System for determining the free point of pipe stuck in a borehole
Patent
·
OSTI ID:5701227
A method for detecting the location at which a ferromagnetic pipe string is stuck within a borehole comprising the steps of: passing a wireline tool through the pipe string; stressing and unstressing the pipe string above the stuck location while the wireline tool is being passed through the aid pipe string; measuring a stressed magnetic permeability of the walls of each of two sections of the pipe string while the pipe string is stressed; measuring an unstressed magnetic permeability of the walls of the sections while the pipe string is unstressed; comparing the stressed and unstressed magnetic permeabilities for the sections.
- Assignee:
- NL Industries, Inc., New York, NY
- Patent Number(s):
- US 4708204
- OSTI ID:
- 5701227
- Country of Publication:
- United States
- Language:
- English
Similar Records
Anchoring apparatus for tools used in determining the stuck point of a conduit in a borehole
Down hole excitation system for loosening drill pipe stuck in a well
Stuck pipe is not inevitable. [Task force recommendations to minimize sticking of drill pipes in boreholes]
Patent
·
Mon Jan 21 23:00:00 EST 1980
·
OSTI ID:5753929
Down hole excitation system for loosening drill pipe stuck in a well
Patent
·
Tue May 26 00:00:00 EDT 1987
·
OSTI ID:6382159
Stuck pipe is not inevitable. [Task force recommendations to minimize sticking of drill pipes in boreholes]
Journal Article
·
Thu Sep 01 00:00:00 EDT 1994
· Petroleum Engineer International; (United States)
·
OSTI ID:7090378
Related Subjects
02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
DESIGN
DRILL PIPES
DRILLING EQUIPMENT
ELECTROMAGNETIC FIELDS
EQUIPMENT
FAILURES
MAGNETIC PROPERTIES
MAGNETIC SUSCEPTIBILITY
MAGNETIC TESTING
MATERIALS TESTING
MEASURING INSTRUMENTS
MEASURING METHODS
MONITORING
MONITORS
NATURAL GAS WELLS
NONDESTRUCTIVE TESTING
OIL WELLS
PHYSICAL PROPERTIES
PIPES
TESTING
WELLS
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
DESIGN
DRILL PIPES
DRILLING EQUIPMENT
ELECTROMAGNETIC FIELDS
EQUIPMENT
FAILURES
MAGNETIC PROPERTIES
MAGNETIC SUSCEPTIBILITY
MAGNETIC TESTING
MATERIALS TESTING
MEASURING INSTRUMENTS
MEASURING METHODS
MONITORING
MONITORS
NATURAL GAS WELLS
NONDESTRUCTIVE TESTING
OIL WELLS
PHYSICAL PROPERTIES
PIPES
TESTING
WELLS