活性自均向稠化酸解堵技术在克拉玛依油田的应用  

A Surfactants Controlling in-Situ Gelling and Self-Diverting Acidizing Fluid and Its Use for Reservoir Blockage Relieving at Karamay Oil Fields

作　　者：宋继宇[1] 陈涛[1] 唐祖友[1] 刘生福[1] 郭军[2] 张兵涛[3] 赵守清[2] 王丽萍[1] 李志远[1] 

机构地区：[1]中原油田采油工程技术研究院防腐所,河南濮阳457001 [2]中石油新疆油田分公司石西作业区,新疆克拉玛依834000 [3]中原油田采油五厂,河南濮阳457001

出　　处：《油田化学》2001年第2期117-119,共3页Oilfield Chemistry

摘　　要：报道了将活性自均向稠化酸用于高温高压裂缝 孔隙型油藏油井酸化解堵的技术。概括介绍了活性自均向稠化酸的作用原理、基本组成、性能和解堵工艺 。The principles, slug structure, performance properties, and field trial of the titled acidizing fluid are presented. The gel formation and creation of self diverting function are caused by the interaction of different surfactants from successive slugs at low pH values. It consists of foregoing surfactant, pad and main acid slugs with 2nd and 3rd surfactants, and displacer. Its self diverting ability is determined in experiments on parallel cores with and without fractures, its corrosivity is weak and reaction rate with rock is low. The field trial on acidization of HTHP carboniferous fractured porous reservoir at Shixi, Karamay, for blockage relieving in 9 wells of 10 is successful and leads to enhanced oil productivity. The acids used are hydrochloric, phosphoric and hydrofluoric in mixture.

关 键 词：稠化酸 地下稠化 自均向 表面活性剂 酸化 解堵 裂缝-孔隙型油藏 克拉玛依油田 

分 类 号：TE357.2[石油与天然气工程—油气田开发工程]