【作者】 马媛媛；

【导师】 申家年；

【作者基本信息】 大庆石油学院 ， 油气田地质工程， 2010， 硕士

【摘要】 在含油气盆地的向斜区寻找勘探目标是石油地质学中的新领域。到目前为止向斜成藏机制还未成熟,本文的研究具有重要的理论意义和实践参考价值。本论文以他拉哈向斜葡萄花油层为主要研究对象,开展了向斜成藏机制的研究,本项研究以综合地质分析为基础,充分利用他拉哈向斜区现有的钻井、测井、地震、地化、分析测试资料,采用叠合的方法研究了齐家古龙凹陷他拉哈向斜油藏成藏条件、油藏分布规律等。本文归纳出的葡萄花油层在超压控制下流体的运移模式是从地质角度说明向斜成藏的必要条件。经油源对比和烃源岩研究,认为研究区葡萄花油层的油来源于青山口组。对储层岩石学特征进行了研究,表明本区砂岩成分成熟度较低,结构成熟度中等。对储层物性特征的研究结果为葡萄花油层属中孔、低渗储层,孔隙度、渗透率低值区主要分布在凹陷中心,而埋深相对浅和物源方向的孔渗较好。并且葡萄花油层孔隙度和渗透率分布不均匀。证实了油层超压主要来自超压系统内部的压力传递;内部原油的热裂解对储层也有一定贡献。对油层超压和青山口组泥岩超压的分布表明青山口组目前扔在生烃并向葡萄花油层供烃,并且认为这是向斜成藏的重要物质条件。滞留效应是向斜成藏的重要封挡条件。另外本文认为超压也可以为向斜成藏起到封挡作用。指出向斜区油藏类型主要为岩性油藏。确定了油气成藏时期。在此基础上,总结出了他拉哈向斜油气藏形成模式向斜区成藏主控因素分析和成藏机制的研究,完善了向斜区成藏理论,为今后向斜区评价开发指明方向。更多还原

【Abstract】 Syncline basins containing oil and gas exploration target area is looking for a new field of oil geology. Far syncline forming mechanism has been mature, this study has important theoretical significance and practical reference value. This paper has targan syncline Putaohua as the main object of study, carried out the study syncline forming mechanism, this study integrated geological analysis, based on full use of targan syncline area of existing drilling, testing wells, seismic, ground-based, analytical test data, using the method of superposition of the Qijia Gulong Depression targan syncline reservoir forming conditions, reservoir distribution patterns. This article sum up the pressure in the ultra-Putaohua under the control of the migration patterns of fluid from a geological point of view shows syncline forming the necessary conditions.The oil-source correlation and hydrocarbon source rock studies, that the study area Putaohua oil from qn. On the reservoir rock characteristics were studied, indicating that this region a lower sandstone compositional maturity, structure, maturity medium. Physical characteristics of the reservoir study of the genus Putaohua porosity, low permeability reservoir, porosity, permeability low value area is mainly distributed in depression center, and a relatively shallow depth and the direction of the source material better porosity and permeability. And Putaohua uneven distribution of porosity and permeability. Confirmed the reservoir overpressure overpressure within the system come mainly from the pressure of passing; inside the thermal cracking of crude oil also has contributed to the reservoir. Right reservoir overpressure and overpressure shale Qingshankou Qingshankou the distribution of that group is now thrown into the hydrocarbon reservoir for the hydrocarbons to the grape flowers, and think that this is an important material syncline reservoir conditions. Residual effect is an important Fengdang syncline reservoir conditions. Another paper that the excess pressure can also play a Fengdang syncline forming role. Pointed out that the syncline area is mainly lithologic reservoir reservoir type. Identified oil and gas accumulation period. On this basis, summed up targan syncline syncline reservoir area into a reservoir formation model controlling factors and accumulation mechanism of the study, improve the syncline area into a reservoir theory syncline area for the future development of the specified evaluation direction.更多还原