Patents
US 7506701 B2: Drill bit assembly for directional drilling
- Granted
- 2009-03-24
- Filed
- 2008-03-21 application 12053334
- Type
- Utility · 20 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
In one aspect of the invention a drill bit assembly has a body portion intermediate a shank portion and a working portion, the working portion having at least one cutting element. A shaft is supported by the body portion and extends beyond the working portion. The shaft also has a distal end that is rotationally isolated from the body portion. In another aspect of the invention, a method for steering a downhole tool string has the following steps: providing a drill bit assembly attached to an end of the tool string disposed within a bore hole; providing a shaft extending beyond a working portion of the assembly; engaging a subterranean formation with a distal end of the shaft; and angling the drill bit assembly with the shaft along a desired drilling trajectory.
Source: PVGPATDIS, file of 2026-04-10 (ipg090324.xml).
Assignees
No assignee reported: the patent was granted to its inventors.
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| David R. Hall | Provo, UT | 859 | PVGPATDIS, file of 2026-04-10 | |
| Francis Leany | Provo, UT | 39 | PVGPATDIS, file of 2026-04-10 | |
| Scott Dahlgren | Provo, UT | 105 | PVGPATDIS, file of 2026-04-10 | |
| David Lundgreen | Provo, UT | 26 | PVGPATDIS, file of 2026-04-10 | |
| Daryl Wise | Provo, UT | 22 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| E21B | Earth or rock drilling; obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells | E21B7/064 | PVGPATDIS, file of 2026-04-10 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2012-05-18 | Assignment Assignment of assignor's interest | LUNDGREEN, DAVID signed 2006-01-17 | HALL, DAVID R. PROVO, UT | 28232/287 | ECORSEXC, file of 2026-09-25 |
| 2010-03-10 | Assignment Assignment of assignor's interest | NOVADRILL, INC. signed 2010-01-21 | SCHLUMBERGER TECHNOLOGY CORPORATION HOUSTON, TX | 24055/471 | ECORSEXC, file of 2026-09-25 |
| 2010-03-04 | Assignment Assignment of assignor's interest | DAHLGREN, SCOTT, MR. signed 2006-01-17 LEANY, FRANCIS, MR. signed 2006-01-17 WISE, DARYL N., MR. signed 2006-01-17 | HALL, DAVID R., MR. PROVO, UT | 24029/593 | ECORSEXC, file of 2026-09-25 |
| 2008-10-20 | Assignment Assignment of assignor's interest | HALL, DAVID R. signed 2008-08-06 | NOVADRILL, INC. PROVO, UT | 21701/758 | PASDL, file of 2026-10-15 |
Documents recorded with the USPTO Assignment Recordation Branch that list this patent. A security interest is a lender’s claim on the patent as collateral; a release ends it.
USPTO bulk data: PatentsView granted patents, disambiguated (PVGPATDIS) for patents, assignees, inventors, places and CPC categories; the USPTO Patent Assignment Dataset (ECORSEXC) for assignments and security interests. Patents filed in the last 20 years. No claims or full text. Links to other records are by name (and state): EXACT means the identical full name and state; FUZZY means a looser name match, with the confidence shown.