CN103666416A - Water-based high-density anti-collapse drilling fluid with high inhibition property - Google Patents
Water-based high-density anti-collapse drilling fluid with high inhibition property Download PDFInfo
- Publication number
- CN103666416A CN103666416A CN201310732894.9A CN201310732894A CN103666416A CN 103666416 A CN103666416 A CN 103666416A CN 201310732894 A CN201310732894 A CN 201310732894A CN 103666416 A CN103666416 A CN 103666416A
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- CN
- China
- Prior art keywords
- drilling fluid
- caving
- water
- percent
- water base
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Classifications
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- 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
- C09K8/06—Clay-free compositions
- C09K8/12—Clay-free compositions containing synthetic organic macromolecular compounds or their precursors
-
- 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
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/12—Swell inhibition, i.e. using additives to drilling or well treatment fluids for inhibiting clay or shale swelling or disintegrating
-
- 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
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/34—Lubricant additives
Abstract
The invention discloses a water-based high-density anti-collapse drilling fluid with the high inhibition property, which comprises the following components by weight percent: 0.3-0.5 percent of a positive electricity structure agent SDZJ for a drilling fluid, 0.5-1 percent of NPAN-2, 1-3 percent of anti-collapse dilution filtrate reducer SN resin for the drilling fluid, 0.3-0.5 percent of a fluosilicic high temperature resistance viscosity reducer SF-260 for the drilling fluid, and 1-2 percent of a liquid lubricant RH-8501 or 4-10 percent of crude oil. The drilling fluid disclosed by the invention is high in inhibition property and good in anti-collapse effect, can solve the problems of increasing of viscosity shearing and poor liquidity caused by weight increasing of the drilling fluid better, and is proved to play an important role in improving the drilling speed, and reducing accidents and complexity through the laboratory test and field inspection.
Description
Technical field
The present invention relates to a kind of caving-preventing drilling fluid, especially a kind of water base high-density strong rejection capability caving-preventing drilling fluid.
Background technology
Oil field, domestic old liberated area, due to throughout the year water filling and pressure break water flooding recovery in advance, stratum virgin pressure is damaged, reservoir pressure misprogramming, adjusts in well wellbore construction process in old liberated area, often occurs the phenomenons such as oil, gas, water enchroachment (invasion), for guaranteeing the safety in down-hole and construction process, need to carry out equilibrium strata pressure by improving drilling fluid density, at drilling fluid, increase the weight of to be easy to occur leakage in process, dynamic pressure trim point is difficult to grasp; Especially in orientation well construction process, owing to increasing the weight of to cause solids content of drilling fluid to raise, mobility variation, mud cake void is thick, has increased the probability that bit freezing occurs to adhere in orientation well construction, and other down-hole accidents and complexity even occur.
Summary of the invention
Technical problem to be solved by this invention is, provides a kind of under high-density state, and the water base high-density strong rejection capability caving-preventing drilling fluid of inventing for realizing strong rejection capability caving-preventing and lubrication effect, has stronger protection hydrocarbon zone ability.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is: a kind of water base high-density strong rejection capability caving-preventing drilling fluid, the composition that comprises following mass percent: 0.3%-0.5% is inhibitor, 0.5%-1% flow pattern regulator, 1%-3% fluid loss agent, 0.3%-0.5% silicon-fluorine high temperature resistant thinner, 1%-2% lubricant for drilling fluid for drilling fluid, and surplus is clear water.
A kind of water base high-density strong rejection capability caving-preventing drilling fluid, the composition that comprises following mass percent: 0.3%-0.5% is inhibitor, 0.5%-1% flow pattern regulator, 1%-3% fluid loss agent, 0.3%-0.5% silicon-fluorine high temperature resistant thinner, 4%-10% crude oil for drilling fluid for drilling fluid, and surplus is clear water.
Described clear water refers to that salinity is less than 3000ppm after tested, does not contain the process water of tensio-active agent.
Described inhibitor is positive electricity structural agent SDZJ, is that a kind of molecular formula is CH
3cH
2cHOCKCIC
8hC
6h
40 (CH
2o)
10the polymkeric substance of H.
