United States Patent [191
[11] [45]
George et al. [54]
APPARATUS FOR WELL COMPLETION
OPERATIONS Flint R. George, Katy; Bennie C. Gill, Inventors: [75] Missouri City; David M. Haugen, Houston, all of Tex. [73] Assignee: Halliburton Company, Duncan, Okla. [21] Appl. No.: 921,802 Oct. 20, 1986 [22] Filed:
[63]
Continuation of Ser. No. 770,502, Aug. 27, 1985, aban
[51] [52]
Int. Cl.4 ............................................ .. E21B 23/06
[58]
Field of Search ............. .. 166/123, 124, 125, 143,
doned. US. Cl. .................................. .. 166/123; 166/144;
166/182
166/144, 152, 181, 182, 189
4,526,229 7/ 1985
4,545,431 10/1985 4,572,290 2/1986
Barker ............................... .. 166/123 Pitts
........ ....
. . . . . . . ..
166/125
Dickerson t.
....... ..
166/182
Fore
...............
Jan. 5, 1988
Primary Examiner-Stephen J. Novosad Assistant Examiner-Terry Lee Melius Attorney, Agent, or Firm-James R. Duzan
[57]
ABSTRACT
Methods and apparatus are provided for setting a packer and for placing a seal assembly into the packer bore on a single trip into the borehole. Such apparatus includes a releasable mechanism coupling the seal as sembly in ?xed relation to the packer until such time as
the packer is at least partially set. Methods and appara
for hydraulically setting a packer without any manipu lation of the tubing string. A pair of hydraulic pistons are utilized to move in opposite directions and exert forces on both a packer actuating sleeve and the packer body to set the packer. Methods and apparatus are pro vided for actuating well tools in response to the hydro static pressure in the well. Through use of such appara tus, a chamber at atmospheric pressure is placed in communication with one side of a hydraulically mov
References Cited U.S. PATENT DOCUMENTS 4,436,150 3/1984 4,516,634 5/1985
4,716,963
tus of the present invention also include a mechanism
Related US. Application Data
[56]
Patent Number: Date of Patent:
. . . ..
166/123
Clifton .............................. ..
166/125
able member, the other side of which is exposed to hydrostatic pressure. The low pressure of the atmo spheric chamber causes movement of the member to operate the well tool.
9 Claims, 49 Drawing Figures
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