准噶尔盆地玛南地区乌尔禾组砂砾岩优质储层特征

doi:10.12108/yxyqc.20210504

岩性油气藏 ›› 2021, Vol. 33 ›› Issue (5): 34–44.doi: 10.12108/yxyqc.20210504

准噶尔盆地玛南地区乌尔禾组砂砾岩优质储层特征

王剑^1,2,3, 周路¹, 靳军^2,3, 向宝力^2,3, 胡文瑄⁴, 杨洋^2,3, 康逊⁴

1. 西南石油大学油气藏地质及开发工程国家重点实验室, 成都 610500;
2. 中国石油新疆油田分公司实验检测研究院, 新疆克拉玛依 834000;
3. 新疆砾岩油藏实验室, 新疆克拉玛依 834000;
4. 南京大学地球科学与工程学院, 南京 210023

收稿日期:2021-03-08 修回日期:2021-06-08 出版日期:2021-10-01 发布日期:2021-09-30
第一作者:王剑(1984-),男,硕士,高级工程师,主要从事油气地质、沉积储层方面的研究工作。地址:(834000)新疆克拉玛依准噶尔路29号。Email:wangjian_2605@126.com。
基金资助:
国家科技重大专项“典型盆地深层油气输导格架建立与油气成藏分析”（2017ZX05008-004-008）资助

Characteristics of high-quality glutenite reservoirs of Urho Formation in Manan area,Junggar Basin

WANG Jian^1,2,3, ZHOU Lu¹, JIN Jun^2,3, XIANG Baoli^2,3, HU Wenxuan⁴, YANG Yang^2,3, KANG Xun⁴

1. Stake Key Laboratory of Oil and Gas Reservoir Geology and Exploration, Southwest Petroleum University, Chengdu 610500, China;
2. Research Institute of Experiment and Detection, PetroChina Xinjiang Oilfield Company, Karamay 834000, Xinjiang, China;
3. Xinjiang Laboratory of Petroleum Reserve in Conglomerate, Karamay 834000, Xinjiang, China;
4. School of Earth Sciences and Engineering, Nanjing University, Nanjing 210023, China

Received:2021-03-08 Revised:2021-06-08 Online:2021-10-01 Published:2021-09-30

摘要/Abstract

摘要： 准噶尔盆地玛南地区乌尔禾组砂砾岩油藏具有规模勘探潜力，是增储上产的有利领域。综合应用岩矿鉴定、SEM，XRD、孔渗分析等手段，系统分析乌尔禾组沉积微相、储集空间类型及物性等储层特征和成岩作用。结果表明，该组沉积于浅水扇三角洲体系，发育了7种沉积微相，其中水下河道砂质细砾岩和砂岩物性较好，是储层发育的优势沉积相带。成岩过程中，压实作用、浊沸石等胶结作用显著破坏了原生粒间孔隙，但浊沸石胶结物以及长石碎屑的溶蚀产生了大量的次生孔隙。最终导致储集空间以次生孔隙为主，其次为剩余粒间孔和微裂缝。优质储层的分布受沉积微相、沸石胶结物类型与含量、地质流体活动强度等因素的影响，其发育具有沉积控制、断裂沟通、流体改造"三位一体"的成因模式。断裂沟通下伏烃源灶和水下河道等优势沉积相带，使酸性含油气流体活动增强，有利于浊沸石等矿物发生溶蚀。靠近断裂的水下河道叠置沉积层为乌尔禾组优质储层。

关键词: 扇三角洲, 砂砾岩储层, 储层成因, 乌尔禾组, 准噶尔盆地

Abstract: The glutenite reservoirs of Urho Formation in Manan area of Junggar Basin has large-scale exploration potential and is a favorable field for increasing reserves and production. The sedimentary microfacies, reservoir space types and reservoir properties of Urho Formation were systematically analyzed by means of rock and mineral identification, SEM, XRD and porosity and permeability analysis. The results show that Urho Formation was deposited in shallow water fan delta and seven sedimentary microfacies were developed, of which underwater channel sandy fine conglomerate and sandstone are the dominant sedimentary facies belt for reservoir development due to their good physical properties. During diagenesis, compaction and laumontite cementation significantly damaged primary intergranular pores, whereas the dissolution of laumontite cement and feldspar debris produced a large number of secondary pores. As a result, secondary pores became the dominant reservoir space, followed by residual intergranular pores and microfractures. Overall, the occurrence of high-quality reservoirs is mainly influenced by sedimentary microfacies, zeolite types and their content, and the activity intensity of acid geofluids charging these strata. The high-quality reservoirs were formed in a genesis model of sedimentary controlling-fault connectingacid fluid transforming. In the favorable microfacies such as subaqueous channel, when it had related to underlying source rocks by faults, the activity of acid hydrocarbon-bearing fluids was strong. The fluids promoted the dissolution of laumontite. The superimposed layers of subaqueous channels near the faults are high-quality reservoir of Urho Formation.

Key words: fan delta, glutenite reservoir, reservoir genesis, Urho Formation, Junggar Basin

中图分类号:

TE122.2

王剑, 周路, 靳军, 向宝力, 胡文瑄, 杨洋, 康逊. 准噶尔盆地玛南地区乌尔禾组砂砾岩优质储层特征[J]. 岩性油气藏, 2021, 33(5): 34–44.

WANG Jian, ZHOU Lu, JIN Jun, XIANG Baoli, HU Wenxuan, YANG Yang, KANG Xun. Characteristics of high-quality glutenite reservoirs of Urho Formation in Manan area,Junggar Basin[J]. Lithologic Reservoirs, 2021, 33(5): 34–44.

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准噶尔盆地玛南地区乌尔禾组砂砾岩优质储层特征

Characteristics of high-quality glutenite reservoirs of Urho Formation in Manan area,Junggar Basin

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