TV is established method for guidelineless reentry of ocean-floor wellbore

Journal Article · Mon May 28 00:00:00 EDT 1984 · Oil Gas J.; (United States)

OSTI ID:6569951

Warriner, R A; Mace, W D

This article discusses the equipment and procedures used in deepwater drilling operations for reentering an ocean-floor wellbore with bits, casing, or other tools and connecting or reconnecting a BOP stack to the wellhead. All of these will be referred to as reentry operations. Reentry with dynamically positioned drilling vessels utilizes guidelineless equipment and procedures in contrast to the conventional wire-rope guide lines used with moored vessels. Guide lines are not used with DP vessels because of the difficulties in reestablishing the guide lines in the event of a drive-off causing lines to be broken or dropped. Guidelineless reentry operations generally involve using TV or sonar (or a combination) to locate the wellbore on the seafloor, followed by maneuvering the vessel with the DP system to position the equipment directly over the wellbore, then lowering the equipment into the wellbore. Actual reentry is usually observed with TV.

• Research Organization: Triton Engineering Services Co., Houston, TX
• OSTI ID: 6569951
• Journal Information: Oil Gas J.; (United States), Vol. 82:22
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
03 NATURAL GAS
NATURAL GAS WELLS
REENTRY
REMOTE VIEWING EQUIPMENT
OIL WELLS
DRILL BITS
DRILLING RIGS
OFFSHORE SITES
SEA BED
SONAR
TELEVISION
WELL CASINGS
WELL DRILLING
DRILLING
DRILLING EQUIPMENT
EQUIPMENT
MEASURING INSTRUMENTS
RANGE FINDERS
WELLS
020300* - Petroleum- Drilling & Production
030300 - Natural Gas- Drilling
Production
& Processing