CN110982497B - Preparation method of high-temperature-resistant filtrate reducer for oil-based drilling fluid - Google Patents
Preparation method of high-temperature-resistant filtrate reducer for oil-based drilling fluid Download PDFInfo
- Publication number
- CN110982497B CN110982497B CN201911377268.6A CN201911377268A CN110982497B CN 110982497 B CN110982497 B CN 110982497B CN 201911377268 A CN201911377268 A CN 201911377268A CN 110982497 B CN110982497 B CN 110982497B
- Authority
- CN
- China
- Prior art keywords
- parts
- temperature
- drilling fluid
- oil
- based drilling
- 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.)
- Active
Links
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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Lubricants (AREA)
Abstract
The invention belongs to the field of drilling fluid additives, and particularly discloses a preparation method of a high-temperature-resistant fluid loss additive for an oil-based drilling fluid. The fluid loss agent is prepared from the following components in parts by weight: 50-60 parts of lignite, 3-9 parts of sodium hydroxide, 1-2 parts of hydrochloric acid, 8-15 parts of dioctadecyl trimethyl ammonium chloride, 15-20 parts of octadecyl dimethyl benzyl ammonium bromide, 8-12 parts of naphthenic acid amide and 180-220 parts of tap water. In the preparation process, the purification process of the lignite is added, the product performance is improved, the obtained product has good salt calcium resistance and 220 ℃ high-temperature resistance, the difficulties that the drilling speed of machinery is influenced by domestic asphalt, the machinery is toxic and polluted are overcome, and the technical index can reach the same level abroad.
Description
The present application is a divisional application of the following applications: the application date is 20161107, the application number is 201610976365.7, and the patent name is high-temperature resistant fluid loss additive for oil-based drilling fluid and a preparation method thereof.
Technical Field
The invention belongs to the field of drilling fluid additives, and particularly relates to a preparation method of a high-temperature-resistant fluid loss additive for an oil-based drilling fluid.
Background
The main components of the mud for the oil field drilling fluid are common soil, water and various auxiliary chemical additives. In the continuous drilling process, the phenomenon that water enters the stratum is called water loss, and the water loss in unit time is too large, so that a series of adverse consequences can be brought: collapse of well wall, shrinkage of well wall, thickening of drilling fluid and the like, thereby causing vicious accidents such as drilling sticking and the like. In order to reduce the filtration of water to stratum during drilling and ensure the well safety and the smooth drilling engineering, a filtrate reducer is required to be added.
Common fluid loss additives for well drilling are:
the carboxymethyl cellulose sodium salt and the polyanionic cellulose have good universality, good filtrate loss reducing effect and strong salt tolerance; but the temperature resistance is low and is only 150 ℃.
Modified starches: the composite material mainly comprises pregelatinized starch, carboxymethyl starch and hydroxyethyl starch, and has good universality, good fluid loss reducing effect and strong salt tolerance; but the temperature resistance is low and is only 120-140 ℃.
Humic acid salts: sodium humate, potassium humate, chromium iron humate, nitrate humate and the like, and has good universality and better temperature resistance. But the fluid loss reducing effect is general, the using amount is large, and the cost is high.
Copolymers and polyacrylates: the composite material is composed of different monomers such as sodium acrylate, calcium acrylate, acrylamide and monomers with sulfonic groups and organic cationic groups, and has good comprehensive performance and good temperature resistance. But has influence on the viscosity of the drilling fluid (has thickening effect), is used for low solid phase drilling fluid, and has higher production cost and complex production process.
Aiming at the problems of the prior filtrate reducer for well drilling, the invention develops a filtrate reducer for well drilling, which has the advantages of less dosage, low well drilling cost, good temperature and salt resistance, no pollution and self decomposition in natural environment through a large number of experimental researches.
Disclosure of Invention
The invention aims to solve the first technical problem of providing a high-temperature-resistant fluid loss additive for an oil-based drilling fluid, which is prepared from the following components in parts by weight: 50-60 parts of lignite, 3-9 parts of sodium hydroxide, 1-2 parts of hydrochloric acid, 8-15 parts of dioctadecyl trimethyl ammonium chloride, 15-20 parts of octadecyl dimethyl benzyl ammonium bromide, 8-12 parts of naphthenic acid amide and 180-220 parts of tap water.
