Experiment of dolomite dissolution in stress state and its geologic significance
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摘要: 白云岩储层发育在很大程度上取决于成岩作用改造,溶蚀作用是其中最重要的一环。基于对川东北地区长兴组、飞仙关组白云岩储层的研究,针对储层中裂缝、微裂缝等构造形迹与溶蚀孔隙之间的密切关系,在前人相关研究和实验基础上,通过受力状态下白云岩溶蚀实验,探讨了裂缝(微裂缝)对于白云岩溶蚀作用的影响,表明裂缝发育能促进溶蚀作用的进行,构造形变(裂缝)影响下的埋藏溶蚀可能是白云岩储层主要的改造机制。Abstract: The generation of dolomite reservoir mainly depends on diagenetic deformation,among which dissolution is the most important.Dolomite reservoirs in the Changxing and Feixianguan Formations of the northeastern Sichuan Basin were studied.The relationship between dissolution pores and structural features such as cracks or micro-cracks in reservoirs were analyzed.The experiment of dolomite dissolution in stress state was carried out and the influences of cracks or micro-cracks on dolomite dissolution were discussed.It was concluded that the development of cracks was favorable for dissolution,and the burial dissolution under structural deformation was the most important deformation effect for dolomite reservoir.
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Key words:
- dolomite /
- dissolution /
- reservoir deformation /
- crack /
- structural deformation
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[1] 马永生,蔡勋育,李国雄.四川盆地普光大型气藏基本特征及成藏富集规律[J].地质学报,2005,79(6):858-865. [2] 蔡勋育,马永生,李国雄,等.普光气田下三叠统飞仙关组储层特征[J].石油天然气学报(江汉石油学院学报),2005,27(1):43-45. [3] 郑荣才,胡忠贵,冯青平,等.川东北地区长兴组白云岩储层的成因研究[J].矿物岩石,2007,27(4):78-84. [4] 郑荣才,耿威,郑超,等.川东北地区飞仙关组优质白云岩储层的成因[J].石油学报,2008,29(6):815-821. [5] 杨威,魏国齐,金惠,等.川东北飞仙关组鲕滩储层发育的主控因素和成因模式[J].天然气地球科学,2007,18(2):192-196. [6] 管宏林,王恕一,蒋小琼.普光气田埋藏溶孔特征及识别标志[J].天然气工业,2010,30(3):31-34. [7] 管宏林,蒋小琼,王恕一,等.普光气田与建南气田长兴组、飞仙关组储层对比研究[J].石油实验地质,2010,32(2):130-135. [8] 罗开平,黄泽光,蒋小琼,等.川东北地区优质碳酸盐岩储层改造机制探讨[J].石油实验地质,2011,33(6):559-563. [9] 王恕一,蒋小琼,管宏林.川东北地区普光气田飞仙关组储层孔隙演化[J].石油实验地质,2009,31(1):26-30. [10] 蔺军,周芳芳,袁国芬.塔河地区寒武系储层深埋藏白云石化特征[J].石油与天然气地质,2010,31(1):13-21,27. [11] 杨玉芳,钟建华,陈志鹏,等.塔中地区寒武-奥陶系白云岩成因类型及空间分布[J].石油与天然气地质,2010,31(4):455-462. [12] 李得立,谭先锋,夏敏全,等.东营凹陷沙四段湖相白云岩沉积特征及成因[J].断块油气田,2010,17(4):418-422. [13] 朱光有,张水昌,梁英波,等.硫酸盐热化学还原反应对烃类的蚀变作用[J].石油学报,2005,26(5):48-52. [14] 曾德铭,王兴志,王思仪,等.溶蚀在川东北储层演化中的意义[J].西南石油大学学报,2007,29(1):15-18. [15] 朱光有,张水昌,梁英波,等.TSR对深部碳酸盐岩储层的溶蚀改造:四川盆地深部碳酸盐岩优质储层形成的重要方式[J].岩石学报,2006,22(8):2182-2194. [16] 张建勇,刘文汇,范明,等.TSR产物对碳酸盐岩储层是否具有改良作用:实验地质学的依据[J].海相油气地质,2008,13(2):57-61. -
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