超正压射孔对联150井的改造  

Reconstruction of Lian 150 Well by Extreme Overbalanced Perforation

作　　者：杨保海[1] 王永清[1] 谢建华[1] 

机构地区：[1]西南石油大学,四川成都610500

出　　处：《测井技术》2009年第2期189-192,共4页Well Logging Technology

摘　　要：联150井须二段井段长、埋藏深、温度及压力高、低孔隙度、低渗透率且天然裂缝发育,该段为致密砂岩层,钻井时污染严重。使用水力压裂产生的主裂缝沟通天然裂缝能力差,对严重污染的储层难以很好地改造。通过对超正压射孔分析及在联150井的实施改造,测试结果表明,改善了该井由于钻井时发生大量的泥浆滤失造成的储层伤害,提高了产量并进一步正确认识了目的层的储量。Lian 150 well T3X^2 group is a deep interval with high temperature and pressure, low porosity and permeability, and better natural fracture growth. The interval is a compacted sandstone layer in which the reservoir is seriously polluted in drilling operations. Since communicating ability between hydraulically-created main fractures and natural fractures is poor, effect of reconstruction of the seriously-polluted reservoir is not very ideal. Analyzed is the technology of extreme overbalanced perforation（EOP）, reconstructed is Lian 150 well with EOP. Practice test resuits show that the reconstructed Lian 150 well reservoir is improved, the well output is increased. So, we obtained the correct reservs in the above interval of interest.

关 键 词：石油射孔 超正压射孔 污染 储层改造 联150井 

分 类 号：TE257.1[石油与天然气工程—油气井工程]