高温水热增压实验研究及地质启示

郭志峰; 刘震; 刘鹏; 柳万春

doi:10.11781/sysydz201606836

高温水热增压实验研究及地质启示

doi: 10.11781/sysydz201606836

1.
中海油研究总院, 北京 100028
2. 中国石油大学(北京), 北京 102249
3. 陕西延长石油(集团)有限责任公司研究院, 西安 701169

基金项目: “十二五”国家科技重大专项“南海北部深水区成藏组合评价研究”（2011ZX05025-002-05）资助。

详细信息

作者简介:
郭志峰(1982-),男,博士,工程师,从事油气藏形成与分布研究。E-mail:guozhf@cnooc.com.cn。

中图分类号: TE121.1
计量
- 文章访问数: 918
- HTML全文浏览量: 85
- PDF下载量: 404
- 被引次数: 0
出版历程
- 收稿日期: 2016-05-23
- 修回日期: 2016-10-11
- 刊出日期: 2016-11-28

Experimental analysis of aquathermal pressuring under high temperature conditions and its geological implications

1.
CNOOC Research Institute, Beijing 100028, China
2. China University of Petroleum, Beijing 102249, China
3. Research Institute of Shaanxi Yanchang Petroleum(Group) CoLtd, Xi'an, Shaanxi 710069, China

摘要

摘要: 超压形成机制是沉积盆地油气成藏研究的重要内容。针对温度和封闭条件2个关键因素，设计双轴承压孔隙流体高温水热增压实验，选取典型高温高压盆地的砂、泥岩样品，通过对比性实验发现，在泥岩封闭体系中，升温引起的水热增压导致流体温度与压力表现为指数关系，而非线性关系；在孤立体系中，砂岩孔隙流体水热增压幅度明显高于泥岩封闭体系；在泥岩封闭体系中，泥岩孔隙度微小差异会导致水热增压量存在巨大差异；在相同泥岩封闭条件下，砂岩孔隙度越高，水热增压幅度越大。实验得到两项地质启示：在高温盆地中，被泥岩封闭的砂岩储层内孔隙流体水热增压能够成为盆地超压形成的重要机制，且随着埋深增大，地温升高，指数关系的增压趋势使得水热增压作用更加显著；泥岩的封闭性能决定砂岩储层水热增压的有效性和增压幅度，砂岩储层孔隙度大小影响水热增压幅度的强弱。
- 水热增压 /
- 超压形成机制 /
- 高温水热增压实验 /
- 孤立体系 /
- 泥岩封闭体系
Abstract: Overpressure generation mechanism is very important for the research of hydrocarbon accumulation. We collected samples from typical wells in high temperature basins, made use of a double-axial pressurization testing system for pore fluid aquathermal pressuring, and measured the amplitude of aquathermal pressuring for different geological conditions. Results indicated that the relationship between temperature and pressure was not linear but exponential on the condition of high aquathermal pressuring in shale sealed systems, while the amplitude of aquathermal pressuring in isolated systems was higher than that in shale sealed systems. The fine variation of properties of sealed shales would lead to a large amplitude of aquathermal pressuring in shale sealed systems, and the greater porosity of sand samples would lead to larger amplitude of aquathermal pressuring. Experimental results induced two geological implications. In high temperature basins, aquathermal pressuring in shale sealed systems increases significantly with burial depth. It cannot be neglected and could be one of the main overpressure generation mechanisms. The quality of sealed shale decides the amplitude of aquathermal pressuring, and sand porosity could affect the amplitude of aquathermal pressuring, so in geological conditions, high porosity sand embedded in low porosity shale layers is more likely to lead to aquathermal pressuring.
- aquathermal pressuring /
- overpressure generation mechanism /
- high temperature aquathermal pre-ssuring experiment /
- isolated system /
- shale sealed system

HTML全文

参考文献(19)

