Lateral Structure Compression and Its Influence on Sandstone Diagenesis—A Case Study from the Tarim Basin
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摘要: 从塔里木盆地库车坳陷下侏罗统和西南坳陷白垩系的构造样式、古构造应力值与砂岩成岩压实作用之间相互关系的研究 ,明确提出了构造侧向挤压对砂岩成岩压实有重要的影响 ,它造成的压实减孔量可以是砂岩总压实减孔量的 2 .5 %～ 2 3.6 %。库车坳陷克孜勒努尔 -乌恰沟地区为断层转折褶皱 ,其南翼为高构造应力带、变形强烈 ,它引起的构造挤压减孔量为 5 .6 %～ 6 .6 % ,占总压实减孔量的 17.6 %～ 2 3.6 % ;而吐格尔明地区为断层传播褶皱 ,其南翼的构造变形较弱 ,构造挤压减孔量仅 1.9%～ 2 .1%。西南坳陷七美干地区位于逆冲推覆构造带的中带 ,构造挤压减孔量为 4.9% ,占总压实减孔量的 17.6 % ;而位于前锋带的同由路克地区受构造侧向挤压作用的影响很小。Abstract: The article presents the viewpoint that lateral structure compression had an important effect on sandstone diagenetic compaction through the study on the relationship amoang the structure deformation,paleostructure stress and sandstone diagenetic compaction of lower Jurassic of Kuqa depression and Cretaceous of Xinan depression in Tarim Basin.The porosity loss caused by lateral structure compression was 2.5%～23.6% percentage of bulk porosity loss of sandstones. The porosity loss to structure compression of Kezilesuer and Wuqiaguo areas were 5.6%～6.6% and 17.6%～23.6% percentage of bulk porosity loss of sandstones because of heavy structure deformation,and one of Tugeerming area was 1.9%～2.1% owing to weak structure deformation in Kuqa depression.Qimeigan area in Xinan depression, located in the middle belt of thrust nappe,had porosity loss to structure compression of 4.9% and 17.6% percentage of bulk porosity loss of sandstones,and Tongyouluke area, located in the front belt of thrust nappe, was very small porosity loss to structure compression.
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Key words:
- sandstone compaction /
- structural compression /
- Tarim basin
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[1] 1］罗元华,孙雄.不同应力状态下地层渗透系数的变化及其对流体运移影响的数值模拟研究[J].地球学报,1998, 19(2):144～149[Lou Y, Sun X. Variation of permeability coefficient of strata under different stresses and their numeric al models for their influence on fluid migration[J]. Acta Geoscientia Sinica, 1998, 19(2): 144～149]
［2］寿建峰,斯春松,朱国华等.塔里木盆地库车坳陷下侏罗统砂岩储层性质的控制因素[J].地质论评,2001,47(3): 273～277[Shou J, Si C, Zhu G, et al. T he Control Factors of properties of lower Jurassic Sandstone Reservoirs in Kuqa Depression Tarim Basin[J]. Geologic Review, 2001,47(3): 272～277]
［3］Amthor J E, Okkerman J. Influence of early diagenesis on reservoir qualit y in Rotliegenbe sandstones, Northern Netherlands[J]. AAPG Bulletin, 1998, 82 (2): 2246～2265
［4］贾承造.中国塔里木盆地构造特征与油气[M].北京: 石油工业出版社, 1997. 348～364[Jia C. Structure and oil-gas in Tarim basin, China[M].Beijing: Pe troleum Industry Press, 1997. 348～364]
［5］刘本培.西南天山构造格局与演化[M].北京:中国地质大学出版社,1997.231～215 [Liu B.Tectonic pattern and evolution of the southwestern Tianshan[M].Beij ing: Geological Press, 1997. 231～215]
［6］刘志宏,卢华复,李西建等. 库车前陆盆地的构造演化[J]. 地质科学,2000,35 (4):482～492[Liu Z, Lu H, Li X, et al. Tectonic evolution of Kuqa rejuvenated foreland basin[J]. Scientia Geologica Sinica, 2000, 35(4):482～492]
［7］姜光熹,刘兆霞.X射线岩组学[M]. 北京:地质出版社,1997.131～143[Jiang G, Liu Z.X-ray petrofabrics[M].Beijing: Geological Publishing House, 1997.131 ～143]
［8］胡玲.显微构造地质学概论[M].北京:地质出版社,1998.137～141[Hu L. A pan orama of microstructure geology[M]. Beijing: Geological Publishing House, 199 8.137～141]
［9］寿建峰,朱国华.砂岩储层孔隙保存的定量预测研究[J]. 地质科学,1998,32(2): 244～249[Shou J, Zhu G.Study on quantitative prediction of porosity preserev ation in sandstone reservoirs[J]. Scientia Geologica Sinica, 1998, 32(2): 244 ～249] -
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