US859304A - Oil-well packer. - Google Patents

Description

No. 859,304. PATENTED JULY 9, 1907. W. H. LARKEN & J. D. BROODE'R.

l OIL WELL PAGKBR. APPLIOATION FILED JUNE 27. 190e.

FIG. 3

Y WITN ESSES.

UNTTED sTATEs PATENT oEEIoE.

WILLIAH H. LARKlN, OF BUTLER, AND JOHN D. BROODER, OF KANE, PENNSYLVANIA.

OIL-WELL PACKER.

Specification of Letters Patent.

Patented July 9, 197.

Appunti@ sled June 27,1906. Serial No. 323.751.

To all 'whom it may concern:

Be it known Athat we, WILLIAM H. LARKIN, a resident of Butler, in the county of Butler and State o Pennsylvania., and JOHN D. Buoonsn, a resident of Kane, in the county of McKean, State of Pennsylvae nia, have invented a. new and useful Improvement in Oil-Well Packers; and we do hereby declare the iollowing to beaull, clear, and exact description thereof.

Our invention relates to packers for oil, Tas and like deep wells, its object being to provide a packer which maybe lowered on a string of tubing down through the casing and be packed at a point in the well below the casing and at a point within the casing, so as to shut off any leakage occurring at the bottom of the casing.

To these ends our invention comprises the novel features hereinafter set orth and claimed.

ln the accompanying drawing Figure 1 is a sectional view in elevation of a portion of a well with our improved packer therein; Fig. 2 is an enlarged view partly in section of the upper packer; Fig. 3 is an enlarged detail View showing the ball bearing construction; and Fig. 4 is a modified form. Fig. 5 is a sec-` tional'view of the lower packer taken at the opposite angle to that shown in Fig. 1; and Fig. 6 is a view of one of the disks. I

In oil `and deep wells of this character a leak is liable to occur just below the casing where it rests upon the surrounding rock, and in order to shut ff the water at this point it has beennecessary heretofore to lower a string of tubing with the packers thereon andpack the well at points above and below the leak, the string of casing on which the packers were lowered being allowed to remain within the well. By our invention', however, we provide for the shutting ofi of the 'water at such point and provide for the withdrawal of the tubing upon which the packers were lowered.

y. In the drawing the numeral 2 designates an oil or like well and the numeral A3 designates the casing which rests upon the shoulder 4 formed in the well. It is at this pointthat the' leakage is liable to occur and the well must be packed at points above and below this shoulder 4. To accomplish this we lower by means of the tubing 5 the packers 6 and 7 which are connected by the proper sections of tubing 8.' The lower packer7 may be of what is known as the disk type, which comprises thepacker body 9 with the rubber sleeve 10 interposed between the threaded collar 11 and the co'ne 12. The wedge arms 13 are adapted to engage the cone 12 andthe walls of the well so as to sustainl the packer and distendthe rubber sleeve 10.-

Belfow the a1'ms13 is the spring 14 which is adapted to force ,up the arms 13, said spring being interposed between a ring 15 connecting the lower ends loi said which engages the spring 14 and passes through openings lS in the packer body. As soon as the packer 7 has been brought to the point where it is desired to pack, a weight of any desired character is dropped down through the tubing and this weight breaks said disk and frees the spring 14 so thai; it carries up the arms 13 to engage the sides of the well to prevent the further movement of the packer. of this packer '7 known as the disk packer, is an old and well known device and we do notmako any claim to its construction.

The packer 6 comprises the body portion 2() to theA lower end of which is secured the collar 2l, the threaded portion 22 of which engages the tubing 8, while the threaded portion 23 engages the body 20 oi the packer. Surrounding the body 20 of the packer is the rubber sleeve 24 which is interposed between -the collar 21 and the loosely mounted ring 25. Resting on the ring 25 is the washer26 preferably of brass. A ball-race 27 is located above the washer`26, said ball-:mie having the balls 28 therein.

An extension sleeve 29 isinternally threaded and engages the threaded portion 30 or the body 20. This extension 29 is cutaway as at 31 to receive the sleeve 32 secured thereto by the screws 33. This sleeve 32 has the inwardly projecting flange 34 which is adapted to engage the ball-race ring 27. This sleeve 32 does not rest upon the ring 25 but a space 35 is left between the lower end of said sleeve and the` ring 25so that the turning of said extension 29 does not create any friction between said sleeve and the ring 25. Y

An-annular groove 36 is formed in the lower face oi the extension 29 to receive the upper portion of the friction balls 28.

