古生界非构造圈闭是大型油气田的主要圈闭类型；
Paleozoic non-structural trap, which is the main trap type of large oil and gas fields;
构造圈闭内沙四段产状平缓，储集层累计厚度大，含气丰度高。
The reservoir is thick with gentle occurrence and high gas abundance.
更常见到的水合物是气体分子被圈闭在一个晶体构造内的化合物。
More generally, hydrates are compounds in which gas molecules are trapped within a crystal structure.
世界上大约有60%的含油气圈闭与盐构造有关。
About 60% petroliferous traps are associated with the salt structure in the world.
圈闭类型主要发育构造-岩性复合型隐蔽圈闭。
The main trap is subtle composite trap of structure and lithology.
圈闭类型主要发育构造-岩性复合型隐蔽圈闭。
The main trap is subtle composite trap of structure and lithology.
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