呼图壁气田高效开发的技术对策

Technical measures for high-efficient development of the Hutubi Gas Field

气田的高效开发是建立在对其地质特征的认识、开发方案的制订、开发过程的调控和开发规律的把握基础上的。呼图壁气田为典型的砂岩气田,经过开发前期的科学评价,使多学科综合技术相互配合、相互渗透,创立了气田开发的地下地面一体化开发评价模式;利用现代试井解释技术,落实了气藏地质储量,确定了气田合理采气速度,优化配置了单井产量,并通过均衡压力剖面、产水规律等方面的综合研究成果与应用经验,实现了气田连续稳产10 a的高效开发,形成了一套砂岩气藏高效开发技术对策。对该气田开发效果的评价结果表明,气田投资回收期短,累计创产值36.63亿元,实现了稀井高产,对高效开发同类气藏具有借鉴意义。

High efficient development of a gas field depends on a better understanding of its geological features,a full plan of its development project,and advanced management of development process and regulation.A case history of the Hutubi Gas Field provides reference for the high efficient development of such typical sandstone gas fields with a series of technical measures specifically summarized.Based on a scientific pre-assessment on the Hutubi Gas Field,an integrated evaluation system with assistance of multiple technologies was first developed including a reservoir's geological features and engineering,drilling and production engineering,and ground techniques.Then the whole process tracking evaluation work was also conducted as follows: the connectivity of gas layers was verified by interference well test;the geological gas reserves were approved by pressure-drop,volumetric and dynamic fitting methods;a reasonable gas recovery rate was determined by advanced simulation methods;the single well production was optimized by a systematic well test.Moreover,by application and research of balanced pressure section and water production regulation,this field had achieved a 10-year high performance recovery effect since 1998.From the post-evaluation of this field's development,we found that this field has achieved not only a high production by sparse wells,but an obvious economic profit,particularly,by the end of 2008,a production value of 3.663 billion Yuan(RMB) had been obtained in this field within a short investment payback period.