CN105505343A - Filtrate-loss reducer, filtrate-loss reducer composition and preparation method thereof - Google Patents
Filtrate-loss reducer, filtrate-loss reducer composition and preparation method thereof Download PDFInfo
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- CN105505343A CN105505343A CN201510847218.5A CN201510847218A CN105505343A CN 105505343 A CN105505343 A CN 105505343A CN 201510847218 A CN201510847218 A CN 201510847218A CN 105505343 A CN105505343 A CN 105505343A
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- fluid loss
- loss agent
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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
- C09K8/03—Specific additives for general use in well-drilling compositions
- C09K8/035—Organic additives
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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
- C09K8/32—Non-aqueous well-drilling compositions, e.g. oil-based
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- Organic Chemistry (AREA)
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Abstract
The invention provides a filtrate-loss reducer, its filtrate-loss reducer composition and a preparation method thereof, and belongs to the field of drilling fluid technology. The filtrate-loss reducer is sulfonated resin, which is one of olefin sulfonate or a copolymer of derivatives or a mixture of the above ingredients. The filtrate-loss reducer composition contains the filtrate-loss reducer and also comprises asphalt, a surfactant and base oil. According to the filtrate-loss reducer and its composition, sulfonated resin is used as a main component of the filtrate-loss reducer and is compounded with asphalt, etc. on one hand, influence of filtration on drilling rate is reduced, damage to the environment is decreased, and overall filtrate-loss rate is lowered; and on the other hand, product performance is optimized and the product is easy to transport and allocate.
Description
Technical field
The present invention relates to drilling liquid technology field, especially comprise a kind of fluid loss agent, comprise its oil base drilling fluid and preparation method.
Background technology
Drilling fluid is in drilling process, the circulation flushing medium used in hole.Drilling fluid is acknowledged as has following ten kinds of effects at least: at the bottom of (1) clear well, cutting carring.Keep shaft bottom to clean, avoid drill bit Repeated Cutting, reduce wear, raise the efficiency; (2) Cooling and Lubricator drill bit and drill string.Reduce temperature of diamond bit, reduce drill tool wear, improve the work-ing life of drilling tool; (3) balance rock of borehole wall pressure, form filter cake at the borehole wall, close and stabilizing borehole.Prevent the pollution to hydrocarbon zone and slump in.(4) (control) reservoir pressure is balanced.Prevent blowout, leakage, prevent resident fluid to the pollution of drilling fluid; (5) suspension landwaste and weighting agent.Reduce landwaste settling velocity, avoid desilting bit freezing; (6) can sink on ground except sand and landwaste; (7) effectively effective power is transmitted.Transmit mud motor required drive and bit hydraulic power; (8) the part gravity of drilling rod and sleeve pipe is born.Drilling fluid to the buoyancy of drilling tool and sleeve pipe, the load of hoisting system when can reduce to make a trip; (9) great mass of data of drilled strata is provided.Utilize drilling fluid to carry out electrical log, sieve residue log etc. obtain subsurface information; (10) hydrofracture rock.The high-speed jet that drilling fluid is formed by nozzle can direct broken or addi-tional crusher rock.
Oil base drilling fluid is a kind of is dispersion medium with oil, the colloidal sol suspension mixed system being disperse phase with weighting agent, various chemical processing agent and water etc.Oil base drilling fluid owing to having high temperature resistance, salt resistance, be conducive to wellbore stability, oilness is good and to advantages such as formation damage are little, is more and more widely used in the bad ground wells such as drilling deep wells ultra deep well, high-inclination directional well, multilateral well and horizontal well.Fluid loss agent is as the key ingredient in oil base drilling fluid system, Main Function is make drilling fluid on the borehole wall, form the thin and mud cake of densification, reduce filter loss, maintain hole stability and reduce drilling fluid liquid-solid phase invaded formation, infringement hydrocarbon zone, be absolutely necessary one for the treatment of agent.At present, oil base drilling fluid fluid loss agent is mainly divided into high molecular polymer class, humic acid amine, lignin and asphalt product, its medium pitch class fluid loss agent has the advantages such as extensive and low price of drawing materials, be widely used in for some time in the past, but there is the shortcomings such as reduction drilling speed, contaminate environment and dosage are large in pitch class fluid loss agent, during the oil base drilling fluid of environment sensitive region and external most area is filled a prescription at home, its restriction is used.Thus provide a kind of improve drilling speed, little to environmental damage, add the fluid loss agent of dose-effect or its composition has very real meaning.
