多角度汇聚射孔技术  

Multi-angle convergent perforating technology

作　　者：于开勋 刘明 王九州 YU Kaixun;LIU Ming;WANG Jiuzhou(Well Testing&Perforation Company,PetroChina Daqing Oilfield Co.,Ltd.,Daqing,Heilongjiang 163412,China;Development Division of PetroChina Daqing Oilfield Co.,Ltd.,Daqing,Heilongjiang 163002,China;China National Oil and Gas Exploration and Development Co.,Ltd.,Beijing 100034,China)

机构地区：[1]中国石油大庆油田有限责任公司试油试采分公司,黑龙江大庆163412 [2]中国石油大庆油田有限责任公司开发事业部,黑龙江大庆163002 [3]中国石油国际勘探开发有限公司,北京100034

出　　处：《油气井测试》2022年第4期13-17,共5页Well Testing

摘　　要：常规的聚能射孔一般采用螺旋布孔方式,压裂时,部分孔道产生转向缝,甚至在孔道以外的方向产生多条裂缝,一定程度上影响压裂效果。对水平井压裂施工中常用的89型射孔器的射孔弹与枪身不同夹角对穿深影响规律进行分析,排列了定面射孔布弹方式,结合地应力及射孔参数等影响因素,设计出结构合理的汇聚定面射孔器,经地面检测和现场试验,分析井下工艺适应性,形成汇聚定面射孔技术。该技术射孔后能够在择优裂缝面上形成多个稳定的射孔孔眼排布,压裂时能够产生更为有效的、单一的平整光滑裂缝;现场试验数据表明,与常规射孔相比,注入井平均注入强度提高14.75%,平均降低施工破裂压力6.4%,对提升压裂施工效果起到了较好作用。该技术为油田难采储量动用提供了一种新的技术手段。Conventional jet perforating generally create perforations in spiral arrangement;therefore,fracturing treatment may induce reoriented fractures at some perforations or even multiple fractures in the direction beyond the perforations,which affects the fracturing effect to a certain extent.The influence of different angles between the perforating charge and the perforating gun of the HSD89 perforator,which is commonly used in the fracturing operation of horizontal wells,on the penetration depth was analyzed,and the arrangement pattern of perforating charges in definite plane perforating was determined.Combining with the factors such as in-situ stress and perforating parameters,a well-structured convergent definite plane perforator was designed.Through ground inspection and field test,the adaptability of the perforator to downhole process was analyzed.Finally,the convergent definite plane perforating technology was formed.This technology generates multiple stably-arranged perforations on preferred fracture surfaces,so that fracturing process can induce more effective,single and smooth fractures.Field test data show that compared with conventional perforating technologies,the convergent definite plane perforating technology helps the average injection strength of the injection wells increase by 14.75%and the fracturing pressure reduce by 6.4%on average,greatly improving the fracturing effect.This technology provides a new option for producing hard-to-recover reserves in oilfields.

关 键 词：聚能射孔 螺旋布孔 定面射孔 汇聚定面射孔器 地面检测 孔眼排布 破裂压力 压裂效果 

分 类 号：TE257[石油与天然气工程—油气井工程]