大庆石油地质与开发2012，Vol.31Issue(1)：101-105,5.DOI:10.3969/J.ISSN.1000-3754.2012.01.020
海拉尔深部南屯组高含泥储层压裂增产技术
FRACTURING STIMULATION TECHNOLOGY FOR HIGH SHALE-CONTENT RESERVOIRS IN LOWER ZUUNBAYAN FORMATION IN THE DEEP OF HAILAR BASIN
摘要
Abstract
The high shale-content reservoirs in Lower Zuunbayan Formation in the deep of Hailar Basin are characterized by large buried depth, many rock types, complex lithology, high shalecontent and many sand-shale inter-beds , which leads to high-closure pressure gradient, complex near-wellbore fracture morphology, big near-wellbore friction resistance and high operation pressure during fracturing operations. Therefore, how to handle the near-wellbore fracture morphology, reduce the filtration of fracturing liquid, repress the clay swelling and reduce the friction resistance and pressure of operation have become the key of the operation success in Lower Zuunbayan Formation. Though the analyses of operation difficulties of Lower Zuunbayan Formation, the suitably technical countermeasures are proposed, and a fracturing liquid formula system of delaying cross-link and having low-friction resistance is developed. Moreover, the on-site diagnosis and control measures for fracturing operation are formed. There are 153 wells in field application, and the success rate is 94. 8% . The average liquid production rate per well at early stage after fracturing is 10. 36 m /d, the average liquid production intensity is 0. 98 m3/ (m · d) , the average oil production rate per well is 5. 72 t/d, the average oil production intensity is 0. 46 t/ (m · d) , and a good operation effect is obtained. This technique can provide an importantly technical guarantee for the future exploration and development of Hailar Basin.关键词
砂泥互层/闭合压力梯度/泥质含量/摩阻Key words
sand-shale interbed/ closure pressure gradient/ shale-content/ friction resistance分类
能源科技引用本文复制引用
肖丹凤,张宗雨,韩松,刘琦,杨海英..海拉尔深部南屯组高含泥储层压裂增产技术[J].大庆石油地质与开发,2012,31(1):101-105,5.基金项目
国家自然科学基金"全三维水力裂缝在砂泥岩界面上扩展特性研究"项目(51004023)资助. （51004023）
