摘要
针对准噶尔盆地玛湖地区百口泉组储层非均质性强的地质特征,进行了压裂施工射孔工艺优化,分析了常规深穿透射孔、深穿透重复射孔和等孔径重复射孔等3种技术,开展了地面模拟试验及玛18井区百一段A、B两口水平井现场试验。试验结果表明:等孔径射孔的孔眼具有较大的孔径和较好的孔眼一致性;玛湖地区砂砾岩储层采用常规深穿透射孔,不进行酸处理无法达到设计排量;深穿透重复射孔能有效减少酸处理,比另外两种技术更有效;对于非均质性较强的储层,深穿透重复射孔穿深会降低;采用高孔密射孔技术补偿可获得期望的产率比,重复射孔难实现对同一位置的两次有效射孔。研究结果可为砂砾岩储层压裂施工提供技术参考。
To address the strong heterogeneity of the reservoirs in the Baikouquan Formation in the Mahu area of the Junggar Basin,a study on the optimization of the perforation for fracturing treatment is carried out.The conventional deep-penetrating perforation,deep-penetrating repeated perforation and equal-aperture repeated perforation are analyzed.Ground test and field test were carried out on two horizontal wells of the Well A and Well B targeting the First Member of the Baikouquan Formation in the Ma 18 well area.The test results show that the perforations of equal-aperture perforation have larger consistent apertures.The glutenite reservoir in the Mahu area adopts conventional deep-penetration perforation,and the designed displacement cannot be achieved without acid treatment.Deep-penetration repeated perforation can effectively reduce acid treatment,which is more effective than the other two technologies.For reservoirs with strong heterogeneity,the depth of deep penetration repeated perforation will be reduced.High density perforation technology could be used to compensate to attain the desired yield ratio,and repeated perforation is difficult to achieve two effective perforations at the same position.The research results can provide technical references for fracturing treatment of glutenite reservoirs.
作者
郭长永
李雅飞
于会永
范海燕
周福建
梁天博
Guo Changyong;Li Yafei;Yu Huiyong;Fan Haiyan;Zhou Fujian;Liang Tianbo(Engineering Technology Research Institute of PetroChina Xinjiang Oilfield Company;China University of Petroleum(Beijing);Quality Equipment Energy Saving Department,PetroChina Xinjiang Oilfield Company)
出处
《石油机械》
北大核心
2020年第9期51-58,共8页
China Petroleum Machinery
基金
“十三五”国家科技重大专项“超深裂缝性气藏井筒失稳机理及转向工艺优化研究”(2016ZX05051-03)
国家科技重大专项之子课题“致密油富集规律与勘探开发关键技术”(2016ZX05046-004)。
关键词
砂砾岩
重复射孔
深穿透
酸处理
试挤
glutenite
repeated perforation
deep penetration
acid treatment
acid injection trial
