US3736983A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Well pump and the method of pumping
Assignee: Individual
•
Filing: 1971-07-26
•
Granted: 1973-06-05
•
Expires: 1991-07-26
Abstract
Abstract A pump for use in wells having a production string in which is mounted pressure tanks into which an air flow is directed in an alternating cycle to pressurize and exhaust said tanks and the novel method of pumping fluid from a well by alternately pressurizing and exhausting air from alternate chambers at timed intervals and on preregulated cycles.
Inventors
- 👤 F Beard
- 👤 N Schwartz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:53
CPC Classifications
F; F04; F04F; F04F1/00; F04F1/06; F04F1/10; F04F1/12
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
63 words
In a pump, a production tubing in a well casing, a plurality of pressure chambers in said tubing at spaced intervals, a source of supply of pressure, pressure lines leading from said source of supply to said pressure chambers, selectively adjustable timing mechanism for actuating the valves controlling the flow of pressure and to pressurize alternate chambers and simultaneously exhaust the other chambers.
Claim 2
Dependent Claim
63 words
In a pump, a production tubing in a well casing, a plurality of pressure chambers in said tubing at spaced intervals, a source of supply of pressure, pressure lines leading from said source of supply to said pressure chambers, selectively adjustable timing mechanism for actuating the valves controlling the flow of pressure and to pressurize alternate chambers and simultaneously exhaust the other chambers.
Claim 3
Dependent Claim
22 words
The device defined in claim 1 having adjustable means in a portion of said pressure lines restricting the flow of pressure therethrough.
Claim 4
Dependent Claim
64 words
The device defined in claim 1 wherein each of said pressure chambers have a section of production tubing extending through the longitudinal axis thereof, and have passageways in said production tubing adjacent the lower ends thereof, for the passage of production fluid into and out of said chambers, and back pressure valves in said tubing adjacent the upper end of each of said chambers.
Claim 5
Dependent Claim
31 words
The device defined in claim 1, having means for controlling the flow of production fluid from said production tubing and means for taking a sample of the production fluid flowing therethrough.
Claim 6
Independent Claim
92 words
The method of pumping production fluid from a well consisting of engineering the well to determine the rate of flow from the formation and the weight of the production fluid, timing the activation of the pump to the time interval indicated, by use of such calculations, forming a production tubing having pressurized chambers at spaced intervals therein and pumping pressure to alternate chambers in said tubing and simultaneously exhausting the remainIng chambers, reducing the flow of pressure to the uppermost chambers to permit the required pressure build up in the lower chambers.
Claim 7
Independent Claim
92 words
The method of pumping production fluid from a well consisting of engineering the well to determine the rate of flow from the formation and the weight of the production fluid, timing the activation of the pump to the time interval indicated, by use of such calculations, forming a production tubing having pressurized chambers at spaced intervals therein and pumping pressure to alternate chambers in said tubing and simultaneously exhausting the remainIng chambers, reducing the flow of pressure to the uppermost chambers to permit the required pressure build up in the lower chambers.
Claim 8
Dependent Claim
28 words
The device defined in claim 1 wherein said source of supply of pressure is gas from another formation than that from which the production fluid is being produced.
References Cited (Backward Citations)
US1197771A
Cited
US1294069A
Cited
US1390085A
Cited
US1604421A
Cited
US2131183A
Cited
US2864317A
Cited
US3138113A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-04 | 1976-12-04 | 1977-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-04 | 1980-12-04 | 1981-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-04 | 1984-12-04 | 1985-06-05 | $7700.00 | Window Closed / Lapsed |