CN104327809A - Fluid loss agent for drilling fluid and preparation method of fluid loss agent - Google Patents
Fluid loss agent for drilling fluid and preparation method of fluid loss agent Download PDFInfo
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- CN104327809A CN104327809A CN201410607550.XA CN201410607550A CN104327809A CN 104327809 A CN104327809 A CN 104327809A CN 201410607550 A CN201410607550 A CN 201410607550A CN 104327809 A CN104327809 A CN 104327809A
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- fluid loss
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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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Abstract
The invention relates to a fluid loss agent for drilling fluid and a preparation method of the fluid loss agent. The fluid loss agent is prepared from the following components in weight percentage: 50-65% of starch, 8-20 parts of ethyl alcohol, 5-8 parts of alkali piece and 20-25 parts of sodium chloroacetate. The preparation method of the fluid loss agent for drilling fluid comprises the following steps: (1) adding starch, an organic solvent and the alkali piece into a kneading machine and mixing; (2) carrying out stirring reaction for 20min and controlling the reaction temperature to be at 35-45 DEG C; (3) adding an etherifying agent for carboxymethylation, performing stirring reaction for 40min and controlling the temperature to 65-70 DEG C; (4) cooling to room temperature, recycling ethyl alcohol until no obvious alcohol flavor exists; and (5) carrying out ageing for 4-6h to obtain the fluid loss agent for drilling fluid. The fluid loss agent for drilling fluid is a natural polymer fluid loss agent, has strong water solubility and good compatibility, and is suitable for fresh water mud and salty mud. The preparation method of the fluid loss agent for drilling fluid simplifies the technological process, so as to facilitate reduction of the production cost, increase of the economic benefit and avoiding of discharging of waste liquid.
Description
Technical field
The invention belongs to oil field chemical production technical field, relate to a kind of fluid loss additive for boring fluid and preparation method thereof.
Background technology
Along with the scarcity of petroleum resources and the needs for meeting people's productive life, the oil and gas development of deep-well and ultra deep well is become inevitable.But due to the restriction of production technique, make the hydrocarbon resources of deep formation fail to serve the mankind preferably.Be embodied in: deep-well, ultra deep well downhole temperature and pressure are high, stratal configuration more complicated often can run into high-pressure oil-gas layer and brine layer in drilling process.In this case, people cross high technical barrier to drill in fluid unstable properties, filter loss and are difficult to solve, and down-hole often occurs in drilling operation course and caves in and the down-hole accident such as bit freezing, bring great inconvenience to drilling well work.Effect of Anti high temperature mud has particularly become an important topic being badly in need of solving to the development of oil field chemical fluid loss agent.
The high temperature deep well that probing difficulty is large, Holes of Complicated Wells, horizontal well become inexorable trend, have higher requirement to fluid loss agent.The deficiency that fluid loss additive for boring fluid of the prior art exists is: poorly water-soluble, can not carry out good compatibility with drilling fluid, result of use is not ideal enough.Become the desirable fluid loss agent of saturated salt-water drilling fluid because of its good salt resistance by the drilling fluid salt resistant filter loss reduction agent of starch conversion.Salt resistant filter loss reduction agent routine reactor carries out alkalinisation treatment and carboxymethylation reaction, then carries out being separated and washing with whizzer, then uses drier, and the solvent rectifying tower after recovery is purified.Production process technology is complicated, facility investment and production cost high, have a large amount of discharging of waste liquid, be unfavorable for environment protection.
Summary of the invention
The object of this invention is to provide a kind of fluid loss additive for boring fluid, to reduce the filter loss of drilling fluid, improve the stability of drilling fluid.Another object of the present invention is to provide a kind of preparation method of fluid loss additive for boring fluid, optimizes the preparation process of fluid loss agent.
Technical scheme of the present invention is: fluid loss additive for boring fluid, and its component is by weight percentage: starch 50 ~ 65, organic solvent 8 ~ 20, alkali sheet 5 ~ 8 and etherifying agent 20 ~ 25.Starch, organic solvent, alkali sheet and etherifying agent are polymerized in conversion unit.
Alkali sheet is sodium hydroxide or potassium hydroxide, and organic solvent is ethanol, and etherifying agent is sodium chloroacetate, starch is W-Gum.
The preparation method of fluid loss additive for boring fluid of the present invention, preparation process is as follows:
(1) in conversion unit, add starch, organic solvent and alkali sheet mix;
(2) stirring reaction 20 minutes, controls temperature of reaction 35 ~ 45 DEG C;
(3) add etherifying agent and carry out carboxymethylation, stirring reaction 40 minutes, control temperature 65 ~ 75 DEG C;
(4) material in conversion unit is cooled to room temperature, starts vacuum pump and reclaim ethanol extremely without obvious wine temperature vital essence taste;
(5) open conversion unit and release material, aging 4 ~ 6 hours placed separately, obtain fluid loss additive for boring fluid product;
(6) sampling is tested, up-to-standard rear pack.
Conversion unit is kneader, and kneader is provided with water cooling chuck, and cooling jacket Huishui cooling pump connects.
