ANALYSIS OF RELATIVE SEALING AND ABSOLUTE PERMEABILITY OF FAULT-TAKING PERMIAN HYDROCARBON CHARACTERISTICS OF THE REGION 8 AND THE BAIKOUQUAN AREA, NORTHWEST MARGIN, THE JUNGGAR BASIN FOR EXAMPLE
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摘要: 通过对准噶尔盆地西北缘八区—百口泉区夏子街组和风城组断层油气藏油气特征的分析,探讨了断层的封闭性与开启性。对于断层油气藏来说,油气特征在平面上的差异与断层封闭性有密切关系。封闭性好的断层油气藏由于油气重力分异作用,从油气藏底部到顶部,原油溶解气和天然气中甲烷等轻组分含量将不断升高,原油密度和粘度会逐渐降低。而封闭性差的断层油气藏越靠近断层,轻组分越容易散失,从油气藏底部到顶部,原油溶解气和天然气中甲烷等轻组分含量将不断降低,原油密度和粘度逐渐升高。不同断层油气藏的各种成藏条件相同时,由于断层封闭性不同,油气总体特征发生变化。研究区断层油气藏上倾部位的断层在不同部位封闭性有差异,断层基本都有不同程度的绝对开启性,而封闭性是相对的。通过对比分析认为八区夏子街组和风城组油气藏的断层封闭性要好于百口泉区。Abstract: In this paper,according to the characteristic analysis of oil and gas of the Xiazijie and Fengcheng Formation in fault oil field of the region 8 and the Baikouquan area of the Northwest margin,the Junggar Basin,the authors discussed the fault's property of sealing and unsealing.Ordinarily,for the fault oil and gas accumulation,there is an intimate relation between the horizontal distribution features of hydrocarbon characteristics and the sealing property of the fault.In a strong sealing fault hydrocarbon reservoir,because of the gravitational force differentiation of oil and gas,the contents of dissolved gas in the crude oil and methane will gradually increase and the density and the viscosity of crude oil will decrease from the bottom to the top of reservoir.While in a poor sealing fault hydrocarbon reservoir,the righter hydrocarbons are easily lost near the fault.From the bottom to the top of the fault reservoir,the contents of dissolved gas in crude oil and methane will gradually decrease and the density and the viscosity of crude oil will increase.When different hydrocarbon reservoirs have same pool formation conditions,the characteristics of oil and gas will have a regularity alteration owing to the different sealing property.In the research area,there is different degree sealing to updip faults of the hydrocarbon reservoir.They have all absolute unsealing and relative sealing.For the hydrocarbon reservoir of the Xaizijie and Fengcheng Formation,there is a relatively better sealing in the region 8 than in the Baikouquan area.
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Key words:
- fault sealing /
- density of crude oil /
- dissolved gas /
- fault reservoir /
- Junggar Basin
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[1] 金之钧,张一伟.油气成藏条件及主要控制因素[M].北京:石油工业出版社,2002. [2] 彭存仓,张博.郯庐中段走滑断裂与新滩地区油气成藏关系[J].石油实验地质,2009,31(3):227－230. [3] 李绪宣,朱光辉.琼东南盆地断裂系统及其油气输导特征[J].中国海上油气,2005,17(1):1-7. [4] 张年富.准噶尔盆地腹部莫索湾地区油气成藏条件与成藏模式[J].石油勘探与开发,2000,27(3):17-20. [5] 王东良,林潼,杨海波,等.准噶尔盆地滴南凸起石炭系气藏地质特征与控制因素分析[J].石油实验地质,2008,30(3):242－246. [6] DAVIES R K.Introduction to AAPG Bulletin thematic issue on fault seals[J].AAPG Bulletin,2003,87:377-380. [7] 吴元燕,平俊彪,吕修祥,等.准噶尔盆地西北缘油气藏保存及破坏定量研究[J].石油学报,2002,23(6):24-28. [8] 付广,王有功.断裂活动时期的垂向开启程度识别方法及其应用[J].油气地质与采收率,2007,14(4):12-14. [9] 郝芳,邹华耀,姜建群.油气成藏动力学及其研究进展[J].地学前缘,2000,7(3):11-21. [10] SMITH D A.Sealing and nonsealing faults in Louisana Gulf Coast salt basin[J].AAPG Bulletin,1980,64:145-172. [11] 付广,段海凤,祝彦贺.原油通过断裂带渗滤运移的物理模拟及其研究意义[J].油气地质与采收率,2006,13(1):40-43. [12] 付广,曹成润,陈章明.泥岩涂抹系数及其在断层侧向封闭性研究中的应用[J].石油勘探与开发,1996,23(6):38-41. [13] 王离迟,杨勇,洪太元,等.准噶尔盆地西缘车排子地区断层封闭性研究[J].石油实验地质,2008,30(1):41－46. [14] 张春林,高先志,李潍莲,等.柴达木盆地尕斯断陷断层封闭性及其对油气运聚的作用[J].石油与天然气地质,2004,25(6):659-665. [15] 吕延防,付广.断层封闭性研究[M].北京:石油工业出版社,2002. [16] 付晓飞,付广,赵平伟.断层封闭机理及主要影响因素研究[J].天然气地球科学,1999,10(3-4):54-62. [17] 全裕科,丁文龙,余腾孝,等.塔里木盆地巴楚隆起同岗断裂封闭性综合评价[J].石油与天然气地质,2008,29(6): 769－773. -
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