青西油田的裂缝特征
|
摘要
本文从岩心和测井资料出发,研究酒泉盆地青西油田裂缝的类型和微观特征,通过区域构造背景和断裂特征分析,研究裂缝分布规律及与构造的关系,进而应用地震属性分析,结合钻井和测井资料对裂缝进行预测,得出以下认识:①下白垩统下沟组块状砂砾岩和泥质白云岩为典型的特低孔、低渗储层,裂缝为最主要的油气储集空间和运移通道,各种类型构造裂缝均有发育,但高角度裂缝和斜交缝对油气富集最为有效;②断层控制了裂缝的发育方向,裂缝发育带展布方向和断裂发育带展布方向基本一致,主要为北北东向和北西西向;③构造转折部位和断层交会带为构造应力集中的部位,裂缝发育;④裂缝的发育程度控制了油气的富集程度,北北东向调节断层产生的裂缝带是油气富集带。结合裂缝预测结果,在青西油田部署的L104井获得64m3/d的高产工业油流。
From the core and logging data,in this article fracture types and microscopic features are analyzed in Qingxi Oilfield,Jiuquan Basin.Fracture distributions and their relation with geological structure are discussed based on regional tectonic background by seismic attributes,drilling and log data.The following observations are obtained.1.Massive sandstone and argillaceous dolomite in the Xiagou of lower Cretaceous are typical low porosity and low permeability reservoirs.Fractures are major hydrocarbon pore volumes and migration pathways.Various types of tectonic fractures are developed,but the high angle fracture and oblique fractures are the most effective to oil and gas accumulation.2.Faults control the fracture development direction.The direction of fracture development belt and that of fault development belt are basically same,mainly to the NNE and NWW.3.The position of tectonic transition and fault intersection is a center of tectonic stress concentration and fracture development.4.Crack growth controls oil and gas enrichment.The crack belt of NNE adjusting faults is an oil and gas enrichment zone.Using fracture prediction result,the newly defined Well L104 acquires high-productive oil flow with 64m3 per-day.
From the core and logging data,in this article fracture types and microscopic features are analyzed in Qingxi Oilfield,Jiuquan Basin.Fracture distributions and their relation with geological structure are discussed based on regional tectonic background by seismic attributes,drilling and log data.The following observations are obtained.1.Massive sandstone and argillaceous dolomite in the Xiagou of lower Cretaceous are typical low porosity and low permeability reservoirs.Fractures are major hydrocarbon pore volumes and migration pathways.Various types of tectonic fractures are developed,but the high angle fracture and oblique fractures are the most effective to oil and gas accumulation.2.Faults control the fracture development direction.The direction of fracture development belt and that of fault development belt are basically same,mainly to the NNE and NWW.3.The position of tectonic transition and fault intersection is a center of tectonic stress concentration and fracture development.4.Crack growth controls oil and gas enrichment.The crack belt of NNE adjusting faults is an oil and gas enrichment zone.Using fracture prediction result,the newly defined Well L104 acquires high-productive oil flow with 64m3 per-day.
