CN108795396A - A kind of high density drilling fluid - Google Patents
A kind of high density drilling fluid Download PDFInfo
- Publication number
- CN108795396A CN108795396A CN201710286090.9A CN201710286090A CN108795396A CN 108795396 A CN108795396 A CN 108795396A CN 201710286090 A CN201710286090 A CN 201710286090A CN 108795396 A CN108795396 A CN 108795396A
- Authority
- CN
- China
- Prior art keywords
- parts
- drilling fluid
- high density
- density drilling
- closure
- 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
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/02—Well-drilling compositions
- C09K8/32—Non-aqueous well-drilling compositions, e.g. oil-based
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- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a kind of high density drilling fluids, and meter includes the following raw material in parts by weight：31-45 parts of 15-30 parts of calcium carbonate, 9-27 parts of amphoteric ion polyacrylamide, 11-29 parts of maleic anhydride, 24-33 parts of Sorbitan acid alcohol ester, 17-27 parts of acrylic acid and sepiolite.Advantage is that drilling fluid closure speed is fast, closure range is wide, plugging effect is good; and it unidirectionally blocks, be easy to counter mediate without de-plugging operation, closure and remove; it is weak to Reservoir Fracture wide dependency, the reservoir protection ability of drilling fluid can be improved, the ability of drilling fluid stabilizing borehole is improved.
Description
Technical field
The invention belongs to drilling fluid field more particularly to a kind of high density drilling fluids.
Background technology
Drilling fluid is the circulation flushing medium used in hole in drilling process.Drilling fluid is the blood of drilling well, is also known as drilled
Flushing liquor.Drilling fluid can be divided into clear water, mud, free clay phase flushing liquor, emulsion, foam and compressed air by constituent
Deng.Clear water is to use earliest drilling fluid, easy to use without processing, suitable for complete rock stratum and the area having abundant water resources.Mud
Slurry is widely used drilling fluid, is primarily adapted for use in the hole walls such as loose, cranny development, easy collapsing and breaking, water-swellable peeling not
Stablize rock stratum.
Invention content
Goal of the invention：The object of the present invention is to provide a kind of closure speed, fast and closure is easy to the anti-high density brill mediated and removed
Well liquid.
Technical solution：High density drilling fluid of the present invention, meter includes the following raw material in parts by weight：15-30 parts of calcium carbonate, two
9-27 parts of cationic polyacrylamide of property, 11-29 parts of maleic anhydride, 24-33 parts of Sorbitan acid alcohol ester, 17-27 parts of acrylic acid and
31-45 parts of sepiolite.
Preferably, amphoteric ion polyacrylamide 15-20 parts；15-25 parts of maleic anhydride；Sorbitan acid alcohol ester 28-30
Part；20-25 parts of acrylic acid；35-40 parts of sepiolite.
Advantageous effect：Compared with prior art, remarkable advantage of the invention is：Drilling fluid closure speed is fast, blocks model
Enclose that wide, plugging effect is good, and it is unidirectional block, without de-plugging operation, block and be easy to counter mediate and remove, to Reservoir Fracture wide dependency
It is weak, the reservoir protection ability of drilling fluid can be improved, the ability of drilling fluid stabilizing borehole is improved.
Specific implementation mode
Embodiment 1
Raw material：15 parts of calcium carbonate, 15 parts of amphoteric ion polyacrylamide, 15 parts of maleic anhydride, Sorbitan acid alcohol ester 28
35 parts of part, 20 parts of acrylic acid and sepiolite.
Preparation method：After above-mentioned raw materials are mixed in parts by weight, stirring can be prepared by drilling fluid.
Embodiment 2
Raw material：30 parts of calcium carbonate, 20 parts of amphoteric ion polyacrylamide, 25 parts of maleic anhydride, Sorbitan acid alcohol ester 30
40 parts of part, 25 parts of acrylic acid and sepiolite.
Preparation method：After above-mentioned raw materials are mixed in parts by weight, stirring can be prepared by drilling fluid.
Embodiment 3
Raw material：15 parts of calcium carbonate, 9 parts of amphoteric ion polyacrylamide, 11 parts of maleic anhydride, Sorbitan acid alcohol ester 24
31 parts of part, 17 parts of acrylic acid and sepiolite.
Preparation method：After above-mentioned raw materials are mixed in parts by weight, stirring can be prepared by drilling fluid.
Embodiment 4
Raw material：30 parts of calcium carbonate, 27 parts of amphoteric ion polyacrylamide, 29 parts of maleic anhydride, Sorbitan acid alcohol ester 33
45 parts of part, 27 parts of acrylic acid and sepiolite.
Preparation method：After above-mentioned raw materials are mixed in parts by weight, stirring can be prepared by drilling fluid.
Claims (6)
1. a kind of high density drilling fluid, it is characterised in that meter includes the following raw material in parts by weight：15-30 parts of calcium carbonate, both sexes
9-27 parts of cationic polyacrylamide, 11-29 parts of maleic anhydride, 24-33 parts of Sorbitan acid alcohol ester, 17-27 parts of acrylic acid and sea
31-45 parts of afrodite.
2. high density drilling fluid according to claim 1, it is characterised in that：The amphoteric ion polyacrylamide 15-20
Part.
3. high density drilling fluid according to claim 1, it is characterised in that：Described maleic anhydride 15-25 parts.
4. high density drilling fluid according to claim 1, it is characterised in that：28-30 parts of the Sorbitan acid alcohol ester.
5. high density drilling fluid according to claim 1, it is characterised in that：Described acrylic acid 20-25 parts.
6. high density drilling fluid according to claim 1, it is characterised in that：Described sepiolite 35-40 parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710286090.9A CN108795396A (en) | 2017-04-27 | 2017-04-27 | A kind of high density drilling fluid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710286090.9A CN108795396A (en) | 2017-04-27 | 2017-04-27 | A kind of high density drilling fluid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108795396A true CN108795396A (en) | 2018-11-13 |
Family
ID=64069616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710286090.9A Pending CN108795396A (en) | 2017-04-27 | 2017-04-27 | A kind of high density drilling fluid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108795396A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115926073A (en) * | 2022-12-02 | 2023-04-07 | 西南石油大学 | Nano calcium carbonate modified acrylamide amphoteric copolymer and preparation method thereof |
-
2017
- 2017-04-27 CN CN201710286090.9A patent/CN108795396A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115926073A (en) * | 2022-12-02 | 2023-04-07 | 西南石油大学 | Nano calcium carbonate modified acrylamide amphoteric copolymer and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20181113 |
|
| WD01 | Invention patent application deemed withdrawn after publication |