The secondary dolomite and paleokarst of the LowerPermianSeries in Sichuan basin is one of the important atectonic reserviors in the basin.
四川盆地下二叠统中次生白云岩及古岩溶是下二叠统主要的非构造圈闭储层之一。
2
South Sichuan gas area with a lot of gas field water takes LowerPermianSeries gas reservoir as main body. Gas field water scaling is a difficult problem in production.
川南地区是以下二叠统气藏为主的气区，产大量的气田水，气田水结垢是生产中的一大难题。
3
The Lower Carboniferous Ceshui and Upper Permian Longtan coal series are most important in Southeast China, and can both generate and bear gas greatly in the Lianyuan coal basin, Central Hunan, China.