Described fluid loss agent is anti-sloughing diluted filtration reducing agent for drilling fluid SN resin, and molecular formula is [(CH
2)
3c
6h
2oHC
6h
2oHSO
3na] compound of X.
Described flow pattern regulator is hydrolyzed polyacrylonitrile ammonium salt compound NPAN-2, and drilling fluid silicon-fluorine high temperature resistant thinner is SF-260, and molecular formula is C
2h
5siOCF
3cH
3black thick liquid.
Described lubricant is that drilling fluid is used without fluorescence liquid lubricant RH-8501.
The invention has the beneficial effects as follows: strong inhibition capability, anti sloughing effectiveness are good, can solve preferably sticky cut rising, the mobility variation problem of drilling fluid because increasing the weight of to cause, by shop experiment and spot inspection, for improving drilling speed, reduction accident and complexity, play extremely important effect.
Embodiment
Below in conjunction with body embodiment, the present invention is described in further detail:
Water base high-density strong rejection capability caving-preventing drilling fluid of the present invention, the composition that comprises following mass percent: 0.3%-0.5% is inhibitor, 0.5%-1% flow pattern regulator, 1%-3% fluid loss agent, 0.3%-0.5% silicon-fluorine high temperature resistant thinner, 1%-2% lubricant for drilling fluid for drilling fluid, and surplus is clear water.
A kind of water base high-density strong rejection capability caving-preventing drilling fluid, the composition that comprises following mass percent: 0.3%-0.5% is inhibitor, 0.5%-1% flow pattern regulator, 1%-3% fluid loss agent, 0.3%-0.5% silicon-fluorine high temperature resistant thinner, 4%-10% crude oil for drilling fluid for drilling fluid, and surplus is clear water.
Described clear water refers to that salinity is less than 3000ppm after tested, does not contain the process water of tensio-active agent.
Described inhibitor is positive electricity structural agent SDZJ, is that a kind of molecular formula is CH
3cH
2cHOCKCIC
8hC
6h
40 (CH
2o)
10the polymkeric substance of H, its outward appearance is white liquid; Inhibitor, in order to improve drilling fluid inhibition, makes clay be difficult for aquation and disperses.
Described fluid loss agent is anti-sloughing diluted filtration reducing agent for drilling fluid SN resin, and molecular formula is [(CH
2)
3c
6h
2oHC
6h
2oHSO
3na] compound of X, outward appearance is blackyellow or gray solid powder; Play the free water in drilling fluid is become to irreducible water, anti-sealing infiltrates stratum and drilling cuttings aquation.
Described flow pattern regulator is hydrolyzed polyacrylonitrile ammonium salt compound NPAN-2, and drilling fluid silicon-fluorine high temperature resistant thinner is SF-260, and molecular formula is C
2h
5siOCF
3cH
3black thick liquid, flow pattern regulator is mainly used in improving drilling fluid flow pattern and temperature resistance ability.
Described lubricant is that drilling fluid is used without fluorescence liquid lubricant RH-8501.
Embodiment
Material is prepared: water base high-density strong rejection capability caving-preventing drilling fluid of the present invention, comprises the composition of following mass percent: positive electricity structural agent SDZJ, 0.5%-1% hydrolyzed polyacrylonitrile ammonium salt NPAN-2,1%-3% anti-sloughing diluted filtration reducing agent for drilling fluid SN resin, silicon-fluorine high temperature resistant thinner SF-260,1%-2% liquid lubricant RH-8501 or 4%-10% crude oil for 0.3%-0.5% drilling fluid for 0.3%-0.5% drilling fluid.
Described positive electricity structural agent (SDZJ) for drilling fluid, manufacturer is Binzhou municipal moral Petroleum Technology Co., Ltd.
Hydrolyzed polyacrylonitrile ammonium salt compound (NPAN-2), manufacturer is Shijiazhuang Hualai Dingsheng Technology Co., Ltd..
Anti-collapse dilution fluid loss agent for drilling fluid (SN resin), manufacturer is Shijiazhuang Hualai Dingsheng Technology Co., Ltd..
Silicon-fluorine high temperature resistant thinner for drilling fluid (SF-260), manufacturer is Hebei Guigu Chemical Co., Ltd.