The second technical problem to be solved by the invention is to provide a preparation method of the high-temperature-resistant fluid loss additive for the oil-based drilling fluid, which comprises the following steps:
adding 180-220 parts of tap water into a reaction kettle, starting stirring, slowly adding 3-9 parts of sodium hydroxide, heating to 90-100 ℃, slowly adding 50-60 parts of lignite, performing an alkalization reaction for 0.8-1.2 h, pumping into a filter tank, filtering out impurities, pumping back into the reaction kettle, adding 1-2 parts of hydrochloric acid, and adjusting the pH value to 5-6; then slowly adding 8-15 parts of dioctadecyl trimethyl ammonium chloride and 15-20 parts of octadecyl dimethyl benzyl ammonium bromide, heating to 130-140 ℃, and reacting for 3.5-4.5 h at constant temperature. And (3) adding naphthenic acid amide to react for 1.6-2.4 hours after the temperature is reduced to 90-100 ℃, completing the reaction, and then performing spray drying and crushing to obtain a final product.
In the preparation method of the high-temperature-resistant fluid loss additive for the oil-based drilling fluid, the stirring speed is 50-60 r/min.
In the preparation method of the high-temperature-resistant filtrate reducer for the oil-based drilling fluid, the HCl mass content in the hydrochloric acid is 30%.
In the preparation method of the high-temperature-resistant fluid loss additive for the oil-based drilling fluid, the particle size of the final product is 80 meshes, and the passing rate of the final product is more than or equal to 90%.
The invention has the beneficial effects that: the product of the invention has excellent fluid loss reduction effect, good salt calcium resistance and temperature resistance (capable of resisting 220 ℃), and overcomes the difficulties that the domestic asphalt influences the mechanical drilling speed, is toxic and has pollution; the technical index can reach the same level abroad; the emulsion has good compatibility, does not influence the rheological property of the slurry system after being added into the slurry system, and can play a certain auxiliary emulsifying capacity and stabilize the slurry system; the drilling fluid can be softened and deformed at a certain temperature, has excellent plugging effect and is a brand-new environment-friendly drilling fluid additive; the product can be suitable for deep wells and high-difficulty wells of white oil-based and diesel oil-based drilling fluids, and is small in dosage, and the effect can be achieved by generally adding 1-4%. In addition, the product has wide raw material sources and simple preparation process, and the lignite purification process is added in the production process, so that the product performance is greatly improved; and the wet production is adopted, so that the reaction efficiency is greatly improved, and the product performance is improved.
Detailed Description
The invention provides a high-temperature-resistant fluid loss additive for an oil-based drilling fluid, which is prepared from the following components in parts by weight: 50-60 parts of lignite, 3-9 parts of sodium hydroxide, 1-2 parts of hydrochloric acid, 8-15 parts of dioctadecyl trimethyl ammonium chloride, 15-20 parts of octadecyl dimethyl benzyl ammonium bromide, 8-12 parts of naphthenic acid amide and 180-220 parts of tap water.
Further, the invention also provides a preparation method of the high-temperature-resistant fluid loss additive for the oil-based drilling fluid, which comprises the following steps:
adding 180-220 parts of tap water into a reaction kettle, starting stirring, slowly adding 3-9 parts of sodium hydroxide, heating to 90-100 ℃, slowly adding 50-60 parts of lignite, performing an alkalization reaction for 0.8-1.2 h, pumping into a filter tank, filtering out impurities, pumping back into the reaction kettle, adding 1-2 parts of hydrochloric acid, and adjusting the pH value to 5-6; then adding 8-15 parts of dioctadecyl trimethyl ammonium chloride and 15-20 parts of octadecyl dimethyl benzyl ammonium bromide slowly, heating to 130-140 ℃ and reacting for 3.5-4.5 h. And then cooling to 90-100 ℃, adding naphthenic acid amide to react for 1.6-2.4 h, after the reaction is finished, spray drying, and crushing to obtain the final product, wherein the passing rate of the 80-mesh sieve is more than or equal to 90%.
In the preparation method of the high-temperature-resistant fluid loss additive for the oil-based drilling fluid, the stirring speed is 50-60 r/min.
In the preparation method of the high-temperature-resistant filtrate reducer for the oil-based drilling fluid, the HCl mass content in the hydrochloric acid is 30%.
