Inventor
A. Glen Edwards
Inventor
Hockley, TX, US
Overview
Patents· 35 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
E21Bprimary
E21BEarth or rock drilling94%
F42BExplosive charges, e.g. for blasting, fireworks, ammunition3%
Y10TTechnical subjects covered by former us classification3%
PatentTitleYear
7,147,060'Method, system and apparatus for orienting casing and liners'20067,000,699'Method and apparatus for orienting perforating devices and confirming their orientation'20066,354,374'Method of performing downhole functions'20026,213,203'Lock mechanism for use with a downhole device'20016,182,750'Device for performing downhole functions'20016,123,152'Retrieving well tools under pressure'20006,102,126'Pressure-actuated circulation valve'20006,085,843'Mechanical shut-off valve'20006,059,042'Completions insertion and retrieval under pressure (CIRP) apparatus including the snaplock connector'20005,979,561'Downhole activation circuit valving'19995,964,294'Apparatus and method for orienting a downhole tool in a horizontal or deviated well'19995,890,539'Tubing-conveyer multiple firing head system'19995,887,654'Method for performing downhole functions'19995,848,646'Well completion apparatus for use under pressure and method of using same'19985,505,261'Firing head connected between a coiled tubing and a perforating gun adapted to move freely within a tubing string and actuated by fluid pressure in the coiled tubing'19965,429,192'Method and apparatus for anchoring a perforating gun to a casing in a wellbore including a primary and a secondary anchor release mechanism'19955,366,013'Shock absorber for use in a wellbore including a frangible breakup element preventing shock absorption before shattering allowing shock absorption after shattering'19945,318,126'Explosively opened production valve including a frangible breakup element operated by tubing pressure or rathole pressure or both'19945,277,262'Hydraulic safety pin and method of operating a pressure-controlled device'19945,203,414'Method of anchoring a device in a wellbore including opening an orifice between two chambers in response to an electrical signal and moving a piston in response to hydrostatic pressure when the orifice is opened'19935,191,936'Method and apparatus for controlling a well tool suspended by a cable in a wellbore by selective axial movements of the cable'19935,191,933'Wellbore apparatus including a rathole pressure balanced-differential pressure firing system'19935,156,207'Hydraulically actuated downhole valve apparatus'19925,146,983'Hydrostatic setting tool including a selectively operable apparatus initially blocking an orifice disposed between two chambers and opening in response to a signal'19925,095,993'Anchor apparatus for a tubing and wireline conveyed method and apparatus'19925,088,413'Method and apparatus for safe transport handling arming and firing of perforating guns using a bubble activated detonator'19925,058,680'Method of detonating a perforating apparatus on a tubing including lowering one end of a pump and a firing head into said tubing'19915,050,672'Pump apparatus including a firing head for use with a perforating gun on a tubing string'19915,050,682'Coupling apparatus for a tubing and wireline conveyed method and apparatus'19915,040,597'Well apparatus including a pump and a firing head adapted to be inserted into a tubing which includes a perforating gun'19915,025,861'Tubing and wireline conveyed perforating method and apparatus'19914,817,710'Apparatus for absorbing shock'19894,693,317'Method and apparatus for absorbing shock'19874,658,902'Surging fluids downhole in an earth borehole'19874,436,149'Hydraulic setting tool'1984Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1984–1992Patents assigned to HALLIBURTON CO (5)· patent assignee history
1984Based in Duncan, OK, US· patent location history
1987–2006Based in Hockley, TX, US· patent location history
1991–2006Patents assigned to SCHLUMBERGER TECHNOLOGY CORP (30)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| SCHLUMBERGER TECHNOLOGY CORP | 30 | 1991–2006 |
| HALLIBURTON CO | 5 | 1984–1992 |
Locations
| Location | Patents | Span |
|---|---|---|
| Hockley, Texas, US | 34 | 1987–2006 |
| Duncan, OK, US | 1 | 1984 |