Construction process:
1, two open pre-treatment
Bored after the abundant well-flushing of cement plug, one spudding well liquid is diluted with water to usage quantity, then carry out pre-treatment, add positive electricity structural agent (SDZJ) for 0.3-0.5% drilling fluid, 0.5-1% hydrolyzed polyacrylonitrile ammonium salt compound (NPAN-2), property of drilling fluid is adjusted into density 1.03-1.05g/cm3, Marsh funnel viscosity 33s left and right, gets final product two and opens.(fluid loss agent, lubricant be drilled into corresponding stratum add by formula rate)
2, safeguard and process
First 2.1 2 will prevent that tackiness drilling cuttings is in sticking to the borehole wall and surface string after opening, and the use of drilling fluid is stickyly cut to master with low for this reason, and Marsh funnel viscosity 30-35s is advisable, and can produce and effectively carry and clean annular space.
2.2 for strengthening the strong rejection capability of drilling fluid, suppress pulping, control drilling cuttings dispersion and bentonite content and rise to master, property of drilling fluid will reach " two low one suitable ", i.e. low solid phase, low dehydration, suitable sticky cutting, often creep into positive electricity structural agent (SDZJ) 50～100kg for 100～200m offset drilling liquid, safeguard the hydrolyzed polyacrylonitrile ammonium salt compound (NPAN-2) that adopts concentration 1-2%; Guarantee that SDZJ, NPAN-2 effective content in drilling fluid meets formula requirement.
2.3 enter the well section that easily collapses will strictly control drilling fluid dehydration, add in time 1% non-fluorescence collapse-proof agent, and supplement with boring in time, guarantee that its effective content is at 1-3%, be beneficial to the formation of high-quality mud cake, strengthening the shutoff wall building ability of drilling fluid, improve the stability of well, is the subsurface environment of wellbore construction creation safely and fast.Specific performance API filtration≤5ml, mud cake < 0.5mm.
Before 2.4 orientation well deflectings, add liquid lubricant 1% to reduce frictional resistance, enter build section according to frictional resistance situation at any time liquid make-up lubricant to 2% left and right; As hole deviation large (being greater than 45 °) or horizontal well are used crude oil as lubricant, dosage is 4-10%; And composite use solid lubricant reduction frictional resistance, after increasing the weight of, keep the mobility that drilling fluid is good, prevent that drilling cuttings and ground barium sulfate from adhering to the borehole wall, avoids the generation of backing pressure and bit freezing situation.
If 2.5 increase the weight of that rear drilling fluid is sticky to be cut higherly, mobility variation, can adopt the drilling fluid of 0.3-0.5% to process with silicon-fluorine high temperature resistant thinner, improves flow pattern.
In sum, content of the present invention is not limited in the above-described embodiment, and the knowledgeable people in same area can propose easily other embodiment within technical director's thought of the present invention, but this embodiment comprises within the scope of the present invention.
Claims (7)
1. a water base high-density strong rejection capability caving-preventing drilling fluid, it is characterized in that, the composition that comprises following mass percent: 0.3%-0.5% is inhibitor, 0.5%-1% flow pattern regulator, 1%-3% fluid loss agent, 0.3%-0.5% silicon-fluorine high temperature resistant thinner, 1%-2% lubricant for drilling fluid for drilling fluid, and surplus is clear water.
2. a water base high-density strong rejection capability caving-preventing drilling fluid, it is characterized in that, the composition that comprises following mass percent: 0.3%-0.5% is inhibitor, 0.5%-1% flow pattern regulator, 1%-3% fluid loss agent, 0.3%-0.5% silicon-fluorine high temperature resistant thinner, 4%-10% crude oil for drilling fluid for drilling fluid, and surplus is clear water.
3. water base high-density strong rejection capability caving-preventing drilling fluid according to claim 1 and 2, is characterized in that, described clear water refers to that salinity is less than 3000ppm after tested, does not contain the process water of tensio-active agent.
4. water base high-density strong rejection capability caving-preventing drilling fluid according to claim 1 and 2, is characterized in that, described inhibitor is positive electricity structural agent SDZJ, is that a kind of molecular formula is CH
3cH
2cHOCKCIC
8hC
6h
40 (CH
2o)
10the polymkeric substance of H.
