DISCUSSION ON THE PORE TYPES OF THE TRIASSIC SANDSTONE IN THE TULUFAN-HAMI BASIN AND THE FORMATION MECHANISM OF SECONDARY PORES
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摘要: 依据X-衍射、岩石薄片、扫描电镜、岩石物性等分析测试资料,详细研究并阐述了吐哈盆地三叠系砂岩的储层物性特征、次生孔隙类型及其形成机理。综合分析认为,吐哈盆地三叠系储层主要为中上三叠统长石质岩屑砂岩,孔隙类型以次生孔隙为主,储层物性相对较差,总体属于中孔-低渗或低孔-低渗性储层;吐哈盆地三叠系砂岩在成岩作用过程中发育形成了较为有利的裂隙-溶蚀型次生孔隙,构成该盆地三叠系砂岩储层的主要油气储集空间类型。Abstract: According to the X ray diffraction, rock thin section, scanning electron microscope, rock physical property and other testing data, the physical property features of reservoirs and the types and formation mechanism of secondary pores for the Triassic sandstone of the Tulufan Hami Basin were discussed and expounded in detail. The comprehensive analyses showed that the Triassic reservoirs of the Tu Ha basin are mainly the Middle Upper Triassic feldspathic litharenite,and the pore types are dominated by secondary pores. As the reservoirs have relatively poor physical properties, they belong to medium porosity and low permeability or low porosity and low permeability resrvoirs on the whole. During the diagenesis of the Triassic sandstone in the Tu Ha Basin, the more favorable fissure solution typed secondary pores were developed, which constitute the major hydrocarbon bearing space types of the Triassic sandstone in the Basin.
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Key words:
- secondary pore /
- diagenesis /
- the Triassic sandstone /
- the Tulufan Hami Basin
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[1] 李文厚,林晋炎,袁明生,等.吐鲁番-哈密盆地的两种粗碎屑三角洲[J].沉积学报,1996,14(3):113-120. [2] 赵文智,李伟,张研.吐哈盆地鲁克沁稠油藏成藏过程初探与勘探意义[J].石油勘探与开发,1998,25(2):1-3. [3] 邸世祥.中国碎屑岩储集层的孔隙结构[M].西安:西北大学出版社,1991.1-6,210-220. [4] 罗蛰潭,王允诚.油气储集层的孔隙结构[M].北京:科学出版社,1986.198-225. [5] 刘林玉,柳益群,陈刚.吐鲁番坳陷中-上侏罗统碎屑岩中的自生粘土矿物特征及其成岩意义[J].岩石学报,1998,14(2):258-268. [6] 陈刚,刘林玉.吐鲁番-哈密盆地丘陵地区油气储集层特征[J].西北地质,1998,19(4):39-44. [7] 赵文智,袁非,曾晓明.吐鲁番-哈密盆地的构造特征[J].石油学报,1992,13(3):9-17. [8] 刘林玉.吐鲁番-哈密盆地中生界砂岩次生孔隙研究[J].石油实验地质,1996,18(3):317-324. [9] 刘林玉,曲志浩,孙卫.新疆鄯善油田碎屑岩中的粘土矿物特征[J].西北大学学报(自然科学版),1998,28(5):443-446. -
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