Summary of the invention
The problem to be solved in the present invention is that existing pitch class fluid loss agent exists the shortcomings such as reduction drilling speed, contaminate environment and dosage are large, is unfavorable for the use of oil base drilling fluid.
First object of the present invention is to provide a kind of fluid loss agent.Described fluid loss agent is sulfate resin.
Further, described sulfate resin is the mixture of one or more in the multipolymer of olefin sulfonic acid or derivatives thereof.
Further, described olefin sulfonic acid is one or more in vinyl sulfonic acid, allyl sulphonic acid, styrene sulfonic acid, acryloyl-oxy butyl sulfonic acid, 2-acrylamido dodecyl sodium sulfonate, 2-acrylamido tetradecyl sulfonic acid, 2-acrylamido hexadecyl sulfonic acid, 2-acryloxy-2-methyl propane sulfonic acid and 2-acrylamide-2-methylpro panesulfonic acid.As, described sulfate resin can be 2-acrylamide-2-methylpro panesulfonic acid, acrylamide and N, the multipolymer of N '-methylene-diacrylamide, 2-acrylamide-2-methylpro panesulfonic acid, the multipolymer of acrylamide and N-vinyl-N-alkylamide, the multipolymer of vinyl amine and vinyl sulfonic acid, the multipolymer of sulfonated phenylethylene and maleic anhydride, the multipolymer of 2-acrylamide-2-methylpro panesulfonic acid and N-alkyl acrylamide, 2-acrylamide-2-methylpro panesulfonic acid, the polymkeric substance of acrylamide and cationic monomer, 2-acrylamide-2-methylpro panesulfonic acid, the polymkeric substance of acrylamide and methylene-succinic acid, 2-acrylamide-2-methylpro panesulfonic acid, the polymkeric substance of acrylamide and vinyl pyrrolidone, 2-acrylamide-2-methylpro panesulfonic acid, acrylamide, the ionic tetrapolymer of dimethyl diallyl ammonia chloride and maleic acid, (2-acryloyl-oxy)-isopentene sodium sulfonate and acrylamide, acrylic acid multipolymer, sulphur Methacrylamide, the polymkeric substance of cationic monomer and acrylamide, a series of sulfate resins such as the elastic microsphere of alkyl sulfonate acrylic ester suspension polymerization.
Further, described sulfate resin is the graft copolymer of sulfonated polymer monomer and humic acid.Humic acid is a class is black or brown unformed macromole natural compounds, because containing multiple functional group in himself structure, there is wetting ability, complex ability and stronger absorption dispersive ability, be usually selected as the main raw producing heat resisting fluid loss reducing agent.Humic acid is normally water miscible, can not be directly used in oil base drilling fluid, needs, to its oleophylic modification, just can be dispersed in oil base drilling fluid, and humic acid and common sulfonated monomers are carried out the sulfate resin that graft copolymerization can obtain another kind of type.
Second object of the present invention is to provide a kind of fluid loss agent composition.Described fluid loss agent composition comprises above-mentioned fluid loss agent, also comprises pitch, tensio-active agent and base oil.Tensio-active agent is the common oil base drilling fluid tensio-active agent such as sulfonate, stearate, alkyl polyoxyethylene alcohol ether, sorbitan fatty acid ester.
Preferably, described base oil is the mixture of one or more in white oil, diesel oil, vegetables oil, gas liquefaction or biofuel.
Preferably, described pitch is oxidized bitumen or sulfonated gilsonite.
Further, described fluid loss agent composition, counts by weight, comprises following component: white oil 5 parts, pitch 10 ~ 20 parts, 3 ~ 10 parts, tensio-active agent, sulfate resin 30 ~ 50 parts.
Preferably, described fluid loss agent composition, counts by weight, comprises following component: base oil 5 parts, pitch 12 ~ 16 parts, 4 ~ 8 parts, tensio-active agent, sulfate resin 35 ~ 45 parts.
3rd object of the present invention is to provide the preparation method of above-mentioned fluid loss agent composition, and it comprises the following steps:
(1) add sulfate resin by behind asphalt heating to 110 ~ 130 DEG C, stir and obtain mixture A;
(2) maintain the temperature of mixture A at 110 ~ 130 DEG C, add base oil in the mixture, after holding temperature stirs, obtain mixture B;
(3) stir with tensio-active agent after mixture B being slowly down to room temperature, leave standstill afterwards, be drying to obtain.
