US4449849A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of removing water from earthen pits
Assignee: S AND A OIL FIELD SERVICES Inc
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Filing: 1982-07-19
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Granted: 1984-05-22
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Expires: 2002-07-19
Abstract
Abstract A method of removing water from earthen pits such as the earthen pits commonly used in the drilling of oil and gas wells for containing reserve drilling fluid is provided. By the method, a plurality of spray nozzles are placed around the periphery of the pit, and the nozzles are directed towards the center of the pit. Water from the pit is pumped through the nozzles whereby the water is sprayed towards the center of the pit and removed therefrom by the evaporation thereof.
Inventors
- 👤 Spencer C. Horn
- 👤 Alan A. Mogg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:55
CPC Classifications
E; E21; E21B; E21B21/00; E21B21/06; C; C02; C02F; C02F1/00; C02F1/02; C02F1/04; C02F1/048; E02; E02D; E02D3/00; E02D3/02; E02D3/10; E21B21/063; E21B21/065; E21B41/00; E21B41/005
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
117 words
A method of removing an earthen pit containing aqueous well drilling fluid from the site thereof comprising the steps of: allowing solids suspended in said drilling fluid to settle to the bottom portion of said pit; placing a plurality of spray nozzles around the periphery of said pit, said nozzles being directed towards the center of said pit; pumping water from the top portion of said pit through said spray nozzles whereby said water is sprayed towards the center of said pit until a major portion of said water is removed therefrom by evaporation; and covering the remaining minor portion of water and settled solids and filling in said pit with earth to thereby remove said pit.
Claim 2
Independent Claim
117 words
A method of removing an earthen pit containing aqueous well drilling fluid from the site thereof comprising the steps of: allowing solids suspended in said drilling fluid to settle to the bottom portion of said pit; placing a plurality of spray nozzles around the periphery of said pit, said nozzles being directed towards the center of said pit; pumping water from the top portion of said pit through said spray nozzles whereby said water is sprayed towards the center of said pit until a major portion of said water is removed therefrom by evaporation; and covering the remaining minor portion of water and settled solids and filling in said pit with earth to thereby remove said pit.
Claim 3
Dependent Claim
26 words
The method of claim 1 wherein said spray nozzles are positioned above the surface of water in said pit and are directed downwardly towards said surface.
Claim 4
Dependent Claim
31 words
The method of claim 2 wherein said spray nozzles are directed whereby the water sprayed therefrom contacts the surface of the water in said pit at an angle of about 45°.
Claim 5
Dependent Claim
16 words
The method of claim 1 wherein at least 30 spray nozzles are placed around said pit.
Claim 6
Dependent Claim
54 words
The method of claim 1 which is further characterized to include the step of placing a splash plate in front of each of said spray nozzles whereby water sprayed from said spray nozzles contacts said splash plates causing said water to be further broken up into fine droplets and evaporated at a faster rate.
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) | 1987-05-22 | 1987-11-21 | 1988-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-22 | 1991-11-21 | 1992-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-22 | 1995-11-21 | 1996-05-22 | $7700.00 | Window Closed / Lapsed |