The high-temperature resistant filtrate reducer for the oil-based drilling fluid is a high-temperature resistant filtrate reducer for the high-performance oil-based drilling fluid, which is synthesized by using purified lignite, sodium hydroxide, hydrochloric acid, dioctadecyl trimethyl ammonium chloride, octadecyl dimethyl benzyl ammonium bromide, naphthenic acid amide and the like as main raw materials. The product has little influence on the flow pattern of the drilling fluid and has obvious fluid loss reducing effect. The plugging agent can soften and deform at a certain temperature, has excellent plugging effect, and can remarkably reduce the filtration loss of the oil-based drilling fluid. The product has good temperature stability, and can resist temperature of above 200 deg.C. The product is different from asphalt filtrate reducer, can not reduce the mechanical drilling speed, and has good environmental protection performance. The product has no adverse effect on the rheological property of an oil-based drilling fluid system, and has good compatibility with other treating agents in the same system. The oil-based drilling fluid has the effect of reducing the fluid loss, can be directly added into the drilling fluid in the using process, has excellent effect, and is non-toxic and environment-friendly.
The invention is further illustrated and described with reference to the following examples, which do not limit the scope of the invention.
Example 1
The high-temperature resistant fluid loss additive for the oil-based drilling fluid is prepared by the following method:
adding 200 parts by weight of tap water into a reaction kettle, starting stirring (the rotating speed is 55r/min), then slowly adding 6 parts by weight of sodium hydroxide, then heating to 95 ℃, slowly adding 55 parts by weight of lignite, performing alkalization reaction for 1 hour, then pumping into a filter tank, filtering out impurities, then pumping back into the reaction kettle, and adding 1-2 parts by weight of hydrochloric acid (the mass content of HCl is 30%) to adjust the pH value to 5-6; then 11 parts of dioctadecyl trimethyl ammonium chloride and 19 parts of octadecyl dimethyl benzyl ammonium bromide are added slowly, and the temperature is raised to 135 ℃ for reaction for 4 hours. Then cooling to 95 ℃, adding naphthenic acid amide for reaction for 2h, then carrying out spray drying and crushing until the 80-mesh sieve passing rate is more than or equal to 90 percent to obtain the final product.
Example 2 evaluation of drilling fluid Performance
1. The base slurry formula comprises: no. 5 white oil 246mL +6g organic soil + lime 6g +14.3g emulsifier + wetting agent 2.5g + (42mL water +15g calcium chloride +750g barite).
2. Performance evaluation: the demulsification voltage, the rheological property and the high-temperature high-pressure filtration loss of the drilling fluid are tested by adopting a conventional test method in the field, and the test results are shown in table 1.
(1) And demulsification voltage: after aging, the demulsification voltage Es (V) of the base slurry and the asphalt after aging is greatly reduced, and the change range of the base slurry and the product of the embodiment 1 before and after aging is very small, so that the asphalt has a large influence on the stability of the drilling fluid, and the product of the invention has no influence.
(2) Rheological property: the apparent AV viscosity of the base slurry and the asphalt after aging is greatly increased, and the viscosity of the base slurry and the product of the embodiment 1 is not changed, so that the asphalt has large influence on the rheological property of the drilling fluid, and the product of the invention has no influence.
(3) And filtration loss: after aging, the base slurry and the product of example 1, which has high-temperature and high-pressure filtration loss FLHTHP, are greatly reduced, and the effect is better than that of asphalt.
TABLE 1 drilling fluid Performance test results
Remarking: detecting at 68 ℃; rolling at 200 ℃; the high-temperature and high-pressure filtration loss conditions are 150 ℃ and 3.5 MPa;
AV apparent viscosity; PV plastic viscosity; YP dynamic shear force; FLHTHP high temperature high pressure filtration loss; es (V) demulsification voltage.
The embodiments of the present invention have been described in detail, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.
