Inventor · disambiguated record
James M. Upchurch
Also filed as: UPCHURCH JAMES M
20 granted patents·1,696 citations·filing 1976–1997
97Inventor score
Technology areasE21B
Files withSCHLUMBERGER TECHNOLOGY CORP20
Top patents by PatentIndex Score
20 records- 0197US4915168AMultiple well tool control systems in a multi-valve well testing systemSCHLUMBERGER TECHNOLOGY CORP·Filed 1989·Granted Apr 10, 1990·158 cites·27 claims
- 0297US4896722AMultiple well tool control systems in a multi-valve well testing system having automatic control modesSCHLUMBERGER TECHNOLOGY CORP·Filed 1989·Granted Jan 30, 1990·170 cites·13 claims
- 0397US4796699AWell tool control system and methodSCHLUMBERGER TECHNOLOGY CORP·Filed 1988·Granted Jan 10, 1989·217 cites·44 claims
- 0497US4403659APressure controlled reversing valveSCHLUMBERGER TECHNOLOGY CORP·Filed 1981·Granted Sep 13, 1983·177 cites·17 claims
- 0596US4856595AWell tool control system and methodSCHLUMBERGER TECHNOLOGY CORP·Filed 1988·Granted Aug 15, 1989·148 cites·25 claims
- 0693US4576234AFull bore sampler valveSCHLUMBERGER TECHNOLOGY CORP·Filed 1985·Granted Mar 18, 1986·122 cites·14 claims
- 0790US4971160APerforating and testing apparatus including a microprocessor implemented control system responsive to an output from an inductive coupler or other input stimulusSCHLUMBERGER TECHNOLOGY CORP·Filed 1989·Granted Nov 20, 1990·95 cites·13 claims
- 0889US4320800AInflatable packer drill stem testing systemSCHLUMBERGER TECHNOLOGY CORP·Filed 1979·Granted Mar 23, 1982·68 cites·20 claims
- 0988US4553428ADrill stem testing apparatus with multiple pressure sensing portsSCHLUMBERGER TECHNOLOGY CORP·Filed 1983·Granted Nov 19, 1985·73 cites·12 claims
- 1085US5050675APerforating and testing apparatus including a microprocessor implemented control system responsive to an output from an inductive coupler or other input stimulusSCHLUMBERGER TECHNOLOGY CORP·Filed 1990·Granted Sep 24, 1991·93 cites·6 claims
- 1183US4509604APressure responsive perforating and testing systemSCHLUMBERGER TECHNOLOGY CORP·Filed 1982·Granted Apr 9, 1985·57 cites·9 claims
- 1279US4609005ATubing isolation disc valveSCHLUMBERGER TECHNOLOGY CORP·Filed 1985·Granted Sep 2, 1986·58 cites·4 claims
- 1376US5058673AHydraulically set packer useful with independently set straddle packers including an inflate/deflate valve and a hydraulic ratchet associated with the straddle packersSCHLUMBERGER TECHNOLOGY CORP·Filed 1990·Granted Oct 22, 1991·62 cites·24 claims
- 1472USRE39583EMultiple well tool control systems in a multi-valve well testing system having automatic control modesSCHLUMBERGER TECHNOLOGY CORP·Filed 1997·Granted Apr 24, 2007·52 cites·45 claims
- 1572US4474242AAnnulus pressure controlled reversing valveSCHLUMBERGER TECHNOLOGY CORP·Filed 1981·Granted Oct 2, 1984·38 cites·17 claims
- 1671US4560000APressure-activated well perforating apparatusSCHLUMBERGER TECHNOLOGY CORP·Filed 1983·Granted Dec 24, 1985·37 cites·10 claims
- 1763US4633945APermanent completion tubing conveyed perforating systemSCHLUMBERGER TECHNOLOGY CORP·Filed 1984·Granted Jan 6, 1987·27 cites·1 claims
- 1863US4553598AFull bore sampler valve apparatusSCHLUMBERGER TECHNOLOGY CORP·Filed 1984·Granted Nov 19, 1985·28 cites·13 claims
- 1951US4069866APressure apportioning valve apparatus for use with multiple packersSCHLUMBERGER TECHNOLOGY CORP·Filed 1976·Granted Jan 24, 1978·15 cites·15 claims
- 2030US4923010AMud solids immune clean fluid compensating systemSCHLUMBERGER TECHNOLOGY CORP·Filed 1989·Granted May 8, 1990·1 cites·13 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →