Retrievable well bore assembly

Patent · Mon Mar 02 23:00:00 EST 1987

OSTI ID:6738840

Arnold, R D; Baker, S; Goodman, B R

A method is described of setting and retrieving with a well string including a releasable coupling which supports a retrievable insert landing assembly having connecting means and seal means for engaging with the seal bore in a well bore tubular member having an internal left-hand threaded portion. The method comprises: lowering the well string and coupling tool connected with the retrievable insert landing assembly into the well bore until the landing assembly seal means is sealingly received in the seal bore of the tubular member; manipulating the well string to secure the connecting means and retrievable insert landing assembly with the left-hand threaded portion on the tubular member; and maintaining the connecting means and retrievable insert landing assembly secured with the left-hand threaded portion on the tubular member while uncoupling the well string from the retrievable insert landing assembly and while maintaining the well string and retrievable insert landing assembly interconnected to provide a sliding seal therebetween and capable of recoupling for retrieval of the insert landing assembly. In a retrievable landing assembly for lowering on a well string for use in a well bore tubular member having a seal bore and an internal left-hand threaded portion, the invention is described including; a tubular mandrel; seal means on the tubular mandrel for sealably engaging with the seal bore in the tubular mandrel; and connecting means supported by the mandrel for connecting with the left-hand threaded portion of the tubular member.

• Assignee: Texas Iron Works, Inc., Houston, TX
• Patent Number(s): US 4646842
• OSTI ID: 6738840
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
42 ENGINEERING
420206 -- Engineering-- Mining & Drilling Equipment & Facilities-- (1980-1989)
CONDUCTOR DEVICES
CONNECTORS
DRILL BITS
DRILL PIPES
DRILLING EQUIPMENT
ELECTRICAL EQUIPMENT
EQUIPMENT
HOISTING
HOISTS
MATERIALS HANDLING
MATERIALS HANDLING EQUIPMENT
MECHANICAL STRUCTURES
NATURAL GAS WELLS
OIL WELLS
PIPES
SEALS
SUPPORTS
WELLS