PETROLEUM EXPLORATION AND DEVELOPMENT ug2000 compounds is larger than that of hydrogen compounds, and it is saturated sands makeup an increasing proportion of the total sands ferred that the difference is result from the strong polarity of VH decreases. @2 At an injection rate of less than 1.0 mL/min pyrrolic nitrogen compounds. As a new kind of migration"tracer oil saturates all the sands comprising the fining upwards sands if pyrrolic nitrogen compound has its advantage. Subject VH is moderate, whereas oil charges only more permeable sands if Crude oil, Biological marker, Pyrrole, Compound, Migration VH is severe. The threshold rate of oil injection, which is mark, Effect, Correlation Research required to charge the least permeable sands in the fining upwards sands, is lower for sands with moderate vh than for those with The vertical micro-migration of hydrocarbon and its near surface severe VH. At the injection rate of C I mL/min, a shorter geochemical effect. ZHAO Ke-bin; et al.(Xi'an Petroleum period of time and a less a ount of oil are reded for sands with Institute, Shaanxi 710065, P. R. China) Kantan Yu moderate V:f in ormer to reach a s eady state of oil migration and Kaifa 2000, 27(4), 99-101. The theoretical basis oi carbon The migration is referring to the i ydroxcartons of deep petroleum accumulating, Oil and gas migration, Permeability contrast, fining fields can pass through the cap and its overlying layers to near upwards sands, Simulation test surface and form geochemical anomali hich can be determine recision instrument and differ obviously fro The relations among the natural earthquake and structural fracture background On the basis of actual geochemical data from a and oil-gas migration. ZHANG Xing-quan; et al. ( Department of etroleum developnent area of Ordos basin, the authors expound Energy Resources, China University of Geosciences, beijing the vertical micro-migration evidence of hydrocarbon, inquire into 100083, P. R. China). Shiyou Kantan Yu Kaifa 2000, 27 (4) near surface geochemical effect which is caused by the vertical 106-108. arthquake forms when crust under the stress is damaged micro-migration of hydrocarbon, build up effective discriminant promptly. The formation of structural fracture and fault (or fault model and apply it to oil and gas bearing prediction of geochemical remobilization) is closely related to the earthquake. The stress field nomalies in studying area, which has got a positive result. Subject of earthquake source is a part of tectonic stress field. The formation heading: Hydrocarbon, Vertical micro-migration, Geochemistry of structural fracture and fault is the result of evolution of tectonic Effect, Anomaly, Analysis stress field. Based on the research of earthquake and the forming time,the tectonic location, distribution and frequency of fracture Experimental simulation of impacts of vertical heterogeneity on oil can be studied. It be concluded from the research that migration and accumulation in fining upwards sands. ZENG Jian- structural fracture has the best cornmunication, which is the hui( University of Petroleum, Beijing 102249, P. R. China). important pathway for the migration of hydrocarbon.The Shiyou Kantan Yu Kaifa 2000, 27(4), 102-105. Experimental tructural fracture parallel in direction to the maximum principal mulation was conducted by 2-D experimental models in order to stress and the previous fault and fracture intersecting with the study the impacts of reservoir vertical heterogeneity on oil migration maximum principal stress at a small angle are the preferential d accumulation in fining upwards sands. The following results directions of hydrocarbon migration. Subject heading: Earthquake ve been obtained: At a constant rate of oil injection racture (rock), Structural control, Forming,Mechanism The oil Edited by TANG Jin-hua 201994-2008ChinaAcademicJournalElectronicPublishingHouse.Allrightsreservedhttp://www.cnki.net〕 丁 , 〕 毛 〕 〔 江 、 】刃乙 刀 耳刃 。 劝 〕 , 仃仪 己 、了 详几 怒 即 “ ” , 厂 〕 刀 , 喇 , 界 , 〕 , 陇 , , 〔为 , 屺 回 而 仪 罗伙 回 价又 卜 ’ , 议 , , 口 , 刀艳 , , 一 叉 阅 面 义 卫 , 而 叉哭汀饭 氏 , 〕 《改叉 伽刀 , 司 〕 〕 口 『 记 。 二 司 详 巧 , 〕 而 而 山 ℃肚 〕 , 叫 仪尤 刀 己 而 价而 」〔 二 玫川 , 叩 即 明 翻 毗 鳍 印 , 即 〕 皿姗 雌 玫狂 , 而 份 , 〔六议 , , 儿 , “ 〕 〕 ” ② , 巴 〔 , 印 ③ , 司 由 哈 发 , 讯 庆 倾 ④ 二 , 犯 以 妇司 〔 初 叹 即 而歹 〔 饭 , , 己 诚 测 」 伙 山 以 吧 , 以 , , 眼 记 , 碑 加艇 树 蛀 呢 而 盯 】 刁 , 玫巧哈 , 从 , 刀‘ , , 一 关 山 司 一 司 〕 〕 而 己 面 己 ① , 司 ℃ 州 〕仪 咙 初 , 巧 别叭 恤 翻叭 眠 阴 · 而『成 又 〔 欲 关 , 仪仪 , 及劝 , , 刀之 , , 一 , 乏 〕 〔 肚 〕 了 拍 〕 叱 司 厂 已 」 哪 乏 〔 玫嵘 〕 五 , 帐 , 币 担 山 』 司 已沃分 以 , 而卯 而 〕 眼 诚 阔 日 刀 犯 比 , 扫 , , 五 , , 压 , 以 而盯 祖 饰