US754138A - Oil-well packer. - Google Patents

Description

PATENTED MAR. 8, 1904.

CfM. HEEI'IEB'..` l OIL WELL PACKER.

APPLIUATION FILED nu 11, 1903.

N0 MODEL.

INVENTOR WITNESSES m: Noms Ps1-:ns co. Hmm-Lupo.. msnmnmv. o. c.

UNITED STATES Patented March 8, 1904.

PATENT OFFICE.

CHARLES M. HEETER, BUTLER, PENNSYLVANIA.

OIL-WELL 'PACKER.

SPECIFICATION forming part of Letters Patent No. 754,138, dated March 8l, 1904.

l Application filed May l1, 1903. Serial No. 156,594. (N0 model.)

T0 all whom it may concern:

Be it known that I, CHARLES M. HEETER, of Butler, Butler county, Pennsylvania, have invented a new and useful Oil-Well Packer, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this speciiication.

Figure 1 is a vertical section showing my improved packer at the bottom of a well with the parts in position before packing. Fig. 2 is a view similar to Fig. 1, showing the parts in the packed position; and Fig. 3 is a view similar to Fig. 1, showing a modiiied form.

My invention relates to the packing of deep wells, such as oil or gas wells, and is designed to provide for easy pulling out of the casing above the packer, leaving the packer in the well.

In ordinary constructions when a well is abandoned a casing-cutter is lowered within the casing to cut it off near the bottom and leave a small part of the casing in the hole. The expense and trouble of this operation is avoided by my construction by reason of a frangible joint, which is broken as the packer is set or packed. The invention is also of advantage where several strings of casing are used of dili'erent diameters. lnsuch case where oil or gas is obtained there is no way of cutting the outside strings of casing, and it is necessary to work it loose with machinery at the top of the hole. This often fails where the hole caves, and if the casing is pulled apart, as often occurs, the greater partof itis usually left in the hole. My invention enables the various strings to be drawn up when desired, thus saving greatly in the cost of deep wells.

In the drawings, referring to the Jform of Figs. 1 and 2, 2 represents a casing-section havingashellor sleeve 3 secured thereto by an inner thread connection. The shell 3 extends through a shallow metal ring 4, which is threaded within the upper end of an outer casing-section 5. Within the lower end of this casing-section is screwed a hollow plug connection 6, at the upper end of which is located a packing 7 of lead or similar material. A casing-section 8 is threaded to the plug 6 and at its lower end is connected to an outer sleeve 9, within which is secured a packershell 10; lA lower cone 11 surrounds the lower part Vof the shell 10 and is secured to it l by rivets 12. An annular packing 13, of lead, rubber, or vother suitable material, extends around the packer-shell and around the cone. The lower portion 14 of the cone is arranged to rest upon the bottom of the well, as shown. The ring 4 and the rivets 12 are made of such strength that they will not be broken during the lowering of ,the casing in the well; but when the casing reaches the bottom or a resistance is `otherwise formed the weight of the superimposed casing will shear oil3 the rivets 12 and the threads of the ring 5 and allow the shell 3 to slide down and rest on the lead packing 7. At the same time the weight of the casing drives the packer-shell 10 down-- wardly Within the cone until the lower end of the shell rests upon the limiting-shoulder 15. During this action the lead gasket is forced down around the cone by the collar 9, and is thus expanded, so as to effectually pack the bottorn of the hole. The casing is thus packed externally at the bottom and at the same time is packedat the joint between it. and the packer internally. If it is desired to remove the casing from the well, all that is necessary is to draw it up, when the shell 3 will be lifted from the lead packing, and the casing will pull out of the packer, from which it was disconnected at the time of packing.

In the form of Fig. 3 I show the lower shell 10 of the packer as provided with a shoulder or ring 9', bearing upon a rubber sleeve 13.

The lowerend of this gasket bears upon a sleeve 16, which is riveted to the lower end of the shell 10'; An inner shoe 17 is screwed within the lower end of the .collar 16, and on it rests an annular lead packing 7 In this case when the shoe 17 rests at the bottom of the well Vthe weight of the casing will shear off the rivets, and the ring 9l will compress the rubber as the shell 10 descends. The lower end of the shell 1,0 then reaches and compresses the lead packing 7 at which time the rubber is swelled out to thoroughly pack the lower end of the hole.

The advantages of my invention result from IOO ble connection, the casing or tubing, &c., may

be varied widely without departing from my invention, since I consider myself the iirst to use a frangible connection between casing or tubing and the packing device.

I claiml. A deep-well casing or tubing,and a packer connected thereto by a frangible joint; substantially as described.

2. A casing or tubing having a packer connected thereto by a frangible joint, and an inner sealing-gasket for the casing; substantially as described.

3. A casing or tubing having a telescopic connection with a packer, the connection being held against movement by a frangible joint arranged to be severed by the weight of the casing; substantially as described.

4. A packer for deep wells having an eX- pansible gasket, an expanding device therefor,

and a frangible connection between the packer and the expanding device; substantially as described.

5. A packer having an annular expansible gasket, an expanding-shoe, and a frangible connection forming the sole connection between the shoe and the packer, the shoe being arranged to expand the gasket when theconnection is broken; substantially as described.

6. A casing or tubing having a packer secured thereto by a frangible connection, an inner sealing-gasket, and a telescopic connection arranged to engage and compress the inner gasket when the frangible connection is broken; substantially as described.

7. A deep-well packer having a easing, an annular gasket surrounding the casing with its lower end ilush with the bottom end of the packer, both resting upon the bottom of a hole, and a shoulder on the casing bearing upon the lat top edge of the gasket, whereby the gasket aids in holding the weight of the cas-l ing; substantially as described.

ln testimony whereof I have hereunto set my hand.

CHARLES M. HEETER.

Witnesses:

Guo. B. BLEMING, JOHN MILLER.

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