川东北通南巴复杂构造带气体钻井防漏提速技术
Gas Drilling for Lost Circulation Prevention and ROP Optimization Technology in Tongnanba Complex Structural Zone,Northeastern Sichuan
杨炳祥 1何龙 2罗成波 3欧彪 3严焱诚3
作者信息
- 1. 中国石化西南油气分公司产能建设及勘探项目部
- 2. 中国石化西南油气分公司
- 3. 中国石化西南油气分公司石油工程技术研究院
- 折叠
摘要
通南巴构造带受来自米仓山冲断构造带与大巴山弧形冲断构造带的构造叠加作用,断裂和裂缝都较为发育,该区块须家河组以上地层压力低,前期部署的井漏失严重且机械钻速低.文章通过分析应用气体钻井技术的必要性,以井壁稳定、地层可钻性及井眼净化能力适应性评价为基础,形成了以井身结构优化、注气/泡沫参数和钻具组合及钻进参数优化设计为主体的技术方案,成功应用 13 井次,不仅避免了上部地层井漏复杂,并且机械钻速平均提升 6～9 倍以上,为通南巴构造带超万亿方天然气的安全高效开发提供了技术保障.
Abstract
The Tongnanba structural zone is influenced by the structural superposition of the Micangshan thrust structural zone and the Dabashan arc-shaped thrust thrust structural zone,with well-developed faults and frac-tures.The formation pressure above the Xujiahe Formation in this block is low,and in the early-drilled wells oc-cur severe lost circulation and low ROP.In this paper,a technical scheme with the optimization of well depth structure,gas injection/foam parameters,drilling tool combination and drilling parameters optimization design is formed,by analyzing the necessity of applying gas drilling technology and based on the evaluation of wellbore stability,formation drillability,and adaptability of borehole purification ability.The successful application of 13 wells has not only avoided the complexity of lost circulation in the upper formation,but also increased the aver-age penetration rate by more than 6-9 times.This provides technical support for the safe and efficient develop-ment of over one trillion cubic meters of natural gas in the Tongnanba structural belt.
关键词
通南巴复杂构造带/气体钻井/防漏提速Key words
Tongnanba complex structural zone/gas drilling/lost circulation prevention and ROP optimization引用本文复制引用
出版年
2024
NETL
NSTL
维普
万方数据