库车坳陷白垩系深层致密砂岩储层溶蚀作用实验模拟研究

曾庆鲁; 张荣虎; 王力宝; 赵继龙; 佘敏

doi:10.14027/j.issn.1000-0550.2018.079

ISSN 1000-0550 CN 62-1038/P

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库车坳陷白垩系深层致密砂岩储层溶蚀作用实验模拟研究

曾庆鲁, 张荣虎, 王力宝, 赵继龙, 佘敏

文章导航 > 沉积学报 > 2018 > 36(5): 946-956

曾庆鲁, 张荣虎, 王力宝, 赵继龙, 佘敏. 库车坳陷白垩系深层致密砂岩储层溶蚀作用实验模拟研究[J]. 沉积学报, 2018, 36(5): 946-956. doi: 10.14027/j.issn.1000-0550.2018.079

引用本文:

ZENG QingLu, ZHANG RongHu, WANG LiBao, ZHAO JiLong, SHE Min. Experimental Simulation for Dissolution of Cretaceous Tight Sand Rocks as Deep Reservoir in Kuqa Depression[J]. Acta Sedimentologica Sinica, 2018, 36(5): 946-956. doi: 10.14027/j.issn.1000-0550.2018.079

Citation:

ZENG QingLu, ZHANG RongHu, WANG LiBao, ZHAO JiLong, SHE Min. Experimental Simulation for Dissolution of Cretaceous Tight Sand Rocks as Deep Reservoir in Kuqa Depression[J]. Acta Sedimentologica Sinica, 2018, 36(5): 946-956. doi: 10.14027/j.issn.1000-0550.2018.079

引用本文:

Citation:

库车坳陷白垩系深层致密砂岩储层溶蚀作用实验模拟研究

doi: 10.14027/j.issn.1000-0550.2018.079

1.
中国石油杭州地质研究院, 杭州 310023;
2.
中国石油集团碳酸盐岩储层重点实验室, 杭州 310023

基金项目: 国家科技重大专项（2016ZX05003-001，2017ZX05001-002）

详细信息

作者简介:
曾庆鲁,男,1985年出生,硕士,工程师,油气储层地质,E-mail:zengql_hz@petrochina.com.cn

中图分类号: P618.130.2⁺1

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文章访问数: 365
HTML全文浏览量: 11
PDF下载量: 454
被引次数: 0

Experimental Simulation for Dissolution of Cretaceous Tight Sand Rocks as Deep Reservoir in Kuqa Depression

1.
PetroChina Hangzhou Research Institute of Geology, Hangzhou 310023, China;
2.
Key Laboratory of Carbonate Reservoir, CNPC, Hangzhou 310023, China

Funds: National Science and Technology Major Project, No. 2016ZX05003-001, 2017ZX05001-002

摘要

摘要: 库车坳陷前陆区白垩系发育特低物性、强非均质性和高稳产砂岩储层，溶蚀作用显著，但成因机制尚不是很明确。利用高温高压热模拟实验还原了目的层在成岩演化过程中1种表生流体和2种埋藏流体环境下溶蚀作用差异，揭示了成岩矿物演化过程及储集空间结构变化特征。结果表明，表生成岩期大气淡水淋滤弱酸性流体环境（CO₂饱和溶液，pCO₂=1 MPa）溶蚀作用最为显著，长石类矿物发生明显溶蚀，石英和黏土矿物相对难溶，Na⁺、Ca²⁺和K⁺等离子析出明显，Si⁴⁺和Al³⁺析出较少，样品表面沉淀出较多的疑似多边形石英和铝硅酸类矿物；成岩晚期油气充注酸性流体环境（乙酸溶液，2 mL/L）溶蚀作用其次，易于溶解白云石、石膏和长石类矿物，Ca²⁺、Mg²⁺、Na⁺和Si⁴⁺等离子析出明显，样品表面无沉淀；成岩早—中期碱性流体环境（NaHCO₃溶液，pH=7.46、HCO₃^-=0.6 mol/L）溶蚀作用相对较弱，石英、长石和部分黏土矿物均发生了不同程度的溶蚀，且随着温度、压力的增加，溶蚀作用程度增加。综合分析表明：表生流体是研究区砂岩储层溶蚀孔隙发育的关键因素，其次为有机酸和碱性埋藏流体。这一认识能够丰富致密砂岩储层孔隙成岩演化理论，为下一步寻找规模储层发育区和气田有效开发提供理论支撑。
- 库车坳陷 /
- 白垩系 /
- 致密砂岩储层 /
- 溶蚀作用 /
- 实验模拟
Abstract: The sandstone reservoirs in the Kuqa foreland area of Tarim Basin have the characteristics of very low physical properties, strong heterogeneity and high-stable production, in which the dissolution of reservoir rocks is significant, but their formation mechanism is not very clear by far. A series of thermal simulation experiments under high temperature and high pressure were performed to restitute the dissolution effects of target layers in addition of one epidiagenetic fluid and two kinds of burial fluids for a better understanding of the diagenetic process, and then to realize the diagenetic evolution of minerals and spatial changes of reservoir structures. In the epidiagenetic stage, there was weak acidic fluid environments leached by atmospheric fresh water and replaced with saturated CO₂ solution (pCO₂=1 MPa) in the experiment. The results showed that the dissolution was very significant and feldspar minerals emerged significant dissolution, while the quartz and clay minerals were relatively insoluble. Na⁺, Ca²⁺ and K⁺ were separated out more obviously with Si⁴⁺ and Al³⁺ less. Many suspected polygonal quartz and aluminosilicate minerals have precipitated on the sample surface. The dissolution was secondary in the acidic environment (instead by acetic acid solution, 2 mL/L) formed by hydrocarbons filling in the later diagenetic stage and dolomite, gypsum and feldspar minerals were easily to be dissolved. Ca²⁺, Mg²⁺, Na⁺ and Si⁴⁺ were separated out apparently without precipitation. The dissolution is relatively weak in NaHCO₃ solution (pH=7.46, HCO₃^-=0.6 mol/L) which is instead of the alkaline environment of early-middle diagenetic stage and the dissolution of quartz, feldspar and clay minerals appeared in different degrees which increase with the increase of temperatures and pressures. Comprehensive analysis showed that superficial fluid was the key factor for dissolved pore development of sandstone reservoirs in the study area, followed by organic acid and alkaline buried fluid. This understanding not only enriches the theory of porosity and genesis evolution of tight sandstone reservoirs, but also provides theoretical support for the next prospecting of scale reserves and effective development of gas fields.
- Kuqa depression /
- Cretaceous /
- tight sand reservoir /
- dissolution /
- experimental simulation

