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A kind of drilling fluid treatment agent and preparation method thereof

A drilling fluid treatment agent and solution technology, applied in the field of oilfield drilling fluids, can solve the problems of many types of treatment agents, complex systems, difficult maintenance of drilling fluids, etc. Effect

Active Publication Date: 2021-07-27
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] In order to solve the problems of existing drilling fluids such as complex systems, many types of treatment agents, and difficulty in on-site drilling fluid maintenance, the present invention provides a drilling fluid treatment agent and its preparation method

Method used

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  • A kind of drilling fluid treatment agent and preparation method thereof
  • A kind of drilling fluid treatment agent and preparation method thereof
  • A kind of drilling fluid treatment agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Drilling fluid treatment agent includes the following components:

[0052] Monomer 1 acrylamide 6.5 parts, monomer 2 allyl sodium sulfonate 8 parts, monomer 3N-vinylpyrrolidone 4.0 parts, monomer 4 acryloyloxyethyltrimethylammonium chloride 3.0 parts, initiator 1 even 0.08 parts of nitrogen diisobutyronitrile, 0.04 parts of initiator 2 ferrous sulfate, 2.6 parts of pH regulator sodium hydroxide, and 100 parts of water.

[0053] The multifunctional drilling fluid treatment agent of the present embodiment is prepared by the following method:

[0054] First add monomer 2 allyl sodium sulfonate and monomer 3N-vinylpyrrolidone to the water, adjust the pH value of the solution, add monomer 1 acrylamide and monomer 4 acryloyloxyethyltrimethylammonium chloride, add trigger The agent 1 and the initiator 2 were reacted at a constant temperature for 4 hours, then dried and pulverized to prepare a multifunctional drilling fluid treatment agent product. The specific steps are: add...

Embodiment 2

[0057] Drilling fluid treatment agent includes the following components:

[0058] Monomer 1 methacrylamide 24 parts, monomer 2 sodium styrene sulfonate 28 parts, monomer 3 acrylic acid 11 parts, monomer 4 acryloyloxybutyltrimethylammonium chloride 6.0 parts, initiator 1 persulfuric acid 0.31 parts of ammonium, 0.16 parts of sodium bisulfite initiator 2, 4.4 parts of potassium hydroxide as a pH regulator, and 100 parts of water.

[0059] The drilling fluid treatment agent of the present embodiment is prepared by the following method:

[0060] First add monomer 2 sodium styrene sulfonate and monomer 3 acrylic acid to the water, adjust the pH value of the solution, add monomer 1 methacrylamide and monomer 4 acryloyloxybutyltrimethylammonium chloride, add initiator After 5 hours of constant temperature reaction, drying and crushing are carried out to prepare a multifunctional drilling fluid treatment agent product. The specific steps are: add 28 parts of monomer 2 sodium styrene...

Embodiment 3

[0063] Drilling fluid treatment agent includes the following components:

[0064] Monomer 1 dodecyldiethanolamide 15 parts, monomer 2 sodium dodecyl sulfonate 21 parts, monomer 3 styrene 8 parts, monomer 4 methacryloyloxyethyl trimethyl chloride 4.5 parts of ammonium chloride, 0.2 parts of initiator 1 hydrogen peroxide, 0.1 part of initiator 2 sodium sulfite, 3.5 parts of lithium hydroxide as a pH regulator, and 100 parts of water.

[0065] The drilling fluid treatment agent of the present embodiment is prepared by the following method:

[0066]First add monomer 2 sodium dodecyl alkenyl sulfonate and monomer 3 styrene to the water, adjust the pH value of the solution and add monomer 1 dodecyldiethanolamide and monomer 4 methacryloyloxyethyl Trimethylammonium chloride is added with an initiator to react at a constant temperature for 5 hours, then dried and crushed to prepare a multifunctional drilling fluid treatment agent product. The specific steps are: add 21 parts of mono...

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Abstract

The invention discloses a drilling fluid treatment agent and a preparation method. The treatment agent is prepared from the raw materials of the following components: 100 parts by weight of water; 5-30 parts by weight of monomer 1; 5-30 parts by weight of monomer 2; 2-13 parts by weight of monomer 3; 2.5-7.5 parts by weight of monomer 4 parts by weight; 0.05-0.4 parts by weight of initiator 1; 0.025-0.2 parts by weight of initiator 2; 2.5-5.0 parts by weight of pH regulator; the drilling fluid treatment agent of the present invention has good fluid loss control, lubrication and inhibition of mud shale The effect of expansion, the temperature resistance can reach 130°C, it has the characteristics of less addition, lower fluid loss, high efficiency of lubrication and suppression, and can meet the needs of drilling in well sections with formation temperatures below 130°C.

Description

technical field [0001] The invention relates to the field of oilfield drilling fluid technology, in particular to a drilling fluid treatment agent and a preparation method. Background technique [0002] Water-based drilling fluid is currently the most widely used drilling fluid system. Since the initial use of clear water and clear water / clay system, with the emergence of new treatment agents, such as brine drilling fluid and positive gel drilling fluid have been formed. , polymer drilling fluid, polysulfonate drilling fluid and other series of water-based drilling fluid systems. In order to ensure downhole safety and meet the needs of drilling, there are often many types of treatment agents actually added to the above-mentioned drilling fluid system, with complex molecular structures and types. A system usually contains more than a dozen or even dozens of treatment agents. [0003] In order to overcome the above-mentioned problems of drilling fluid treatment agents, since ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F228/02C08F220/56C08F226/10C08F220/34C08F212/14C08F220/06C08F212/08C09K8/035
CPCC08F212/14C08F228/02C09K8/035C09K2208/12C09K2208/34C08F220/56C08F226/10C08F220/34C08F220/06C08F212/08
Inventor 董晓强金军斌刘贵传张国王琳李雄
Owner CHINA PETROLEUM & CHEM CORP
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