[1]	Osborne M J,Swarbrick R E.Mechanisms for generating overpressure in sedimentary basins:A reevaluation:Reply[J].AAPG Bulletin,2001,85(12):2119.
[2]	Swarbrick R E.AADE forum:Pressure regimes in sedimentary basins and their prediction[J].Marine and Petroleum Geology,1999,16(5):483-486.
[3]	曲江秀,查明.准噶尔盆地异常压力类型及成因探讨[J].石油实验地质,2003,25(4):333-336. Qu Jiangxiu,Zha Ming.Origin and characteristics of abnormal pressure in the Junggar Basin[J].Petroleum Geology & Experiment,2003,25(4):333-336.
[4]	郝芳.超压盆地生烃作用动力学与油气成藏机理[M].北京:科学出版社,2005:19-43. Hao Fang.Kinetics of hydrocarbon generation and mechanisms of petroleum accumulation in overpressured basins[M].Beijing:Science Press,2005:19-43.
[5]	刘士林,郑和荣,林舸,等.渤海湾盆地东营凹陷异常压力分布和演化特征及与油气成藏关系[J].石油实验地质,2010,32(3):233-237. Liu Shilin,Zheng Herong,Lin Ge,et al.Distribution and evolution characteristics of abnormal pressure and its relationship with hydrocarbon accumulation in the Dongying Sag of Bohai Bay Basin[J].Petroleum Geology & Experiment,2010,32(3):233-237.
[6]	赵国欣.烃源岩层中异常高压研究:以渤海湾盆地东营凹陷古近系为例[J].石油实验地质,2008,30(4):340-344. Zhao Guoxin.Study of the abnormal high-pressure in hydrocarbon source rocks:Taking Paleogene in the Dongying Sag,the Bohai Bay Basin as an example[J].Petroleum Geology & Experiment,2008,30(4):340-344.
[7]	Barker C.Aquathermal pressuring-Role of temperature in deve-lopment of abnormal-pressure zones:Geological notes[J].AAPG Bulletin,1972,56(10):2068-2071.
[8]	Miller T W,Luk C H.Contributions of compaction and aquathermal pressuring to geopressure and the influence of environmental conditions:Discussion[J].AAPG Bulletin,1993,77(11):2006-2010.
[9]	Liu Funing.Identifying potential gas accumulation sites from Oligocene overpressure data in the Qiongdongnan Basin,off shore South China:Geologic note[J].AAPG Bulletin,1993,77(5):888-895.
[10]	付广,薛永超,杨勉.异常孔隙流体压力的成因及其贡献探讨[J].海相油气地质,1999,4(4):46-50. Fu Guang,Xue Yongchao,Yang Mian.Discussion of generation mechanism and contribution of abnormal pressure[J].Marine Origin Petroleum Geology,1999,4(4):46-50.
[11]	赵喆,钟宁宁,黄志龙.碳酸盐岩烃源岩生烃增压规律及其含义[J].石油与天然气地质,2005,26(3):344-348. Zhao Zhe,Zhong Ningning,Huang Zhilong.Pattern of pressurization from hydrocarbon generation in carbonate source rocks and its significance[J].Oil & Gas Geology,2005,26(3):344-348.
[12]	Swarbrick R E,Osborne M J.Mechanisms that generate abnormal pressures:an overview[M]//Law B E,Ulmishek G F,Slavin V I.Abnormal pressures in hydrocarbon environments.Tulsa:AAPG,1998:13-14.
[13]	Luo Xiaorong,Vasseur G.Contributions of compaction and aquathermal pressuring to geopressure and the influence of environmental conditions:Reply[J].AAPG Bulletin,1993,77(11):2011-2014.
[14]	夏新宇,宋岩.沉降及抬升过程中温度对流体压力的影响[J].石油勘探与开发,2001,28(3):8-11. Xia Xinyu,Song Yan.Temperature effects on geopressure during deposition and erosion[J].Petroleum Exploration and Development,2001,28(3):8-11.
[15]	Bolås H M N,Hermanrud C,Teige G M G.Origin of overpressures in shales:Constraints from basin modeling[J].AAPG Bulletin,2004,88(2):193-211.
[16]	刘震,李潍莲,梁全胜,等.地质思维科学与实践[M].北京:石油工业出版社,2007:101-108. Liu Zhen,Li Weilian,Liang Quansheng,et al.Geological thinking science and practice[M].Beijing:Petroleum Industry Press,2007:101-108.
[17]	谢玉洪,李绪深,童传新,等.莺琼盆地高温超压天然气成藏理论与勘探实践[M].北京:石油工业出版社,2015:74-146. Xie Yuhong,Li Xushen,Tong Chuanxin,et al.Gas accumulation and exploration practice in HTHP formations within Yinggehai-Qiongdongnan basins[M].Beijing:Petroleum Industry Press,2015:74-146.
[18]	Kennedy G C,Holser W T.Pressure-volume-temperature and phase relations of water and carbon dioxide[J].GSA Memoirs,1996,97:371-383.
[19]	黄延辉,刘震,郭志峰,等.南海北部高温断陷地温-地压系统特征及其成藏意义分析[J].地质论评,2013,59(3):470-478. Huang Yanhui,Liu Zhen,Guo Zhifeng,et al.Characteristics of geotemperature-geopressure system in basins with high geotemperature of northern South China Sea and its significance in hydrocarbon accumulation[J].Geological Review,2013,59(3):470-478.