Patents
US 11008809 B2: Bent housing drilling motor with counter-rotating lower end
- Granted
- 2021-05-18
- Filed
- 2019-01-29 application 16261094
- Type
- Utility · 26 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A drilling assembly includes a power section with a housing that rotates in a first direction at a drill string rotation rate. An output rotates a drill bit through a transmission shaft in the first direction at a rotor rotation rate relative to the housing. A bent housing between the power section and the drill bit rotates in a second direction at a variable rotation rate relative to the power housing. The transmission shaft extends through the bent housing. A mechanical brake system adjusts the bent housing's variable rotation rate. The bent housing rotates relative to the wellbore in a rotary mode, but not in a sliding mode. The sliding mode maintains the drill bit's direction and inclination while the drill string rotates. In all modes, the drill bit's rotation rate is the sum of the drill string rate and the rotor rate relative to the power housing.
Source: PVGPATDIS, file of 2026-04-10 (ipg210518.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Rival Downhole Tools LC 11 patents | US company or organization | Houston, TX | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Gunther HH von Gynz-Rekowski | Conroe, TX | 42 | PVGPATDIS, file of 2026-04-10 | |
| William Christian Herben | Magnolia, TX | 11 | PVGPATDIS, file of 2026-04-10 | |
| Mark Allen Reeves | Diemelstraße, TX | 12 | PVGPATDIS, file of 2026-04-10 | |
| Donald M. Sawyer | Conroe, TX | 1 | PVGPATDIS, file of 2026-04-10 | |
| Roger Fincher | Conroe, TX | 21 | 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 | E21B4/02 | 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 |
|---|---|---|---|---|---|
| 2025-03-12 | Release of security interest Release of security interest | BANC OF CALIFORNIA F/K/A PACIFIC WESTERN BANK D/B/A PACIFIC WESTERN BUSINESS FINANCE signed 2025-03-12 | RIVAL DOWNHOLE TOOLS LLC HOUSTON, TX | 70484/567 | ECORSEXC, file of 2026-09-25 |
| 2024-11-14 | Assignment Assignment of assignor's interest | RIVAL DOWNHOLE TOOLS, LC signed 2024-10-01 | OPTIMIZED DOWNHOLE TECHNOLOGIES LLC CONROE, TX | 69357/483 | ECORSEXC, file of 2026-09-25 |
| 2024-10-22 | Release of security interest Partial release of intellectual property security agreement | BANC OF CALIFORNIA F/K/A PACIFIC WESTERN BANK D/B/A PACIFIC WESTERN BUSINESS FINANCE signed 2024-10-22 | RIVAL DOWNHOLE TOOLS LLC HOUSTON, TX | 69217/126 | ECORSEXC, file of 2026-09-25 |
| 2022-10-28 | Security interest Security interest Security interest | RIVAL DOWNHOLE TOOLS LLC signed 2022-10-13 | PACIFIC WESTERN BANK D/B/A PACIFIC WESTERN BUSINESS FINANCE PHOENIX, AZ | 61586/149 | ECORSEXC, file of 2026-09-25 |
| 2020-05-27 | Assignment Assignment of assignor's interest | FINCHER, ROGER W signed 2020-01-22 HERBEN, WILLIAM CHRISTIAN signed 2020-01-22 REEVES, MARK ALLEN signed 2020-01-22 SAWYER, DONALD M signed 2020-01-22 VON GYNZ-REKOWSKI, GUNTHER HH signed 2020-01-22 | RIVAL DOWNHOLE TOOLS, LC HOUSTON, TX | 52759/13 | ECORSEXC, file of 2026-09-25 |
| 2020-05-27 | Assignment Assignment of assignor's interest | ASHMIN HOLDING LLC signed 2019-04-26 | RIVAL DOWNHOLE TOOLS, LC HOUSTON, TX | 52758/946 | ECORSEXC, file of 2026-09-25 |
| 2020-05-27 | Assignment Nunc pro tunc assignment | FINCHER, ROGER W signed 2019-07-26 SAWYER, DONALD M signed 2019-07-26 | ASHMIN HOLDING LLC HOUSTON, TX | 52758/530 | ECORSEXC, file of 2026-09-25 |
| 2020-05-27 | Assignment Nunc pro tunc assignment | HERBEN, WILLIAM CHRISTIAN signed 2019-06-28 REEVES, MARK ALLEN signed 2019-06-28 VON GYNZ-REKOWSKI, GUNTHER HH signed 2019-06-28 | ASHMIN HOLDING LLC HOUSTON, TX | 52758/346 | ECORSEXC, file of 2026-09-25 |
| 2020-05-26 | Assignment Nunc pro tunc assignment | HERBEN, WILLIAM CHRISTIAN signed 2019-06-28 REEVES, MARK ALAN signed 2019-06-28 VON GYNZ-REKOWSKI, GUNTHER HH signed 2019-06-28 | ASHMIN HOLDING LLC HOUSTON, TX | 52753/978 | ECORSEXC, file of 2026-09-25 |
| 2020-01-22 | Assignment Assignment of assignor's interest | ASHMIN HOLDING LLC signed 2020-01-22 FINCHER, ROGER W signed 2020-01-22 HERBEN, WILLIAM CHRISTIAN signed 2020-01-22 REEVES, MARK ALLEN signed 2020-01-22 SAWYER, DONALD M signed 2020-01-22 VON GYNZ-REKOWSKI, GUNTHER HH signed 2020-01-22 | RIVAL DOWNHOLE TOOLS, LC HOUSTON, TX | 51588/157 | ECORSEXC, file of 2026-09-25 |
| 2019-11-22 | Assignment Nunc pro tunc assignment | HERBEN, WILLIAM CHRISTIAN signed 2019-06-28 REEVES, MARK ALLEN signed 2019-06-28 VON GYNZ-REKOWSKI, GUNTHER HH signed 2019-06-28 | ASHMIN HOLDING LLC HOUSTON, TX | 51097/214 | ECORSEXC, file of 2026-09-25 |
| 2019-11-22 | Assignment Nunc pro tunc assignment | FINCHER, ROGER W. signed 2019-07-26 SAWYER, DONALD M. signed 2019-07-26 | ASHMIN HOLDING LLC HOUSTON, TX | 51085/208 | ECORSEXC, file of 2026-09-25 |
| 2019-05-06 | Assignment Assignment of assignor's interest | ASHMIN HOLDING LLC signed 2019-04-26 | RIVAL DOWNHOLE TOOLS LC HOUSTON, TX | 49094/110 | 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.