渤中34-2/4油田外置式复合射孔技术  

External composite perforation technology in the Bozhong oilfield

作　　者：马英文 付团辉 吴泽林 龙海峰 MA Yingwen;FU Tuanhui;WU Zelin;LONG Haifeng(Engineering and Technology Operation Center,CNOOC Tianjin Branch,Tianjin 300459,China;Chuannan Astronautics Energy Technology Co.,Ltd.,Luzhou,Sichuan 646000,China;COSL Tianjin Branch,Tianjin 300459,China)

机构地区：[1]中海石油(中国)有限公司天津分公司工程技术中心,天津300459 [2]川南航天能源科技有限公司,四川泸州646000 [3]中海油田服务股份有限公司天津分公司,天津300459

出　　处：《油气井测试》2018年第1期31-36,共6页Well Testing

摘　　要：渤中34-2/4油田位于渤海南部海域,属于中低孔-低渗、特低渗储层,采用普通射孔作业时,聚能射孔弹射孔后形成射孔压实带,严重影响油井产能。结合该油田储层特点,采用外置式复合射孔技术对低孔、低渗地层进行补孔增产作业。该技术是一种新型复合火药射孔技术,由起爆、传爆、聚能射孔、气体压裂、井下做功数据实时采集系统,以及地面数据处理系统组成,具有动态超正压破缝的特点,施工作业前采用模拟技术软件优化射孔方案,施工过程中采用井下高速压力计实时监测压力变化,施工后采用三维声波测试仪检测施工效果。在BZ34-2/4-B7井现场应用表明,该技术对低孔、低渗储层改造效果显著,日产液由2~4m^3提高到28m^3,且作业简单,安全可靠,可为海上同类储层的开采提供借鉴。Bozhong 34-2/4 Oilfield in the southern Bohai Sea is dominated by reservoirs with medium to low porosity,and low to ultra-low permeability.When conventional perforation technology is used,perforation with jet charges generates compacted zones,which may severely impact the productivity of oil producers.In view of the property of this oilfield,the external composite perforation technology was used to conduct perforation adding and stimulation.This technology is an innovative perforation solution involving composite charges,and includes the ignition,transmission,jet charge perforation,gas fracturing,down-hole data real-time acquisition system and surface data processing system.It can achieve dynamic overpressure fracturing,through perforation scheme optimization by simulation assessment before operation,real-time pressure monitoring with downhole high-speed pressure gauge during operation,and performance inspection via 3D sonic detectors after operation.Field application in Well BZ34-2/4-B7 reveals outstanding performance in low-porosity and low-permeability formation,with daily fluid production enhanced from 2-4 m 3 to 28 m 3.The proposed technology is simple,safe and reliable,and can draw lessons for similar reservoirs.

关 键 词：渤中油田 低孔低渗储层 储层改造 外置式复合射孔 超正压破缝 实时监测 

分 类 号：TE353[石油与天然气工程—油气田开发工程]