Patent US4084946A successfully refreshed from Google Patents.
US4084946A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drilling mud degasser
Assignee: Individual
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Filing: 1977-05-31
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Granted: 1978-04-18
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Expires: 1997-05-31
Abstract
Abstract Multiple sets of rotary impeller blades and an atomizing screen are located in the path of gas containing fluid, as drilling mud, discharged from a rotary body through a suction degassing chamber, for the purpose of more fully separating the gas from liquid constituents.
Inventors
- 👤 Harry L. Burgess
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:24
CPC Classifications
B; B01; B01D; B01D19/00; B01D19/0042; B01D19/0052; E; E21; E21B; E21B21/00; E21B21/06; E21B21/063; E21B21/067
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
139 words
Degassing apparatus for drilling muds comprising a casing forming a degassing chamber having outer and top walls and a gas discharge opening in said top wall, suction means communicating with said opening, a hollow body extending into said chamber and having an inlet for gas containing mud and peripheral outlet means, power means including a shaft connected to said body for rotating said body to cause centrifugal discharge of mud into the outer portion of said casing, an annular baffle underlying said top wall and said outlet opening, an annular disc rigid with said shaft and extending along said baffle, said top wall, baffle and disc being serially arranged and spaced apart and cooperating to form a labyrinthine path for fluid drawn into said outlet opening, and vanes on said disc for repelling materials suspended in said labyrinthine path.
Claim 2
Dependent Claim
139 words
Degassing apparatus for drilling muds comprising a casing forming a degassing chamber having outer and top walls and a gas discharge opening in said top wall, suction means communicating with said opening, a hollow body extending into said chamber and having an inlet for gas containing mud and peripheral outlet means, power means including a shaft connected to said body for rotating said body to cause centrifugal discharge of mud into the outer portion of said casing, an annular baffle underlying said top wall and said outlet opening, an annular disc rigid with said shaft and extending along said baffle, said top wall, baffle and disc being serially arranged and spaced apart and cooperating to form a labyrinthine path for fluid drawn into said outlet opening, and vanes on said disc for repelling materials suspended in said labyrinthine path.
Claim 3
Dependent Claim
18 words
Degassing apparatus as described in claim 1 in which vanes are provided on opposite sides of said disc.
Claim 4
Dependent Claim
31 words
Degassing apparatus as described in claim 1 further including a vaporizing screen interposed between said body and the casing outer wall and in the path of fluids discharged from said body.
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) | 1981-04-17 | 1981-10-17 | 1982-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-04-17 | 1985-10-17 | 1986-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-04-17 | 1989-10-17 | 1990-04-18 | $7700.00 | Window Closed / Lapsed |