US530631A - Well-packing - Google Patents

Description

(No Model.) sheets-sheet 1.

E. T.. WARNER. WELL PACKING Patented Deon. .11. 1894-.

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- E. T. WARNER.

. n WELL PACKING. No. 530,631. Patent'edvo. 1l, 1894.

UNITED STATES PATENT l"OFFICE.

EGERT T. WARNER., orY LwooD,-1NDIANA.

1WELL-PutoKING.l

SPECIFICATION forming part of Letters Patent No.v 530,631, dated December 11, 1894. v Application tiled February 10, 1894.. Serial No. 499,811. (No model) To all whoml it may concern:

Be it known that I, "EGERT'T. WARNER, a c1t1zen of the United States, residing at Elwood, in the county lof Madison and State of .Ish

Indiana,rhave invented a new and useful Well-Packing, of whichv the following is al specification. n

This invention relates to well packing for l gas or oil wells; and it has for its object to effect certain improvements in packers for gas and oil wells, whereby efficient means shall be provided for completely 4separating the lower fluid or water which accumulates in gas or oil wells belowthe upper fluid or gas.

To this end the main and primary object of the present invention is to construct a combination packer theparts'of which may be used either jointly or separately according to the depth of the well, to provide means for properly separating the gas or oil from the lower fluid which may have collected therebelow, by either conducting such lower fluid separately out of the well, or entirely cutting the same off from communication with the upper fluid or gas.

With these and other objects in view, which will readily appear as the nature of the invention is better understood, the Asame consists in the novel construction, combination, andr the packer which may be termed the lower or screw packer. Figl 6 is a 'detail sectional view on the line y-y of Fig. 5;

Referring to the accompanying drawings, A represents a portion of an ordinary well tube employed in the tubing of a gas or oil well, and in the present invention thewell tubing A is adapted to loosely pass through a rubber packer collar B, such as 'ordinarily employedA in well packing, and which is adapted to be expanded'out against the sides of the well to hold the packing in position,

braces the upper end of the collar B.

andin the present invention the rubber collar B, is interiorly shouldered at C, at the upper end of the bore therethrough, and in such upper end' is tightly fitted the packer sleeve D, to which the upper end of the packer B, is wired or otherwise suitably fastened.

- The sleeve D, is adapted to loosely fit over the tube A, and is'disposed directly above the shoulder ring F, made fast on the tube A, and adapted to bear against the loweredge of the sleeve D, and the interior. shoulder (l, of the collar B, according as the packer -is being lifted'out of or placed-in thel well.

The upper rubber packerB is provided with beveled upper and lower ends G, and the upper beveled end -is adapted to be engaged by the packer cap H. The upper lpacker cap H, is interiorly threaded as at h, to detachably engage' the threaded portiongh, of the well tube A, so as to be carried by the well tube, and at this point it is to be noted that when the entire line of well tubing is freeto yield toits weight, such weight will be placed on the cap H, andaA consequent pressure exerted onto the upperfendof the rubber packer B, and thereby cause the same to swell out or expand against the sides of the well. This may therefore properly be termed a pressure packer. The lower beveled `end G, of the rubber packer collar B, is embraced b5 the lower packer cap I, which is provided with a beveled flange J, to embrace and engage with the lower beveled end of the collar B, to properly hold the same in position, and this beveled flange J, of the lower packer cap I, is reversely disposed to the inwardly beveled flange J', of the upper cap H, and which'em- The lowerv packer cap I, embracing the lower end of4 thev collar B, is unthreaded and loosely receives the well tube A, to permit theV same to freely work therethrough, but such packer cap is exteriorly threaded as at K, to removably engagethe upper threaded neck L, of the longitudinallyslotted coupling cage M. The coupling cage M, is provided with a series oflongitudinal slots N, having at .their upper ends the shouldered volf-sets O, to receive the wings of `the winged-coupling'head P, adapted to slide in the slots of said cage. The winged coupling head P, isy interiorly threaded as at p, to engage the lower or inner IOO threaded end of the tube A, which passes through the upper packer, and the wings of said coupling head are adapted to rest on the shoulders of the slot ott-sets when the packer is being placed in position in the well so as to relieve the rubber B, from the weight ofthe line of tubing above the coupling head.

The construction just described completes the upper pressure packer, of the combination packer, as adapted to be placed in position within a gas or oil well by the well tubing, and acts in the capacity of an ordinary packer to pack the well above the gas or oil and to provide for the proper conducting of the gas or oil to the ltop of the well and point of use.

In placing the upper pressure packer in position within a well, the winged coupling head rests in the shouldered o-Sets O, as the tubing is being turned in position, and the pressure of the cap H, is relieved from the upper end of the rubber B.

After positioning the packer, the tubing A, is turned so as to bring the wings of the coupling head out of the olf-sets 0, to permit the same to slidedownward in the slotsN, which movement places the entire weight of the line of tubing onto the upper end of the rubber collar B, and expands the same out against the sides of the well, to tightly hold the device in position, and at this point it is to be noted that a packing washer p', is arranged on the well tube above the head P, and ecctually prevents any gas or liquid from entering inside of the rubber collar and expanding the same so as to interfere with the easy positionngthereof,wl1ich is quite common in most forms of packing employing rubber collars.

ln the act of lifting the tubing A, the shoulder ring F, is brought against the packer sleeve D, whereby the strain incident to removing the packer is placed on top of the rubber instead of at the bottom as is usually the case, so that the rubber is prevented from expanding when the packer is being opened, but is stretched out so as to permit an easy removal from the well, or the free turning of the well tube inside of the rubber without disturbing the same.

