The formation damage during drilling are recognized as 2 types: mud solid particles plug and mud filtrate invasion.
钻井过程中的油层污染可分为泥浆固相颗粒侵入和滤液侵入2种类型。
By this process enormous amounts of mud and rock are moved from the land to the sea.each year the Mississippi Rivercarries 730 million of solid matter into the Gulf of Mexico.
通过这一过程，巨量的泥沙和石块从陆地移入海洋。每年，密西西比河要把7.3亿吨的固体物质送入墨西哥湾。
A technique of temporary screen plugging for fractured reservoirs strata is proposed, by which the solid particles in the mud are used to plug up the fractures.
屏蔽式暂堵技术是利用泥浆中固相颗粒在地层裂缝处形成堵塞而达到暂堵的技术。
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