哈萨克斯坦南图尔盖盆地Doshan斜坡带岩性油气藏储层预测方法

doi:10.12108/yxyqc.20240401

岩性油气藏 ›› 2024, Vol. 36 ›› Issue (4): 1–11.doi: 10.12108/yxyqc.20240401

哈萨克斯坦南图尔盖盆地Doshan斜坡带岩性油气藏储层预测方法

何文渊¹, 陈可洋²

1. 中国石油国际勘探开发有限公司, 北京 100034;
2. 中国石油大庆油田有限责任公司勘探开发研究院, 黑龙江大庆 163712

收稿日期:2023-10-22 修回日期:2023-11-14 出版日期:2024-07-01 发布日期:2024-07-04
第一作者:何文渊（1974—），男，博士，教授级高级工程师，主要从事油气勘探开发及生产管理工作。地址：（100034）北京市西城区阜成门北大街6号-1国际投资大厦D座。Email：hewenyuan@cnpcint.com。
通信作者: 陈可洋（1983—），男，硕士，高级工程师，主要从事地震技术研发和物探技术攻关工作。Email：keyangchen@163.com。
基金资助:
中油国际项目“2018 年海外探区规划计划研究与勘探动态跟踪分析”（编号：2018-ZC-01-02）资助。

Prediction method for lithologic reservoirs in Doshan slope zone of South Turgai Basin，Kazakhstan

HE Wenyuan¹, CHEN Keyang²

1. China National Oil and Gas Exploration and Development Corporation, Beijing 100034, China;
2. Research Institute of Exploration and Development, PetroChina Daqing Oilfield Co., Ltd., Daqing 163712, Heilongjiang, China

Received:2023-10-22 Revised:2023-11-14 Online:2024-07-01 Published:2024-07-04

摘要/Abstract

摘要： 综合利用钻井、测井、地震等资料，分析了哈萨克斯坦南图尔盖盆地Doshan区块中部斜坡带沉积特征，并提出了一种岩性油气藏储层预测方法，识别出岩性圈闭，地震属性分析验证了储层预测结果的可靠性。研究结果表明：①哈萨克斯坦南图尔盖盆地Doshan斜坡带中—下侏罗统沉积时构造活动强烈，发育少量断裂，以湖相沉积为主，可分为SQ4—SQ6共3个沉积期，分别对应埃巴林组（J₁ab）、多尚组（J₂ds）和卡拉甘塞组（J₂kr），SQ6时期发生大规模湖侵，扇三角洲呈裙带状展布在边缘断层一侧，半深湖范围扩大；三角洲前缘为岩性圈闭发育的有利相带。②储层预测方法为以井-震标定结果确定地层界线，以基于声波曲线重构的岩石物理分析校正井径的影响，以基于调谐厚度的正演模型分析识别砂体，以高分辨率岩性储层地震反演技术对单砂层进行识别。③研究区岩性圈闭主要分布于中—下侏罗统，发育于坡折控砂条件下的一系列构造带上。地震属性分析结果与沉积特征吻合度较高。④研究区中—下侏罗统的坡折位置发育一系列岩性圈闭，在高分辨率地震剖面上表现为强振幅、高阻抗特征，是勘探有利区。

关键词: 斜坡带, 岩性圈闭, 储层预测, 圈闭识别, 正演模拟, 地震反演技术, 岩石物理, 声波曲线重构, 中—下侏罗统, Doshan区块, 南图尔盖盆地, 哈萨克斯坦

Abstract: By comprehensively utilizing drilling，logging and seismic data，the sedimentary characteristics of the central slope zone in the Doshan block of the South Turgai Basin in Kazakhstan were analyzed，and a method for predicting lithologic reservoirs was proposed. The lithologic traps were identified，and their prediction results were verified through seismic attributes. The results show that：（1）During the sedimentation of the MiddleLower Jurassic in Doshan slope zone of South Turgai Basin in Kazakhstan，there were strong tectonic activities， with a small number of faults developed，mainly lacustrine sedimentation. It can be divided into three sedimentary periods：SQ4-SQ6，corresponding to the Ebalin Formation（J₁ab），Doshan Formation（J₂ds），and Karagansai Formation（J₂kr），respectively. During the SQ6 period，large-scale lake intrusion occurred，and the fan delta was distributed in a skirt like pattern on one side of the edge fault，and the semi-deep lake area expanded.The delta front is a favorable facies zone for the development of lithologic traps.（2）The reservoir prediction method is to determine the formation boundary based on well seismic calibration results，correct the influence of wellbore diameter through rock physics analysis based on acoustic curve reconstruction，identify sand bodies through forward modeling based on tuning thickness，and identify single sand layers through high-resolution lithologic reservoir seismic inversion technology.（3）The lithologic traps in the study area are mainly distributed in the Middle to Lower Jurassic，which are developed on a series of structural belts with slope break controlled sand. The seismic attribute analysis results have a high degree of agreement with sedimentary characteristics.（4）A series of lithologic traps are developed in the slope break of Middle-Lower Jurassic in the study area，which exhibit strong amplitude and high impedance characteristics on high-resolution seismic sections，making it a favorable exploration area.

Key words: slope zone, lithologic trap, reservoir prediction, trap identification, forward modeling, seismic inversion technology, rock physics, acoustic curve reconstruction, Middle-Lower Jurassic, Doshan block, South Turgai Basin, Kazakhstan

中图分类号:

TE122

何文渊, 陈可洋. 哈萨克斯坦南图尔盖盆地Doshan斜坡带岩性油气藏储层预测方法[J]. 岩性油气藏, 2024, 36(4): 1–11.

HE Wenyuan, CHEN Keyang. Prediction method for lithologic reservoirs in Doshan slope zone of South Turgai Basin，Kazakhstan[J]. Lithologic Reservoirs, 2024, 36(4): 1–11.

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哈萨克斯坦南图尔盖盆地Doshan斜坡带岩性油气藏储层预测方法

Prediction method for lithologic reservoirs in Doshan slope zone of South Turgai Basin，Kazakhstan

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