The advantage that the present invention has and positively effect are:
1. fluid loss agent provided by the invention and composition thereof, sulfate resin is adopted to be fluid loss agent main body, form with pitch etc. is composite, reduce the impact of filtering on drilling speed on the one hand, reduce the damage to environment, reduce overall leak-off rate, optimize the performance of product on the other hand, be easy to transport and allotment.
2. sulfate resin provided by the invention is as fluid loss agent, has good high temperature resistant property, and it, for using multiple copolymer, reduces the desorption of fluid loss agent during high temperature, enhance the stability of filter cake.
3. in the present invention by sulfate resin and pitch, tensio-active agent and base oil are composite forms fluid loss agent composition, and repetition test goes out its optimal components ratio, preparation method simply easily controls, the fluid loss agent composition obtained is solid form, stable in properties, particle are tiny and be evenly distributed, and the configuration being beneficial to oil base drilling fluid uses.
Embodiment
For a better understanding of the present invention, below in conjunction with specific embodiment, the present invention is conducted further description.
Embodiment 1
A kind of fluid loss agent composition, counts by weight, comprises following component: white oil 5 parts, pitch 10 parts, 5 parts, tensio-active agent, sulfate resin 30 parts.
Wherein, described pitch or sulfonated gilsonite, described tensio-active agent is be the common oil base drilling fluid tensio-active agent such as sulfonate, stearate, alkyl polyoxyethylene alcohol ether, sorbitan fatty acid ester.Described sulfate resin is the multipolymer of olefin sulfonic acid, and described olefin sulfonic acid is one or more in vinyl sulfonic acid, allyl sulphonic acid, styrene sulfonic acid, acryloyl-oxy butyl sulfonic acid, 2-acrylamido dodecyl sodium sulfonate, 2-acrylamido tetradecyl sulfonic acid, 2-acrylamido hexadecyl sulfonic acid, 2-acryloxy-2-methyl propane sulfonic acid and 2-acrylamide-2-methylpro panesulfonic acid.
When preparing above-mentioned fluid loss agent composition, implement according to following steps:
(1) add sulfate resin after sulfonated gilsonite being heated to 115 DEG C, stir and obtain mixture A;
(2) maintain the temperature of mixture A at 115 DEG C, add white oil in the mixture, after holding temperature stirs, obtain mixture B;
(3) stir with tensio-active agent after mixture B being slowly down to room temperature, leave standstill afterwards, 50 DEG C of vacuum-dryings and get final product.
Embodiment 2
A kind of fluid loss agent composition, counts by weight, comprises following component: diesel oil 5 parts, pitch 15 parts, 8 parts, tensio-active agent, sulfate resin 35 parts.
Wherein, described pitch is oxidized bitumen, and described tensio-active agent is be the common oil base drilling fluid tensio-active agent such as sulfonate, stearate, alkyl polyoxyethylene alcohol ether, sorbitan fatty acid ester.Described sulfate resin is the graft copolymer of sulfonated polymer monomer and humic acid.Sulfonated polymer monomer is monomer conventional arbitrarily, as olefin sulfonic acid, described olefin sulfonic acid is one or more in vinyl sulfonic acid, allyl sulphonic acid, styrene sulfonic acid, acryloyl-oxy butyl sulfonic acid, 2-acrylamido dodecyl sodium sulfonate, 2-acrylamido tetradecyl sulfonic acid, 2-acrylamido hexadecyl sulfonic acid, 2-acryloxy-2-methyl propane sulfonic acid and 2-acrylamide-2-methylpro panesulfonic acid.
When preparing above-mentioned fluid loss agent composition, implement according to following steps:
(1) add sulfate resin after oxidized bitumen being heated to 120 DEG C, stir and obtain mixture A;
(2) maintain the temperature of mixture A at 120 DEG C, add diesel oil in the mixture, after holding temperature stirs, obtain mixture B;
(3) stir with tensio-active agent after mixture B being slowly down to room temperature, leave standstill afterwards, Air drying and get final product.
Embodiment 3
A kind of fluid loss agent composition, counts by weight, comprises following component: vegetables oil 2 parts, white oil 3 parts, pitch 16 parts, 9 parts, tensio-active agent, sulfate resin 50 parts.
