CN108795395A - A kind of caving-preventing drilling fluid - Google Patents
A kind of caving-preventing drilling fluid Download PDFInfo
- Publication number
- CN108795395A CN108795395A CN201710286143.7A CN201710286143A CN108795395A CN 108795395 A CN108795395 A CN 108795395A CN 201710286143 A CN201710286143 A CN 201710286143A CN 108795395 A CN108795395 A CN 108795395A
- Authority
- CN
- China
- Prior art keywords
- parts
- drilling fluid
- caving
- preventing drilling
- attapulgite
- 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
- C09K8/04—Aqueous well-drilling compositions
- C09K8/14—Clay-containing compositions
- C09K8/18—Clay-containing compositions characterised by the organic compounds
- C09K8/22—Synthetic organic compounds
- C09K8/24—Polymers
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- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Medicinal Preparation (AREA)
- Materials For Medical Uses (AREA)
- Dental Preparations (AREA)
Abstract
The invention discloses a kind of caving-preventing drilling fluids, and meter includes the following raw material in parts by weight：35-48 parts of 18-32 parts of calcium carbonate, high glutinous 16-40 parts of polyanion cellulose, 5-17 parts of hydroxyethyl ethylenediamine, 11-21 parts of polyacrylic acid amide and attapulgite.Advantage is：The drilling fluid can prevent the intrusion of drilling fluid in drilling process, and the change of wettability of rock surface can reduce the generation of Water-blocking damage, prevent being in direct contact between reservoir rock surface and outside fluid, avoid the generation of formation damage.
Description
Technical field
The invention belongs to drilling fluid field more particularly to a kind of caving-preventing 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 one kind have preferable rheological property, heat-resisting property, caving-preventing characteristic and
The caving-preventing drilling fluid of reservoir protection performance.
Technical solution：Caving-preventing drilling fluid of the present invention, meter includes the following raw material in parts by weight：18-32 parts of calcium carbonate, height are glutinous
16-40 parts of polyanion cellulose, 5-17 parts of hydroxyethyl ethylenediamine, 11-21 parts of polyacrylic acid amide and attapulgite 35-48
Part.
Preferably, calcium carbonate 20-30 parts；Glutinous 25-35 parts of the polyanion cellulose of height；Hydroxyethyl ethylenediamine 10-15；Poly- third
15-20 parts of enoic；40-45 parts of attapulgite.
Advantageous effect：Compared with prior art, remarkable advantage of the invention is：The drilling fluid can be prevented in drilling process
The only intrusion of drilling fluid, and the change of wettability of rock surface can reduce the generation of Water-blocking damage, prevent reservoir rock table
Being in direct contact between face and outside fluid avoids the generation of formation damage.
Specific implementation mode
Embodiment 1
Raw material：20 parts of calcium carbonate, high glutinous 25 parts of polyanion cellulose, hydroxyethyl ethylenediamine 10, polyacrylic acid amide 15
40 parts of part and attapulgite.
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, high glutinous 35 parts of polyanion cellulose, hydroxyethyl ethylenediamine 15, polyacrylic acid amide 20
45 parts of part and attapulgite.
Preparation method：After above-mentioned raw materials are mixed in parts by weight, stirring can be prepared by drilling fluid.
Embodiment 3
18 parts of calcium carbonate, high glutinous 16 parts of polyanion cellulose, 5 parts of hydroxyethyl ethylenediamine, 11 parts of polyacrylic acid amide and
35 parts of attapulgite
Preparation method：After above-mentioned raw materials are mixed in parts by weight, stirring can be prepared by drilling fluid.
Embodiment 4
32 parts of calcium carbonate, high glutinous 40 parts of polyanion cellulose, 17 parts of hydroxyethyl ethylenediamine, 21 parts of polyacrylic acid amide and
48 parts of attapulgite
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 caving-preventing drilling fluid, it is characterised in that meter includes the following raw material in parts by weight：18-32 parts of calcium carbonate, high stick are gathered
35-48 parts of 16-40 parts of anionic cellulose, 5-17 parts of hydroxyethyl ethylenediamine, 11-21 parts of polyacrylic acid amide and attapulgite.
2. caving-preventing drilling fluid according to claim 1, it is characterised in that：Described calcium carbonate 20-30 parts.
3. caving-preventing drilling fluid according to claim 1, it is characterised in that：High glutinous 25-35 parts of the polyanion cellulose.
4. caving-preventing drilling fluid according to claim 1, it is characterised in that：Described hydroxyethyl ethylenediamine 10-15 parts.
5. caving-preventing drilling fluid according to claim 1, it is characterised in that：Described polyacrylic acid amide 15-20 parts.
6. caving-preventing drilling fluid according to claim 1, it is characterised in that：Described attapulgite 40-45 parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710286143.7A CN108795395A (en) | 2017-04-27 | 2017-04-27 | A kind of caving-preventing drilling fluid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710286143.7A CN108795395A (en) | 2017-04-27 | 2017-04-27 | A kind of caving-preventing drilling fluid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108795395A true CN108795395A (en) | 2018-11-13 |
Family
ID=64069628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710286143.7A Pending CN108795395A (en) | 2017-04-27 | 2017-04-27 | A kind of caving-preventing drilling fluid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108795395A (en) |
-
2017
- 2017-04-27 CN CN201710286143.7A patent/CN108795395A/en active Pending
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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 |