A combined perforating and well testing system

Conference · Tue Jan 01 00:00:00 EST 1985

OSTI ID:5604085

Westaway, P J; El Shafie, I; Wittman, M J

Underbalanced perforating is widely used in well completions and is considered by many operators to be an effective method of obtaining improved well productivity. A measurement of downhole pressure before, during and after perforating can be made by installing a pressure gauge on the gun-string. By using a wireline, the added capability of real-time read-out on surface allows the entire operation to be monitored 'live.' Correct underbalance can be accurately established prior to shooting, there is an unambiguous shot indication, and a pressure transient analysis can be made during the initial flow or fill-up period. From this we can obtain an estimate of permeability, skin damage and, possibly, static reservoir pressure, which is a useful supplement to the shut-in buildup analysis which usually follows if flow reaches surface. Any subsequent conventional well-test can of course be planned without the need to retrieve or run in additional equipment since the pressure gauge is already in place.

• OSTI ID: 5604085
• Report Number(s): CONF-8511174-
• Resource Relation: Conference: SPE production technology symposium, Lubbock, TX, USA, 11 Nov 1985
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
03 NATURAL GAS
NATURAL GAS WELLS
PERFORATION
PRESSURE MEASUREMENT
WELL COMPLETION
OIL WELLS
DATA ANALYSIS
DRILL PIPES
FLOW RATE
FORMATION DAMAGE
LEADING ABSTRACT
MEETINGS
MONITORING
PERMEABILITY
PRESSURE GAGES
PRODUCTION
READOUT SYSTEMS
REAL TIME SYSTEMS
WELL LOGGING
WELL PRESSURE
ABSTRACTS
DOCUMENT TYPES
DRILLING EQUIPMENT
EQUIPMENT
MEASURING INSTRUMENTS
PIPES
RESERVOIR PRESSURE
WELLS
020300* - Petroleum- Drilling & Production
030300 - Natural Gas- Drilling
Production
& Processing
020200 - Petroleum- Reserves
Geology
& Exploration
030200 - Natural Gas- Reserves
Geology
& Exploration