Wherein, described pitch is sulfonated gilsonite, and described surfactant is be the common oil base drilling fluid tensio-active agent such as sulfonate, stearate, alkyl polyoxyethylene alcohol ether, sorbitan fatty acid ester.Described sulfate resin can be 2-acrylamide-2-methylpro panesulfonic acid, acrylamide and N, the multipolymer of N '-methylene-diacrylamide, 2-acrylamide-2-methylpro panesulfonic acid, the multipolymer of acrylamide and N-vinyl-N-alkylamide, the multipolymer of vinyl amine and vinyl sulfonic acid, the multipolymer of sulfonated phenylethylene and maleic anhydride, the multipolymer of 2-acrylamide-2-methylpro panesulfonic acid and N-alkyl acrylamide, 2-acrylamide-2-methylpro panesulfonic acid, the polymkeric substance of acrylamide and cationic monomer, 2-acrylamide-2-methylpro panesulfonic acid, the polymkeric substance of acrylamide and methylene-succinic acid, 2-acrylamide-2-methylpro panesulfonic acid, the polymkeric substance of acrylamide and vinyl pyrrolidone, 2-acrylamide-2-methylpro panesulfonic acid, acrylamide, the ionic tetrapolymer of dimethyl diallyl ammonia chloride and maleic acid, (2-acryloyl-oxy)-isopentene sodium sulfonate and acrylamide, acrylic acid multipolymer, sulphur Methacrylamide, the polymkeric substance of cationic monomer and acrylamide, a series of sulfate resins such as the elastic microsphere of alkyl sulfonate acrylic ester suspension polymerization.
When preparing above-mentioned fluid loss agent composition, implement according to following steps:
(1) add sulfate resin after sulfonated gilsonite being heated to 124 DEG C, stir and obtain mixture A;
(2) maintain the temperature of mixture A at 124 DEG C, add white oil and vegetables oil in the mixture, after holding temperature stirs, obtain mixture B;
(3) stir with tensio-active agent after mixture B being slowly down to room temperature, leave standstill afterwards, 40 DEG C of vacuum-dryings and get final product.
Embodiment 4
A kind of fluid loss agent composition, counts by weight, comprises following component: biofuel 3 parts, white oil 2 parts, pitch 14 parts, 7 parts, tensio-active agent, sulfate resin 45 parts.
Wherein, described pitch is oxidized bitumen, and described surfactant is be the common oil base drilling fluid tensio-active agent such as sulfonate, stearate, alkyl polyoxyethylene alcohol ether, sorbitan fatty acid ester.Described sulfate resin is sulfonated-pheno-formoldehyde resin and sulfonated lignin.
When preparing above-mentioned fluid loss agent composition, implement according to following steps:
(1) add sulfate resin after oxidized bitumen being heated to 130 DEG C, stir and obtain mixture A;
(2) maintain the temperature of mixture A at 130 DEG C, add white oil and biofuel in the mixture, after holding temperature stirs, obtain mixture B;
(3) stir with tensio-active agent after mixture B being slowly down to room temperature, standing, normal pressure and temperature is drying to obtain afterwards.
Test the fluid loss agent composition that above-described embodiment obtains, the result obtained is as shown in the table:
As seen from the above table, fluid loss agent composition provided by the invention, has lower filtrate reducing amount, thus reduces the leak-off rate of drilling fluid.The fluid loss agent composition that the present invention obtains is solid form, and stable in properties, particle are tiny and be evenly distributed, and the configuration being beneficial to oil base drilling fluid uses.
Above embodiments of the invention have been described in detail, but described content being only preferred embodiment of the present invention, can not being considered to for limiting practical range of the present invention.All equalizations done according to the scope of the invention change and improve, and all should still belong within this patent covering scope.
Claims (10)
1. a fluid loss agent, is characterized in that: described fluid loss agent is sulfate resin.
2. fluid loss agent according to claim 1, is characterized in that: described sulfate resin is the mixture of one or more in the multipolymer of olefin sulfonic acid or derivatives thereof, sulfonated-pheno-formoldehyde resin, sulfonated lignin.
3. fluid loss agent according to claim 1, is characterized in that: described olefin sulfonic acid is one or more in vinyl sulfonic acid, allyl sulphonic acid, styrene sulfonic acid, acryloyl-oxy butyl sulfonic acid, 2-acrylamido dodecyl sodium sulfonate, 2-acrylamido tetradecyl sulfonic acid, 2-acrylamido hexadecyl sulfonic acid, 2-acryloxy-2-methyl propane sulfonic acid and 2-acrylamide-2-methylpro panesulfonic acid.
4., according to the arbitrary described fluid loss agent of claim 1-3, it is characterized in that: described sulfate resin is the graft copolymer of sulfonated polymer monomer and humic acid.
