Downhole tool with compression chamber
This patent describes a downhole tool apparatus, comprising: a housing, having a compression chamber defined therein. The housing has a fill passage means disposed through the housing for placing the compression chamber in open flow fluid communication with a well annulus exterior of the housing so that well fluid may flow into the compression chamber as the apparatus is lowered into a well. A method is described of operating a downhole tool, the method comprising the steps of: (a) providing in the tool an operating element, an actuating piston operatively associated with the operating element, and a compression chamber defined within the tool and communicated with a first side of the actuating piston. A majority of a total volume of the compression chamber is a diametrically irregular elongated annular space defined between interconnected tubular outer housing sections and interconnected tubular inner housing sections of the tool; (b) lowering the tool, connected to a tubing string, to a desired location in a well; (c) during the step (b), providing open flow fluid communication through a fill passage between the compression chamber and a well annulus defined between the tubing string and a well bore of the well; (d) during the step (b), flowing well fluid through the fill passage into the compression chamber so that the well fluid directly contacts as a gas-well fluid interface, a volume of gas contained in the compression chamber; and (e) during the step (d) moving the gas-well fluid interface upward past a plurality of diametrically irregular surfaces defining the diametrically irregular elongated annular space or the compression chamber.
- Assignee:
- Halliburton Co., Duncan, OK
- Patent Number(s):
- US 4617999
- OSTI ID:
- 7256284
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
020300* -- Petroleum-- Drilling & Production
ANNULAR SPACE
COMPRESSION
COMPRESSORS
CONFIGURATION
CONTROL EQUIPMENT
DRILL PIPES
DRILLING EQUIPMENT
ENHANCED RECOVERY
EQUIPMENT
FIELD PRODUCTION EQUIPMENT
FLOW REGULATORS
FLUID FLOW
FLUID INJECTION
FLUIDS
GAS INJECTION
HOISTING
MATERIALS HANDLING
OIL WELLS
PIPES
PISTONS
PRESSURIZING
RECOVERY
RESERVOIR FLUIDS
SPACE
STIMULATION
VALVES
WELL INJECTION EQUIPMENT
WELL STIMULATION
WELLS