川东北铁山坡、七里北地区飞仙关组沉积特征及有利储集区带预测

姚敏; 胡忠贵; 武赛军; 周刚; 胡九珍; 毕宇航

doi:10.14027/j.issn.1000-0550.2024.090

ISSN 1000-0550 CN 62-1038/P

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川东北铁山坡、七里北地区飞仙关组沉积特征及有利储集区带预测

姚敏, 胡忠贵, 武赛军, 周刚, 胡九珍, 毕宇航

文章导航 > 沉积学报 > 2024 > 优先发表

姚敏, 胡忠贵, 武赛军, 周刚, 胡九珍, 毕宇航. 川东北铁山坡、七里北地区飞仙关组沉积特征及有利储集区带预测[J]. 沉积学报. doi: 10.14027/j.issn.1000-0550.2024.090

引用本文:

Sedimentary Facies Characteristics and Prediction of Favorable Reservoir Zone of Feixianguan Formation in Tieshanpo and Qilibei Area, Northeast Sichuan Basin[J]. Acta Sedimentologica Sinica. doi: 10.14027/j.issn.1000-0550.2024.090

Citation:

Sedimentary Facies Characteristics and Prediction of Favorable Reservoir Zone of Feixianguan Formation in Tieshanpo and Qilibei Area, Northeast Sichuan Basin[J]. Acta Sedimentologica Sinica. doi: 10.14027/j.issn.1000-0550.2024.090

引用本文:

Citation:

川东北铁山坡、七里北地区飞仙关组沉积特征及有利储集区带预测

doi: 10.14027/j.issn.1000-0550.2024.090

1.
长江大学
2.
中国石油西南油气田公司勘探开发研究院

基金项目: 国家级-“十三五”国家重大专项“重点海相层系沉积相研究”(2016ZX05007002)

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Sedimentary Facies Characteristics and Prediction of Favorable Reservoir Zone of Feixianguan Formation in Tieshanpo and Qilibei Area, Northeast Sichuan Basin

摘要

摘要: 【目的】四川盆地下三叠统飞仙关组发育厚层鲕滩储层，是当前油气勘探的重点层位。铁山坡、七里北地区飞仙关组作为四川盆地后备战略接替领域，其沉积体系、储层特征及有利区带分布尚不明确，制约了该区油气勘探部署。【方法】基于岩心、岩石薄片、测井和地震资料综合分析，对铁山坡、七里北地区下三叠统飞仙关组沉积相类型、演化规律及有利储集区带展开研究。【结果】研究区飞仙关组发育镶边型台地沉积模式，可细分为局限台地、开阔台地、台地边缘、斜坡及盆地五种沉积相，台地边缘为鲕滩发育有利相带；区内鲕滩发育具有明显加积-进积特征，纵向上多为2-3期叠置而成，在ssq2-ssq4时期均有分布，以ssq2时期规模最大。横向上滩体发育不稳定，具有向盆内迁移的趋势；储集岩类型主要为（残余）鲕粒灰岩、（残余）鲕粒白云岩及粉-细晶白云岩。【结论】台缘鲕滩是飞仙关组储层发育的有利微相，孔-渗条件良好；铁山坡地区坡5井-坡西1井-坡2井-坡1井一带为有利储层发育区带，七里北地区七里北1井-七北102井一带为潜在的有利储层发育区带。四级层序格架内不同地区滩体的时空分布及迁移规律、有利储集区带预测成果等可为深化该区鲕滩储层勘探开发提供依据。
- 川东北地区 /
- 飞仙关组 /
- 台缘滩 /
- 沉积演化 /
- 有利储集区带
Abstract: [Objective]The Lower Triassic Feixianguan Formation in Sichuan basin develops thick oolitic beach reservoirs, which is the key layer of current oil and gas exploration. As the reserve strategic replacement field of Sichuan Basin, the sedimentary system, reservoir characteristics and favorable zone distribution of Feixianguan Formation in Tieshanpo and Qilibei areas are not clear, which restricts the deployment of oil and gas exploration in this area. [Methods]Based on the comprehensive analysis of core, rock slice, logging and seismic data, the sedimentary facies types, evolution rules and favorable reservoir zones of the Lower Triassic Feixianguan Formation in Tieshanpo and Qilibei areas were studied. [Results]The Feixianguan Formation in the study area develops a rimmed platform model, which can be subdivided into five sedimentary facies:restricted platform, open platform, platform edge, slope and basin. The platform margin is the favorable facies belt for the development of oolitic beach. The development of oolitic shoals in the area has obvious aggradation-lateral accretion characteristics, which are mostly superimposed in 2 to 3 periods vertically, and are distributed in ssq2 to ssq4 periods, with the largest scale in ssq2 period. Horizontally, the beach body is unstable and has a tendency to migrate into the basin; The reservoir rock types are mainly (residual) oolitic limestone, (residual) oolitic dolomite and powder crystal-fine crystal dolomite. [Conclusions]The platform margin oolitic beach is a favorable microfacies for reservoir development in Feixianguan Formation, and the porosity and permeability conditions are good. The area of wells Po5-Poxi1-Po2-Po1 in the Tieshanpo area is a favorable reservoir development zone, and the area of wells Qilibei1-Qibei102 in Qilibei area is a potential favorable reservoir development zone.The spatial and temporal distribution and migration law of beach bodies in different areas of the fourth-order sequence framework and the prediction results of favorable reservoir zones can provide a basis for deepening the exploration and development of oolitic beach reservoirs in this area.
- Northeast Sichuan Basin /
- Feixianguan Formation /
- Platform marginal shoal /
- Depositional evolution /
- Favorable reservoir zone

