CN105219362A - A kind of method for making of efficient anti-collapse leakproof drilling fluid - Google Patents
A kind of method for making of efficient anti-collapse leakproof drilling fluid Download PDFInfo
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- CN105219362A CN105219362A CN201510534956.4A CN201510534956A CN105219362A CN 105219362 A CN105219362 A CN 105219362A CN 201510534956 A CN201510534956 A CN 201510534956A CN 105219362 A CN105219362 A CN 105219362A
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- drilling fluid
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- lubricant
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- salt solution
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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
- C09K8/14—Clay-containing compositions
- C09K8/18—Clay-containing compositions characterised by the organic compounds
- C09K8/20—Natural organic compounds or derivatives thereof, e.g. polysaccharides or lignin derivatives
- C09K8/206—Derivatives of other natural products, e.g. cellulose, starch, sugars
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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
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/34—Lubricant additives
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- Dispersion Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Silicates, Zeolites, And Molecular Sieves (AREA)
Abstract
A kind of method for making of efficient anti-collapse leakproof drilling fluid, belong to field of oilfield chemistry, it is characterized in that, described drilling fluid is made up of the raw material of following weight percent: sodium bentonite 1-6%, high-density weighting material 1-10%, lubricant 0.5-1%, oxidized bitumen 0.7-3%, water glass 1-3%, unslaked lime 1-4%, sodium hydroxide 0.5-2%, cotton seed hull powder 0.7-2%, deionized water 30%-40%, all the other are salt solution.Its method for making comprises the steps: the first prehydration in deionized water of sodium bentonite 24 hours, join again in salt solution, then high-density weighting material, lubricant, oxidized bitumen, water glass, unslaked lime, sodium hydroxide is added in proportion, stir 2 hours respectively, finally add cotton seed hull powder and stir 1 hour.Efficient anti-collapse leakproof drilling fluid provided by the invention, by the batching selected and suitable proportioning, can obtain the product of anti-collapse good leak-proof effect, can cram, and preparation method be simple to different ground layer gaps.
Description
Technical field
The present invention relates to a kind of method for making of efficient anti-collapse leakproof drilling fluid, belong to technical field of oilfield chemistry.
Background technology
Drilling fluid is for one of equilibrium strata pressure, the indispensable material ensureing the smooth drilling well of safety in drilling process.In drilling process, leakage is reservoir pressure when being less than fluid column pressure, and the working fluids such as drilling fluid, well finishing liquid, workover fluid bleed the phenomenon on stratum in a large number.Leakage can cause down-hole accident or complexcase, causes the engineering time to extend, and operating cost increases, and even Oil/gas Well is scrapped, and causes a large amount of financial losses.In order to prevent drilling fluid to bleed stratum, or can successful shutoff leakage channel fast after missing, recover drilling well as early as possible, select anti-collapse leakproof drilling fluid to be very necessary.At present, the anti-collapse leak preventing effect of drilling fluid that uses of oil drilling bad.
Summary of the invention
In order to solve technical problem existing in background technology, the invention provides a kind of method for making of efficient anti-collapse leakproof drilling fluid, by selecting suitable drilling fluid materials, preventing drilling fluid to bleed stratum and have good effect in the shutoff of leakage channel, and method for making is simple.
Technical solution of the present invention is:
A kind of method for making of efficient anti-collapse leakproof drilling fluid, described drilling fluid is made up of the raw material of following weight percent: sodium bentonite 1-6%, high-density weighting material 1-10%, lubricant 0.5-1%, oxidized bitumen 0.7-3%, water glass 1-3%, white lime 1-4%, sodium hydroxide 0.5-2%, cotton seed hull powder 0.7-2%, deionized water 3%-18%, all the other are salt solution (sodium chloride content is more than 1%), and wherein deionized water addition can infiltrate sodium bentonite.
High-density weighting material is one in ground barium sulfate, powdered iron ore, ilmenite powder or its any mixture.
Lubricant is inert lubricant, can select one or more in plastic pellet, graphite, carbon black, glass microballon.
Wherein, what adopt in the present invention is the sodium bentonite meeting API standard, and mud yield is higher; The interpolation of high-density weighting material, can improve the density of drilling fluid, overcomes high pressure formation and stabilizing borehole; Sodium carbonate, white lime, sodium hydroxide, clay can generate lime blocking agent; Adopt cotton seed hull powder can cram the gap of 1.5mm.
Its preparation method is: sodium bentonite is prehydration 24 hours in the deionized water of infiltration amount first.Join again in salt solution, then add high-density weighting material, lubricant, oxidized bitumen, water glass, white lime, sodium hydroxide in proportion, stir 2 hours respectively, finally add cotton seed hull powder and stir 1 hour.
Because inorganic salt have certain restraining effect to bentonitic aquation dispersion, therefore, wilkinite is different with the mud yield in salt solution at deionized water, and salt solution mud yield is generally lower.By wilkinite first prehydration in deionized water, and then add in salt solution and can improve its mud yield in salt solution.Salt-water drilling fluid, has salinity high, stronger inhibition, effectively can suppress shale hydration, ensures wellbore stability, and saline-alkaline tolerance is strong, and it is also strong that anticalcium invades high-temperature resistance; Due to filtrate character and stratum ecosystem water relatively, formation injury lighter.
Advantage of the present invention is: the present invention is by selecting suitable raw material, and proportioning can obtain the good drilling fluid of effect, can be crammed by adding of organic and inorganic blocking agent to the ground layer gap of different size; Preparation method of the present invention is simple to operate, and by first sodium bentonite being changed in deionized water in advance, then add in salt solution, improve mud yield.
