开发阶段海上复杂断块油田断层解释技术组合及应用  

Fault interpretation techniques for complicated fault-block offshore oilfields in development phase

作　　者：杜昕 张晶玉 范廷恩 张显文 范洪军 DU Xin;ZHANG Jingyu;FAN Ting'en;ZHANG Xianwen;FAN Hongjun(CNOOCRI Ltd.,Beijing 102200,China)

机构地区：[1]中海油研究总院有限责任公司,北京102200

出　　处：《石油物探》2021年第3期450-460,共11页Geophysical Prospecting For Petroleum

摘　　要：测井资料较少、气云区成像质量差等问题常导致传统断层解释技术难以满足海上复杂断块油田开发阶段断层精细刻画的需求。集成边缘保护结构增强滤波、方差蚂蚁体融合属性、变解释测网密度快速断层解释、构造样式分析、三维可视化质控等技术,研究形成了适用于海上复杂断块油田开发阶段的断层解释技术组合。具体流程为:首先开展地震数据解释性处理;随后提取平面导航属性;接着开展剖面平面互动断层解释;然后基于构造样式指导剖面断层组合;最后对成果进行校验并输出。应用该流程完成了老油田A的断裂系统精细解释,在满足解释精度的同时较大程度提升了解释效率,并通过地震剖面与压力测试结果验证了解释成果的合理性,为后续油田滚动挖潜提供了技术支持。Conventional fault interpretation methods are not suitable for complicated fault-block offshore oilfields(CFBOOs)in development phase owing to the lack of well logs and poor signal-to-noise ratio and resolution in the gas-cloud areas.To overcome this issue,several techniques were implemented,namely:an edge-preserving structure-oriented filtering,a variance-ant tracking mixed cube,a variable-grid fast fault interpretation,a prior information analysis of the structural pattern,and a three-dimensional visualization for fault quality control.The main steps of these technique include an interpretation-driven seismic data processing,the extraction of the navigation seismic attributes,a basemap-profile-jointed fault interpretation,a structural-pattern-guided fault assemblage.The aforementioned techniques were combined to achieve a fine interpretation of the fault system in Oilfield A.The results illustrated that this approach is time-saving and can provide high-accuracy fault interpretation,which effectively supports the identification of the remaining oil and the deployment of the adjustment wells.

关 键 词：海上复杂断块油田 开发阶段 解释性处理 断层解释平面导航属性 变解释测网密度快速断层解释 构造样式分析 滚动挖潜 

分 类 号：P631[天文地球—地质矿产勘探]