1
Babour Kamal, Rossi David, Chouzenoux Christian: Power and signal transmission using insulated conduit for permanent downhole installations. Schlumberger Technology, Schlumberger Services Petrol, Schlumberger Holdings, December 15, 1999: EP0964134-A2 (53 worldwide citation)

An apparatus and method is presented for establishing electrical connection to permanent downhole oilfield installations (26,27,28) using an electrically insulated conducting casing (22). Current is caused to flow in the casing by a source on the surface connected to the casing (22). One or more per ...


2
Babour Kamal, Huau Christian, Pittman Dennis: A method of recovering data acquired and stored down a well, by an acoustic path, and apparatus for implementing the method. Schlumberger Technology, Schlumberger Holdings, May 14, 1997: EP0773345-A1 (27 worldwide citation)

In a well (10) in production or undergoing tests, the recovery of data acquired and stored in a downhole unit (16) located in the lower part of a drillpipe string (12) below a test valve (20) is effected directly in the form of acoustic signals between the downhole unit (16) and an interface tool (2 ...


3
Babour Kamal, Rossi David, Chouzenoux Christian: Power and signal transmission for wellbores. Schlumberger, December 15, 1999: GB2338253-A (23 worldwide citation)

Apparatus for transmitting an electrical signal to or from a downhole device 28 in a well 1 comprises an electrically conductive conduit having an insulative encapsulation layer 30 around a section 22B of the conduit and a conduit gap 11 insulating the insulated section 22B from an adjoining section ...


4
Babour Kamal, Belani Ashok C O Schlumberger, Seeman Bronislaw: Method and appparatus for surveying and monitoring a hydrocarbon reservoir.. Schlumberger Technology, Schlumberger Holdings, June 7, 1995: EP0656547-A1 (16 worldwide citation)

A method of monitoring a fluid reservoir traversed by at least one well comprised the following steps: at least one electrode is connected to the surface and fixed in permanent manner in the well under conditions isolating the section of the well in which it is located hydraulically from the rest of ...


5
Babour Kamal: Communication along a drill string. Schlumberger, October 16, 1996: GB2299915-A (14 worldwide citation)

Information regarding drilling parameters in a drilling operation is communicated from the drill head by a downhole radiating antenna 16 in the well 10. The antenna 16 propogates electromagnetic waves 18 through the surrounding formations, the drill string 20 and the drilling rig 12. Measurements ar ...


6
Babour Kamal, Belani Ashok, Pilla Jacques: Method and device for monitoring subsurface reservoirs.. Schlumberger Technology, Schlumberger Services Petrol, Schlumberger Holdings, June 7, 1995: EP0656460-A2 (5 worldwide citation)

A method of monitoring subsurface formations containing at least one fluid reservoir and traversed by at least one well, by means of at least one sensor responsive to a parameter related to fluids, comprising the steps of: lowering the sensor into the well to a depth level corresponding to the reser ...


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8
Babour Kamal: Spark plug adapted for sensing in an oil pipe or wellhead containment vessel. Schlumberger Holdings, June 8, 2005: GB2408803-A (3 worldwide citation)

A spark plug is used as an electrical communication device across a wall of an oil pipe or wellhead oil containment vessel. The spark plug may be used to make an electrical communication with a sensor or it may be adapted to act as a sensor itself. It may be used to measure the electrical properties ...


9
Babour Kamal, Huau Christian, Pittman Dennis: An acoustic coupling arrangement for retrieving data from down a well. Schlumberger, May 14, 1997: GB2307077-A (3 worldwide citation)

In a well (10) in production or undergoing tests, the recovery of data acquired and stored in a downhole unit (16) located in the lower part of a drillpipe string (12) below a test valve (20) is effected directly in the form of acoustic signals between the downhole unit (16) and an interface tool (2 ...


10
Babour Kamal, Belani Ashok Kumar, Pilla Jacques: Monitoring subsurface formations. Schlumberger, June 14, 1995: GB2284626-A (3 worldwide citation)

A method of monitoring subsurface formations containing at least one fluid reservoir and traversed by at least one well, by means of at least one sensor responsive to a parameter related to fluids, comprising the steps of: lowering the sensor into the well to a depth level corresponding to the reser ...