US5117908A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and equipment for obtaining energy from oil wells
Assignee: KSB AG
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Filing: 1989-03-13
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Granted: 1992-06-02
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Expires: 2009-03-13
Abstract
Abstract Pressurized petroleum flows from a well into a turbine. The petroleum undergoes a pressure reduction in the turbine and then enters a separation chamber where it is separated into liquid and gaseous phases. The liquid phase is sent to a pump which serves to transfer the liquid phase to a station remote from the well. Similarly, the gaseous phase is directed to a compressor which functions to transfer the gaseous phase to a station remote from the well. The pump and the compressor are coupled to the turbine which uses the energy liberated by the petroleum during pressure reduction to drive the pump and the compressor.
Inventors
- 👤 Heinrich Hofmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 00:15
CPC Classifications
F; F03; F03G; F03G7/00; F03G7/04; E; E21; E21B; E21B43/00; E21B43/01; E21B43/34
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
135 words
An installation for the recovery of petroleum from a well, comprising a turbine having an inlet, an outlet and an expansion chamber between said inlet and said outlet; first connecting means connecting the well with said inlet in such a manner as to prevent significant pressure reduction of the petroleum upstream of said chamber; means for separating the petroleum into a nongaseous flowable component and a gaseous component; second connecting means connecting said separating means with said outlet; means for conveying the components from said separating means to at least one location remote from the well and including at least one driven conveying device; and means coupling said turbine to said one conveying device so that said turbine can drive said one conveying device in response to pressure reduction of the petroleum in said chamber.
Claim 2
Dependent Claim
135 words
An installation for the recovery of petroleum from a well, comprising a turbine having an inlet, an outlet and an expansion chamber between said inlet and said outlet; first connecting means connecting the well with said inlet in such a manner as to prevent significant pressure reduction of the petroleum upstream of said chamber; means for separating the petroleum into a nongaseous flowable component and a gaseous component; second connecting means connecting said separating means with said outlet; means for conveying the components from said separating means to at least one location remote from the well and including at least one driven conveying device; and means coupling said turbine to said one conveying device so that said turbine can drive said one conveying device in response to pressure reduction of the petroleum in said chamber.
Claim 3
Dependent Claim
43 words
The installation of claim 1, further comprising a generator, said coupling means including means which couple said turbine to said generator in such a manner that said turbine can drive said generator in response to pressure reduction of the petroleum in said chamber.
Claim 4
Dependent Claim
13 words
The installation of claim 1, wherein said turbine comprises a reversible centrifugal pump.
Claim 5
Dependent Claim
21 words
The installation of claim 1, wherein said coupling means comprises a common shaft for said turbine and said one conveying device.
Claim 6
Dependent Claim
17 words
The installation of claim 4, further comprising an electric motor or generator unit mounted on said shaft.
Claim 7
Dependent Claim
52 words
The installation of claim 1, wherein said turbine has a plurality of stages including a final stage and said outlet is provided at said final stage, said turbine having an additional outlet at another of said stages; and further comprising third connecting means connecting said additional outlet with said second connecting means.
Claim 8
Dependent Claim
13 words
The installation of claim 6, wherein said third connecting means comprises a valve.
Claim 9
Dependent Claim
10 words
The installation of claim 7, wherein said valve is adjustable.
Claim 10
Dependent Claim
58 words
The installation of claim 1, further comprising a generator and an electric conductor extending from said generator to a location remote from the well, said coupling means including means which couples said turbine to said generator in such a manner that said turbine can drive said generator in response to pressure reduction of the petroleum in said chamber.
Claim 11
Dependent Claim
35 words
The installation of claim 9, further comprising an additional driven conveying device at another petroleum well for conveying a petroleum component away from the other well, said conductor being connected to said additional conveying device.
Claim 12
Independent Claim
69 words
A method of recovering petroleum from a well, comprising the steps of withdrawing a stream of the petroleum from the well; subjecting said stream to a pressure reduction; separating said stream into a nongaseous flowable component and a gaseous component subsequent to said pressure reduction; and conveying at least one of said components from the well using at least a portion of the energy derived from said pressure reduction.
Claim 13
Independent Claim
69 words
A method of recovering petroleum from a well, comprising the steps of withdrawing a stream of the petroleum from the well; subjecting said stream to a pressure reduction; separating said stream into a nongaseous flowable component and a gaseous component subsequent to said pressure reduction; and conveying at least one of said components from the well using at least a portion of the energy derived from said pressure reduction.
Claim 14
Dependent Claim
15 words
The method of claim 11, further comprising the step of generating electricity from said energy.
Claim 15
Dependent Claim
20 words
The method of claim 12, further comprising the step of transmitting said electricity to a location remote from the well.
Claim 16
Dependent Claim
18 words
The method of claim 12, further comprising the step of recovering petroleum from another well using said electricity.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-06-02 | 1995-12-02 | 1996-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-06-02 | 1999-12-02 | 2000-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-06-02 | 2003-12-02 | 2004-06-02 | $7700.00 | Window Closed / Lapsed |