Patent assignee · US · COMPANY

Canrig Drilling Technology Ltd.

72Patents
66Active
72Granted
56Portfolio score

Filing activity: Feb 18, 1997 → Sep 13, 2017 · 23 expiring within 5 years

Most-cited patents

PatentTitleAreaCited byStatus
US6679333B2 Top drive well casing system and method Fixed Constructions 151 Expired
US6050348A Drilling method and apparatus Fixed Constructions 126 Expired
US7823655B2 Directional drilling control Fixed Constructions 122 Active
US7938197B2 Automated MSE-based drilling apparatus and methods Fixed Constructions 112 Active
US7860593B2 Well prog execution facilitation system and method Physics 98 Active
US9706185B2 Device control employing three-dimensional imaging Physics 88 Active
US8360171B2 Directional drilling control apparatus and methods Fixed Constructions 70 Active
US8528663B2 Apparatus and methods for guiding toolface orientation Fixed Constructions 65 Active
US7802634B2 Integrated quill position and toolface orientation display Fixed Constructions 61 Active
US8672055B2 Automated directional drilling apparatus and methods Fixed Constructions 61 Active
US8510081B2 Drilling scorecard Fixed Constructions 53 Active
US6082225A Power tong wrench Fixed Constructions 49 Expired
US7828085B2 Modular top drive Emerging Cross-Sectional Technologies 47 Active
US8215417B2 Method, device and system for drilling rig modification Fixed Constructions 45 Active
US8839884B2 Direct modular top drive with pipe handler module and methods Emerging Cross-Sectional Technologies 44 Active
US7832974B2 Pipe-handling apparatus Fixed Constructions 44 Expired
US7958787B2 Oilfield tubular torque wrench Fixed Constructions 40 Active
US8602126B2 Directional drilling control apparatus and methods Fixed Constructions 32 Active
US8718802B2 Well prog execution facilitation system and method Physics 31 Active
US8386059B2 Well prog execution facilitation system and method Physics 31 Active
US8215887B2 Pipe-handling apparatus and methods Fixed Constructions 29 Active
US6920926B2 Top drive well casing system Fixed Constructions 26 Expired
US9290995B2 Drill string oscillation methods Fixed Constructions 25 Active
US7445050B2 Tubular running tool Fixed Constructions 22 Active
US8033779B2 Pipe handling apparatus and methods Emerging Cross-Sectional Technologies 20 Active

Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.