that the plunger 2 should be adjusted to nicely t within 'the 'pipe 'to 'be'pulled and in this connection it may he stated that the plunger 2 is provided with the inside vertical grooves l5 so as to facilitate .the-.contraction of the plunger incase it becomes [necessary to contract 'it to any considerable degree.

lDuring the pullingoperationyif it becomes necessary to .force fluid down through the stabilizer and pipe I6 and back up around said pipe this can be readily done owing .to the provision of the back. pressure valve atthe lower end of lthe-tubular supporting body I.

The pipe I6 will usually carry'some type of fwell equipment at its lower end so that the tool will `be retained in the lower, or last, section oi' the pipe being withdrawn, and'when said section is withdrawn the tool may thenbe recovered fromit.

.As illustrated in Figure .'7 the'packer or plunger is reversed and may be usedas a swab. This is accomplished by detaching the coupling Ia from the body section above and reversing thepacker or plunger.so that the foot valve will .be above and the packer Ywill open upwardly.

In such case the plug 2 5 is removed and a sinker 'bar`3'l is attached to. the foot valve assembly and a cable connected to the sinker bar which extends 'to the ground surface, and by means of which the swab may be operated in the conventional manner. In .other respects the .construction of the swab shown in Figure '7 is the same asthat shown in Figures l and 2.

What I claim is:

1. In well eoluiprnenha4 tubular Asupporting body, a cup-shaped, `flexible plunger secured around the bodyand having spaced internal longitudinal grooves therein, a tensioning sleeve adjustable on the body and having an external flange, an annular anchor around the sleeve .and engageable withsadcilangeto cansetheanchor to move with .the .sleeve .away from `theplunger Vand Vtension rods each embedded at one .end in the material vol? .the plunger betweenadjacentones of said grooves and connected, at the other end, tothe anchor.

2. In well equipment, a `tubular supporting body, a cup-shaped plunger on the body and havingrcircumferentially spaced internallongitudinal grooves therein, a tensioning sleeve movably carried on the body spaced from the Vplunger and 4having an external flange, an annular anchor surrounding the `sleeve yand engageable with said iiange to cause the anchor to move withthe sleeve away from the plunger, tensioning rods imbedded inthe plunger between the grooves and anchored to the plunger at one end and whose other ends are connectedto the anchor, .and means for adjusting the sleeve onthe body 'forvarying the tension on said rods and .the plunger. 3. In well equipment, a tubular supporting body, a cup-'shaped plunger one end of'which is aesaaoa tted closely around the body, an anchor located within the material of said end of the plunger, a tensioning sleeve movably mounted on the body and spaced from the plunger, an anchor mounted on said sleeve for movement therewith and in which the sleeve is rotatable, tensioningr rods embedded ln the plunger and connected at one end to the plunger anchor and at their other ends to the sleeve anchor, and means for adjusting the sleeve on the body to vary the tension on said rods and plunger.

4. In well equipment, a tubular supportin body, a cup-shaped plunger on the body one end of which fits closely about the body, said plunger having internal, longitudinal grooves, an anchor Within said end of the plunger, a tension sleeve movably mounted on the body, an anchor mounted on said sleeve and in which the sleeve is rotat able, tensioning bars imbedded, at one end, in the material of the plunger and connected to the corresponding anchor and whose other ends are connected to the sleeve anchor, and means for adjusting the sleeve on the body to vary the tension on the plunger to in turn vary its transverse diameter.

5. In well equipment, a tubular supporting body, a cup-shaped plunger on the body one end of which lts closely about the body, said plunger having circumferentially spaced internal longitudinal grooves therein, anchoring means located within the material of said end of the plunger, a tensioning sleeve threadably mounted on the body in spaced relation to the plunger and having an external annular flange, an annular anchor formed in segments secured together about said sleeve and in which the sleeve is rotatable, said annular anchor being engageable with said flange to cause the anchor to move with the sleeve away from said plunger, pairs of tensioning bars embedded, at one end, in the material of the plunger between adjacent ones of said internal grooves, and connected to said anchoring means and whose other ends are connected to said annular anchor.

.ARLIS C. HARTSELL.

REFERENCES CITED The following references are of record in' the 20 le of this patent:

UNITED STATES PATENTS