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[1]	肖萌, 袁选俊, 吴松涛, 谢宗瑞, 王成云. 砾岩储层溶蚀作用对储层物性的影响 . 沉积学报, 2023, 41(3): 945-958. doi: 10.14027/j.issn.1000-0550.2021.142
[2]	李峰峰, 郭睿, 余义常, 宋世琦. 伊拉克M油田白垩系Mishrif组沉积特征及控储机理 . 沉积学报, 2020, 38(5): 1076-1087. doi: 10.14027/j.issn.1000-0550.2019.084
[3]	王颖, 王晓州, 廖计华, 朱石磊, 蔡露露. 巴西桑托斯盆地白垩系湖相藻叠层石礁特征及主控因素分析 . 沉积学报, 2016, 34(5): 819-829. doi: 10.14027/j.cnki.cjxb.2016.05.002
[4]	袁静, 杨学君, 袁凌荣, 成荣红, 朱忠谦, 李春堂, 董道涛. 库车坳陷DB气田白垩系砂岩胶结作用及其与构造裂缝关系 . 沉积学报, 2015, 33(4): 754-763. doi: 10.14027/j.cnki.cjxb.2015.04.014
[5]	. 塔里木盆地北部三叠系“二元”层序结构特征及演化模式 . 沉积学报, 2014, 32(2): 325-333.
[6]	刘永福, 赵建华, 范秋海, 林畅松, 叶茂林, 范倩倩, 张荣茜. 塔北隆起中部白垩系卡普沙良群层序地层格架及沉积体系研究 . 沉积学报, 2014, 32(6): 1113-1122.
[7]	. 库车前陆盆地三叠系—新近系重矿物组合特征与盆山构造演化关系 . 沉积学报, 2014, 32(1): 68-77.
[8]	刘畅, 张琴, 谢寅符, 乔李井宇, 孙杰夫, 梅啸寒. 厄瓜多尔Oriente盆地东北部区块白垩系层序地层格架及发育模式 . 沉积学报, 2014, 32(6): 1123-1131.
[9]	潘荣, 朱筱敏, 刘芬, 李勇, 张剑锋. 克拉苏冲断带白垩系储层成岩作用及其对储层质量的影响 . 沉积学报, 2014, 32(5): 973-980.
[10]	张荣虎. 塔里木盆地白垩系巴什基奇克组陆相砂岩中碳酸盐岩碎屑特征及其地质意义 . 沉积学报, 2009, 27(3): 410-418.
[11]	谭秀成王振宇李凌孙崇浩陈景山曹剑. 库车前陆盆地第三系沉积相配置及演化研究 . 沉积学报, 2006, 24(06): 790-797.
[12]	李双建. 碎屑重矿物分析对库车坳陷白垩—第三纪物源变化的指示 . 沉积学报, 2006, 24(1): 28-35.
[13]	严德天王华王家豪王清晨. 库车前陆盆地白垩系层序地层样式及控制因素分析 . 沉积学报, 2006, 24(06): 841-848.
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[15]	. 库车坳陷北部白垩系沉积速率分析 . 沉积学报, 2006, 24(05): 641-649.
[16]	刘建清, 赖兴运, 于炳松, 陈晓林, 隋成. 库车凹陷克拉2气田深层优质储层成因及成岩作用模式 . 沉积学报, 2005, 23(3): 412-419.
[17]	邓云山, 孟自芳, 郑彦鹏. 压实作用与磁倾角变化的实验研究 . 沉积学报, 2001, 19(2): 306-308.
[18]	朱如凯, 魏伟, 张运东. 塔里木盆地库车坳陷新生界终端扇沉积体系与储层研究 . 沉积学报, 1999, 17(S1): 752-757.
[19]	杨俊杰, 张文正, 黄思静, 黄月明, 刘桂霞, 肖林萍. 埋藏成岩作用的温压条件下，白云岩溶解过程的实验模拟研究 . 沉积学报, 1995, 13(3): 83-88.
[20]	杨俊杰, 黄思静, 张文正, 黄月明, 刘桂霞, 肖林萍. 表生和埋藏成岩作用的温压条件下不同组成碳酸盐岩溶蚀成岩过程的实验模拟 . 沉积学报, 1995, 13(4): 49-54.

