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| 元坝地区长兴组沉积特征及对储层的控制作用 | |
| 引用本文： | 范小军. 元坝地区长兴组沉积特征及对储层的控制作用[J]. 西南石油大学学报(自然科学版), 2015, 37(2): 39-48. DOI: 10.11885/j.issn.1674-5086.2013.03.11.01 |
| 作者姓名： | 范小军 |
| 作者单位： | 中国石化勘探分公司，四川成都610041 |
| 基金项目： | 中国石化重点研究项目(P09024) |
| 摘 要： | 元坝长兴组海相气田为中国埋藏最深、以台地边缘礁滩相储层为主的大型礁滩岩性气田，沉积特征对其储层 的发育具有明显的控制作用。但前期主要以沉积的宏观控制作用及静态研究为主，针对沉积对储层控制作用有待深 入研究的客观实际，开展了沉积相划分、展布、迁移、模式及演化等方面的精细研究，对元坝长兴组沉积特征采用地 质、测井、地震联合研究，发现元坝长兴组主要发育6 类沉积相、11 种沉积亚相及10 种沉积微相，其中台地边缘生物 礁相和台地边缘浅滩相分别控制了生物礁和浅滩两套主要储层的生长发育，两套储层分别分布于III 级层序高位体系 域礁、滩相带中，同时储层具有早滩晚礁、前礁后滩及向北东向迁移的发育特征，而在其沉积模式及演化规律的控制 下，长兴组储层生长发育模式主要可分为两类3 种生物礁储层和两类浅滩储层，总体上，生物礁储层较浅滩储层更优 质，礁带区相对于浅滩区油气更易高产富集。 |
| 关 键 词： | 长兴组 沉积特征 生物礁储层 浅滩储层 油气富集区 |
Control Sedimentation Characteristics of Upper Permian ChangxingFormation in Yuanba Area and Its Control Action for Reservoir |
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| Fan Xiaojun. Control Sedimentation Characteristics of Upper Permian ChangxingFormation in Yuanba Area and Its Control Action for Reservoir[J]. Journal of Southwest Petroleum University(Seience & Technology Edition), 2015, 37(2): 39-48. DOI: 10.11885/j.issn.1674-5086.2013.03.11.01 | |
| Authors: | Fan Xiaojun |
| Affiliation: | Branch of Exploration Company，SINOPEC，Chengdu，Sichuan 610041，China |
| Abstract: | Changxing Formation in Yuanba is the deepest & largest marine lithologic gas field，which is characteristic of reefshoal facies reservoir in platform margin，and the sedimentary characteristics obviously controls over the reservoir development. Previous studies are mainly about static researches of sedimentary macro-control. Therefore the author carried out a detailed study on the sedimentary facies division，distribution，migration，patterns and evolution through the joint research of geology， logging and seismic，and found out that in the Yuanba Changxing Formation there have developed six kinds of sedimentary facies，eleven sorts of sedimentary subfacies and ten sorts of microfacies，among which the platform margin reef facies and shoal facies control the growth & development of the reef reservoir and shoal reservoir separately. The two sets of reservoirs are mainly distributed in the reef & shoal facies of grade III sequence highstand system tract. Besides，the reservoir bears the features of early beach and late reef in the longitudinal direction，front reef and back beach and the migration to northeast on the lateral distribution. Under the control of sedimentary facies pattern & evolution，the reservoir growth and development patterns can be divided into two kinds & three patterns of reef reservoirs and two kinds of shoal reservoirs. Generally，the reef reservoir quality is better than that of the shoal reservoir and the reef zones is more favorable for enrichment and high production of oil & gas than the shoal zones. |
| Keywords: | Changxing Formation；sedimentary characteristics；reef reservoir；shoal reservoir；oil &gas enrichment area |
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