铁山坡高含硫气藏安全快速钻井技术优化与应用  

Optimization and Application of Safe and Fast Drilling Technology in Tieshanpo Gas Reservoir with High Sulfur

作　　者：贺立勤 王军[1] 简旭 王雅萱 李晓刚 万夫磊 王华平 唐一元 邓开建 HE Liqin;WANG Jun;JIAN Xu;WANG Yaxuan;LI Xiaogang;WAN Fulei;WANG Huaping;TANG Yiyuan;DENG Kaijian(Chuandong Drilling Company,CNPC Chuanqing Drilling Engineering Co.,Ltd.,Chongqing 401147,China;CNPC Engineering Technology R&D Company Limited,Beijing 102206,China;Drilling&Production Engineering Technology Research Institute,CNPC Chuanqing Drilling Engineering Co.,Ltd.,Guanghan,Sichuan 618300,China)

机构地区：[1]中国石油川庆钻探工程有限公司川东钻探公司 [2]中国石油集团工程技术研究院有限公司 [3]中国石油川庆钻探工程有限公司钻采工程技术研究院

出　　处：《钻采工艺》2024年第3期49-57,共9页Drilling & Production Technology

基　　金：中国石油集团公司川庆钻探工程有限公司项目“川东北高含硫气藏钻井安全风险防控技术研究”(编号:CQ2021B-46-Z1-3)。

摘　　要：针对铁山坡气藏硫化氢含量高(最高达222.30 g/m^(3))、嘉五以上地层倾角大(最大倾角25°)、须家河组研磨性强、嘉陵江组高压盐水侵、飞仙关组地层压力系数低等难题,开展了套管柱、井口装置、钻具抗硫材质优选,优化了铁山坡区块的井身结构,优选了高陡构造防斜提速工具,形成了铁山坡高含硫气藏安全快速钻井技术。现场应用效果表明,优选的抗硫钻具、套管柱、井口装置满足了高含硫气藏安全高效开发的要求;四开井身结构有效解决了上部地层井漏、垮塌、盐水侵的问题,降低了飞仙关高含硫层段的井控风险;优选了垂钻工具、钻头和旋导工具,铁山坡气田平均机械钻速由1.85 m/h提速到3.61 m/h,铁山坡6口井平均钻井周期缩短了16.11%。该研究成果为后续川东北高含硫气藏的安全快速钻井提供了技术支撑。The formation dip angle above the Jiawu formation is large in Tieshanpo high sour gas reservoir.The leakage and collapse occur simultaneously in Ziliujing and Xujiahe formation.The Xujiahe Formation has strong abrasiveness.The drilling fluid is invaded by high-pressure saline water in the Jiasi formation.The leakage,overflow and collapse occur simultaneously in Feixianguan formation.In response to the above challenges,this paper has carried out a research on drilling technology.Sulfur resistant materials suitable for casing strings,wellhead equipment,and drilling tools were preferred.The well structure design of the Tieshanpo block has been optimized,and tools for preventing wellbore deviation and improving drilling speed are preferred.Based on the above research results,the safe and rapid drilling technology for high sulfur gas reservoirs in Tieshanpo has been finished.The field application results show that the optimized sulfur resistant drilling tools,casing strings,and wellhead devices meet the requirements of safe and efficient development of high sulfur gas reservoirs.The problems of well leakage,collapse,and salt water intrusion in the upper formation have been solved by designing the structure of the four layer wellbore.At the same time,the well control risk of the high sulfur formation in Feixianguan has been reduced.The selected vertical drilling tools,drill bits,and rotary guide tools have significantly increased drilling speed of Tieshanpo gas reservoir.6 wells in Tieshanpo have reduced drilling cycle by 150 days in total.This research achievement provides technical support for the safe and rapid drilling of high sulfur gas reservoirs in Northeast Sichuan.

关 键 词：铁山坡 高含硫化氢气藏 抗硫材质 防斜提速 溢漏同存 

分 类 号：TE242[石油与天然气工程—油气井工程]