Dwayne D. Leismer

Person

Pearland, TX, US

People

Patents Grantslast 30 patents

Information Patent Grant
Control line cutting tool and method
- Patent number 6,789,627
- Issue date Sep 14, 2004
- Schlumberger Technology Corporation
- Dwayne D. Leismer
- E21 - EARTH DRILLING MINING
Information Patent Grant
Apparatus and method for completing a junction of plural wellbores
- Patent number 6,732,801
- Issue date May 11, 2004
- Schlumberger Technology Corporation
- Herve Ohmer
- E21 - EARTH DRILLING MINING
Information Patent Grant
Apparatus and method for spacing out of offshore wells
- Patent number 6,712,149
- Issue date Mar 30, 2004
- Schlumberger Technology Corporation
- Dwayne D. Leismer
- E21 - EARTH DRILLING MINING
Information Patent Grant
Downhole multiplexer and related methods
- Patent number 6,491,102
- Issue date Dec 10, 2002
- Camco International Inc.
- Dwayne D. Leismer
- E21 - EARTH DRILLING MINING
Information Patent Grant
Controlling activation of devices
- Patent number 6,433,991
- Issue date Aug 13, 2002
- Schlumberger Technology Corp.
- Thomas M. Deaton
- E21 - EARTH DRILLING MINING
Information Patent Grant
Wellbore flow control device
- Patent number 6,308,783
- Issue date Oct 30, 2001
- Schlumberger Technology Corporation
- Ronald E. Pringle
- E21 - EARTH DRILLING MINING
Information Patent Grant
Pilot-operated pressure-equalizing mechanism for subsurface valve
- Patent number 6,296,061
- Issue date Oct 2, 2001
- Camco International Inc.
- Dwayne D. Leismer
- E21 - EARTH DRILLING MINING
Information Patent Grant
Downhole multiplexer and related methods
- Patent number 6,247,536
- Issue date Jun 19, 2001
- Camco International Inc.
- Dwayne D. Leismer
- E21 - EARTH DRILLING MINING
Information Patent Grant
Apparatus for remote control of wellbore fluid flow
- Patent number 6,241,015
- Issue date Jun 5, 2001
- Camco International, Inc.
- Ronald E. Pringle
- E21 - EARTH DRILLING MINING
Information Patent Grant
Wellbore flow control device
- Patent number 6,237,683
- Issue date May 29, 2001
- Camco International Inc.
- Ronald E. Pringle
- E21 - EARTH DRILLING MINING
Information Patent Grant
Selective re-entry tool for multiple tubing completions and method...
- Patent number 6,209,649
- Issue date Apr 3, 2001
- Camco International, Inc.
- Ronald E. Pringle
- E21 - EARTH DRILLING MINING
Information Patent Grant
Emergency release tool
- Patent number 5,984,006
- Issue date Nov 16, 1999
- Camco International Inc.
- Dennis M. Read
- E21 - EARTH DRILLING MINING
Information Patent Grant
Expanded slip well anchor
- Patent number 5,348,090
- Issue date Sep 20, 1994
- Camco International Inc.
- Dwayne D. Leismer
- E21 - EARTH DRILLING MINING
Information Patent Grant
Emergency downhole disconnect tool
- Patent number 5,323,853
- Issue date Jun 28, 1994
- Camco International Inc.
- Dwayne D. Leismer
- E21 - EARTH DRILLING MINING
Information Patent Grant
Fail safe gas bias safety valve
- Patent number 5,310,004
- Issue date May 10, 1994
- Camco International Inc.
- Dwayne D. Leismer
- E21 - EARTH DRILLING MINING
Information Patent Grant
Selective hydraulic lock-out well safety valve and method
- Patent number 5,167,284
- Issue date Dec 1, 1992
- Camco International Inc.
- Dwayne D. Leismer
- E21 - EARTH DRILLING MINING
Information Patent Grant
Slip mechanism for a well tool
- Patent number 5,101,897
- Issue date Apr 7, 1992
- Camco International Inc.
- Dwayne D. Leismer
- E21 - EARTH DRILLING MINING
Information Patent Grant
Well tool hydrostatic release means
- Patent number 4,976,317
- Issue date Dec 11, 1990
- Camco International Inc.
- Dwayne D. Leismer
- E21 - EARTH DRILLING MINING
Information Patent Grant
Dual hydraulic safety valve
- Patent number 4,838,355
- Issue date Jun 13, 1989
- Camco, Incorporated
- Dwayne D. Leismer
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
Apparatus and method for completing a junction of plural wellbores
- Publication number 20020121375
- Publication date Sep 5, 2002
- Herve Ohmer
- E21 - EARTH DRILLING MINING
Information Patent Application
Apparatus and method for spacing out of offshore wells
- Publication number 20020096331
- Publication date Jul 25, 2002
- Dwayne D. Leismer
- E21 - EARTH DRILLING MINING
Information Patent Application
Downhole multiplexer and related methods
- Publication number 20020066574
- Publication date Jun 6, 2002
- Dwayne D. Leismer
- E21 - EARTH DRILLING MINING
Information Patent Application
Control line cutting tool and method
- Publication number 20010045283
- Publication date Nov 29, 2001
- Dwayne D. Leismer
- E21 - EARTH DRILLING MINING
Information Patent Application
Wellbore flow control device
- Publication number 20010015276
- Publication date Aug 23, 2001
- Ronald E. Pringle
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC

Dwayne D. Leismer

Person

Patents Grantslast 30 patents

Control line cutting tool and method

Apparatus and method for completing a junction of plural wellbores

Apparatus and method for spacing out of offshore wells

Downhole multiplexer and related methods

Controlling activation of devices

Wellbore flow control device

Pilot-operated pressure-equalizing mechanism for subsurface valve

Downhole multiplexer and related methods

Apparatus for remote control of wellbore fluid flow

Wellbore flow control device

Selective re-entry tool for multiple tubing completions and method...

Emergency release tool

Expanded slip well anchor

Emergency downhole disconnect tool

Fail safe gas bias safety valve

Selective hydraulic lock-out well safety valve and method

Slip mechanism for a well tool

Well tool hydrostatic release means

Dual hydraulic safety valve

Patents Applicationslast 30 patents

Apparatus and method for completing a junction of plural wellbores

Apparatus and method for spacing out of offshore wells

Downhole multiplexer and related methods

Control line cutting tool and method

Wellbore flow control device