5. water base positive electricity according to claim 1 and 2 suppresses by force caving-preventing drilling fluid, it is characterized in that, described fluid loss agent is anti-sloughing diluted filtration reducing agent for drilling fluid SN resin, and molecular formula is [(CH
2)
3c
6h
2oHC
6h
2oHSO
3na] compound of X.
6. water base high-density strong rejection capability caving-preventing drilling fluid according to claim 1 and 2, is characterized in that, described flow pattern regulator is hydrolyzed polyacrylonitrile ammonium salt compound NPAN-2, and drilling fluid silicon-fluorine high temperature resistant thinner is SF-260, and molecular formula is C
2h
5siOCF
3cH
3black thick liquid.
7. water base positive electricity according to claim 1 suppresses by force caving-preventing drilling fluid, it is characterized in that, described lubricant is that drilling fluid is used without fluorescence liquid lubricant RH-8501.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310732894.9A CN103666416A (en) | 2013-12-19 | 2013-12-19 | Water-based high-density anti-collapse drilling fluid with high inhibition property |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310732894.9A CN103666416A (en) | 2013-12-19 | 2013-12-19 | Water-based high-density anti-collapse drilling fluid with high inhibition property |
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| Publication Number | Publication Date |
|---|---|
| CN103666416A true CN103666416A (en) | 2014-03-26 |
Family
ID=50305207
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310732894.9A Pending CN103666416A (en) | 2013-12-19 | 2013-12-19 | Water-based high-density anti-collapse drilling fluid with high inhibition property |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104962256A (en) * | 2015-06-17 | 2015-10-07 | 成都高普石油工程技术有限公司 | Preparation process of positive-charged polyglycol anti-sloughing drilling fluid |
| CN105295874A (en) * | 2014-06-19 | 2016-02-03 | 成都棕通石油配件有限公司 | Mud for large borehole drilling |
| CN113073952A (en) * | 2021-03-31 | 2021-07-06 | 中国石油化工股份有限公司 | On-site treatment process of starch-based drilling fluid |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1923945A (en) * | 2006-09-14 | 2007-03-07 | 中国石化集团江苏石油勘探局 | Double protection drilling fluid and method of using the same |
| CN101368090A (en) * | 2008-09-19 | 2009-02-18 | 宋福如 | Process for preparing silicon-fluorine high temperature resistant thinner dry powder for drilling fluids |
| CN102010695A (en) * | 2010-11-07 | 2011-04-13 | 大庆石油管理局 | Organosilicon polysulfonate drilling fluid |
-
2013
- 2013-12-19 CN CN201310732894.9A patent/CN103666416A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1923945A (en) * | 2006-09-14 | 2007-03-07 | 中国石化集团江苏石油勘探局 | Double protection drilling fluid and method of using the same |
| CN101368090A (en) * | 2008-09-19 | 2009-02-18 | 宋福如 | Process for preparing silicon-fluorine high temperature resistant thinner dry powder for drilling fluids |
| CN102010695A (en) * | 2010-11-07 | 2011-04-13 | 大庆石油管理局 | Organosilicon polysulfonate drilling fluid |
Non-Patent Citations (3)
| Title |
|---|
| 张志迅: "庆深气田钻井液技术研究", 《中国石油和化工标准与质量》, no. 04, 30 April 2011 (2011-04-30) * |
| 胡景东等: "滩海大位移水平井钻井液工艺技术", 《钻井液与完井液》, vol. 26, no. 06, 30 November 2009 (2009-11-30) * |
| 陈德铭等: "蒙古国塔木察格油田钻井液技术", 《钻井液与完井液》, vol. 27, no. 06, 30 November 2010 (2010-11-30) * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105295874A (en) * | 2014-06-19 | 2016-02-03 | 成都棕通石油配件有限公司 | Mud for large borehole drilling |
| CN104962256A (en) * | 2015-06-17 | 2015-10-07 | 成都高普石油工程技术有限公司 | Preparation process of positive-charged polyglycol anti-sloughing drilling fluid |
| CN113073952A (en) * | 2021-03-31 | 2021-07-06 | 中国石油化工股份有限公司 | On-site treatment process of starch-based drilling fluid |
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Application publication date: 20140326 |