GB2621092A - Apparatus and method for processing drill cuttings - Google Patents
Apparatus and method for processing drill cuttings Download PDFInfo
- Publication number
- GB2621092A GB2621092A GB2317877.5A GB202317877A GB2621092A GB 2621092 A GB2621092 A GB 2621092A GB 202317877 A GB202317877 A GB 202317877A GB 2621092 A GB2621092 A GB 2621092A
- Authority
- GB
- United Kingdom
- Prior art keywords
- gas
- tank
- outlet
- outlets
- cuttings
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005520 cutting process Methods 0.000 title claims abstract 23
- 238000000034 method Methods 0.000 title claims 21
- 239000012530 fluid Substances 0.000 claims abstract 12
- 239000000725 suspension Substances 0.000 claims abstract 3
- 238000002347 injection Methods 0.000 claims abstract 2
- 239000007924 injection Substances 0.000 claims abstract 2
- 125000006850 spacer group Chemical group 0.000 claims 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/01—Arrangements for handling drilling fluids or cuttings outside the borehole, e.g. mud boxes
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/06—Arrangements for treating drilling fluids outside the borehole
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
- Drilling Tools (AREA)
Abstract
A drill cuttings processing tank has a cuttings inlet and outlet, a gas supply, and first and second gas outlets spaced apart from one another within the tank. A gas injection controller controls flow of gas from the first and second gas outlets in sequence. Gas flows from the first gas outlet into the tank before gas flows from the second gas outlet into the tank. Flowing the gas from the outlets submerged in the fluid suspension of drill cuttings creates a bubble in the fluid which rises through the fluid and mixes it, maintaining the cuttings in suspension within the fluid.
Claims (26)
- Claims1 A method of processing drill cuttings generated from a well, the method comprising: conveying the cuttings to a tank, the tank having an cuttings inlet for passage of drill cuttings into the tank, a cuttings outlet for passage of drill cuttings from the tank, a gas supply for supply of gas into the tank, and at least first and second gas outlets connected to the gas supply and spaced apart from one another within the tank; wherein the method comprises flowing gas from the first and second gas outlets in a sequence wherein gas flows from the first gas outlet into the tank before gas flows from the second gas outlet into the tank.
- 2 A method as claimed in claim 1, wherein the tank has more than two gas outlets.
- 3 A method as claimed in claim 1 or claim 2, wherein the first gas outlet is spaced further from the cuttings outlet than the second gas outlet.
- 4 A method as claimed in claim 3, wherein the first and second gas outlets have valves that can be selectively actuated to open or close the respective gas outlets, and wherein the valves are actuated by a control mechanism in the form of a programmable logic controller (PLC).
- 5 A method as claimed in any preceding claim, including creating a bubble in the fluid at each gas outlet which rises through the fluid in the tank thereby maintains the cuttings in suspension within the fluid as a result.
- 6 A method as claimed in any preceding claim, wherein spatially adjacent outlets in the tank emit respective bubbles at adjacent steps in the sequence.
- 7 A method as claimed in claim 6, wherein a plurality of bubbles are simultaneously emitted from an outlet in a single step of the process.
- 8 A method as claimed in claim 7, wherein the plurality of bubbles rise independently at the same speed through the fluid in the tank.
- 9 A method as claimed in claim 8, wherein the bubbles diverge laterally from the outlet as they rise in the fluid.
- 10 A method as claimed in any preceding claim wherein the sequence of gas flow incorporates a delay between the cessation of gas flow from the first outlet and the commencement of gas flow from the second outlet.
- 11 A method as claimed in claim 10, wherein the delay between the cessation of gas flow from the first outlet and the commencement of gas flow from the second outlet is longer than the length of time between commencement and cessation of flow of gas from the first gas outlet.
- 12 A method as claimed in any preceding claim, wherein the first and second valve outlets are open for the same amount of time.
- 13 A method as claimed in any preceding claim, wherein there are more than two gas outlets, connected in first and second sets of gas outlets to the gas supply, and wherein the sequence is programmable to flow gas to the first set of outlets independently of the second set of outlets.
- 14 A method as claimed in any preceding claim, wherein the sequence repeats.
- 15 A method as claimed in any preceding claim, wherein the gas outlets are submerged within fluid in the tank at or near an inner surface of a bottom of the tank, such that gas emitted from the gas outlets form bubbles which rise vertically through fluid in the tank.
