Method and apparatus for completing well
A method is described for the completion of a well comprising: drilling a first well hole and providing the first well hole with at least a first casing to a predetermined depth; drilling a second well hole having a smaller diameter than the first well hole to a pay zone at which quantities of gas are encountered; providing a second casing positioned within the first casing, forming a first annular space between the first and second casings and extending the second casing into the second well hole; the second casing having an outer diameter less than the diameter of the second well hole and forming a second annular space between the second casing and the second well hole; sealing the interior of the second casing by providing a seal space from the wall of the second well hole and positioned within the well in the interior of the second casing; positioning tubing within the second casing in a position entirely above the seal while the gas is flowing through the second and the first annular spaces, forming a third annular space between the second casing and the tubing; forming an opening in the casing within the well above the seal in the interior of the second casing; allowing the gas from the pay zone to enter into the tubing using the opening in the second casing; providing a flowable sealing material in the second annular space; and preventing the flowable sealing material from being located laterally adjacent to the pay zone from which the gas is to be received.
- Assignee:
- NOV; NOV-85-020277; EDB-86-162486
- Patent Number(s):
- US 4605067
- OSTI ID:
- 5375791
- Resource Relation:
- Patent File Date: Filed date 26 Mar 1984
- Country of Publication:
- United States
- Language:
- English
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03 NATURAL GAS
NATURAL GAS WELLS
WELL CASINGS
WELL COMPLETION
OIL WELLS
ANNULAR SPACE
DEPTH
FLOW BLOCKAGE
GAS FLOW
POSITIONING
SEALING MATERIALS
SEALS
WELL DRILLING
CONFIGURATION
DIMENSIONS
DRILLING
FLUID FLOW
MATERIALS
SPACE
WELLS
020300* - Petroleum- Drilling & Production
030300 - Natural Gas- Drilling
Production
& Processing