断层水平井地质导向方法研究与应用  

Geosteering method and application for fault horizontal well

作　　者：徐进宾 吴炎 孙绍令 

机构地区：[1]中国石油长城钻探录井公司

出　　处：《录井工程》2016年第2期20-23,28,共5页Mud Logging Engineering

基　　金：中国石油天然气集团公司重大专项"随钻电磁波成像与测录井解释支持系统研发"(编号:2013E-38-09)

摘　　要：近年来,水平井开发技术在断缝型致密砂岩油藏取得了良好的开发效果。断缝型致密砂岩油藏伴随断层、裂隙发育,具有一定的隐蔽性,而断层受地震预测精度制约仅通过设计识别较为困难,往往会严重影响正钻水平井钻遇效果。为确保满足地质要求,以断层对水平井地质导向的影响为出发点,通过钻前、实钻、钻后不同阶段的地层对比认识,结合实钻井、邻井与断层在空间的相互位置关系,形成断层识别对比方法,同时结合地震剖面综合预测,针对不同断层模式总结过断层水平井的轨迹设计方法,形成一套完整的过断层水平井地质导向方法。该方法已在泾河油田进行广泛应用,并取得了良好的导向实施效果。In recent years,the development technology of horizontal wells has obtained the good development effects in broken seam type of tight sandstone reservoirs.The broken seam type tight sandstone reservoirs have certain concealment because of fault and fracture development,while it is difficult to identify only by design because the fault is constricted by seismic prediction accuracy,which often seriously affects the horizontal well drilling.To meet the demands of geology,the effects of faults on horizontal well geosteering are the basic point of consideration,through different stages of the stratigraphic correlation of pre-drilling,drilling and after-drilling,combining with the spatial position relationship between the real drilling,offset wells and faults,the fault identification and contrast method was formed.Meanwhile combining with the synthetic prediction of seismic profile,in accordance with different fault modes,the crossing-fault horizontal well trajectory design method was summed up and a complete set of geosteering methods were formed for crossing-fault horizontal wells.The method has been widely used in Jinghe oilfield and obtained good geosteering effects.

关 键 词：致密砂岩 油藏 断层识别 水平井 地质导向 井身轨迹 

分 类 号：TE132.1[石油与天然气工程—油气勘探]