Side entry sub well logging apparatus and method

Patent · Tue Dec 05 04:00:00 EST 1989

OSTI ID:7017863

Rankin, E E

This patent describes in a well logging system in which conductor cable extends outside of a drill string assembled of drill pipe and side entry sub, the cable entering into a sidewall passage of the side entry sub and extending through the drill pipe to a logging instrument located at the lower end of the drill string, an apparatus for releasing the side entry sub from the drill string in the event the drill string becomes stuck. The apparatus comprising: a release sub having a telescoping joinder means connecting to the drill string below the side entry sub and means for releasably latching the side entry sub to the release sub serially with the drill string. The latching means releasing the side entry sub from the release sub without rotation to enable the side entry sub to be pulled upwardly from the drill string.

• Assignee: Halliburton Logging Services, Inc., Houston, TX
• Patent Number(s): US 4884632; A
• Application Number: PPN: US 7-216580A
• OSTI ID: 7017863
• 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
CABLES
CONDUCTOR DEVICES
DESIGN
DRILL PIPES
DRILLING EQUIPMENT
ELECTRIC CABLES
ELECTRICAL EQUIPMENT
EQUIPMENT
EXPLORATORY WELLS
GEOLOGIC DEPOSITS
MINERAL RESOURCES
NATURAL GAS DEPOSITS
PETROLEUM DEPOSITS
PIPES
RESOURCES
WELL LOGGING
WELL LOGGING EQUIPMENT
WELLS