5. a fluid loss agent composition, comprises the fluid loss agent described in claim 1-4, it is characterized in that: also comprise pitch, tensio-active agent and base oil.
6. fluid loss agent composition according to claim 5, is characterized in that: described base oil is one or more mixture in white oil, diesel oil, vegetables oil, gas liquefaction or biofuel.
7. fluid loss agent composition according to claim 5, is characterized in that: described pitch is oxidized bitumen or sulfonated gilsonite.
8., according to the arbitrary described fluid loss agent composition of claim 5-7, it is characterized in that: count by weight, comprise following component: base oil 5 parts, pitch 10 ~ 20 parts, 3 ~ 10 parts, tensio-active agent, sulfate resin 30 ~ 50 parts.
9. fluid loss agent composition according to claim 8, is characterized in that: count by weight, comprises following component: base oil 5 parts, pitch 12 ~ 16 parts, 4 ~ 8 parts, tensio-active agent, sulfate resin 35 ~ 45 parts.
10. the preparation method of the fluid loss agent composition according to claim 5-9, is characterized in that: comprise the following steps:
(1) add sulfate resin by behind asphalt heating to 110 ~ 130 DEG C, stir and obtain mixture A;
(2) maintain the temperature of mixture A at 110 ~ 130 DEG C, add base oil in the mixture, after holding temperature stirs, obtain mixture B;
(3) stir with tensio-active agent after mixture B being slowly down to room temperature, leave standstill afterwards, be drying to obtain.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510847218.5A CN105505343A (en) | 2015-11-26 | 2015-11-26 | Filtrate-loss reducer, filtrate-loss reducer composition and preparation method thereof |
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| CN201510847218.5A CN105505343A (en) | 2015-11-26 | 2015-11-26 | Filtrate-loss reducer, filtrate-loss reducer composition and preparation method thereof |
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| CN105505343A true CN105505343A (en) | 2016-04-20 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111139039A (en) * | 2018-11-02 | 2020-05-12 | 中国石油化工股份有限公司 | Sulfonated phenolic resin graft modified polymer filtrate reducer and preparation method thereof |
| CN111139042A (en) * | 2018-11-02 | 2020-05-12 | 中国石油化工股份有限公司 | Resin modified polymer fluid loss agent based on degradation and preparation method thereof |
| CN111925778A (en) * | 2020-08-19 | 2020-11-13 | 安徽陆海石油助剂科技有限公司 | Anti-collapse and filtrate loss reducing agent white asphalt for drilling fluid |
| CN114891489A (en) * | 2022-03-24 | 2022-08-12 | 长江大学 | Non-sulfonated high-temperature-resistant water-based drilling fluid |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102199417A (en) * | 2010-03-23 | 2011-09-28 | 张以河 | Technology for preparing mineral composite solid lubricant for well drilling on basis of by-products in chemical industry |
-
2015
- 2015-11-26 CN CN201510847218.5A patent/CN105505343A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102199417A (en) * | 2010-03-23 | 2011-09-28 | 张以河 | Technology for preparing mineral composite solid lubricant for well drilling on basis of by-products in chemical industry |
Non-Patent Citations (1)
| Title |
|---|
| 王中华等: "《油田化学品实用手册》", 31 July 2004 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111139039A (en) * | 2018-11-02 | 2020-05-12 | 中国石油化工股份有限公司 | Sulfonated phenolic resin graft modified polymer filtrate reducer and preparation method thereof |
| CN111139042A (en) * | 2018-11-02 | 2020-05-12 | 中国石油化工股份有限公司 | Resin modified polymer fluid loss agent based on degradation and preparation method thereof |
| CN111139039B (en) * | 2018-11-02 | 2022-06-10 | 中国石油化工股份有限公司 | Sulfonated phenolic resin graft modified polymer filtrate reducer and preparation method thereof |
| CN111139042B (en) * | 2018-11-02 | 2022-06-10 | 中国石油化工股份有限公司 | Resin modified polymer fluid loss agent based on degradation and preparation method thereof |
| CN111925778A (en) * | 2020-08-19 | 2020-11-13 | 安徽陆海石油助剂科技有限公司 | Anti-collapse and filtrate loss reducing agent white asphalt for drilling fluid |
| CN114891489A (en) * | 2022-03-24 | 2022-08-12 | 长江大学 | Non-sulfonated high-temperature-resistant water-based drilling fluid |
| CN114891489B (en) * | 2022-03-24 | 2023-10-10 | 长江大学 | Non-sulfonated high-temperature-resistant water-based drilling fluid |
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