涪陵地区页岩气山地“井工厂”钻井技术
摘要
Sinopec’s Fuling shale gas field is located in a complex mountainous environment and the pre-drilling and drilling operations are difficult and costly due to site logistical limitations.Based on the concepts of the well process used in shale gas development abroad, and considering the terrain and the geologic and development characteristics of shale gas reservoirs in the Fuling Area, investigations into the deployment of well patterns, trajectory design, modification of fast-moving rigs, design of the factory drilling process, and the design of batch operation schemewere carried out. Byresearching well technology suitable for shale gas drilling in Fuling Area was formed. Its application in Pad JY30 and JY28 showed that this technology could help increase rig operation efficiency, shorten the construction cycle, improve the comprehensive utilization rate of resources, and reduce fluid waste discharge in Fuling Area.In addition, platform construction, drilling, completion, fracturing, testing and production initiation were completed in the same calendar year for a typical four-well pad in the Fuling Area. All these results can provide reference for the development of other similar shale gas fields in China.