Patents
US 7559379 B2: Downhole steering
- Granted
- 2009-07-14
- Filed
- 2007-08-10 application 11837321
- Type
- Utility · 19 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
In one aspect of the present invention, a drill string has a drill bit with a body intermediate a shank and a working face. The working face has at least one cutting element. A jack element is disposed within the drill bit body and has a distal end substantially protruding from the working face. The distal end has a primary deflecting surface having an angle relative to a central axis of the jack element of 15 to 75 degrees.
Source: PVGPATDIS, file of 2026-04-10 (ipg090714.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 | |
| 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 | E21B4/14 | 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 |
|---|---|---|---|---|---|
| 2010-03-10 | Assignment Assignment of assignor's interest | NOVADRILL, INC. signed 2010-01-21 | SCHLUMBERGER TECHNOLOGY CORPORATION HOUSTON, TX | 24055/457 | 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 |
| 2007-08-10 | Assignment Assignment of assignor's interest | LUNDGREEN, DAVID, MR. signed 2007-08-08 WISE, DARYL, MR. signed 2007-08-08 | HALL, DAVID R., MR. PROVO, UT | 19681/969 | ECORSEXC, file of 2026-09-25 |
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.