Patent DE960107C successfully refreshed from Google Patents.
Patent US3758238A successfully refreshed from Google Patents.
US3758238A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Free turbine pump
Assignee: Kobe Inc
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Filing: 1972-07-24
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Granted: 1973-09-11
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Expires: 1992-07-24
Abstract
Abstract A turbine oil well pump capable of being run into and out of the well hydraulically. The pump includes an axial flow turbine and an axial flow pump interconnected in end-to-end relation with the turbine above the pump. The turbine has a power fluid intake adjacent its upper end and a spent power fluid exhaust adjacent its lower end. The pump has a well fluid inlet adjacent its upper end, and adjacent the power fluid exhaust, and has a production fluid outlet adjacent its lower end.
Inventors
- 👤 J Erickson
- 👤 Brown F Barton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:59
CPC Classifications
F; F01; F01D; F01D15/00; F01D15/08; F04; F04B; F04B47/00; F04B47/06; F04B47/08; F04B47/10; Y; Y10; Y10S; Y10S415/00; Y10S415/901
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
82 words
In a turbine pump for a well, the combination of: a. an axial flow turbine and an axial flow pump interconnected in end-to-end relation with said turbine above said pump; b. said turbine having a power fluid intake adjacent its upper end and having a spent power fluid exhaust adjacent its lower end; and c. said pump having a well fluid inlet adjacent its upper end, and adjacent said power fluid exhaust, and having a production fluid outlet adjacent its lower end.
Claim 2
Dependent Claim
82 words
In a turbine pump for a well, the combination of: a. an axial flow turbine and an axial flow pump interconnected in end-to-end relation with said turbine above said pump; b. said turbine having a power fluid intake adjacent its upper end and having a spent power fluid exhaust adjacent its lower end; and c. said pump having a well fluid inlet adjacent its upper end, and adjacent said power fluid exhaust, and having a production fluid outlet adjacent its lower end.
Claim 3
Dependent Claim
69 words
A turbine pump as set forth in claim 1 wherein said turbine and said pump are interconnected by a shaft carried by an upper bearing above said turbine and a lower bearing below said pump, said upper bearing being exposed to power fluid in said power fluid intake for lubrication purposes, and said shaft having an axial passage for conveying power fluid to said lower bearing to lubricate same.
Claim 4
Dependent Claim
30 words
A turbine pump according to claim 2 including a middle bearing between said turbine and said pump, said shaft having a lubricating port connecting said passage to said middle bearing.
Claim 5
Dependent Claim
218 words
In a fluid operated, free turbine pump system for a well, the combination of: a. at least two tubings set in the well; b. a free turbine pump of a size to be movable through one of said tubings between the surface and an operating position in the well; c. said turbine pump comprising an axial flow turbine and an axial flow pump interconnected in end-to-end relation with said turbine above said pump; d. said turbine having a power fluid intake adjacent its upper end and having a spent power fluid exhaust adjacent its lower end; f. said pump having a well fluid inlet adjacent its upper end, and adjacent said power fluid exhaust, and having a production fluid outlet adjacent its lower end; g. one of said tubings being a supply tubing for conveying power fluid under pressure downwardly in the well from the surface; h. said power fluid intake communicating with said supply tubing; i. another of said tubings being a production tubing for conveying production fluid upwardly in the well to the surface; j. said production fluid outlet communicating with said production tubing; k. power fluid return means for conveying spent power fluid upwardly in the well from said power fluid exhaust to the surface; and l. said well fluid inlet communicating with the well.
Claim 6
Dependent Claim
218 words
In a fluid operated, free turbine pump system for a well, the combination of: a. at least two tubings set in the well; b. a free turbine pump of a size to be movable through one of said tubings between the surface and an operating position in the well; c. said turbine pump comprising an axial flow turbine and an axial flow pump interconnected in end-to-end relation with said turbine above said pump; d. said turbine having a power fluid intake adjacent its upper end and having a spent power fluid exhaust adjacent its lower end; f. said pump having a well fluid inlet adjacent its upper end, and adjacent said power fluid exhaust, and having a production fluid outlet adjacent its lower end; g. one of said tubings being a supply tubing for conveying power fluid under pressure downwardly in the well from the surface; h. said power fluid intake communicating with said supply tubing; i. another of said tubings being a production tubing for conveying production fluid upwardly in the well to the surface; j. said production fluid outlet communicating with said production tubing; k. power fluid return means for conveying spent power fluid upwardly in the well from said power fluid exhaust to the surface; and l. said well fluid inlet communicating with the well.
Claim 7
Dependent Claim
20 words
A free turbine pump system as defined in claim 4 wherein said power fluid return means is said production tubing.
Claim 8
Dependent Claim
24 words
A free turbine pump system as defined in claim 4 wherein said power fluid return means is a third tubing set in the well.
Claim 9
Dependent Claim
27 words
A free turbine pump system as defined in claim 4 wherein said power fluid return means and said production tubing comprise a casing set in the well.
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) | 1976-09-10 | 1977-03-12 | 1977-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-10 | 1981-03-12 | 1981-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-10 | 1985-03-12 | 1985-09-11 | $7700.00 | Window Closed / Lapsed |