1
Jeffryes Benjamin: System and method for drilling a borehole. Schlumberger Holdings, Schlumberger Canada, Schlumberger Technology, Services Petroliers Schlumberger, Jeffryes Benjamin, MIRZA Akram Karim, May 26, 2006: WO/2006/054079 (42 worldwide citation)

A system and method is provided for drilling a wellbore including a rotary drill bit with a bit body having a plurality of mechanical cutters to cut away formation material as the wellbore is formed; and a directed energy mechanism to direct energy into the formation such that energy from the direct ...


2
Robertsson Johan Olof Anders: Interpolation and extrapolation method for seismic recordings. Westerngeco Seismic Holdings, Westerngeco Canada, Services Petroliers Schlumberger, Westerngeco, Robertsson Johan Olof Anders, MIRZA Akram Karim, December 1, 2005: WO/2005/114258 (26 worldwide citation)

It is described a method of interpolating and extrapolating seismic recordings, including the steps of deriving particle velocity related data from seismic recordings obtained by at least one streamer carrying a plurality of multi-component receivers and using the particle velocity related data to r ...


3
Hughes Trevor Lloyd, Jones Timothy Gareth John, Regnault de La, Mothe Loic, Hartshorne Robert Seth, Pelham Sarah Elizabeth: Well bore treatment fluid. Schlumberger Technology, Sofitech, Schlumberger Canada, Schlumberger Holdings, Services Petroliers Schlumberger, Hughes Trevor Lloyd, Jones Timothy Gareth John, Regnault de La, Mothe Loic, Hartshorne Robert Seth, Pelham Sarah Elizabeth, MIRZA Akram Karim, April 21, 2005: WO/2005/035936 (20 worldwide citation)

A well bore treatment fluid and methods for selectively reducing the outflow of water during recovery of hydrocarbons from a hydrocarbon reservoir in a formation are described, wherein fluid contains 5 to 40 weight per cent of a dissolved compound based on &agr;-branched carboxylic acid, derivatives ...


4
Robertsson Johan Olof Anders: Three-dimensional deghosting. Westerngeco Seismic Holdings, Westerngeco Canada, Services Petroliers Schlumberger, Westerngeco, Robertsson Johan Olof Anders, MIRZA Akram Karim, December 22, 2005: WO/2005/121837 (9 worldwide citation)

The method presented accounts for three-dimensional effects when deghosting marine seismic data. The method relies on having second-order spatial derivatives in the cross-line direction available. The second-order cross-line derivative can be estimated directly or through indirect measurements of ot ...


5
Wood Rachel, Curtis Andrew, Kayser Andreas: Classification method for sedimentary rocks. Schlumberger Technology, Prad Research And Development, Schlumberger Canada, Schlumberger Holdings, Schlumberger Oilfield Assistance, Schlumberger Overseas, Schlumberger Seaco, Schlumberger Surenco, Services Petroliers Schlumberger, Wood Rachel, Curtis Andrew, Kayser Andreas, MIRZA Akram Karim, November 17, 2005: WO/2005/108965 (9 worldwide citation)

A method of determining a parameter of interest of reservoir rock formation is described using the steps of measuring an x-ray attenuation or absorption distribution of a sample of said rock formation, identifying the mineral phase part of said distribution, and subdividing the mineral phase part of ...


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Jones Timothy Gareth John, Jiang Li: Electro-chemical sensor. Schlumberger Technology, Prad Research And Development, Schlumberger Canada, Schlumberger Holding, Schlumberger Oilfield Assistance, Schlumberger Overseas, Schlumberger Seaco, Schlumberger Surenco, Services Petroliers Schlumberger, Jones Timothy Gareth John, Jiang Li, MIRZA Akram Karim, December 22, 2005: WO/2005/121779 (3 worldwide citation)

An electro-chemical sensor for methane is described having a catalyst to react methane or other low molecular weight hydrocarbons and a detector to detect the turnover or reaction rate and using such information to determine the concentration of the methane or other low molecular weight species. The ...


8
Jiang Li, Jones Timothy Gareth John: Optical ph sensor. Schlumberger Holdings, Schlumberger Canada, Schlumberger Technology, Services Petroliers Schlumberger, Jiang Li, Jones Timothy Gareth John, MIRZA Akram Karim, June 8, 2006: WO/2006/059097 (2 worldwide citation)

An optical sensor for pH is described using a cross-linked network of bisilanes to immobilize a pH sensitive chromophore to a surface potentially exposed to a high pressure, high temperature environment such as wellbore effluents at a downhole location.


9
Van, Manen Dirk Jan, Curtis Andrew, Robertsson Johan Olof Anders: Processing data representing energy propagating through a medium. Westerngeco Seismic Holdings, Westerngeco Canada, Van, Manen Dirk Jan, Curtis Andrew, Robertsson Johan Olof Anders, MIRZA Akram Karim, April 20, 2006: WO/2006/040521 (2 worldwide citation)

The present invention relates to a method of processing data representing energy propagating through a medium (e.g., acoustic, elastic or electromagnetic energy) and describes an efficient and flexible e approach to forward modeling and inversion of such energy for a given medium. The representation ...


10
Muyzert Everhard Johan, Martin James Edward, Laws Robert Montgomery, Christie Philip Andrew Felton: Marine seismic acquisition system. Westerngeco Seismic Holdings, Westerngeco Canada, Services Petroliers Schlumberger, Muyzert Everhard Johan, Martin James Edward, Laws Robert Montgomery, Christie Philip Andrew Felton, MIRZA Akram Karim, August 11, 2005: WO/2005/073758 (2 worldwide citation)

A marine cable for seismic surveys is described with a plurality of ceramic pressure sensors (901-904) arranged in groups of at least two pressure sensors with a group output being representative of the vertical pressure gradient at the group location, and an inclinometric system including one or mo ...