塔河超深水平井分段压裂管柱力学分析方法  

Mechanical Analysis Method of the Staged Fracturing String for Ultradeep Horizontal Well in Tahe Oilfield

作　　者：何同[1,2] 岳慧 何祖清[1] 

机构地区：[1]中国石化石油工程技术研究院完井研究所,北京100101 [2]中国石油大学(北京)石油工程学院,北京102249

出　　处：《科学技术与工程》2017年第32期101-106,共6页Science Technology and Engineering

基　　金：国家科技重大专项(2016ZX05021)资助

摘　　要：塔河油田顺托顺南区块奥陶系油藏储层属于超高温超高压超深的缝洞型油藏,由于直井难以实现高效开发,需要采用水平井分段改造技术,实现一井多缝洞体同时开发以提高效益。针对超深水平井压裂管柱温度高、施工压力大,受力复杂等特点,建立了超深水平井分段压裂管柱力学分析模型,并根据不同压裂阶段受力特征,提出了不同压裂工况下管柱力学分析方法。依据所建立模型,以塔河油田顺南某井为例,对分段完井管柱设计进行了不同压裂工况下受力分析,针对发现问题进行了管柱优化,提高了管柱安全性能。分析结果也表明,该模型为超深水平井分段压裂管柱安全校核和优化设计提供了理论依据和方法。The Shuntuo and Shunnan areas in Tahe Ordovician reservoir belong to ultra-high temperature,ultrahigh pressure and ultra-deep fracture-vug gas reservoir.Horizontal well staged stimulation technology was applied to achieve mufti-stages fracturing and improve cave conductivity for economical and efficient development of oilfield.For the high temperature,high operation pressure and complex stress characteristics of ultra-deep horizontal well staged fracturing string,the mechanic analytic model of the ultra-deep horizontal well multistage fracture string was established.The mechanic analysis method for various fracturing conditions was proposed according to the characteristics of different fracturing stages.Based on the model established,taking a Shunnan well as an example,the force analysis for the staged fracturing string was conducted for various fracturing conditions.The sting optimization design was carried out for solving the problems and improving the safety performance.The calculation results also showed that the model established could provide theoretical basis and method for the safety check and optimization design of ultra-deep horizontal well staged fracturing string.

关 键 词：超深井 完井管柱 力学分析 优化设计 

分 类 号：TE323[石油与天然气工程—油气田开发工程]