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High temperature resistance intercalation adsorption inhibitor and preparation method thereof

An inhibitor, high temperature resistant technology

Active Publication Date: 2018-11-06
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It overcomes the shortcomings of the existing inhibitors, such as poor inhibition of clay surface hydration, high price, severe foaming, easy decomposition at high temperature, and great influence on the rheology of drilling fluid

Method used

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  • High temperature resistance intercalation adsorption inhibitor and preparation method thereof
  • High temperature resistance intercalation adsorption inhibitor and preparation method thereof
  • High temperature resistance intercalation adsorption inhibitor and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0014] Add tetrahydrofuran as a reaction solvent to the flask under the protection of nitrogen, and simultaneously add 0.4 mole fraction of 1,3 propane sultone, 1 mole fraction of tetraethylenepentamine and 0.01 mole fraction of phenothiazine , Stir the reaction at room temperature for 4h to obtain the inhibitor.

Embodiment 2

[0016] Under the protection of nitrogen, tetrahydrofuran was added to the flask as a reaction solvent, and at the same time, 0.6 mole fraction of 1,3 propane sultone, 1 mole fraction of tetraethylenepentamine and 0.02 mole fraction of phenothiazine were added , Stir the reaction at room temperature for 5h to obtain the inhibitor.

Embodiment 3

[0018] Add tetrahydrofuran as a reaction solvent to the flask under the protection of nitrogen, and simultaneously add 0.8 mole fraction of 1,3 propane sultone, 1 mole fraction of tetraethylenepentamine and 0.03 mole fraction of phenothiazine , Stir the reaction at room temperature for 6h to obtain the inhibitor.

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Abstract

The invention relates to the technical field of drilling fluid additives in oil field well drilling and especially relates to a high temperature resistance intercalation adsorption inhibitor and a preparation method thereof. The inhibitor is prepared from the ingredients in parts by mole: 0.4 to 0.8 part of 1,3-propanesultone, 1 part of polyethylene polyamine and 0.01 to 0.03 part of phenothiazine. The high temperature resistance intercalation adsorption inhibitor disclosed by the invention can completely inhibit clay surface hydration, can dehydrate surface hydrated clay and has the advantages of superstrong inhibition characteristic, high temperature stability, high temperature resistance, salt resistance, small added amount, low cost and easiness in biodegradation at the same time.

Description

Technical field: [0001] The invention relates to the technical field of drilling fluid treatment agents in oilfield drilling, in particular to an anti-high temperature intercalation adsorption inhibitor and a preparation method thereof. Background technique: [0002] During the drilling process, the hydration expansion and dispersion of clay minerals in shale formations will cause difficulties in controlling the rheology of drilling fluids, bit bagging, wellbore instability, and sticking and sticking, and many other problems. Oil-based drilling fluid has super-inhibiting properties, which can completely avoid the hydration and expansion of formation clay minerals, keep the wellbore stable and reduce the occurrence of complications. Water-based drilling fluids that are safe, environmentally friendly, relatively cheap, and have performance comparable to oil-based drilling fluids have become a trend and necessity. Accidents happen frequently. [0003] The hydration of clay mi...

Claims

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Application Information

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IPC IPC(8): C09K8/035C09K8/22
CPCC09K8/035C09K8/22
Inventor 王晓军蒋官澄关键高玮孙云超李俊杞蒋立洲鞠红波孔栋梁徐路韩龙高清春赵文龙崔晓余婧马俊闻丽孙少亮王西贵王丽君杨超程东刘宏宇张颖平
Owner BC P INC CHINA NAT PETROLEUM CORP
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