涪陵页岩气田井网加密技术探讨

涪陵页岩气田是全球除北美外最大的页岩气田,至2013年投入商业开发以来,至今已钻探开发井420余口,2015年完成50×108m3产能建设,2017年建成百亿立方米大气田。随着生产时间的延长,部分井产量、压力递减快。低压气井逐年增加,气田持续稳产压力大。美国页岩气开发经验表明:加密钻井可以增加波及面积、提高储量动用程度、提高气井的采收率,井网加密已经成为开发页岩气藏的主要技术之一。通过对涪陵页岩气田目前开发状况进行分析,认为在涪陵页岩气田开展气井加密调整技术具有一定的可行性。

Discussion on encryption technology of well pattern in Fuling shale gasfield

The Fuling shale gasfield is the largest shale gasfield in the world except North America. Since it was put into commercial development in 2013, it has drilled more than420 development wells. In 2015, it completed the construction of 5 billion square meters of capacity and completed 10 billion square meters gasfield in 2017. With the extension of production time, the output and pressure of some wells are decreasing rapidly. The low-pressure gas wells have increased year by year, and the gasfields continue to have stable production pressure.The experience of shale gas development in the United States shows that,encrypted drilling can increase the area of the area, increase the utilization of reserves, and improve the recovery of gas wells.Well network encryption has become one of the main technologies for developing shale gas reservoirs. Based on the analysis of the current development status of the Fuling shale gasfield, it is considered that the gas well encryption adjustment technology in the Fuling shale gasfield has certain feasibility.