- 16 A method as claimed in any preceding claim wherein at least one first gas outlet is spaced further from the drill cuttings outlet of the tank than at least one second gas outlet, and wherein sequential flow of the gas through the first and second outlets moves the cuttings within the tank in a horizontal plane toward the outlet.
- 17 A drill cuttings processing tank adapted to process drill cuttings generated from a well, the tank comprising: a cuttings inlet for passage of drill cuttings into the tank, a cuttings outlet for passage of drill cuttings from the tank, a gas supply for supply of gas into the tank, and at least first and second gas outlets connected to the gas supply and spaced apart from one another within the tank; a gas injection controller adapted to control the flow of gas from the first and second gas outlets in a sequence, wherein gas flows from the first gas outlet into the tank before gas flows from the second gas outlet into the tank.
- 18 A tank as claimed in claim 17, wherein the first and second gas outlets have valves that can be selectively actuated to open or close the respective gas outlets.
- 19 A tank as claimed in claim 17 or 18, wherein the controller comprises a programmable logic controller (PLC).
- 20 A tank as claimed in any one of claims 17-19, wherein the controller is arranged to stop gas flow from the first outlet before gas flow from the second outlet starts.
- 21 A tank as claimed in any one of claims 17-20, wherein gas flow from each of the first and second gas outlets in the fluid in the tank is intermittent.
- 22 A tank as claimed in any one of claims 17-21, wherein the first gas outlet is spaced further from the cuttings outlet than the second gas outlet.
- 23 A gas outlet assembly for a drill cuttings storage tank, the gas outlet assembly comprising: first and second plates arranged mutually parallel and spaced apart from one another, and having a gas outlet adapted for connection to a gas supply line, the gas outlet being disposed between the first and second plates.
- 24 A gas outlet assembly as claimed in claim 23, wherein the gas outlet assembly has a feed pipe extending through one of the plates, and opening into the space between the plates to form the outlet, and wherein the plates are divided circumferentially by at least two spacers.
- 25 A gas outlet assembly as claimed in claim 23 or 24, wherein the plates are circular, and have the same diameter.
- 26 A tank as claimed in any one of claims 17-22 including a gas outlet assembly as claimed in any one of claims 23-25.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB202106684 | 2021-05-11 | ||
| PCT/GB2022/051180 WO2022238693A1 (en) | 2021-05-11 | 2022-05-10 | Apparatus and method for processing drill cuttings |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB2621092A true GB2621092A (en) | 2024-01-31 |
Family
ID=81750641
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2317877.5A Pending GB2621092A (en) | 2021-05-11 | 2022-05-10 | Apparatus and method for processing drill cuttings |
Country Status (3)
| Country | Link |
|---|---|
| GB (1) | GB2621092A (en) |
| NO (1) | NO20231236A1 (en) |
| WO (1) | WO2022238693A1 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1842372A (en) * | 1929-03-30 | 1932-01-26 | Allison John Raymond | Method of desanding rotary mud |
| US4595296A (en) * | 1984-02-06 | 1986-06-17 | Parks Richard E | Method and apparatus for gas induced mixing and blending |
| WO2011036556A2 (en) * | 2009-09-25 | 2011-03-31 | Schlumberger Norge As | Multiple process service vessel |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2010324537B2 (en) | 2009-11-30 | 2015-08-27 | Pentair Flow Control Pacific Pty Ltd | Cuttings wash apparatus and method |
| WO2015160374A1 (en) | 2014-04-14 | 2015-10-22 | Halliburton Energy Services, Inc. | Mobile drilling fluid plant |
| CN112252978A (en) | 2020-10-22 | 2021-01-22 | 中海油能源发展股份有限公司 | Experimental device for simulation ocean module rig shunting box air agitation |
-
2022
- 2022-05-10 NO NO20231236A patent/NO20231236A1/en unknown
- 2022-05-10 GB GB2317877.5A patent/GB2621092A/en active Pending
- 2022-05-10 WO PCT/GB2022/051180 patent/WO2022238693A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1842372A (en) * | 1929-03-30 | 1932-01-26 | Allison John Raymond | Method of desanding rotary mud |
| US4595296A (en) * | 1984-02-06 | 1986-06-17 | Parks Richard E | Method and apparatus for gas induced mixing and blending |
| WO2011036556A2 (en) * | 2009-09-25 | 2011-03-31 | Schlumberger Norge As | Multiple process service vessel |
Also Published As
| Publication number | Publication date |
|---|---|
| NO20231236A1 (en) | 2023-11-14 |
| WO2022238693A1 (en) | 2022-11-17 |
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