深层低渗透油藏纤维加砂压裂工艺技术  

Fiber-laden sand fracturing technique for deep low permeability reservoirs

作　　者：盖玉磊[1] 薛仁江[2] 

机构地区：[1]中石化胜利油田分公司,山东东营257001 [2]中石化胜利石油管理局,山东东营257077

出　　处：《特种油气藏》2011年第1期121-125,142,共5页Special Oil & Gas Reservoirs

基　　金：国家科技重大专项"渤海湾盆地精细勘探关键技术"(2008ZX05006)

摘　　要：水力压裂是胜利油田深层低渗透油藏增产的一项主要技术。通过对深层低渗透油藏压裂技术的攻关,取得了一定的突破,但也发现压裂工艺存在一定的问题。为此,选用胜利油田深层低渗透储层改造常用的2种压裂液体系,通过实验,针对纤维对压裂液体系成胶和破胶性能的影响、纤维在压裂液中的分散性以及纤维与原油混合是否发生反应等方面进行了评价。在此基础上,对选定的BF-2型纤维对支撑剂导流能力的影响进行了测试。实验结果表明,该工艺可以应用到胜利油田深层低渗透油井压裂。对该工艺的适用性进行了分析,指出了其存在的不足,并提出了今后攻关的方向。Hydraulic fracturing is the main stimulation treatment for deep low permeability reservoirs in the Shengli oilfield.Two conventional fracturing fluid systems used to stimulate deep low permeability reservoirs in the Shengli oilfield are selected to evaluate through experiments the effect of fiber on gelling and gel-breaking performance of the fracturing fluid systems,the dispersion of fiber in fracturing fluid,and whether fiber and oil can react when mixed.On this basis,the effect of BF-2 fiber on flow conductivity with proppant is tested.The result of the experiments shows that the technique can be applied to fracturing in deep low permeability wells in the Shengli oilfield.Through field application,the applicability of the technique is analyzed,the shortcomings are pointed out and future research directions are proposed.

关 键 词：深层 低渗透油藏 纤维加砂 压裂 应用效果 胜利油田 

分 类 号：TE357.2[石油与天然气工程—油气田开发工程]