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库车坳陷白垩系深层致密砂岩储层溶蚀作用实验模拟研究

doi: 10.14027/j.issn.1000-0550.2018.079

1. 中国石油杭州地质研究院, 杭州 310023;

2. 中国石油集团碳酸盐岩储层重点实验室, 杭州 310023

基金项目: 国家科技重大专项（2016ZX05003-001，2017ZX05001-002）

作者简介:
曾庆鲁,男,1985年出生,硕士,工程师,油气储层地质,E-mail:zengql_hz@petrochina.com.cn

收稿日期: 2017-08-07
修回日期: 2017-11-09
刊出日期: 2018-10-10

中图分类号: P618.130.2⁺1

关键词:

白垩系 /

摘要: 库车坳陷前陆区白垩系发育特低物性、强非均质性和高稳产砂岩储层，溶蚀作用显著，但成因机制尚不是很明确。利用高温高压热模拟实验还原了目的层在成岩演化过程中1种表生流体和2种埋藏流体环境下溶蚀作用差异，揭示了成岩矿物演化过程及储集空间结构变化特征。结果表明，表生成岩期大气淡水淋滤弱酸性流体环境（CO₂饱和溶液，pCO₂=1 MPa）溶蚀作用最为显著，长石类矿物发生明显溶蚀，石英和黏土矿物相对难溶，Na⁺、Ca²⁺和K⁺等离子析出明显，Si⁴⁺和Al³⁺析出较少，样品表面沉淀出较多的疑似多边形石英和铝硅酸类矿物；成岩晚期油气充注酸性流体环境（乙酸溶液，2 mL/L）溶蚀作用其次，易于溶解白云石、石膏和长石类矿物，Ca²⁺、Mg²⁺、Na⁺和Si⁴⁺等离子析出明显，样品表面无沉淀；成岩早—中期碱性流体环境（NaHCO₃溶液，pH=7.46、HCO₃^-=0.6 mol/L）溶蚀作用相对较弱，石英、长石和部分黏土矿物均发生了不同程度的溶蚀，且随着温度、压力的增加，溶蚀作用程度增加。综合分析表明：表生流体是研究区砂岩储层溶蚀孔隙发育的关键因素，其次为有机酸和碱性埋藏流体。这一认识能够丰富致密砂岩储层孔隙成岩演化理论，为下一步寻找规模储层发育区和气田有效开发提供理论支撑。

English Abstract

Experimental Simulation for Dissolution of Cretaceous Tight Sand Rocks as Deep Reservoir in Kuqa Depression

1. PetroChina Hangzhou Research Institute of Geology, Hangzhou 310023, China;

2. Key Laboratory of Carbonate Reservoir, CNPC, Hangzhou 310023, China

Funds: National Science and Technology Major Project, No. 2016ZX05003-001, 2017ZX05001-002

Received Date: 2017-08-07
Rev Recd Date: 2017-11-09
Publish Date: 2018-10-10

Keywords:

