Patents
US 11028682 B1: Eccentric pipe-in-pipe downhole gas separator
- Granted
- 2021-06-08
- Filed
- 2016-11-03 application 15342188
- Type
- Utility · 13 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
An eccentric pipe-in-pipe downhole gas separator apparatus for separation of gas from liquid in a downhole well. The separator apparatus includes an outer tube having an inner diameter and an inner tube having an outer diameter smaller than the inner diameter of the outer tube. The inner tube is eccentric to the outer tube wherein a conduit having a crescent shaped cross-section is formed between the inner diameter of the outer tube and the outer diameter of the inner tube.
Source: PVGPATDIS, file of 2026-04-10 (ipg210608.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| The University of Tulsa 48 patents | US company or organization | Tulsa, OK | THE UNIVERSITY OF TULSA State business registration EXACT high confidence: identical full name and state THE UNIVERSITY OF TULSA Federal lobbying client EXACT high confidence: identical full name and state University of Tulsa College or university FUZZY medium confidence: same name (governing-board words and legal endings aside) and state UNIVERSITY OF TULSA Nonprofit FUZZY medium confidence: same name (governing-board words and legal endings aside) and state | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Hong Zhang | Tulsa, OK | 6 | 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 | E21B43/38 | 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 |
|---|---|---|---|---|---|
| 2016-11-03 | Assignment Assignment of assignor's interest | ZHANG, HONG-QUAN signed 2016-11-02 | THE UNIVERSITY OF TULSA TULSA, OK | 40208/675 | 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.