US588385A

US588385A - David w

Info

Publication number: US588385A
Authority: US
Publication date: 1897-08-17
Anticipated expiration: 1914-08-17

Description

I (No Moden' D. W. BLACK.

DEEP WELL PAKER.

188588885. Patented Aug17,1887.

x. ma "s e@ WITNESSES INVENTOR DAVID W. BLACK, OF

NrTEn STATES- BUTLER, EENNsYLvAN IA, AssIGN'oE: ToA 'BENJAMIN MAssETH, or SAME PLACE.

DEEP-'WELL PA'ckER.

'SPECIFICATION forming part of Letters Patent No. 588,385, dated August 17, 1897.

Original application led March 2, 1897, Serial No.v S2-5,7102. Divided and Y 627,953. (No model.)

To @ZZ whom it mjctr/ concern.'

Be it known that I, DAVID WV. BLACK, of Butler, in the county of Butler and State of Pennsylvania, have invented a new and useful Improvement in Deep-VVell Packers, of

which the following is a full, clear, and exact without the necessity of first withdrawingthef packer entirely from the well.

The device is illustrated in the accompanying drawings, wherein-4 p Figure 1 shows in side elevation one of my improved packers in the position it assumes while being lowered in the well. Fig. 2 is a similar. view showing the parts in the position which theyassume when the packer is raised in order to shift Ythe collar and to enable the packer to be expanded Figs. 3 and 4 are side elevations of a modified construction, showingthe same in two positions, the first in the position which the parts occupy while the packer is being lowered and in Fig. 4 the position which the parts occupy when they have been shifted so as to adapt the packer to be set or expanded.

In Figs. l and 2 I show as a part of the packer the anchor, means for expanding the same, and a rubber tubing. These parts are not shown in Figs. 3 and 4. f

In Figs. l and 2, B represents a portion of the pipe section on which the packer is mounted. C is an expansible packer-tube set thereon and preferably made of rubber in the `usual manner. One end of this packer-tube C bears against a shoulder D on the pipe,

and the other end bears against a shoulder E, formed, preferably,by the end of a tubular section F, which fits loosely around the pipe o B, so as to be capable of longitudinal motion is application filed March I7, 1897. Serial No.

in setting the packer. 4This tubular section F is externally tapering or of wedge shape. A collar G is fitted loosely around the pipe and carries arms orslips H, which, together with the collar, constitute'the anchor.` The arms or slips have leaf-springs I or otherwise project laterally, so as to bear with slight rubbing friction against the side of the hole. A guide-stud j is xed to the collar VGrand is iitted in a-vertical slot k, one side 7c of which is oblique. I also attach to the collar a .spring M, having a locking-stud N, which, when the arms are in locked position, fits within a slot O. The upper end of the slot O is abrupt, so that it will act as a stop toprevent the collar G, with its arms, from movingV upwardly when the stud N'is in the slot, but its other end is tapered, so that on lifting the rcasing the stud cany ride over said tapered portion and thus free itself from the slot. P

kis a stud on the casing adapted to engage an oblique arm Q, which projects from the collar, so as to act in conjunction with the side 7d of the slot k in forming means for turning the collar in either direction, as explained below.

1f new the man rentrenin the e101; o,

vthe packer can be lowered to any desired position in the well, for said slot will prevent the arms or slips from moving upwardly on the tapering section F. /Vhen it is desired to set the packer, the operator raises it somewhat,'tl1e eiect of which is, first, to cause the stud N to pass below the slot O, and, next, the engagement of the arm Q with the stud P will turn the collar G, so as to bring the stud N out of line from the slot O. Thereupon the operator again lowers the .packer somewhat and the pipe B, moving down within the arms orslips, causes the latter to engage the tapering section F and to be eX- panded. This motion is possible because, as'- engagement of the stud I with the oblique side 71;' of the slot to bring the stud N again into line with but above the slot O. If afterward IOO it is desired to unpack the packer and to reset it, say at a lowei` position, the operator raises it, thereby moving the tapering section F up within the arms or slips until finally the stud N slips into the slot O, with which it is then in a vertical line. The arms or slips then being released from the sides of the well by the lifting of the tapering section F above the same are held from subsequent upward motion by engagement of the stud with the end of the slot, so that the packer can be lowered and again reset at any position.

In Figs. 3 and 4 I show a modification o f my invention which resembles the construction above described, except that it dispenses with the slot O and stud N. In this case the guide-slot 7a2 is oblique and has at its lower end an enlarged portion 7c3. The arm Q and the stud P are used as in Fig. Ll. Then the arms are in locked position, so that the packer may be lowered into the well, the stud j on the collar G bears against the shoulder la* at the upper end of the enlarged lower portion h5 of the slot, which upper end acts as a stop. .Vhen it is desired to set the packer in the well, the operator raises it slightly, thus causing the stud P to engage the arm Q and turn the collar G a little to the right, so as to disengage the guide-stud j from the part 7c3 of the slot and to bring it opposite to the part k2. Thereupon the packer is again lowered, when the stud j will move within the slot 7a2 and the pipe B will have unrestrained motion within the arms. The conical section F will thus be moved within the arms and expand the same.

IVhen the packer is to be unpacked and moved, say, to-a lower position in the well, the operator raises the packer, thereby shifting the guide-stud j to the lower end of the slot k2, which, or the lower end of which, being oblique, causes the stud when it passes beyond the end of the slot to be opposite to the shoulder 7a4 at the corner of the part k3,

so that when the packer is then lowered the engagement of the stud with the shoulder 7a4 will prevent the arms or slips from moving up on the pipe l. The parts are then locked and the packer may be lowered and reset at any desired place.

Care should be taken, in releasing the packer and locking it, so that it may be set at a lower position, to raise the packer only enough to bring the guide-stud j out of the oblique slot k2 without lifting the same far enough to cause the stud Pto engage the arms Q and to turn the collar, since otherwise it would bring the parts into unlocked position. prematurely and would thus defeat the object sought for.

I claiml. 'lhe combination with the anchor and collar, of a locking device comprising an oblique guide-arm on the collar, and a stud or projection against which it bears, whereby on vertical motion of the device the collar may be shifted laterally.

2. The combination with .the anchor and collar, of a stop, a locking device comprising an oblique guide-arm on the collar, and astud or projection against which it bears, whereby on vertical motion of the'device the collar may be shifted laterally and brought into and out of locking engagement with said stop.

3. The combination with the anchor and collar, of a locking device comprising an oblique guide-arm on the collar, a stud or projeetion against which it bears, whereby on vertical motion of the device the collar may be shifted laterally in one direction, and an inclined guide-surface by which it may be shifted in the other direction.

In testimony whereof I have hereunto set my hand.

DAVID IV. BLACK.

lVitnesses:

THOMAS W. BAKEWELL, II. M. CoRWlN.