Research shows that effectiveness of reservoir with cavern relates to porosity and the type of cavern, and reservoir with big cavern is more effective than with little one.

研究认为，孔洞型储层有效性与孔隙度及孔洞类型有关，且大孔孔洞型储层较小孔孔洞型储层有效。

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The karst is mainly in the form of caverns, and the groundwater is mostly of fissure cavern type.

岩溶形态以溶蚀裂隙洞穴为主，地下水类型多为裂隙溶洞型。

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The formation of karst? Cavern type carbonate oil reservoirs in lower Ordovician of 4 area in Tahe oilfield is related to weathering? Denudation of fossil weathering crust.

塔河油田4区下奥陶统碳酸盐岩岩溶缝洞型油藏的形成与古风化壳的风化剥蚀有关。

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Louisiana officials have reached out to Texas Brine Company, urging it to provide affected residents with some type of assistance while it investigates whether a breach in its cavern might have caused the sinkhole 100 yards away.

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