Ordinarily the upper pressure packer just described is used in conjunction with a lower screw packer which cuts olf the lowerfluid or water from the gas or oil, which passes into the cage M, and out through the main Well tubing A, in the ordinary manner, and adapted to be removably coupled to the lower end of the coupling cage M is the cylindrical closed fluid chamber R. The cylindrical chamber R, is provided' at its upper end with the threaded opening r, which receives the tube or pipe fr', coupling the same to the cage M, and which corresponds in diameter to the well tubing, and takes the place of the well tubing itself when the lower packer is placed in a well independent of the upper packer already described.

The closed iluid chamber R, is further promeans for drawing out the lower fluid or water to any convenient pointof discharge. said cylindrical chamber R, is provided at its lower end with a left threaded opening S, which engages the left threaded upper end s, of the lower packer tubing T, onto which is itted a lower rubber collar B', provided with beveled upper and lower ends G', the upper of which beveled ends has fitted thereover the flanged cap t, unthreaded to loosely fit over the tubing T, while the lower beveled end of said collar B', is confined by the beveled langc of the lower flanged cap t', interiorly threaded as at't2, to engage threads on the tubing T.

The packer tubing T, supports in position directly below the rubber packer B', a slotted inlet cage U,'to admit the lower Iluid or water into the tubing and the chamber R, from which it is conducted to the top pf the well, and below the cage U, is supported in position the anchoring head V. The anchoring head V, is provided with a series of longitudinal spring slots fu, which adjustably receive the curved anchoring spring WV, projected above and below the head and con` fined therein by the retaining rings w, removably engaging the exteriorly threaded ends w', of said head. The anchoring springs W, are adjusted to and from the curved bases X, of the slots fu, by the adjusting screws and are provided with twisted engaging points Y, which are adapted to bite in the sides ofthe well and prevent the packing from turning therein when placed in position.

All of the screw joints of the combination packer are tightened before placing the same in position except the left threaded joint S-s, and by turning the tubing in a direction fto screw the cylinder R, in position, the said cylinder will be screwed tightly onto the cap t, and thereby exert a screw pressure on the upper end of the rubber B', and expand the same ont against the sides of the well. When it is desired to leave the lower screw packer just described in the well, it will be seen that by the act of unscrewing the upper TheV portion of the well tubing to take out that j portion above the cylinder or chamber R, the latter will be screwed tightly onto the rubber B', so as to expand the saine against the well sides by screw pressure.

Preferably the two parts of the packer are used conjointly as illustrated, but it will be obvious that the lower screw packer may be separately placed in position within a well by coupling the tubing A, in the upper threaded opening r, of the screw cylinder or chamber R, and subsequently removing this tubing in the manner already described. Itis to be further observed that in the event of not using the pipe rs, when the lower packer is used with or without the upper packer, the opening r2, may be suitably plugged to` cut o or separate the lower fluid or water from the upper gas or oil'.

Changes inthe form, proportion and the minor details of construction may be resorted t0 without departing from the principle or sacrificing any of the advantages of .this in. vention.

Having thus describedthe invention, what is claimed, and jdesircd to be secured by Letters Patent, isf 1. In a well packing, the combination with aline of well tubing; of the upper rubber packer loosely ar-rangedon the well tubing and ladapted to be expanded against the sides of the well by the weight of such tubing, an inlet cage for the upper packer and communicating with the well tubing below theupper packer, a lower rubber packer connected with the cage of the upper packer, an inlet cage for the lower packer below the same, and a separate liuid conducting pipe arranged within the well tubing and communicating with the interior tubing of the lower packer, said conducting pipe passing up through the upper packer and well tubing, substantially as set forth.

2. In a well'packng, the combination with the Well tubing; of'a slotted combined coupling and inlet cage, a rubber packer loosely fitted over the well tubing, a packer sleeve made fast in the inner upper end of the rub-- ber packer a shoulder ring tted onto the tubing below said sleeve, ripper and lower packer-caps embracing the upper and lower ends of the rubber packer and the upper of which is tted ou the well tubing, and a winged coupling head fitted on the lower end of the well tubing and arranged to work in said slotted cage, substantially as set forth.

.3. In a well packing, the combination with the well tubing; of acombined coupling and inlet' cage provided with longitudinal slots having shouldered OEI-sets at their upper ends, a rubber collar loosely fitted over the well tubing'and having beveledupper and lower ends, an interior shoulder, a packer sleeve made fastv within said collar, a shoul\ der ring fitted onto the tubing between said sleeve and the shoulder of the collar, upper and lower anged packer caps embracing the upper and lower'ends ofthe collar, the upper of said caps being fitted onto the well tubing and the lower cap being removably fittedin the upper end of said cage, and a v winged coupling head itted onto the lower end of the well tubing and working inside of said slotted cage and the o-sets of the slots,

Y forth.

- 5. In av well packing, the combination with the Well tubing and packing devices; of an anchoring head provided with a series of lonf gitudinal spring slots, anchoring springs adjustably mounted in said slots and provided with twistedengaging points at their extrem ities above and below the anchoring head, and removable retaining ringsengaging the upper and lower ends of said anchoring head to confine the `spring ends therein, substantially as set forth. t

Intestimony that I claim the foregoing as my ownI have hereto affixed my signature in the presence of two witnesses.

EGERT T. WARNER.

Witnesses: Y

A. F. BOURBON, WARD. L. RoAcH.

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