Claims (3)
1. A preparation method of a high-temperature-resistant fluid loss additive for an oil-based drilling fluid is characterized by comprising the following steps:
adding 180-220 parts by weight of tap water into a reaction kettle, starting stirring, slowly adding 3-9 parts by weight of sodium hydroxide, heating to 90-100 ℃, slowly adding 50-60 parts by weight of lignite, performing an alkalization reaction for 0.8-1.2 h, pumping into a filter tank, filtering out impurities, pumping back into the reaction kettle, adding 1-2 parts by weight of hydrochloric acid, and adjusting the pH value to 5-6; slowly adding 8-15 parts of dioctadecyl trimethyl ammonium chloride and 15-20 parts of octadecyl dimethyl benzyl ammonium bromide, heating to 130-140 ℃, and reacting for 3.5-4.5 hours at constant temperature; after the temperature is reduced to 90-100 ℃, adding naphthenic acid amide to react for 1.6-2.4 h, completing the reaction, and then carrying out spray drying and crushing to obtain a final product; the rotating speed of the stirring is 50-60 r/min.
2. The method for preparing the high-temperature-resistant fluid loss additive for the oil-based drilling fluid according to claim 1, wherein the mass fraction of HCl in the hydrochloric acid is 30%.
3. The preparation method of the high-temperature-resistant fluid loss additive for the oil-based drilling fluid as claimed in claim 1, wherein the particle size 80-mesh passing rate of the final product is not less than 90%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911377268.6A CN110982497B (en) | 2016-11-07 | 2016-11-07 | Preparation method of high-temperature-resistant filtrate reducer for oil-based drilling fluid |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911377268.6A CN110982497B (en) | 2016-11-07 | 2016-11-07 | Preparation method of high-temperature-resistant filtrate reducer for oil-based drilling fluid |
| CN201610976365.7A CN106566494B (en) | 2016-11-07 | 2016-11-07 | High-temperature-resistant fluid loss additive for oil-based drilling fluid and preparation method thereof |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610976365.7A Division CN106566494B (en) | 2016-11-07 | 2016-11-07 | High-temperature-resistant fluid loss additive for oil-based drilling fluid and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110982497A CN110982497A (en) | 2020-04-10 |
| CN110982497B true CN110982497B (en) | 2022-08-09 |
Family
ID=58540293
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610976365.7A Active CN106566494B (en) | 2016-11-07 | 2016-11-07 | High-temperature-resistant fluid loss additive for oil-based drilling fluid and preparation method thereof |
| CN201911377268.6A Active CN110982497B (en) | 2016-11-07 | 2016-11-07 | Preparation method of high-temperature-resistant filtrate reducer for oil-based drilling fluid |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610976365.7A Active CN106566494B (en) | 2016-11-07 | 2016-11-07 | High-temperature-resistant fluid loss additive for oil-based drilling fluid and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN106566494B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104140789A (en) * | 2013-07-26 | 2014-11-12 | 中国石油化工股份有限公司 | High temperature resistant fluid loss additive for oil-based drilling fluid and preparation method thereof |
| CN104232034A (en) * | 2013-06-09 | 2014-12-24 | 中国石油化工股份有限公司 | A drilling fluid and a method of improving fluid loss reduction performance of the drilling fluid |
| CN104327808A (en) * | 2014-10-24 | 2015-02-04 | 中国石油集团渤海钻探工程有限公司 | Oil-based drilling fluid filtrate reducer and preparation method thereof |
| CN105586017A (en) * | 2014-10-22 | 2016-05-18 | 天津天诚拓源科技发展有限公司 | Filtrate reducer for oil-based drilling fluids and production method thereof |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8075966B2 (en) * | 2004-07-22 | 2011-12-13 | Graham Packaging Company, Ltd. | Delamination-resistant multilayer container, preform, article and method with oxygen barrier formulations |
| KR20090035462A (en) * | 2006-07-31 | 2009-04-09 | 레킷트 뱅키저 (유케이) 리미티드 | Improved hard surface cleaning compositions |
| FR2914565B1 (en) * | 2007-04-05 | 2009-05-22 | Inst Francais Du Petrole | PROCESS FOR ENRICHING ACIDIC GASES WITH GASEOUS EFFLUENT |
| CA2807336A1 (en) * | 2010-08-05 | 2012-02-09 | Biofilm Ip, Llc | Cyclosiloxane-substituted polysiloxane compounds, compositions containing the compounds and methods of use thereof |
