US1603138A - Oil-well swab - Google Patents

Description

Oct. l

W. J. MILLER oIL WELL swAB Patented Oct. 12, 19,26.Y Y

VUNITE sr vWILLIAM I. MILLER, oFIroUsroiv, TEXAS;

' npplicaubntlea october 23, 1925. seriaruo. 64,411.

. This invention relates to a well swab,"th'e Y general object of lthe invention .being .to

increase the efliciency of the device by lrotatably connecting the'swab tothev other parts so that the swab will not rotate inthe casvalve means for holding the oil in the pipe'r and above the .swab on the .exterior ofthe pipe where it is visiblevand. easily accessible.

A further object of the invention is tov provide meansv for jarringv the swab to loosen the same if it should become stuck in the well. c g l f A still further objectief th-e invention is to ormthe valve means that they willl be selfgrinding as the device is ybeing operated.

y This invention v*also consists in certain other features of' construction and 1n the combination and arrangement of the several parts, to be hereinafter fully described, illustrated in the accompanying drawings and specifically' pointed out in the appended claim. y' f In describing my invention in detail, reference will be had`v` to the; accompanying .drawings wherein like ycharacters denote like or corresponding parts throughout the several views, and which:-V l

; Figure 1 is an elevation of the device.

Figure 2 is a longitudinal sectional view, showing the'parts in a different position.

ure v1. Y

Figures r4, 5 and 6 are parts of the device. .y

Figure 7 shows the swab in lits lowest position. Y

In theseviews, 1 indicates a long length pipe which isconnected with the pipel 2 by the coupling 3, the pipe 1 'being of greater.

diameter than the pipe 2- and the coupling being made tovproperly vconnect the two" pipes together. The pipe 1 is kprovided with perforations 4 for the outlet of oil and he pipe 2 is provided with perforations 5k ior the inlet of oil.l A rope socket 6 is connected with the upper end ovthe pipe 1` forreceiving the' cable 7 and the lowerend of pipe 2 is closed by a plug 8.

Figure 3 is a section on line 3--3 of Figa views of l various Thev swab" l9,*whi'chi-is preferably formed' l ,itis

of rubber vor the like,'is carried by a tube 10 vwhich is slidably mounted on a part ot the lpipe-2. L.The swab is held in place on Athetube'by the uppery and lower nuts 11 threaded tothe tube andthe washers 12 which are placed between the nuts and the Y ends -of'the swab. A jar member 13 .is

4connectedl withv therupper endfoi'y the tube y 10 and cooperates with ajar`part14ffo-rmed on'thelower end" of the coupling 3. A

valve part ..15 is connected with the lower endet-the tube 10 and 'cooperates witha valve part 16 connectedv with the lower end of. the pipe l2,y below the perforationsfin saidjp1pe. The part 15 has an`V annular groove 17'therein for receiving an annular Y.

iange 18, onthe part 16.

v'From thev `foregoing, it will be seen that theswab is swiveled on'the pipes so that said pipes can havev turning movement without thel 4swab turning and thusthere is 'no i danger of-.thfe parts becoming disconnected by theftwisting movement of the pipes with the swab remaining stationary as there'isv when the swab is firmlyconnectedA with the pipes. As the device descends, the part 14 i will press upon the partv 13 and thus force the swab to Vmove downwardly with the rest of the device and in this position of the parts, -thevalve parts will be separated and ther pe-rforations 5 will be exposed so that when the device enters the liquid inthe well, said liquid will pass through the. perfora- A'tions and iow upwardly through the pipe 2 intofthe pipe 1 `and will escape through the peiforations 4 into the well casing abovethe y swab. 0n the upwardstroke, ythe swab remains stationaryr as the parts pass upwardly until the valve part 16 strikes the part 15,

when the swab is moved upwardly with the f other parts. The engagement of the two valve parts prevents the liquid from returning to the well as the perforations 5 are covered by the tube 10 and any leakage from between the pipe and tube is stopped bythe valve part. -As the device is being reciprocated by the cable, thefsaid cable has a ten-4 dency to turn the parts but this turning movement is not transmitted to the swab, as

before explained, but the movement of the valve part 16 in .relation to the part 15 makes .thevalve parts self-grinding, as the flange 18 turns in thefgroove 17. The jar parts 113 and 14 enables the swab to be'loosenedif vit should become stuck in the well by letting the part 14 fall upon the part 13 to set up a jarring action. The valve parts are visible so that they are easily vaccessible and the perforatedrpart of pipe 2 is below the swab on the downward stroke of the device so that the liquid can enter the device through said perforations land after flowing through the portion of the pipe which passes through the swab7 will escape from the perforated part of the pipe l above the swab.

lt is thought 'from the foregoing' description that the aC Jantages and novel features of my invention will be readily apparent.

I desire it to be understood that. l may :nahe chanojes in the construction and in the combination and arrangement of the several parts, provided that sueh changes fall within tl e scope of the appended claim.

lllhat l claim is;-l

pump plunger of the character described comprising` a. hollow ste-1n having inlet openings adjacent the lower end thereof, and outlet openings adjacent the upper end thereoa sleeve loosely mounted on said stein and capable of rotation with relation thereto, a swab fixed on saidsleeve, said sleeve projecting` above and below the swab and-exterioiily threaded, a valve member threaded ou the lower end of the sleeve and l formed fwith an annular groove, and a cooperatine` valve member carried bv the lower end of the stein for movement toward and away from the first mentioned valve ineinber, and incliulingv an annular .flange adapted to be seated in said groove when the valve is closed for the purpose specifiedV In testimony whereof my signature.

VLLAM J. MILLER.

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