US904202A - Well-packer. - Google Patents

Description

:GOLON L o. HEETER, OF BUTLER, PENNSYLVANIA.

WELL-PACER.

Specification of Letters Patent.

Patented Nov. 17, 1908.

Application filed January 25, 1907, Serial No. 354,046. Renewed April 'l, 1908. Serial No. $25,795.

To all whom it my concern:

-Be it known that I, COLONEL C. HEETER, a

citizen of the United States, residing at Butwall operates in conjunction with an abutment'throu'gh which-the packer-tube is movor pressure.

able for expanding the packer, and-the primary object is to provide improved means for settingthe anchor.

A further purpose is to provide a yielding support for the anchor which may give while the anchor is being' set and prevent inury thereto in the event-of excessive strains In the accompanying drawing, Figure 1 is a View, partly in elevation and partly in section, of the improved packer, showing the position of the parts while being lowered in a well. Fig. 2 is a longitudinally sectional view, showing the position of the parts while setting the anchor, and 'Fig. 3 is a similar ongitudinally within the sleeve.

there y preventing view-of the packer when set.

Referring to the drawing-'2 designates the packer-tube or body having at its upper end the usual collar 3 for uniting with'casing 4, and beneath the collar is the packer or rubber annulus 5. Loose on tube 2, at the lower end of annul'us 5, is a two-part abutment consisting of inner sleeve 6, againstfwhich the'packerbears and which fits within an outer sleeve .7, bein cdnnected thereto by coarse threads. 8. ube .2 may be formed with onor more-longitudinal slots 9 to re; ceive ins 10 projecting from sleeve 6, where-'. by, w ile .said parts are held against indeendent rotation, the tube is freelto move Sprin 11 carried by outer sleeve 7 im inge the wel wall and preventsaid tube. rom rotating. A shoulder 12, at the up r end ofsleeve 7 enga es pin 12 projecting from sleeve 6,

the sleeves-from becoming screwed, tbget er so;tightl as to resist separation when settin the pee er inmanner presentlyto be descri ed. A collar 13 carried by the lower end of tube 2 forms a-stop for s ring 14, and resting on the latteris the annu ar slip-carrier 15 loose on the tube. Projecting upward from. the; carrier are vented-from rotating by springs 11, the r0- tary movement results in the distention of the thread-connected two-partabutment, as shown-in Fig. 2, the immediate result being the forcing downward of sleeve 7 thereby engaging the tapered lower end 7 thereof withslip's l7, and forcing the latter outward into tight cont-actwith-the wall. If this expandingmovement is carried too far, or if the rock-wall is extremely hard and unyielding, spring 14.- permits the slips to move a downward slightly under the excessive pressure, thereby preventing the slips, sleeve 7 or other parts of the packer from being injuredv by the undue strain. After the packer-has been set in the manner described, and as shown in. Fig. 2, the support for the casing at the top of the well is removed, and the weight of the casing forces tube-2 downward,

thereby compressing the rubber annulus between collar 3 and the anchored abutment and laterally expanding the packer and sealing the well, as shown in Fig. 3. The packer I may. be released by rotating the same throughthe medium of the casing in direction reverse to-that in which it was turned when being set, thereby contracting the twopart abutment by drawing upward sleeve 7 and releasing slips' 17. T e. casing and tubing 2 are then drawn upward, permitting the rubber to resume its normal shape, with the entire device free to be either raised or lowered, when itmay be reset; at a 'difierent point by, repeating the above described setting operation, or removed from the well.

I claim 1. The combination of a tube, an expan-v sible packer thereon, a longitudinally extensible abutment for the .lower end of the" packer and through which the tube is adapt edto move, and an anchor beneath the abut ment and adaptedto be engaged and set by .the latter while being longitudinally extended.

2.'The combination of. a tube, an expansible packer thereon, a longitudinally extensible two-partabutment for the lower end of the packer through which the tube-is movable, the abutment parts fitting one within the other andunited by screw-threads,liold- 'ing means adapted-to prevent the outer abutment part from rotating, and an anchor adapted to be en aged and set by said outer part when the a utment is extended longitudinally by rotating its inner part.

3. The combination of a tube, an expansibl packer thereon, a longitudinally extenslbletwo-part abutment, sald parts. fitting one within the other-and united by screw-c threads, a longitudinally movable connection between thetube and the'inner part of the abutment adapted to prevent the tube and said part from turning independently of each other, wall-engaging springs carried by .the outer abutment-part for preventing rotation of the latter, and an anchor adapted to be engaged and set by said outer part when the abutment is extended longitudinally by' rotating its inner part.

4. The combination of a tube, anexpansible packer thereon, an abutment for the lower end of the acker through which the tube is movable, t e abutment consisting of two sleeves movable one within the other and united by screw-threads, a pin and'slot connection between the tube and inner sleeve to aflord the tube longitudinal movement through the sleeve, the outer sleeve having its lower end tapered means carried by the outer sleeve for resisting rotation, and

. wedge-shaped slips movable on the tube and adapted to be engaged and expanded by. the tapered lower end of the outer sleeve.

5. The'combination of a tube, an expansible packer thereon, two sleevesone within and threaded to the 'otller through which the tube is movable, a connection between the tube and inner sleeve for causing said parts to turn together, holding means for preventing turning of the outer sleeve, stop G. H. HEETER, JAMES O. CAMPBEL J

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