Patents
US 12723498 B2: Venturi controlled unloading valve for gas lift system
- Granted
- 2026-09-01
- Filed
- 2023-04-14 application 19101139
- Type
- Utility · 8 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
An unloading valve for use in evacuating fluids from a wellbore annulus. The unloading valve can include a valve body, an intake to the valve body, a discharge from the valve body, and an induced pressure differential valve control system configured to automatically close the intake to the valve body in response to a change in the density of fluids passing through the unloading valve. In some embodiments, the induced pressure differential valve control system includes a flow sleeve, a valve element, a draw tube and a biasing spring. The flow sleeve includes a flow constriction that produces a pressure differential (AP) as the fluids pass through the flow sleeve that is communicated by the draw tube to the valve element. The biasing spring is configured to urge the valve element into a closed position when the pressure differential (AP) falls below a threshold value.
Source: PTBLXML, file of 2026-09-01 (ipgb20260901.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Baker Hughes Oilfield Operations LLC 922 patents | US company or organization | Houston, TX | PTBLXML, file of 2026-09-01 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Donavan Brown | Houston, TX | 21 | PTBLXML, file of 2026-09-01 |
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 | E21B43/123 | PTBLXML, file of 2026-09-01 |
| Y10T | Technical subjects covered by former us classification | Y10T137/2934 | PTBLXML, file of 2026-09-01 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
No recorded assignments or security interests on file for this patent.
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.