embedded image wherein each of R1, R2, R3, R4 and R5 is independently selected from H, C1-C4 alkyl and C1-C4 alkoxy, R6 is alkylene of C1-C6. The drilling fluid containing the structured nanometer film reservoir protecting agent of the present invention exhibits favorable rheology property, temperature-tolerant property, anti-collapse property and reservoir protection property when used for drilling in low-permeability reservoirs. "/> Nanometer film structured reservoir protecting agent, drilling fluid containing the same and use thereof in low-permeability reservoirs
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Nanometer film structured reservoir protecting agent, drilling fluid containing the same and use thereof in low-permeability reservoirs

机译:纳米膜结构储层保护剂,包含该保护剂的钻井液及其在低渗储层中的用途

摘要

The present invention relates to the petroleum drilling field and discloses a nanometer film structured reservoir protecting agent, a drilling fluid containing the same and use thereof in low-permeability reservoirs. The structured nanometer film reservoir protecting agent comprises montmorillonite laminas, structural units represented by formula (1) and structural units represented by formula (2),; embedded image wherein each of R1, R2, R3, R4 and R5 is independently selected from H, C1-C4 alkyl and C1-C4 alkoxy, R6 is alkylene of C1-C6. The drilling fluid containing the structured nanometer film reservoir protecting agent of the present invention exhibits favorable rheology property, temperature-tolerant property, anti-collapse property and reservoir protection property when used for drilling in low-permeability reservoirs.
机译:本发明涉及石油钻探领域,公开了一种纳米膜结构储层保护剂,包含该保护剂的钻井液及其在低渗储层中的用途。所述结构化的纳米膜储层保护剂包括蒙脱土薄片,式(1)表示的结构单元和式(2)表示的结构单元。 “嵌入式图像” 其中,每个R 1 ,R 2 ,R 3 ,R < Sub> 4 和R 5 分别选自H,C 1 -C 4 烷基和C 1 < / Sub> -C 4 烷氧基,R 6 是C 1 -C 6 的亚烷基。含有本发明的结构化纳米膜储层保护剂的钻井液在低渗透储层中钻井时,具有良好的流变性,耐温性,抗塌陷性和储层保护性。

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