Coiled-tubing logging system

Conference · Wed Jan 01 04:00:00 EST 1986

OSTI ID:7200627

Howell, E P; Smith, L J; Blount, C G

Techniques have been developed which use coiled tubing containing a seven-conductor wireline to facilitate logging operations. Equipment has been designed which permits the connection of conventional logging tools to the tubing and the recording of logs. Also, operating techniques have been developed and applied under various wellbore conditions. The system allows traditional log measurements in a well while controlling wellbore conditions. Advantages of the system include: reduced wellbore pressure during perforation to minimize formation damage: lubrication while pulling or pushing a logging tool through a borehole so that a more uniform velocity can be maintained with a logging sonde; continued circulation and thus borehole stability while logging; temperature reduction for improved reliability of logging sonde electronics in hot holes; and more stable positioning of perforation equipment. The ability of coiled tubing to push tools down highly deviated, or even horizontal wellbores, makes logging or perforating feasible in these wells. Expenses can often be reduced with coiled-tubing logging, since a rig is unnecessary during many operations.

• Research Organization: ARCO Alaska Inc.
• OSTI ID: 7200627
• Report Number(s): CONF-861080-
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020200* -- Petroleum-- Reserves
Geology
& Exploration
03 NATURAL GAS
030200 -- Natural Gas-- Reserves
Geology
& Exploration
BOREHOLES
CAVITIES
COST
DESIGN
EQUIPMENT
FEASIBILITY STUDIES
FORMATION DAMAGE
GEOLOGIC DEPOSITS
LUBRICATION
MINERAL RESOURCES
NATURAL GAS DEPOSITS
OPERATING COST
OPERATION
PERFORATION
PETROLEUM DEPOSITS
RELIABILITY
RESERVOIR PRESSURE
RESERVOIR TEMPERATURE
RESOURCES
STABILITY
TUBES
VELOCITY
WELL LOGGING
WELL TEMPERATURE