Patents
US 7900720 B2: Downhole drive shaft connection
- Granted
- 2011-03-08
- Filed
- 2007-12-14 application 11956623
- Type
- Utility · 17 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
In one aspect of the present invention, a section of a drill string has a drill bit with a body intermediate a shank and a working face, the working face having 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. A drive shaft is in communication with the jack element and a rotary source. The drive shaft has a first portion secured within a bore of a tool string component in the tool string and a second portion secured within a bore of the drill bit. The first and second portions of the drive shaft are connected at a pin and box connection wherein the first and second portions are automatically connected as the tool string component is mechanically coupled to the drill bit.
Source: PVGPATDIS, file of 2026-04-10 (ipg110308.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 | |
| Paula Turner | Pleasant Grove, UT | 33 | PVGPATDIS, file of 2026-04-10 | |
| Daryl Wise | Provo, UT | 22 | PVGPATDIS, file of 2026-04-10 | |
| Nathan Nelson | Provo, UT | 15 | PVGPATDIS, file of 2026-04-10 | |
| Andrew Pilgrim | Provo, UT | 1 | PVGPATDIS, file of 2026-04-10 | |
| Robert Myler | Chesterfield, MO | 4 | 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 | E21B17/046 | 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 |
| 2007-12-14 | Assignment Assignment of assignor's interest | LUNDGREEN, DAVID, MR. signed 2007-12-10 MYLER, ROBERT, MR. signed 2007-12-10 WISE, DARYL, MR. signed 2007-12-10 NELSON, NATHAN, MR. signed 2007-12-11 PILGRIM, ANDREW, MR. signed 2007-12-11 TURNER, PAULA, MS. signed 2007-12-12 | HALL, DAVID R., MR. PROVO, UT | 20250/869 | 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.