Issued Patents All Time
Showing 1–24 of 24 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7798253 | Method and apparatus for controlling precession in a drilling assembly | — | 2010-09-21 |
| 7404439 | Horizontal drilling | — | 2008-07-29 |
| 6523623 | Method and apparatus for determining drilling paths to directional targets | — | 2003-02-25 |
| 6070663 | Multi-zone profile control | Edward Paul Cernocky, Robert Lance Cook | 2000-06-06 |
| 5931239 | Adjustable stabilizer for directional drilling | — | 1999-08-03 |
| 5836406 | Adjustable stabilizer for directional drilling | — | 1998-11-17 |
| 5607018 | Viscid oil well completion | — | 1997-03-04 |
| 5586609 | Method and apparatus for drilling with high-pressure, reduced solid content liquid | — | 1996-12-24 |
| 5289881 | Horizontal well completion | — | 1994-03-01 |
| 4773488 | Development well drilling | Larry N. Bell, Randy A. Ruedrich | 1988-09-27 |
| 4762186 | Medium curvature directional drilling method | James A. Dech, David D. Hearn, John H. Striegler | 1988-08-09 |
| 4715451 | Measuring drillstem loading and behavior | Amjad A. Bseisu, Yih-Min Jan | 1987-12-29 |
| 4674580 | Means for reducing bending stresses in drill pipe | David D. Hearn | 1987-06-23 |
| 4653598 | Drainhole drilling assembly with oriented elliptic drill collar | David D. Hearn | 1987-03-31 |
| 4648469 | Alleviating vortex shedding stress problems | Michael D. Biggs | 1987-03-10 |
| 4640353 | Electrode well and method of completion | — | 1987-02-03 |
| 4632188 | Subsea wellhead apparatus | John A. Karish | 1986-12-30 |
| 4629012 | Drainhole drilling assembly | — | 1986-12-16 |
| 4621691 | Well drilling | — | 1986-11-11 |
| 4601353 | Method for drilling drainholes within producing zone | John H. Striegler | 1986-07-22 |
| 4523652 | Drainhole drilling assembly and method | — | 1985-06-18 |
| 4519463 | Drainhole drilling | — | 1985-05-28 |
| 4363568 | Conductors for a guyed tower and method for installing same | — | 1982-12-14 |
| 4339005 | Curved well conductors for offshore platform | — | 1982-07-13 |