At the upper end of the extension 29 is the bayonet joint slot 37 which is adapted to be engaged by the corresponding bayonet joint lugs 38 on the connection 39 secured to the lower end of the tubing 5.

The packers 6 and 7 together with the connecting casing 8 are lowered into the well by means ofthe tubing 5 which engages the extension29 by means of the bayonet joint connection, and when the packers have been brought 'to the proper position the lower packer 7, as above described, is packed by dropping a weight to break the disk 17, whereupon lthe weight of the tubing being lowered acts to pack the packer 7 securely in place; In order to pack the upper packer the tubing 5 is turned and the extension 29 with it. As the extension 29 is turned it screws down upon the body 20 of the packer and the rubber sleeve 24 is distended so as to be forced out againstthe walls of the casing 3.

The ball bearing permits the ready movement o the sleeve 29 so as to force out the packer, and as the lower end ofthe sleeve 32 is not in frictional contact with the lring 25 no friction is created at this point, while the brass washer-26 reduces the friction between the lower The construction end of sleeve. 29 and the ring 25. In this way ille packer (i is properly packed, and when packed by turning ilie tubing 5 and lifting up thereon the tubing 5 is disengaged from tbe extension 29 and the tubing may tllen be withdrawn from the well7 leaving the paekers securely paelted in position at the desired points,

In Fig. 4 We have illustrated a modified form of our invention in which the Washer 2G is dispensed with,

the construction in other respects being tbe same as that above described.

In ease it is desired to remove the packers from' the well ii; is only necessary to lower tbe string of tubing 5 and connect up the bayonet joint, whereupon by rototingr the tubing 5 the upper packer G is unpacked. Il, will be apparent from the construction of the packer 7 that while it cannot be lowered after once set it can be raised. 'As a consequence, after the upper packer G has been unpacked by drawing up on the tubing 5 the lower packer will be drawn up at the saine time as tbe Wedge arms 13 will be carried down by Contact with the walls of the Well and allowed to be moved upward.

What we claim is:

1. ln a par-,kingr device for oil and lke wells, the conibination of a body-portion, an elastic sleeve, an abutment below said. sleeve, a rotary extension above said sleeve, a ring between said rubber sleeve and said extension, a sleeve on said extension havinga shoulder, and a ball benz-ing interposed between said shoulder and the lower end of said extension, a spare being left between ille lower end of said second sleeve and said ring.

l2. In a packing device, the rolnbinai'ion of a body porlion, an elastic sleeve, an abutment below said sleeve. n rotary extension above said sleeve, a ring :it the ripper end of said rubber sleeve, a ball-rare ring above said ill-sl rinballs interposed between .said balla-are ring,4 and the lower end of said extension. and a sleeve, on said extension buv ing a shoulder engaging' tbe bulliaee ring, a spare bein.;- left between said ser-ond sleeve and said Ilrst ring.

3. In a pai-kine' devee. lire eoulbinaiion of a body pon tion, an elastic sleeve, an abutment below said sleeve. a rotary extension above said sleeve. a rin;r at ille upper end of said rubbetl sleeve, a ball-race ring above said lirst ring, balls interposed between Szi'dlialla'aee rin; and ille lower end of said extension, a washer between said rings, and a sleeve on said extension having a shoulder erlgagingr tbe ball-raee ring, a space. being left between said seeond sleeve and said iirst ring.

4. In a packing device for oil or like wells, the eombina lion of a' body portion, an elastic sleeve, an abutment below said sleeve, a rotary extension above said sleeve. a sleeve on said extension having an inwardly projecting' portion, and a ball bearing; supported by said inwardly projecting, portion and interposed between the lower end ol' said extension and said elastic sleeve.4

In testimonywhereof, the said WILLIAA H. LARKIN and .Tous- D. Baooonu have hereunto set their bands.

. WILLIAM LI. LARKIN.

Witnesses Rom?. D. I'oTIEN, Roi-,ERT C. TofrTEN.

JOHN 1). BROODER.

Witnesses:

JOHN F.' WILL, J. R. KELLER.

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