Embodiment
Be further detailed below in conjunction with specific embodiment
Embodiment 1
Batching (weight percent)
Sodium bentonite 2%, ground barium sulfate 2%, graphite 0.6%, oxidized bitumen 0.8%, water glass 2%, white lime 2%, sodium hydroxide 2%, cotton seed hull powder 1%, deionized water 6% (or infiltration amount), all the other are salt solution containing 1.2%NaCl.
Preparation method: sodium bentonite deionized water good for proportioning is changed 24 hours in advance, join in the salt solution containing 1.2%NaCl, ground barium sulfate 2%, graphite 0.6%, oxidized bitumen 0.8%, water glass 2%, white lime 2%, sodium hydroxide 2% is added again by proportioning, stir 2 hours respectively, finally add cotton seed hull powder 1%, stir 1 hour.
Embodiment 2
Batching (mass percent)
Sodium bentonite 6%, ground barium sulfate 10%, graphite 0.8%, oxidized bitumen 1%, water glass 2%, white lime 2%, sodium hydroxide 2%, cotton seed hull powder 2%, deionized water 18%, all the other are salt solution containing 1%NaCl.
Preparation method: sodium bentonite 6% good for proportioning is changed 24 hours in advance with fresh water, join in the salt solution containing 1%NaCl, ground barium sulfate 10%, graphite 0.8%, oxidized bitumen 1%, water glass 2%, white lime 2%, sodium hydroxide 2% is added again by proportioning, stir 2 hours respectively, finally add cotton seed hull powder 2%, stir 1 hour.
Claims (4)
1. a method for making for efficient anti-collapse leakproof drilling fluid, it is characterized in that, described drilling fluid is made up of the raw material of following weight percent:
Sodium bentonite 1-6%, high-density weighting material 1-10%, lubricant 0.5-1%, oxidized bitumen 0.7-3%, water glass 1-3%, white lime 1-4%, sodium hydroxide 0.5-2%, cotton seed hull powder 0.7-2%, deionized water 3-18%, all the other are salt solution, sodium chloride content >=1wt% in described salt solution;
Its method for making comprises the steps: the first prehydration in deionized water of sodium bentonite 24 hours, join again in salt solution, then high-density weighting material, lubricant, oxidized bitumen, water glass, white lime, sodium hydroxide is added in proportion, stir 2 hours respectively, finally add cotton seed hull powder and stir 1 hour.
2. the method for making of efficient anti-collapse leakproof drilling fluid according to claim 1, is characterized in that, described high-density weighting material is one in ground barium sulfate, powdered iron ore, ilmenite powder or its any mixture.
3. the method for making of efficient anti-collapse leakproof drilling fluid according to claim 1, it is characterized in that, described lubricant is inert lubricant.
4. the method for making of efficient anti-collapse leakproof drilling fluid according to claim 3, it is characterized in that, described inert lubricant is the one in plastic pellet, graphite, carbon black, glass microballon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510534956.4A CN105219362A (en) | 2015-08-27 | 2015-08-27 | A kind of method for making of efficient anti-collapse leakproof drilling fluid |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510534956.4A CN105219362A (en) | 2015-08-27 | 2015-08-27 | A kind of method for making of efficient anti-collapse leakproof drilling fluid |
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| CN105219362A true CN105219362A (en) | 2016-01-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510534956.4A Pending CN105219362A (en) | 2015-08-27 | 2015-08-27 | A kind of method for making of efficient anti-collapse leakproof drilling fluid |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107176803A (en) * | 2017-05-18 | 2017-09-19 | 中国水电基础局有限公司 | A kind of cut-pff wall positive colloid fixed wall mud and its application |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7226895B2 (en) * | 2004-04-06 | 2007-06-05 | Baker Hughes Incorporated | Drilling fluid systems for reducing circulation losses |
| CN103320102A (en) * | 2013-07-03 | 2013-09-25 | 中国石油集团川庆钻探工程有限公司 | Drilling fluid for drilling horizontal well by filling nitrogen |
| CN103911131A (en) * | 2014-03-27 | 2014-07-09 | 中国石油集团川庆钻探工程有限公司长庆钻井总公司 | Drilling fluid and preparation method thereof |
| CN104559967A (en) * | 2013-10-27 | 2015-04-29 | 中国石油化工集团公司 | Superhigh-density high-temperature-resistant saturated salt-water drilling fluid and preparation method thereof |
-
2015
- 2015-08-27 CN CN201510534956.4A patent/CN105219362A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7226895B2 (en) * | 2004-04-06 | 2007-06-05 | Baker Hughes Incorporated | Drilling fluid systems for reducing circulation losses |
| CN103320102A (en) * | 2013-07-03 | 2013-09-25 | 中国石油集团川庆钻探工程有限公司 | Drilling fluid for drilling horizontal well by filling nitrogen |
| CN104559967A (en) * | 2013-10-27 | 2015-04-29 | 中国石油化工集团公司 | Superhigh-density high-temperature-resistant saturated salt-water drilling fluid and preparation method thereof |
| CN103911131A (en) * | 2014-03-27 | 2014-07-09 | 中国石油集团川庆钻探工程有限公司长庆钻井总公司 | Drilling fluid and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 乌效鸣等: "《钻井液与岩土工程浆材》", 31 July 2014, 中国地质大学出版社 * |
| 郑晓宇等: "《油田化学品》", 31 January 2001, 化学工业出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107176803A (en) * | 2017-05-18 | 2017-09-19 | 中国水电基础局有限公司 | A kind of cut-pff wall positive colloid fixed wall mud and its application |
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| PB01 | Publication | ||
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Application publication date: 20160106 |