Inspection filtrate reducer for drilling fluid adopts company standard " drilling fluid salt resistant filter loss reduction agent GD-K " (Q/HGD-05-2014) or GB " environment-friendly modified starch YC-1 " (GB/T5005-2010) to test.The recommendation dosage of fluid loss additive for boring fluid of the present invention in fresh-water drilling fluid is 0.2% ~ 0.5%, and the recommendation dosage in salt-water drilling fluid is 1.0% ~ 2.0%.
The fluid loss additive for boring fluid that the present invention is main component by treated starch is natural polymer fluid loss agent, water-soluble very strong, compatibility use can be carried out from different drilling fluids, be suitable as the fluid loss agent in water mud, 4% salty mud and saturated saltwater mud, there is good compatibleness.The preparation process of drill-in fluid fluid loss agent adopts kneader to carry out alkalinisation treatment and carboxymethylation reaction, simplifies production process, decreases facility investment, is conducive to reducing production cost, increases Business Economic Benefit.Reaction process only adds a small amount of organic solvent, and reaction system remains pulverulence, reduces organic solvent consumption, has both saved production cost, turn avoid discharging of waste liquid.Save separation and washing process, there is no discharging of waste liquid, reduce and avoid environmental pollution.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of fluid loss additive for boring fluid preparation process of the present invention;
Fig. 2 is the schematic flow sheet that prior art prepares fluid loss additive for boring fluid preparation process.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is described in detail.Scope is not limited to embodiment, and those skilled in the art make any change and also belong to the scope of protection of the invention in the scope that claim limits.
The preparation process of fluid loss additive for boring fluid is:
(1) in kneader, add W-Gum and sodium hydroxide alkali sheet stirs, start alcohol volume pump, to spray mode, alcohol is added kneader;
(2) stirring reaction 20 minutes, controls temperature of reaction 35 ~ 45 DEG C;
(3) add sodium chloroacetate and carry out carboxymethylation, stirring reaction 40 minutes, control temperature 65 ~ 75 DEG C;
(4) start water circulating pump, Matter Transfer in conversion unit is cooled to room temperature; Start vacuum pump and reclaim ethanol extremely without obvious wine temperature vital essence taste;
(5) open kneader and release material, aging 4 ~ 6 hours placed separately, obtain fluid loss additive for boring fluid product;
(6) sampling is tested, up-to-standard rear pack.
Embodiment 1
In the kneader of 1000L, add 400kg starch, 60kg ethanol, 40kg sheet alkali, control temperature 38 DEG C, react 20 minutes; Then add 150kg sodium chloroacetate, control temperature 68 DEG C, react 40 minutes, obtain product 1.
Embodiment 2:
In the kneader of 1000L, add 400kg starch, 90kg ethanol, 40kg sheet alkali, control temperature 40 DEG C, react 20 minutes; Then add 150kg sodium chloroacetate, control temperature 70 DEG C, react 40 minutes, obtain product 2.
Embodiment 3:
400kg starch is added, 1 in the kneader of 1000L
20kgethanol, 40kg sheet alkali, control temperature 42 DEG C, reacts 20 minutes; Then add 150kg sodium chloroacetate, control temperature 73 DEG C, react 40 minutes, obtain product 3.
The sampling of the product 1 above-mentioned test obtained, product 2 and product 3 is tested, and fluid loss additive for boring fluid quality index and three set product quality analysis results are in table 1.Table 1 result shows, the said products meets completely " drilling fluid salt resistant filter loss reduction agent GD-K " (Q/HGD-05-2014) and the specification of quality of " environment-friendly modified starch YC-1 " (GB/T5005-2010).Three-in-one paper plastic combined package bag is adopted to pack, inner lining plastic bag.Every bag of clean quality 25kg ± 0.2kg.Be stored in cool place, drying, ventilation for subsequent use.
Claims (4)
1. a fluid loss additive for boring fluid, is characterized in that: described fluid loss agent by weight percentage its component is: starch 50 ~ 65, organic solvent 8 ~ 20, alkali sheet 5 ~ 8 and etherifying agent 20 ~ 25; Described starch, organic solvent, alkali sheet and etherifying agent are polymerized in conversion unit.
2. fluid loss additive for boring fluid according to claim 1, is characterized in that: described alkali sheet is sodium hydroxide or potassium hydroxide, and described organic solvent is ethanol, and described etherifying agent is sodium chloroacetate.
3. a preparation method for fluid loss additive for boring fluid according to claim 1, is characterized in that: described preparation process is as follows:
(1) in conversion unit, add starch, organic solvent and alkali sheet mix;
(2) stirring reaction 20 minutes, controls temperature of reaction 35 ~ 45 DEG C;
(3) add etherifying agent and carry out carboxymethylation, stirring reaction 40 minutes, control temperature 65 ~ 70 DEG C;
(4) material in conversion unit is cooled to room temperature, starts vacuum pump and reclaim ethanol extremely without obvious wine temperature vital essence taste;
(5) open conversion unit and release material, aging 4 ~ 6 hours placed separately, obtain fluid loss additive for boring fluid product;
(6) sampling is tested, up-to-standard rear pack.