引文
[1]闫伟鹏,朱筱敏等.酒西坳陷青西油田下白垩统储层裂缝研究.石油勘探与开发,2004,31(1):54～56Yan Wei-peng,Zhu Xiao-min et al.Fractures in thelower Cretaceous reservoir of Qingxi oilfield,Jiuxidepression,Northwest China.Petroleum Explorationand Development,2004,31(1):54～56
[2]王允诚.油气储层评价.北京:石油工业出版社,1999
[3]吴辉,谭修中,孙万高等.窟窿山油藏下沟组裂缝型储集层测井评价.新疆石油地质,2004,25(3):274～276Wu Hui,Tan Xiu-zhong,Sun Wan-gao et al.Welllog evaluation of fractured reservoir of Xiagou forma-tion in Kulongshan reservoir.Xinjiang PetroleumGeology,2004,25(3):274～276
[4]周晓峰,赵应成,王崇孝等.青西油田裂缝性油藏研究.新疆地质,2006,24(1):40～44Zhou Xiao-feng,Zhao Ying-cheng,Wang Chong-xiaoet al.Research of the fracture reservoirs in Qingxioilfield.Xinjiang Geology,2006,24(1):40～44
[5]赵贤正,夏义平,潘良云,谢结来.酒泉盆地南缘山前冲断带构造特征与油气勘探方向.石油地球物理勘探,2004,39(2):222～227Zhao Xian-zheng,Xia Yi-ping,Pan Liang-yun andXie Jie-lai.Structural character of foreland thrust beltof Jiuquan basin south margin and oil/gas explorationdirection.OGP,2004,39(2):222～227
[6]贾承造,何登发,雷振宇等.前陆冲断带油气勘探.北京:石油工业出版社,2000
[7]潘良云,孙星等.酒泉盆地窟窿山构造带结构特征与油气勘探方向.石油地球物理勘探,2007,39(2):222～227Pan Liang-yun,Sun Xing et al.Structural feature andoil/gas accumulation rule in Kulongshan mountain ofJiuquan basin.OGP,2007,39(2):222～227
[8]夏义平,徐礼贵,刘万辉等.地震解释及综合研究中几个问题的探讨.石油地球物理勘探,2005,40(增刊):1～5
[9]陈发景等.调节带(或传递带)的基本概念和分类.现代地质,2003,17(2):186～191
[10]苏培东,秦启荣等.储层裂缝预测研究现状与展望.西南石油学院学报,2005,27(5):14～17Su Pei-dong,Qin Qi-rong et al.Propects and statusfor the study on reservoir fractures.Journal ofSouthwest Petroleum Institute,2005,27(5):14～17
[11]方晨,曾利刚,由成才等.裂缝综合预测方法及应用研究.天然气工业,2007,27(增A):443～445
[2]王允诚.油气储层评价.北京:石油工业出版社,1999
[3]吴辉,谭修中,孙万高等.窟窿山油藏下沟组裂缝型储集层测井评价.新疆石油地质,2004,25(3):274～276Wu Hui,Tan Xiu-zhong,Sun Wan-gao et al.Welllog evaluation of fractured reservoir of Xiagou forma-tion in Kulongshan reservoir.Xinjiang PetroleumGeology,2004,25(3):274～276
[4]周晓峰,赵应成,王崇孝等.青西油田裂缝性油藏研究.新疆地质,2006,24(1):40～44Zhou Xiao-feng,Zhao Ying-cheng,Wang Chong-xiaoet al.Research of the fracture reservoirs in Qingxioilfield.Xinjiang Geology,2006,24(1):40～44
[5]赵贤正,夏义平,潘良云,谢结来.酒泉盆地南缘山前冲断带构造特征与油气勘探方向.石油地球物理勘探,2004,39(2):222～227Zhao Xian-zheng,Xia Yi-ping,Pan Liang-yun andXie Jie-lai.Structural character of foreland thrust beltof Jiuquan basin south margin and oil/gas explorationdirection.OGP,2004,39(2):222～227
[6]贾承造,何登发,雷振宇等.前陆冲断带油气勘探.北京:石油工业出版社,2000
[7]潘良云,孙星等.酒泉盆地窟窿山构造带结构特征与油气勘探方向.石油地球物理勘探,2007,39(2):222～227Pan Liang-yun,Sun Xing et al.Structural feature andoil/gas accumulation rule in Kulongshan mountain ofJiuquan basin.OGP,2007,39(2):222～227
[8]夏义平,徐礼贵,刘万辉等.地震解释及综合研究中几个问题的探讨.石油地球物理勘探,2005,40(增刊):1～5
[9]陈发景等.调节带(或传递带)的基本概念和分类.现代地质,2003,17(2):186～191
[10]苏培东,秦启荣等.储层裂缝预测研究现状与展望.西南石油学院学报,2005,27(5):14～17Su Pei-dong,Qin Qi-rong et al.Propects and statusfor the study on reservoir fractures.Journal ofSouthwest Petroleum Institute,2005,27(5):14～17
[11]方晨,曾利刚,由成才等.裂缝综合预测方法及应用研究.天然气工业,2007,27(增A):443～445
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心