Abstract: The sandstone reservoirs in the Kuqa foreland area of Tarim Basin have the characteristics of very low physical properties, strong heterogeneity and high-stable production, in which the dissolution of reservoir rocks is significant, but their formation mechanism is not very clear by far. A series of thermal simulation experiments under high temperature and high pressure were performed to restitute the dissolution effects of target layers in addition of one epidiagenetic fluid and two kinds of burial fluids for a better understanding of the diagenetic process, and then to realize the diagenetic evolution of minerals and spatial changes of reservoir structures. In the epidiagenetic stage, there was weak acidic fluid environments leached by atmospheric fresh water and replaced with saturated CO₂ solution (pCO₂=1 MPa) in the experiment. The results showed that the dissolution was very significant and feldspar minerals emerged significant dissolution, while the quartz and clay minerals were relatively insoluble. Na⁺, Ca²⁺ and K⁺ were separated out more obviously with Si⁴⁺ and Al³⁺ less. Many suspected polygonal quartz and aluminosilicate minerals have precipitated on the sample surface. The dissolution was secondary in the acidic environment (instead by acetic acid solution, 2 mL/L) formed by hydrocarbons filling in the later diagenetic stage and dolomite, gypsum and feldspar minerals were easily to be dissolved. Ca²⁺, Mg²⁺, Na⁺ and Si⁴⁺ were separated out apparently without precipitation. The dissolution is relatively weak in NaHCO₃ solution (pH=7.46, HCO₃^-=0.6 mol/L) which is instead of the alkaline environment of early-middle diagenetic stage and the dissolution of quartz, feldspar and clay minerals appeared in different degrees which increase with the increase of temperatures and pressures. Comprehensive analysis showed that superficial fluid was the key factor for dissolved pore development of sandstone reservoirs in the study area, followed by organic acid and alkaline buried fluid. This understanding not only enriches the theory of porosity and genesis evolution of tight sandstone reservoirs, but also provides theoretical support for the next prospecting of scale reserves and effective development of gas fields.

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库车坳陷白垩系深层致密砂岩储层溶蚀作用实验模拟研究

doi: 10.14027/j.issn.1000-0550.2018.079

作者简介:
曾庆鲁,男,1985年出生,硕士,工程师,油气储层地质,E-mail:zengql_hz@petrochina.com.cn

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Experimental Simulation for Dissolution of Cretaceous Tight Sand Rocks as Deep Reservoir in Kuqa Depression

计量

目录

库车坳陷白垩系深层致密砂岩储层溶蚀作用实验模拟研究

doi: 10.14027/j.issn.1000-0550.2018.079

1. 中国石油杭州地质研究院, 杭州 310023;

2. 中国石油集团碳酸盐岩储层重点实验室, 杭州 310023

作者简介:
曾庆鲁,男,1985年出生,硕士,工程师,油气储层地质,E-mail:zengql_hz@petrochina.com.cn

English Abstract

Experimental Simulation for Dissolution of Cretaceous Tight Sand Rocks as Deep Reservoir in Kuqa Depression

1. PetroChina Hangzhou Research Institute of Geology, Hangzhou 310023, China;

2. Key Laboratory of Carbonate Reservoir, CNPC, Hangzhou 310023, China

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库车坳陷白垩系深层致密砂岩储层溶蚀作用实验模拟研究

doi: 10.14027/j.issn.1000-0550.2018.079

作者简介: 曾庆鲁,男,1985年出生,硕士,工程师,油气储层地质,E-mail:zengql_hz@petrochina.com.cn

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Experimental Simulation for Dissolution of Cretaceous Tight Sand Rocks as Deep Reservoir in Kuqa Depression

计量

出版历程

目录

库车坳陷白垩系深层致密砂岩储层溶蚀作用实验模拟研究

doi: 10.14027/j.issn.1000-0550.2018.079

1. 中国石油杭州地质研究院, 杭州 310023; 2. 中国石油集团碳酸盐岩储层重点实验室, 杭州 310023

作者简介: 曾庆鲁,男,1985年出生,硕士,工程师,油气储层地质,E-mail:zengql_hz@petrochina.com.cn

English Abstract

Experimental Simulation for Dissolution of Cretaceous Tight Sand Rocks as Deep Reservoir in Kuqa Depression

1. PetroChina Hangzhou Research Institute of Geology, Hangzhou 310023, China; 2. Key Laboratory of Carbonate Reservoir, CNPC, Hangzhou 310023, China

全文HTML

目录

友情链接

期刊在线

联系我们

作者简介:
曾庆鲁,男,1985年出生,硕士,工程师,油气储层地质,E-mail:zengql_hz@petrochina.com.cn

1. 中国石油杭州地质研究院, 杭州 310023;

2. 中国石油集团碳酸盐岩储层重点实验室, 杭州 310023

作者简介:
曾庆鲁,男,1985年出生,硕士,工程师,油气储层地质,E-mail:zengql_hz@petrochina.com.cn

1. PetroChina Hangzhou Research Institute of Geology, Hangzhou 310023, China;

2. Key Laboratory of Carbonate Reservoir, CNPC, Hangzhou 310023, China