Application of "Well Factory" Drilling Technology in the Fuling Shale Gas Field
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摘要: 涪陵页岩气田地处山地,环境复杂,井场面积受限,钻前与钻井施工组织难度大、成本高.为此,借鉴国外页岩气工厂化流水作业理念,针对涪陵山地特点及页岩气地质与开发特征,开展了涪陵山地"井工厂"井网部署和井眼轨道设计、井间快速移动钻机改造、工厂化钻井作业流程设计、批量化作业方案设计等方面的研究,形成了适应涪陵山地特点的页岩气"井工厂"钻井技术.在JY30和JY28平台的应用表明,涪陵地区页岩山地"井工厂"钻井技术具有提高钻机作业效率、缩短建井周期、提高资源综合利用率和降低废液排放量等技术优势,并保障了涪陵页岩气井4井式平台当年完成建平台、开钻、完钻、压裂试气和投产目标的实现,对国内类似页岩气区块的开发具有借鉴意义.Abstract: 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 well site logistical limitations.Based on the concepts of the "well factory" 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 factory" well patterns, well trajectory design, modification of fast-moving rigs, design of the well factory drilling process, and the design of batch operation schemewere carried out. Byresearching "well factory" 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 well construction cycle, improve the comprehensive utilization rate of resources, and reduce fluid waste discharge in Fuling Area.In addition, platform construction, drilling, completion, fracturing, well 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.
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Keywords:
- shale gas /
- well factory /
- drilling /
- mountainous terrain /
- Fuling Area
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