Patents
US 8499857 B2: Downhole jack assembly sensor
- Granted
- 2013-08-06
- Filed
- 2009-11-23 application 12623566
- Type
- Utility · 21 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A drilling apparatus which includes a drill bit attachable to the drilling end of a drill string, the drill bit including a bit body being attached to a shank and having a working face with at least one cutting element. The drilling apparatus also includes a jack element positioned within a bore of the bit body having a working tip substantially protruding from the working face, and which jack element is also adapted to move with respect to the bit body. One or more position feedback sensors are positioned proximate the jack element and are adapted to detect the axial and/or angular position of the jack element with respect to the bit body.
Source: PVGPATDIS, file of 2026-04-10 (ipg130806.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Schlumberger Technology Corporation 7,610 patents | US company or organization | Houston, TX | PVGPATDIS, file of 2026-04-10 |
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 | |
| Jim Shumway | Lehi, UT | 14 | PVGPATDIS, file of 2026-04-10 | |
| Nathan Nelson | Provo, UT | 15 | PVGPATDIS, file of 2026-04-10 | |
| Daryl Wise | Provo, UT | 22 | PVGPATDIS, file of 2026-04-10 | |
| Paula Turner | Pleasant Grove, UT | 33 | 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 | E21B47/09 | 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 |
|---|---|---|---|---|---|
| 2011-05-03 | Assignment Assignment of assignor's interest | HALL, DAVID R. signed 2010-01-22 | SCHLUMBERGER TECHNOLOGY CORPORATION HOUSTON, TX | 26219/462 | ECORSEXC, file of 2026-09-25 |
| 2011-05-03 | Assignment Assignment of assignor's interest | HALL, DAVID R. signed 2008-08-06 | NOVADRILL, INC. PROVO, UT | 26219/438 | ECORSEXC, file of 2026-09-25 |
| 2011-05-03 | Assignment Assignment of assignor's interest | LUNDGREEN, DAVID signed 2007-08-30 NELSON, NATHAN signed 2007-08-30 WISE, DARYL signed 2007-08-30 SHUMWAY, JIM signed 2007-08-31 TURNER, PAULA signed 2007-09-05 | HALL, DAVID R. PROVO, UT | 26219/418 | 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.