1
Le, Roy Delage Sylvaine, Martin Beurel Muriel, Keith Dismuke, Nelson Erik: Self adaptive cement systems. Services Petroliers Schlumberger, Schlumberger Technology, Schlumberger Holding, Schlumberger Canada, Sofitech, Le, Roy Delage Sylvaine, Martin Beurel Muriel, Keith Dismuke, Nelson Erik, MENES Chatherine, November 25, 2004: WO/2004/101952 (92 worldwide citation)

A self-healing cement system includes cement, water and at least one additive that swells in contact with water from reservoir or from formation in the case of a structural failure in the set cement to provide a physical barrier in the zone of failure. Examples of such material include particles of ...


2
Willberg Dean, Dismuke Keith: Self-destructing filter cake. Schlumberger Canada, Services Petroliers Schlumberger, Schlumberger Holdings, Schlumberger Technology, Sofitech, MENES Catherine, May 6, 2004: WO/2004/037946 (90 worldwide citation)

A composition and method are given for self-destructive fluid loss additives and filter cakes in wellbores and subterranean formations. The fluid loss additives and filter cakes are formed from a mixture of particulate solid acid-precursors, such as a polylactic acid or a polyglycolic acid, and part ...


3
Le, Roy Delage Sylvaine, Guillot Dominique, Dismuke Keith, Nelson Erik: Self adaptive cement systems. Services Petroliers Schlumberger, Schlumberger Technology, Schlumberger Holdings, Schlumberger Canada, Sofitech, Le, Roy Delage Sylvaine, Guillot Dominique, Dismuke Keith, Nelson Erik, MENES Catherine, November 25, 2004: WO/2004/101951 (89 worldwide citation)

A self-adaptive cement system includes cement, water and at least one additive that reacts or and expands in contact with oil and gas. Several chemical products have been identified including rubber alkylstyrene, polynorbornene, resins such precrosslinked substituted vinyl acrylate copolymers and di ...


4
Still John, Dismuke Keith, Frenier Wayne: Generating acid downhole in acid fracturing. Schlumberger Canada, Services Petroliers Schlumberger, Schlumberger Holdings, Schlumberger Technology, Sofitech, MENES Catherine, May 6, 2004: WO/2004/038176 (85 worldwide citation)

An acid fracturing method is provided in which the acid is generated in the fracture by hydrolysis of a solid acid-precursor selected from one or more than one of lactide, glycolide, polylactic acid, polyglycolic acid, a copolymer of polylactic acid and polyglycolic acid, a copolymer of glycolic aci ...


5
Vercaemer Claude J, Darling Brian We: Methode et dispositif utilises pour la cimentation dun puits, Method and apparatus for cementing a well. Schlumberger Canada, Schlumberger Canada, SMART & BIGGAR, March 18, 2003: CA2234386 (67 worldwide citation)

A method of cementing a well permitting a reduction in the degree of diameter reduction of casing or liners required, and not requiring excessively large initial conductor casing, is described. The method is characterized by provision of an enlarged wellbore and a novel liner structure which is adap ...


6
John D Arnason, Michael J Hampton: Register position sensing and controlling apparatus. Schlumberger Canada, Dale Gaudier, December 11, 1984: US04488152 (52 worldwide citation)

A visually and electronically readable motor driven register has a plurality of dependently rotatable, coaxial, incrementally positionable, number wheels which each carry a movable electrode fixed in a predetermined position relative to the numbers on each wheel. Adjacent each movable electrode is i ...


7
John D Jeter: Signal pressure pulse generator. Schlumberger Canada, John J Ryberg, December 17, 1991: US05073877 (42 worldwide citation)

A mechanical oscillator driven by drilling fluid flow pumped down a drill string bore is combined with sensors and controls to produce a downhole drilling fluid pressure pulse generator for use in drill strings for Measurement While Drilling (MWD) pipe bore telemetry.


8
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 ...


9
NOYA JOSE VIDAL: Optical coiled tubing log assembly. Schlumberger Canada, Fonseca Darla P, April 7, 2011: WO/2011/041390 (34 worldwide citation)

A fiber optic based logging assembly deliverable via coiled tubing. The downhole portion of the assembly is directed to develop a logging profile of a well by way of the fiber optic line. Thus, a downhole battery may be provided with the tool. Further, opto-electric interfaces may be provided with t ...


10
Chesley R Howell: Electricity metering device with cover. Schlumberger Canada, Sanford J Asman, February 11, 1992: US05088004 (26 worldwide citation)

An electricity metering interbase device (30) for connecting a primary electrical metering device (40) and a power source (42) includes a generally cylindrical base (32) from which a generally rectangular terminal housing (34) extends, and a cover (36). The cover (36) includes one or more hinge pins ...