顺北地区中—小尺度断控缝洞体地震预测  

Seismic Prediction of Small⁃to Medium⁃Sized Fault⁃Controlled Fracture⁃Cave Bodies in Shunbei Area,Tarim Basin

作　　者：李弘艳[1] 刘军[2] 龚伟[1] 张荣[1] LI Hongyan;LIU Jun;GONG Wei;ZHANG Rong(Research Institute of Exploration and Development,Northwest Oilfield Company,Sinopec,Urumqi,Xinjiang 830011,China;Northwest Oilfield Company,Sinopec,Urumqi,Xinjiang 830011,China)

机构地区：[1]中国石化西北油田分公司勘探开发研究院,乌鲁木齐830011 [2]中国石化西北油田分公司,乌鲁木齐830011

出　　处：《新疆石油地质》2025年第2期240-245,共6页Xinjiang Petroleum Geology

基　　金：中国石化科技部项目(P23137)。

摘　　要：顺北地区发育断控缝洞型油气藏,针对主干断裂带的油气勘探开发取得了较好的效果。除主干断裂带之外,还发育大量中—小尺度断裂,该类型断裂带数量更多、分布更广、尺度更小。受目标埋深(大于8000m)和尺度影响,中—小尺度断裂及其控制的缝洞体在地震资料上响应不清,难以识别和描述。从地震资料解释入手,采用频谱延拓提高分辨率处理和强反射分离技术,增强地震数据的动力学信息,有效凸显了中—小尺度断控缝洞体地震反射特征。根据不同类型储集体特征优选敏感属性,曲波多尺度相干对中—小尺度断裂较敏感,依据杂乱度和分频能量能够较好地识别断裂破碎带和缝洞体。通过对反映不同信息的属性进行融合,实现了中—小尺度断控缝洞体预测和描述。在顺北地区进行应用,有效指导了井位部署,取得了较好的油气开发效果。The Shunbei area in Tarim Basin develops fault-controlled fracture-cave reservoirs,and good results have been achieved in ex-ploration and development of the main fault zones.In addition to the main fault zones,there are numerous small-to medium-sized faults in the area,which are more abundant,widely distributed,and smaller in scale.Due to the target depth(>8000 m)and scale,it is difficult for small-to medium-sized faults and their controlled fracture-cave bodies to get clear seismic responses,so to identify and describe them is hard.Based on seismic data interpretation,spectral extension and strong reflection separation techniques were applied to enhance the kinet-ic information in the seismic data,effectively highlighting the seismic reflection characteristics of the small-to medium-sized fault-con-trolled fracture-cave bodies.Sensitive attributes were selected depending on the characteristics of different types of reservoirs.The multi-scale coherence of curvelet is found to be sensitive to small-to medium-sized faults,and the attributes such as disorderliness and frequency-division energy can be used to effectively identify fault zones and fracture-cave bodies.Small-to medium-sized fault-controlled fracture-cave bodies were successfully predicted and described by integrating the attributes reflecting different information.This technique was ap-plied in the Shunbei area,which effectively guided well deployment,facilitating the oil and gas development.

关 键 词：顺北地区 断控缝洞体 中—小尺度断裂 地震预测 频谱延拓 相干 杂乱度属性 分频能量属性 

分 类 号：TE122[石油与天然气工程—油气勘探]