玛湖1井区三叠系白碱滩组二段沉积特征及有利储层预测

程光艺; 周栋华; 李国浩; 王洋; 彭立才

doi:10.3969/j.issn.1006-6535.2024.06.006

特种油气藏 >

2024 , Vol. 31 >Issue 6: 49 - 56

DOI: https://doi.org/10.3969/j.issn.1006-6535.2024.06.006

地质勘探

玛湖1井区三叠系白碱滩组二段沉积特征及有利储层预测

程光艺 ,
周栋华 ,
李国浩 ,
王洋 ,
彭立才

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1.西安科技大学,陕西西安 710054;
2.中国石油新疆油田分公司,新疆克拉玛依 834000;
3.清华大学,北京 100084

程光艺(1998—),男,2021年毕业于西南石油大学测绘工程专业,现为西安科技大学地质工程专业在读硕士研究生,研究方向为石油地质。

收稿日期: 2023-11-23

修回日期: 2024-09-17

网络出版日期: 2025-01-22

基金资助

中国石油新疆油田分公司重大科技专项“准噶尔盆地油藏富集规律及勘探技术研究与应用”(2017E-0401)

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Sedimentary Characteristics and Favorable Reservoir Prediction of the Second Member of the Triassic Baijiantan Formation in Mahu1 Well Area

Cheng Guangyi ,
Zhou Donghua ,
Li Guohao ,
Wang Yang ,
Peng Licai

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1. Xi'an University of Science and Technology,Xi'an,Shaanxi 710054,China;
2. PetroChina Xinjiang Oilfield Company,Karamay,Xinjiang 834000,China;
3. Tsinghua University,Beijing 100084,China

Received date: 2023-11-23

Revised date: 2024-09-17

Online published: 2025-01-22

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摘要

针对玛湖1井区三叠系白碱滩组二段沉积特征及有利储层分布认识不清、油藏评价和储量计算困难等问题,综合利用录井、测井、试油及地震等资料,通过沉积相划分、砂体连井对比、地震属性分析、地震波阻抗反演及地层切片等技术手段,对白碱滩组二段沉积相和有利储层分布进行精细划分与预测。研究表明:白碱滩组二段主要发育三角洲前缘亚相沉积,可进一步划分为水下分流河道、水下分流河道间、席状砂等沉积微相,主体为水下分流河道,水下分流河道由北向南呈舌状展布;三角洲前缘水下分流河道为有利储集相,主要分布在玛湖1井区中北部。该研究成果提出了白碱滩组二段有利储层分布范围新认识,对研究区开展进一步的油藏评价、储量落实及油藏开发均具有重要的指导意义。

关键词： 玛湖1井区; 白碱滩组二段; 沉积相; 沉积模式; 储层预测

本文引用格式

程光艺 , 周栋华 , 李国浩 , 王洋 , 彭立才 . 玛湖1井区三叠系白碱滩组二段沉积特征及有利储层预测[J]. 特种油气藏, 2024 , 31(6) : 49 -56 . DOI: 10.3969/j.issn.1006-6535.2024.06.006

Abstract

This study addresses the unclear understanding of the sedimentary characteristics and favorable reservoir distribution of the Second Member of the Triassic Baijiantan Formation in the Mahu1 Well Area,as well as the difficulties in reservoir evaluation and reserve calculation.A fine division and prediction of sedimentary facies and favorable reservoir distribution in the Second Member of the Baijiantan Formation were conducted by using integrated data such as logging,well testing,oil testing,and seismic data,and techniques such as sedimentary facies division,correlation of sand body connected well,seismic attribute analysis,seismic acoustic impedance inversion,and stratal slicing.The results indicate that the Second Member of the Baijiantan Formation witnesses the main development of delta front subfacies that can be further divided into sedimentary microfacies such as underwater distributary channels,inter-distributary channels,and sheet sands.Its main body consists of underwater distributary channels that exhibit a tongue-like distribution from north to south.The underwater distributary channels at the delta front serve as favorable reservoir facies,primarily distributed in the central and northern parts of the Mahu1 Well Area.This research provides new insights into the distribution range of favorable reservoirs in the Second Member of the Baijiantan Formation,which is of significant importance for further reservoir evaluation,reserve confirmation,and development in the study area.

Key words： Mahu1 Well Area; Second Member of Baijiantan Formation; sedimentary facies; sedimentary model; reservoir prediction

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