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川东北铁山坡、七里北地区飞仙关组沉积特征及有利储集区带预测

doi: 10.14027/j.issn.1000-0550.2024.090

1. 长江大学

2. 中国石油西南油气田公司勘探开发研究院

基金项目: 国家级-“十三五”国家重大专项“重点海相层系沉积相研究”(2016ZX05007002)

收稿日期: 2024-03-04
网络出版日期: 2024-09-13

关键词:

台缘滩 /

摘要: 【目的】四川盆地下三叠统飞仙关组发育厚层鲕滩储层，是当前油气勘探的重点层位。铁山坡、七里北地区飞仙关组作为四川盆地后备战略接替领域，其沉积体系、储层特征及有利区带分布尚不明确，制约了该区油气勘探部署。【方法】基于岩心、岩石薄片、测井和地震资料综合分析，对铁山坡、七里北地区下三叠统飞仙关组沉积相类型、演化规律及有利储集区带展开研究。【结果】研究区飞仙关组发育镶边型台地沉积模式，可细分为局限台地、开阔台地、台地边缘、斜坡及盆地五种沉积相，台地边缘为鲕滩发育有利相带；区内鲕滩发育具有明显加积-进积特征，纵向上多为2-3期叠置而成，在ssq2-ssq4时期均有分布，以ssq2时期规模最大。横向上滩体发育不稳定，具有向盆内迁移的趋势；储集岩类型主要为（残余）鲕粒灰岩、（残余）鲕粒白云岩及粉-细晶白云岩。【结论】台缘鲕滩是飞仙关组储层发育的有利微相，孔-渗条件良好；铁山坡地区坡5井-坡西1井-坡2井-坡1井一带为有利储层发育区带，七里北地区七里北1井-七北102井一带为潜在的有利储层发育区带。四级层序格架内不同地区滩体的时空分布及迁移规律、有利储集区带预测成果等可为深化该区鲕滩储层勘探开发提供依据。

English Abstract

Sedimentary Facies Characteristics and Prediction of Favorable Reservoir Zone of Feixianguan Formation in Tieshanpo and Qilibei Area, Northeast Sichuan Basin

Received Date: 2024-03-04
Available Online: 2024-09-13

Keywords:

Abstract: [Objective]The Lower Triassic Feixianguan Formation in Sichuan basin develops thick oolitic beach reservoirs, which is the key layer of current oil and gas exploration. As the reserve strategic replacement field of Sichuan Basin, the sedimentary system, reservoir characteristics and favorable zone distribution of Feixianguan Formation in Tieshanpo and Qilibei areas are not clear, which restricts the deployment of oil and gas exploration in this area. [Methods]Based on the comprehensive analysis of core, rock slice, logging and seismic data, the sedimentary facies types, evolution rules and favorable reservoir zones of the Lower Triassic Feixianguan Formation in Tieshanpo and Qilibei areas were studied. [Results]The Feixianguan Formation in the study area develops a rimmed platform model, which can be subdivided into five sedimentary facies:restricted platform, open platform, platform edge, slope and basin. The platform margin is the favorable facies belt for the development of oolitic beach. The development of oolitic shoals in the area has obvious aggradation-lateral accretion characteristics, which are mostly superimposed in 2 to 3 periods vertically, and are distributed in ssq2 to ssq4 periods, with the largest scale in ssq2 period. Horizontally, the beach body is unstable and has a tendency to migrate into the basin; The reservoir rock types are mainly (residual) oolitic limestone, (residual) oolitic dolomite and powder crystal-fine crystal dolomite. [Conclusions]The platform margin oolitic beach is a favorable microfacies for reservoir development in Feixianguan Formation, and the porosity and permeability conditions are good. The area of wells Po5-Poxi1-Po2-Po1 in the Tieshanpo area is a favorable reservoir development zone, and the area of wells Qilibei1-Qibei102 in Qilibei area is a potential favorable reservoir development zone.The spatial and temporal distribution and migration law of beach bodies in different areas of the fourth-order sequence framework and the prediction results of favorable reservoir zones can provide a basis for deepening the exploration and development of oolitic beach reservoirs in this area.

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川东北铁山坡、七里北地区飞仙关组沉积特征及有利储集区带预测

doi: 10.14027/j.issn.1000-0550.2024.090

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Sedimentary Facies Characteristics and Prediction of Favorable Reservoir Zone of Feixianguan Formation in Tieshanpo and Qilibei Area, Northeast Sichuan Basin

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川东北铁山坡、七里北地区飞仙关组沉积特征及有利储集区带预测

doi: 10.14027/j.issn.1000-0550.2024.090

1. 长江大学

2. 中国石油西南油气田公司勘探开发研究院

English Abstract

Sedimentary Facies Characteristics and Prediction of Favorable Reservoir Zone of Feixianguan Formation in Tieshanpo and Qilibei Area, Northeast Sichuan Basin

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川东北铁山坡、七里北地区飞仙关组沉积特征及有利储集区带预测

doi: 10.14027/j.issn.1000-0550.2024.090

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Sedimentary Facies Characteristics and Prediction of Favorable Reservoir Zone of Feixianguan Formation in Tieshanpo and Qilibei Area, Northeast Sichuan Basin

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出版历程

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川东北铁山坡、七里北地区飞仙关组沉积特征及有利储集区带预测

doi: 10.14027/j.issn.1000-0550.2024.090

1. 长江大学 2. 中国石油西南油气田公司勘探开发研究院

English Abstract

Sedimentary Facies Characteristics and Prediction of Favorable Reservoir Zone of Feixianguan Formation in Tieshanpo and Qilibei Area, Northeast Sichuan Basin

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目录

友情链接

期刊在线

联系我们

1. 长江大学

2. 中国石油西南油气田公司勘探开发研究院