Method and apparatus for removing excess water from subterranean wells
A method is described of removing water from a subterranean hydrocarbon formation comprising the steps of: drilling a well through the hydrocarbon producing formation and downwardly to a water absorbing formation; running a casing string into the well through the hydrocarbon formation and downwardly to the water absorbing formation; perforating the casing at a plurality of vertically spaced locations adjacent the hydrocarbon producing formation; assembling a tool string including from the bottom up a tubular portion including a one-way flow valve, a tubing inlet port, a first blanking plug, a lower packer sealingly secured to the tubular portion; a fluid pump having a casing-tubing annulus intake and an output port, a pump output conduit communicating between the pump output and the tubing inlet port, a second blanking plug, a perforated nipple, and an upper packer spaced above the second blanking plug and above the casing perforations; running the assembled tool string into the well to position the lower packer below the casing perforations and the upper packer above the casing perforations; setting the packers; and operating the pump to force fluid in the casing annulus below the casing perforations downwardly through the lower packer and the one-way flow valve to the water absorbing formation.
- Assignee:
- NOV; NOV-88-030077; EDB-89-000716
- Patent Number(s):
- US 4766957
- OSTI ID:
- 6981185
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
CONTROL EQUIPMENT
DESIGN
EQUIPMENT
FIELD PRODUCTION EQUIPMENT
FLOW REGULATORS
FLUIDS
GROUND WATER
HYDROGEN COMPOUNDS
INTERSTITIAL WATER
NATURAL GAS WELLS
OIL WELLS
OXYGEN COMPOUNDS
PUMPING
REMOVAL
RESERVOIR FLUIDS
RESERVOIR ROCK
VALVES
WATER
WATER REMOVAL
WELL RECOVERY EQUIPMENT
WELLS