4. the preparation method of fluid loss additive for boring fluid according to claim 1, is characterized in that: described conversion unit is kneader.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410607550.XA CN104327809A (en) | 2014-11-03 | 2014-11-03 | Fluid loss agent for drilling fluid and preparation method of fluid loss agent |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410607550.XA CN104327809A (en) | 2014-11-03 | 2014-11-03 | Fluid loss agent for drilling fluid and preparation method of fluid loss agent |
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| CN104327809A true CN104327809A (en) | 2015-02-04 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104877649A (en) * | 2015-05-11 | 2015-09-02 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | Modified starch fluid loss additive for drilling fluids and preparation method thereof |
| CN105461818A (en) * | 2016-01-05 | 2016-04-06 | 中国石油大学(华东) | Semidry method preparation method of 2-hydroxy-3-sulfo propyl starch ether |
| CN105987988A (en) * | 2015-03-02 | 2016-10-05 | 中国石油化工股份有限公司 | Disperse system for evaluating drilling fluid, evaluating method and application |
| CN108774506A (en) * | 2018-04-17 | 2018-11-09 | 中原工学院 | A kind of etherification modified starch fluid loss additive of high temperature resisting type and preparation method thereof |
| CN110372804A (en) * | 2019-07-13 | 2019-10-25 | 湖北江汉利达石油物资装备有限公司 | Anti-salt temperature-resistant starch drilling well fluid loss additive and preparation method thereof |
| CN111500268A (en) * | 2014-06-10 | 2020-08-07 | 奥伦烃私人有限公司 | Water-based wellbore servicing fluid containing high temperature fluid loss control additives |
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| CN101037591A (en) * | 2007-04-24 | 2007-09-19 | 严金龙 | Preparation method for anti-temperature salt-tolerant fluid loss reducer |
| US20090294179A1 (en) * | 2005-03-07 | 2009-12-03 | David Ballard | Method of controlling fluid loss and materials useful therein |
| CN101851491A (en) * | 2009-10-20 | 2010-10-06 | 新疆德蓝股份有限公司 | Method for preparing fluid loss additive for drilling fluid |
| CN103709258A (en) * | 2013-12-23 | 2014-04-09 | 河南海洋化工有限公司 | Sodium carboxymethyl starch for drilling fluid and preparation method thereof |
| CN103788938A (en) * | 2012-11-02 | 2014-05-14 | 中国石油化工股份有限公司 | Retarded acid for low-permeability sandstone reservoir acidification |
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| US20090294179A1 (en) * | 2005-03-07 | 2009-12-03 | David Ballard | Method of controlling fluid loss and materials useful therein |
| CN101037591A (en) * | 2007-04-24 | 2007-09-19 | 严金龙 | Preparation method for anti-temperature salt-tolerant fluid loss reducer |
| CN101851491A (en) * | 2009-10-20 | 2010-10-06 | 新疆德蓝股份有限公司 | Method for preparing fluid loss additive for drilling fluid |
| CN103788938A (en) * | 2012-11-02 | 2014-05-14 | 中国石油化工股份有限公司 | Retarded acid for low-permeability sandstone reservoir acidification |
| CN103709258A (en) * | 2013-12-23 | 2014-04-09 | 河南海洋化工有限公司 | Sodium carboxymethyl starch for drilling fluid and preparation method thereof |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111500268A (en) * | 2014-06-10 | 2020-08-07 | 奥伦烃私人有限公司 | Water-based wellbore servicing fluid containing high temperature fluid loss control additives |
| CN105987988A (en) * | 2015-03-02 | 2016-10-05 | 中国石油化工股份有限公司 | Disperse system for evaluating drilling fluid, evaluating method and application |
| CN104877649A (en) * | 2015-05-11 | 2015-09-02 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | Modified starch fluid loss additive for drilling fluids and preparation method thereof |
| CN105461818A (en) * | 2016-01-05 | 2016-04-06 | 中国石油大学(华东) | Semidry method preparation method of 2-hydroxy-3-sulfo propyl starch ether |
| CN105461818B (en) * | 2016-01-05 | 2018-04-13 | 中国石油大学(华东) | The semidry method preparation method of 2 hydroxyl, 3 sulfonic group propyl group starch ether |
| CN108774506A (en) * | 2018-04-17 | 2018-11-09 | 中原工学院 | A kind of etherification modified starch fluid loss additive of high temperature resisting type and preparation method thereof |
| CN108774506B (en) * | 2018-04-17 | 2021-09-21 | 中原工学院 | High-temperature-resistant etherified modified starch filtrate reducer and preparation method thereof |
| CN110372804A (en) * | 2019-07-13 | 2019-10-25 | 湖北江汉利达石油物资装备有限公司 | Anti-salt temperature-resistant starch drilling well fluid loss additive and preparation method thereof |
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Application publication date: 20150204 |
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