川东北河坝区块井身结构的优化与实践  

Casing Optimization and Practice at Heba Block of Northeastern Sichuan Basin

作　　者：唐志军[1] 

机构地区：[1]中国石化胜利石油管理局钻井工艺研究院,山东东营257017

出　　处：《石油钻探技术》2011年第1期73-77,共5页Petroleum Drilling Techniques

摘　　要：川东北地区地质环境复杂,不仅给钻探工作带来诸多困难,同时对井身结构设计优化也提出了更高的要求。在简要分析该地区钻井技术难点的基础上,综合考虑钻井工艺水平、配套工具、货源、压力平衡关系、工程约束条件、事故发生概率等相关因素,应用系统工程原理,对川东北河坝区块的井身结构进行了优化与研究。重点对河坝1井井身结构进行了跟踪评价和钻后优化,形成了川东北地区两套井身结构优化设计方案。优化后的三开井身结构系列在河坝区块应用3口井,均大幅度缩短了钻井周期和建井周期,取得了良好的应用效果。The complexity of the geologic environment in Northeast Sichuan Basin brings a lot of difficulties for exp nalysis of drill oration and presents higher requirement for casing program optimization. Based on brief ang technical difficulties in this region, the casing program was studied and optimized using systems engineering principles with the consideration of drilling technology, drilling tools, formation pressure, drilling capability and down hole trouble etc.. The follow up evaluation and post drilling optimization were conducted in casing program of Well Heba 1. Two casing program optimization designs in Northeast Sichuan Basin were developed. The optimized 3-spud casing program were used for 39 wells in Puguang gasfield,the optimized 4-spud casing program were used for 3 wells in Heba block. All the drilling cycles were significantly shortened and good results were obtained.

关 键 词：井身结构 优化设计 川东北地区 河坝1井 

分 类 号：TE22[石油与天然气工程—油气井工程]