It is very difficult to make tests in deep natural gas formation because of high temperature at the bottom of Wells, great pressure, complex well structure as well as the influence of hazards gas.
深层天然气地层测试难度大，主要是井底温度高、井底压力大、井身结构复杂，同时受有害气体影响。
At all events, shut-in of gas Wells would seriously affect the producer and the consumer, and it would mean too high a cost just for taking the average formation pressure.
总的来说，关井会严重地影响气矿和用气单位的生产，如果专门为获得平均地层压力而关井，其代价太大。
Gas reservoir in Xujiahe Section 2 in west Sichuan are low porosity, low permeability, deep, high formation pore and fracture pressure, etc.
川西须家河组2段气藏属于低渗低孔致密深层气藏，地层压力和破裂压力高。
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