US3970143A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil well production system
Assignee: Combustion Engineering Inc
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Filing: 1975-06-23
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Granted: 1976-07-20
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Expires: 1995-06-23
Abstract
Abstract A number of oil wells each have a crude oil processing unit located at close to the wellhead. The clean oil produced from each processing unit is connected to supply the clean oil as hydraulic power oil and to sales. The sales output conduits are manifolded. The control system normally creates clean oil, which is excess over that required for pumping, to sales. The control system alternatively withdraws clean oil from the manifold if a well temporarily does not produce enough clean oil for pumping.
Inventors
- 👤 Sammy DeWitt Thrash
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:25
CPC Classifications
E; E21; E21B; E21B43/00; E21B36/00; E21B36/006; E21B43/34
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
205 words
A production system for crude oil, including; an oil well; a downhole pump actuated by high pressure hydraulic fluid; a crude oil processing unit located at the oil well and connected to the downhole pump to receive fluids produced from the oil well and including, a. means connected to the unit which heat the fluids, b. means connected to the unit which degas the liquids, c. means connected to the unit which electrostatically separate the liquids into clean crude oil and water, d.and a compartment within the unit arranged to receive the clean crude oil; a high pressure pump connected to the clean oil compartment to receive the clean oil and connected to the downhole pump to supply the clean oil as the actuating hydraulic fluid; a storage facility connected to the clean oil compartment to receive all the clean oil processed in excess of the quantity received by the high pressure pump; and a control system connected between the storage facility and clean oil compartment and arranged to return processed clean crude oil to the high pressure pump from the storage facility during periods when the oil well output of the processing unit is less than the amount required to actuate the downhole pump.
Claim 2
Dependent Claim
205 words
A production system for crude oil, including; an oil well; a downhole pump actuated by high pressure hydraulic fluid; a crude oil processing unit located at the oil well and connected to the downhole pump to receive fluids produced from the oil well and including, a. means connected to the unit which heat the fluids, b. means connected to the unit which degas the liquids, c. means connected to the unit which electrostatically separate the liquids into clean crude oil and water, d.and a compartment within the unit arranged to receive the clean crude oil; a high pressure pump connected to the clean oil compartment to receive the clean oil and connected to the downhole pump to supply the clean oil as the actuating hydraulic fluid; a storage facility connected to the clean oil compartment to receive all the clean oil processed in excess of the quantity received by the high pressure pump; and a control system connected between the storage facility and clean oil compartment and arranged to return processed clean crude oil to the high pressure pump from the storage facility during periods when the oil well output of the processing unit is less than the amount required to actuate the downhole pump.
Claim 3
Dependent Claim
144 words
The production system of claim 1 in which the control system includes: level controls mounted in the clean oil compartment of the processing unit and arranged to sense predetermined high and low levels of the clean oil and establish signals representative of each level, and a valve system mounted in the connection between the clean oil compartment and storage and controlled by the signals of the level controls to connect the clean oil compartment and storage to flow clean oil to storage for a period when the high level signal indicates the quantity of processed crude oil produced is greater than the quantity required to operate the downhole pump and to flow processed crude oil from storage for a period when the low level signal indicates the quantity of processed crude oil produced is less than the quantity required to operate the downhole pump.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-07-20 | 1980-01-19 | 1980-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-20 | 1984-01-19 | 1984-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-20 | 1988-01-19 | 1988-07-20 | $7700.00 | Window Closed / Lapsed |