1
Graham McElhinney: Downhole referencing techniques in borehole surveying. PathFinder Energy Services, April 19, 2005: US06882937 (30 worldwide citation)

A method for determining rotational offset between first and second gravity measurement devices deployed on a downhole tool is disclosed. The method includes positioning the tool in a previously surveyed section of a borehole that provides a historical survey including at least three previously surv ...


2
William Banning Vail III, Tomislav Skerl, Damir S Skerl: Mud motor assembly. Smart Drilling and Completion, Sheridan Ross P C, April 4, 2017: US09611693 (1 worldwide citation)

A longer-lasting, lower cost, more powerful, all metal, mud motor than the presently available progressing cavity type mud motors for drilling boreholes into the earth. A mud motor apparatus possessing one single drive shaft that turns a rotary drill bit, which apparatus is attached to a drill pipe ...


3
William Banning Vail III: Mud motor assembly. Smart Drilling and Completion, Sheridan Ross P C, August 29, 2017: US09745799

A longer-lasting, lower cost, more powerful, all metal, mud motor than the presently available progressing cavity type mud motors for drilling boreholes into the earth. A mud motor apparatus possessing one single drive shaft that turns a rotary drill bit, which apparatus is attached to a drill pipe ...


4
William Banning Vail III, Robert L Dekle, Damir S Skerl, James E Chitwood: Universal drilling and completion system. Smart Drilling and Completion, Sheridan Ross P C, March 7, 2017: US09587435

Methods and apparatus are described to drill and complete wellbores. Such wellbores include extended reach horizontal wellbores, for example in shales, deep subsea extended reach wellbores, and multilateral wellbores. Specifically, the invention provides simple threaded subassemblies that are added ...


5
William Banning Vail III, Tomislav Skerl, Damir S Skerl: Mud motor assembly. Smart Drilling and Completion, Sheridan Ross P C, October 31, 2017: US09803424

A longer-lasting, lower cost, more powerful, all metal, mud motor than the presently available progressing cavity type mud motors for drilling boreholes into the earth. A mud motor apparatus possessing one single drive shaft that turns a rotary drill bit, which apparatus is attached to a drill pipe ...


6
Mcelhinney Graham: Techniques de reference de fond de trou en diagraphie de puits, Downhole referencing techniques in borehole surveying. Pathfinder Energy Services, Pathfinder Energy Services, BORDEN LADNER GERVAIS, November 18, 2008: CA2458254

A method for determining rotational offset between first and second gravity measurement devices deployed on a downhole tool is disclosed. The method includes positioning the tool in a previously surveyed section of a borehole that provides a historical survey including at least three previously surv ...


7
Graham McElhinney: Downhole referencing techniques in borehole surveying. PathFinder Energy Services, W H Energy Services, August 26, 2004: US20040163443-A1

A method for determining rotational offset between first and second gravity measurement devices deployed on a downhole tool is disclosed. The method includes positioning the tool in a previously surveyed section of a borehole that provides a historical survey including at least three previously surv ...


8
MUD MOTOR ASSEMBLY. Smart Drilling and Completion, May 4, 2017: US20170122033-A1

A longer-lasting, lower cost, more powerful, all metal, mud motor than the presently available progressing cavity type mud motors for drilling boreholes into the earth. A mud motor apparatus possessing one single drive shaft that turns a rotary drill bit, which apparatus is attached to a drill pipe ...


9
UNIVERSAL DRILLING AND COMPLETION SYSTEM. SMART DRILLING AND COMPLETION, June 22, 2017: US20170175468-A1

Methods and apparatus are described to drill and complete wellbores. Such wellbores include extended reach horizontal wellbores, for example in shales, deep subsea extended reach wellbores, and multilateral wellbores. Specifically, the invention provides simple threaded subassemblies that are added ...


10
MUD MOTOR ASSEMBLY. Smart Drilling and Completion, December 14, 2017: US20170356247-A1

A longer-lasting, lower cost, more powerful, all metal, mud motor than the presently available progressing cavity type mud motors for drilling boreholes into the earth. A mud motor apparatus possessing one single drive shaft that turns a rotary drill bit, which apparatus is attached to a drill pipe ...