松辽盆地北部中央坳陷带异常压力条件下地层水化学特征及其成岩响应

雷振宇; 解习农; 孟元林; 黄卫; 杜学斌; 肖丽华; 孟凡晋; 焦金鹤; 魏巍

doi:10.11781/sysydz201301081

松辽盆地北部中央坳陷带异常压力条件下地层水化学特征及其成岩响应

doi: 10.11781/sysydz201301081

1.
中国地质大学(武汉) 构造与油气资源教育部重点实验室, 武汉 430074
2. 东北石油大学地球科学学院, 黑龙江大庆 163318

基金项目: 国家自然科学基金(40872076);中国博士后科学基金第三批特别资助(201003654);中央高校基本科研业务费专项资金(CUGL100252)联合资助。

详细信息

作者简介:
雷振宇(1983- ),男,博士生,从事地层异常压力、地质流体及成岩作用研究。E-mail:leizhenyu0912@gmail.com。

中图分类号: TE133.2
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出版历程
- 收稿日期: 2012-03-07
- 修回日期: 2012-11-28
- 刊出日期: 2013-01-28

Chemical features and diagenesis reactions of formation water under abnormal pressure in central depression of northern Songliao Basin

1.
Key Laboratory of Tectonics and Petroleum Resources of Ministry of Education, China University of Geosciences, Wuhan, Hubei 430074, China
2. Faculty of Earth Science, Northeast Petroleum University, Daqing, Heilongjiang 163318, China

摘要

摘要: 在对松辽盆地中央坳陷带压力系统进行系统分析的基础上,结合研究区大量地层水资料,通过对比,研究地层水离子组合特征及其对异常压力条件下成岩作用的响应。研究表明,异常压力环境对地质流体及成岩作用有明显影响。超压和低压均能使地层水矿化度升高,但是影响机制不同。不同压力体系水型不一样,主要发生的成岩作用也不同。超压和常压体系主要为NaHCO₃型和NaCl型水,成岩作用以矿物的溶解作用为主。而低压体系主要为CaCl₂型水,成岩作用以钙长石的钠长石化为主。
- 异常压力 /
- 地层水 /
- 成岩作用 /
- 中央坳陷带 /
- 松辽盆地
Abstract: The pressure system in the central depression of the Songliao Basin was analyzed systematically. A large amount of data about formation water was studied and compared, based on which the ions pattern as well as the diagenesis reaction of formation water were discussed. It has been concluded that abnormal pressure obviously influences geofluid and diagenesis. Both overpressure and underpressure can increase TDS; however, their influencing mechanisms are different. Water type varies in different pressure systems, leading to different diagenesis effects. In overpressure and normal pressure systems, NaHCO₃ and NaCl type water is dominant, and the dissolution of minerals works as the main diagenesis effect. As to underpressure system, CaCl₂ type water is dominant, and the main diagenesis effect is the albitiztion of feldspar.
- abnormal pressure /
- formation water /
- diagenesis effect /
- central depression /
- Songliao Basin

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参考文献(26)

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