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A kind of drilling fluid treatment agent and preparation method thereof

A drilling fluid treatment agent and solution technology, which is applied in chemical instruments and methods, drilling compositions and other directions, can solve the problems of difficult maintenance of drilling fluid, complex systems, and various types of treatment agents, and achieves good filtration reduction, Good compatibility and low dosage

Active Publication Date: 2022-04-08
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] In order to solve the problems of existing drilling fluids such as complex systems, many types of treatment agents, and large differences in the difficulty of on-site drilling fluid maintenance, the present invention proposes 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

[0049] The multifunctional drilling fluid treatment agent of the present embodiment is prepared by the following method:

[0050] First add monomer 1 2-acrylamido-2-methylpropanesulfonic acid and monomer 2 acrylic acid to water, adjust the pH value of the solution and then add monomer 3N, N-methylenebisacrylamide and monomer 4 diene Propyl dimethyl ammonium chloride, adding initiator 1, hydrogen peroxide and initiator 2, sodium bisulfite, reacted at a constant temperature for 4 hours, then sheared, dried, and pulverized to prepare a multifunctional drilling fluid treatment agent product. The specific steps are: add 7 parts of monomer 1 2-acrylamido-2-methylpropanesulfonic acid and 3 parts of monomer 2 acrylic acid to 100 parts of water at room temperature, stir until completely dissolved and then use pH regulator sodium hydroxide 2.5 Adjust the pH of the solution to 9.0, add 4 parts of monomer 3N,N-methylenebisacrylamide and 3 parts of monomer 4 diallyldimethylammonium chlorid...

Embodiment 2

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

[0054] First add monomer 1 sodium methacrylate and monomer 2 tert-butyl acrylate to the water, adjust the pH value of the solution and then add monomer 3N-methylolacrylamide and monomer 4 trimethylglycidyl chloride ammonium, add initiator 1 ammonium persulfate and initiator 2 tetraethyleneimine to react at constant temperature for 4 hours, then shear, dry and pulverize to prepare a multifunctional drilling fluid treatment agent product. The specific steps are: add 21 parts of monomer 1 sodium methacrylate sulfonate and 10.5 parts of monomer 2 tert-butyl acrylate to 100 parts of water at room temperature, stir until completely dissolved, and adjust the pH of the solution with 4 parts of pH regulator calcium hydroxide. Adjust to 8.0, add 32 parts of monomer 3N-methylolacrylamide and 5.5 parts of monomer 4 trimethylglycidyl ammonium chloride to the solution, ...

Embodiment 3

[0057] The multifunctional drilling fluid treatment agent of the present embodiment is prepared by the following method:

[0058] First add monomer 1 acrylamidophenylethanesulfonic acid and monomer 2 methacrylate to the water, adjust the pH value of the solution and add monomer 3N-butoxymethacrylamide and monomer 4 trimethylallyl base ammonium chloride, add initiator 1 sodium perchlorate and initiator 2 sodium thiosulfate to react at constant temperature for 4 hours, then shear, dry and pulverize to prepare a multifunctional drilling fluid treatment agent product. The specific steps are: add 14 parts of monomer 1 acrylamidophenylethanesulfonic acid and 6 parts of monomer 2 methacrylate to 100 parts of water at room temperature, stir until completely dissolved, and then use 2.5 parts of pH regulator magnesium hydroxide to dissolve Adjust the pH of the solution to 7.0, add 21 parts of monomer 3N-butoxymethacrylamide and 4.2 parts of monomer 4 trimethylallyl ammonium chloride to ...

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Abstract

The invention discloses a drilling fluid treatment agent and a preparation method. The drilling fluid treatment agent is prepared from raw materials comprising the following components: 100 parts by weight of water; 5-25 parts by weight of monomer 1; 2-12 parts by weight of monomer 2; 3-35 parts by weight of monomer 3; 2.0-7.0 parts by weight of monomer 4; 0.05-0.35 parts by weight of initiator 1; 0.025-0.15 parts by weight of initiator 2; 2.0-5.0 parts by weight of pH regulator. The drilling fluid treatment agent of the present invention has a good effect of reducing fluid loss, lubricating and coating shale expansion, and the temperature resistance can reach 130°C. It can meet the needs of well section drilling with formation temperature within 130°C.

Description

technical field [0001] The invention relates to the technical field of oilfield drilling, and more particularly relates to a drilling fluid treatment agent and a preparation method thereof. Background technique [0002] In order to ensure downhole safety and meet the needs of drilling, there are often many types of treatment agents actually added to the water-based drilling fluid system, with complex molecular structures and types. A system usually contains more than a dozen or even dozens of treatment agents. In order to overcome the above-mentioned problems of drilling fluid treatment agents, since the 1990s, a small number of multi-functional drilling fluid treatment agent products with various application effects have been formed by expanding other functions, such as fluid loss control. The agent has the functions of inhibition and flow pattern control. The gradual simplification of the system is one of the development trends of drilling fluid. Researches on multifunct...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/035C08F220/58C08F220/06C08F220/10C08F220/18C08F222/38C08F226/02C08F228/02
CPCC09K8/035C08F220/58C08F228/02
Inventor 董晓强张国李雄刘贵传金军斌王琳
Owner CHINA PETROLEUM & CHEM CORP
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