研究了大港油田港东地区沙河街地层三种硬脆性泥页岩的水化坍塌机理。
This paper studies the hydration sloughing mechanism of three kinds of hard and brittle shales of Shahejie formation in Gangdong oilfield.
下部地层以石灰岩、泥页岩、砂岩为主，地层疏松，易漏失，属低压高产地层。
The lower formation is consisted of loose limestone, shale and sandstone, with low formation pressure coefficient.
下部地层以石灰岩、泥页岩、砂岩为主，地层疏松，易漏失，属低压高产地层。
The lower formation is consisted of loose limestone, shale and sandstone, with low formation pressure coefficient.
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