| CN102304353B (en) * | 2011-07-08 | 2013-11-13 | 克拉玛依市金鑫科技有限公司 | Environmental-friendly type oil-based drilling fluid and preparation method thereof |
| CN103992776A (en) * | 2014-05-19 | 2014-08-20 | 克拉玛依市金鑫科技有限公司 | Shearing-potentiation organic soil for drilling and preparation method thereof |
-
2016
- 2016-11-07 CN CN201610976365.7A patent/CN106566494B/en active Active
- 2016-11-07 CN CN201911377268.6A patent/CN110982497B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104232034A (en) * | 2013-06-09 | 2014-12-24 | 中国石油化工股份有限公司 | A drilling fluid and a method of improving fluid loss reduction performance of the drilling fluid |
| CN104140789A (en) * | 2013-07-26 | 2014-11-12 | 中国石油化工股份有限公司 | High temperature resistant fluid loss additive for oil-based drilling fluid and preparation method thereof |
| CN105586017A (en) * | 2014-10-22 | 2016-05-18 | 天津天诚拓源科技发展有限公司 | Filtrate reducer for oil-based drilling fluids and production method thereof |
| CN104327808A (en) * | 2014-10-24 | 2015-02-04 | 中国石油集团渤海钻探工程有限公司 | Oil-based drilling fluid filtrate reducer and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110982497A (en) | 2020-04-10 |
| CN106566494B (en) | 2020-02-04 |
| CN106566494A (en) | 2017-04-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110628398B (en) | Water-based drilling fluid for shale gas well and production method thereof | |
| CN102911647B (en) | Temporary plugging agent for drilling fluid and preparation method thereof | |
| CN104059623A (en) | High-temperature-resistant salt-resistant fluid loss agent and preparation method thereof | |
| CN111040742B (en) | Shale inhibitor and preparation method thereof, drilling fluid and application thereof | |
| CN111718698B (en) | Hyperbranched polyetheramine environment-friendly shale inhibitor, preparation method thereof and water-based drilling fluid | |
| CN107488247B (en) | A kind of preparation method of polymer for drilling fluid shale control agent | |
| CN110483689B (en) | Polymer for acidification diversion, preparation method and acidification diversion agent | |
| CN111662690A (en) | High-temperature-resistant tackifier for drilling fluid and production method thereof | |
| CN113072918A (en) | High-temperature-resistant starch-based drilling fluid and preparation method thereof | |
| CN105586017A (en) | Filtrate reducer for oil-based drilling fluids and production method thereof | |
| CN105086959B (en) | A kind of high inhibition water-base drilling fluid and its preparation method and application | |
| CN104650830A (en) | High-temperature resistant high-density organic salt drilling fluid | |
| CN102757773A (en) | High-inhibition non-solid phase alkaline completion fluid | |
| CN111057526B (en) | Environment-friendly anti-sloughing drilling fluid and preparation method thereof | |
| CN113563508B (en) | High-temperature-resistant low-viscosity filtrate reducer | |
| CN110982497B (en) | Preparation method of high-temperature-resistant filtrate reducer for oil-based drilling fluid | |
| CN111793477B (en) | Water-based drilling fluid | |
| CN105086961B (en) | A kind of high-efficiency water-base drilling fluid and its synthetic method and application | |
| CN113773819B (en) | Water-based drilling fluid and application thereof | |
| CN112375552A (en) | Solid-phase-free clean low-damage well killing fluid and preparation method thereof | |
| CN102051159B (en) | Suspension salt well completion fluid | |
| CN101735780A (en) | Preparation method of high-temperature resisting and salt-resisting filtrate reducer for drilling fluid | |
| CN105086962B (en) | A kind of drilling fluid of strong inhibition capability and preparation method and application | |
| CN110760294A (en) | Anti-collapse filtrate reducer silicon-fluorine resin compound for drilling fluid | |
| CN109385258B (en) | Modified brine workover fluid and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20221102 Address after: 076361 Shi Ju Zi Xiang Wu Shi Jia Cun, Chongli District, Zhangjiakou City, Hebei Province Patentee after: Zhangjiakou Chongli Zhongrui drilling and production technology Co.,Ltd. Address before: 301600 north side of xuzhuangzi village, Jinghai Town, Jinghai District, Tianjin Patentee before: TIANJIN TIANCHENG TUOYUAN TECHNOLOGY DEVELOPMENT Co.,Ltd. |