High differential pressure, radial flow characteristics of gun perforations
Tubing conveyed completion techniques are being utilized more frequently than in the past, because of the apparent advantages derived from underbalanced perforating. These advantages include cleaner perforations, reductions of additional stimulation treatments and reduced completion times. This paper presents the results of a laboratory study of gun perforations made under high differential pressure, radial flow conditions. In this study, Berea sandstone cores, modified to permit radial flow, are used to determine the relationship between perforation characteristics and the time-dependent pressure differential between pore pressure (i.e. formation pressure) and ''well bore'' pressure during the completion process. The primary perforation characteristic investigated (Radial Flow Ratio) is defined as the ratio of the perforated flow rate to the flow rate of the unperforated core under identical conditions. The perforated flow rate is measured in radial flow after the perforation has been made under various time-dependent pressure differentials.
- OSTI ID:
- 5433184
- Report Number(s):
- CONF-850941-
- Resource Relation:
- Conference: European offshore conference, Aberdeen, UK, 10 Sep 1985
- Country of Publication:
- United States
- Language:
- English
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Laboratory flow characteristics of gun perforations
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03 NATURAL GAS
NATURAL GAS WELLS
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OIL WELLS
BENCH-SCALE EXPERIMENTS
DRILL CORES
EXPERIMENTAL DATA
FLOW RATE
FLUID FLOW
GUNS
PRESSURE EFFECTS
RESERVOIR PRESSURE
SANDSTONES
TIME DEPENDENCE
WELL COMPLETION
WELL PRESSURE
WELL STIMULATION
DATA
INFORMATION
NUMERICAL DATA
ROCKS
SEDIMENTARY ROCKS
STIMULATION
WELLS
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