阿姆河大斜度酸性气井永久分段完井工艺  

Permanently-segregated completion technology of highly-deviated acidic gas well in Amu Darya

作　　者：孙杰文[1] 程维恒 吴志均[1] 王鹏[1] 邵昭媛[1,3] 

机构地区：[1]中国石油勘探开发研究院廊坊分院,河北廊坊065007 [2]中国石油阿姆河天然气勘探开发公司,北京100010 [3]中国科学院渗流流体力学研究所,河北廊坊065007

出　　处：《石油钻采工艺》2014年第2期68-71,共4页Oil Drilling & Production Technology

基　　金：国家科技重大专项示范工程"高压碳酸盐岩酸性气田钻完井配套技术研究与应用"(编号:2011ZX-05059-002)

摘　　要：分段完井已逐渐成为水平井、大斜度井储层保护、控水及分段改造的主要手段。基于膨胀橡胶的遇油遇水膨胀封隔器是分段完井的关键工具。系统总结了此类封隔器的技术特征与应用特性,进行了胀封机理、影响因素研究,给出了胀封后主要技术指标及5种结构类型遇油膨胀封隔器的技术特点。研究结果表明,酸、碱、盐溶液对于已膨胀橡胶影响幅度小于10%,遇油膨胀封隔器具有结构简单、操作方便、坐封可靠、多次膨胀及永久膨胀等明显技术优势。阿姆河气田BP101D井是一口高温、高压、高含硫大斜度井,预测产量超过110×104 m3/d,底部完井工艺设计采用遇油膨胀封隔器与增产滑套为核心工具的永久分段完井管柱组合,储层的成功分段为后期的找堵水、定点有效控水、分段改造提供了技术窗口,为高产气井可持续高效采气提供了技术支持和保障。The segregated completion technique has been the main method to protect the reservoir of highly-deviated/horizontal wells, control water and perform staged stimulation. The oil/water swelling packer which is based on swelling rubber is the key tool for segregated completion technology. This paper summarizes the technical and application feature systematically, studies the swelling seal-ing mechanism and inlfuence factors have been carried on research and providing the main technical indicators after packer swelling and technical features of ifve types of swelling packers. The results show that the inlfuence of acid, alkali and salt on the swelling rubber are less than 10%and the oil swelling packer has the outstanding technical advantages of easy operation, reliable setting, multi-expansion and permanent expansion. For the application in BP101D, a highly deviated/high temperature, high pressure, high sulfur well in Amu Darya Gas Field, it is predicted that the yield is more than 110×10^4 m^3/d. The bottom well completion technology use permanently-seg-regated completion string which takes the oil swelling packer and sliding sleeve as core tools. The successful segmentation of reservoir provides a technical window for future water blocking, effective water control at ifxed point and staged stimulation, and the technical support and guarantee for continuous production of high-yield gas.

关 键 词：阿姆河气田 酸性气井 分段完井 套管外封隔器 遇油膨胀 

分 类 号：TE257[石油与天然气工程—油气井工程]