1
Brockman Mark W, White L Cameron, Murray Douglas J, Cockrell Jeffrey D, Mcnair Robert J: Method and apparatus for locating and re-entering one or more horizontal wells using whipstocks. Baker Hughes, August 21, 1996: GB2297988-A (53 worldwide citation)

A well completion system having a primary borehole 66 and one or more branch boreholes 68,70 is provided with a whipstock 72 at the junction between each branch borehole 68,70 and the primary borehole 66, each whipstock 72 having a through bore fitted with a removable plug 80 which allows selective ...


2
Ohmer Herve, Brockman Mark W: Template and connector providing plural flow paths at a lateral junction. Schlumberger Holdings, May 14, 2003: GB2381809-A (49 worldwide citation)

A wellbore junction assembly comprises a template 18 having a lateral window positioned at the junction and a connector 28 that seals against the template and part of which extends through the lateral window to define a flow path in communication with the lateral bore 26. A second flow path continue ...


3
Lembcke Jeffrey J, Brockman Mark W: Hydrostatic tool with electrically operated setting mechanism. Baker Hughes, February 4, 1998: GB2315507-A (7 worldwide citation)

The present invention provides a tool 100 for use in wellbores. The tool 100 is operated by the wellbore hydrostatic pressure. The tool 100 includes one or more devices that operate when a mechanical force is applied to such devices. The tool 100 includes at least one atmospheric chamber 120. A sett ...


4
Brockman Mark W, Ohmer Herve, Malone David L: Inductively coupled method and apparatus of communicating with wellbore equipment. Schlumberger Technology Corporation, sGRIFFIN Jeffrey E, December 27, 2001: WO/2001/098632 (3 worldwide citation)

An apparatus and method for communication in a wellbore includes inductive couplers (300, 302, 308, 310) for transmitting signals between concentric components.


5
Rioufol Emmanuel, Cho Brian W, Brockman Mark W, Gambier Philippe: Downhole measurement system for verifying a function of a downhole tool. Schlumberger Holdings, March 1, 2006: GB2417560-A (1 worldwide citation)

A system and method are provided to measure a pressure or other measurement at a source 16 (e.g. a hydraulic power supply) and in or near a downhole tool 10 and to compare the measurements to verify that, for example, the supply is reaching the tool. A gauge 24 is positioned within a packer 10, and/ ...


6
Ohmer Herve, Brockman Mark W: Junction assembly and method for connecting a main well bore and a lateral branch. Schlumberger Holdings, August 21, 2002: GB2372272-A (1 worldwide citation)

A lateral junction assembly 10 which comprises a template 18 having a lateral window and a connector 28 adapted to be engaged with the template via engagement members on both the connector and the template and guided through the template lateral window into the lateral branch bore 26. A sealing memb ...


7
Ohmer Herve, Brockman Mark W, Koptilov Platon, Vuyk Adrian: Method and apparatus for accurate milling of windows in well casings. Schlumberger Technology, February 20, 2002: GB2365472-A

A method and apparatus for predictable downhole milling of a casing window having predetermined location, orientation, dimension and contour geometry. An elongate substantially rigid milling shaft (62) has at least one casing window milling element (88, 90) in fixed relation therewith and has a pilo ...


8
Brockman Mark W, Ohmer Herve, Malone David L: Inductively coupled method and apparatus of communicating with wellbore equipment. Schlumberger Technology, May 21, 2003: GB2382089-A

An apparatus and method for communication in a wellbore includes inductive couplers (300, 302, 308, 310) for transmitting signals between concentric components.


9
Gotlib Mikhail, Ohmer Herve, Brockman Mark W: Positioning and conveying well apparatus and method. Schlumberger Technology, September 4, 2002: GB2372771-A

In a broad aspect, the invention may include a nipple (10), a deflector (42), and a conveying tool (116). The nipple may include an upper sealing surface (26) and a lower sealing surface (28). The nipple may also include a discriminator/muleshoe (30) having an alignment profile (32) and an alignment ...


10
Brockman Mark W, White L Cameron, Murray Douglas J, Cockrell Jeffrey D, Mcnair Robert J: Method and apparatus for locating and re-entering one or more horizontal wells using whipstocks. Baker Hughes, August 10, 1994: GB2274863-A

In accordance with the present invention, a plurality of methods and devices are provided for solving important and serious problems posed by lateral (and especially multilateral) completion (70) including methods and devices (94) for re-entering selected lateral wells (70) to perform completions wo ...



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