基于全新隐函数的三维构造建模技术  

3D structural modeling technology based on new implicit function

作　　者：顾晓东 梁琰 张希晨 刘晓波 杜长江 GU Xiaodong;LIANG Yan;ZHANG Xichen;LIU Xiaobo;DU Changjiang(Research&Development Center,BGP,Zhuozhou Hebei 072750,China)

机构地区：[1]东方地球物理公司物探技术研究中心,河北涿州072750

出　　处：《石油化工应用》2022年第11期89-95,共7页Petrochemical Industry Application

基　　金：中国石油集团科学研究与技术开发项目“地震地质工程一体化技术研究”,项目编号:2021DJ3705。

摘　　要：辽河地区潜山内幕构造多变,岩性复杂,储层研究技术手段单一,其中中生界储层砾岩体发育,勘探程度低,潜力大。为了解决复杂构造难题,提高油藏认识精度,通过对辽河地区兴隆台潜山构造带进行研究,从创建复杂构造模型到建立反演初始模型,最终到反演结果验证,通过全流程应用,分析GeoSGD的算法优势、列举本次建模流程中的难点与对应解决方案、验证模型效果,实现了该软件在辽河地区的首次应用。研究表明:(1)基于全新隐函数的三维构造模型能够清晰直观地展现潜山内部的构造形态、地层展布与断裂交切状态;(2)GeoSGD软件适应正逆断层、非通透断层等复杂构造的精细描述,拓扑信息完备,自动化程度高;(3)通过软件构造框架约束井曲线进行反演初始建模,提高了断层附近的地震反演精度;(4)借助三维构造模型软件“边解释,边建模,边质控”的思路,大大提高层位与断层的解释精度,提升解释效率,为油田开发提供更可靠的依据。The inner buried hill in Liaohe area is characterized by complex structures, the variable lithology, and single technical means of reservoir research. Mesozoic reservoir gravels are developed, with low exploration degree and great potential. In order to study the complex structures and improve the accuracy of reservoir prediction, this paper take Xinglongtai buried hill structural belt in Liaohe area as an example to analyze the superior algorithm of Geo SGD, list the difficulties and their solutions in modeling, and verify the results of the model. Our research realizes the first Geo SGD application of complex structure model in Liaohe area, based on the establishment of structure and inversion model and finally verification of inversion results. The results suggest,(1)the 3D structural model can clearly and intuitively show the structural form, stratigraphic distribution and fault intersection in the buried hill.(2)GeoSGD software adapts to the fine description of complex structures such as normal and reverse faults and impermeable faults, with complete topological information and high degree of automation.(3)The initial inversion modeling is carried out by constructing the frame constrained well curve, which improves the inversion accuracy near the faults.(4)Combining structural interpretation with 3D modeling in GeoSGD, the interpretation accuracy of horizons and faults is greatly improved and the interpretation efficiency is improved, which provide more reliable basis for oilfield production.

关 键 词：三维构造建模 GeoSGD软件 辽河地区 兴隆台潜山 

分 类 号：TE132.14[石油与天然气工程—油气勘探]