川北阆中—南部地区大安寨段裂缝预测
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摘要
川北阆中—南部地区地质条件复杂,大安寨段储层薄且超致密,孔、洞、缝是油气的主要储渗空间,裂缝的发育程度是决定油气产能高低的主要因素。相邻井在同一套储层产能上差异极大,反映储集体具有强烈的非均质性,并主要受裂缝发育程度控制。裂缝发育程度的预测是寻找有效储集体的关键。该文利用岩石破裂接近程度、曲率法和地震道不连续性检测3种方法,综合岩心、测井、测试等资料进行裂缝预测,提高了前人仅在二维地震资料基础上所做相关工作的精度,并通过"权重"的大小来衡量裂缝的相对发育程度,对裂缝进行了定量化研究,为寻找有利的储层分布区块,最终进行井位部署提供了依据。
The geological condition in Langzhong-Nanbu area in northern Sichuan is complex.The reservoir of Daan-zhai member is thin and super tight with its pores,holes and fractures as main storage and permeation spaces.The development of the fractures is the main factors for controlling the reservoir productivity.The great differences in reservoir productivity among the adjacent wells in the same set of reservoir reflect that the reservoir heterogeneity is strong and it is mainly controlled by the development of fractures.Based on core,logging and oil testing,the method of rock fracturing approximation degree,curvature method and seismic trace discontinuity detection method are used to predict the fractures,and the accuracy of fracture prediction which is depended on the 2D seismic data is well enhanced.The quantitative study by using the weight value to judge the fracture development is carried out,which provides basis for seeking the favorable reservoir and deploying drilling site.
The geological condition in Langzhong-Nanbu area in northern Sichuan is complex.The reservoir of Daan-zhai member is thin and super tight with its pores,holes and fractures as main storage and permeation spaces.The development of the fractures is the main factors for controlling the reservoir productivity.The great differences in reservoir productivity among the adjacent wells in the same set of reservoir reflect that the reservoir heterogeneity is strong and it is mainly controlled by the development of fractures.Based on core,logging and oil testing,the method of rock fracturing approximation degree,curvature method and seismic trace discontinuity detection method are used to predict the fractures,and the accuracy of fracture prediction which is depended on the 2D seismic data is well enhanced.The quantitative study by using the weight value to judge the fracture development is carried out,which provides basis for seeking the favorable reservoir and deploying drilling site.
引文
[1]杨志彬,何祖荣,杨先利,等.川北阆中—南部地区大安寨段油气藏储层酸压改造技术及实践[J].中外能源,2010,15(5):50-52.
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[3]邓康龄.四川盆地柏垭—石龙场地区自流井组大安寨段油气成藏地质条件[J].油气地质与采收率,2001,8(2):9-13.
[4]李虎,秦启荣,王志萍,等.大邑构造须二段储层裂缝预测[J].岩性油气藏,2010,22(2):107-115.
[5]王国刚,苏培东,秦启荣.罗家寨构造嘉陵江组嘉四2段底部裂缝预测[J].岩性油气藏,2009,21(4):82-86.
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[7]郑荣才,刘文均,李安仁.川北下侏罗统自流井组大安寨段灰岩非常规储层包裹体研究[J].地质评论,1997,43(5):515-523.
[8]胡宗全,童孝华,王允诚.川中大安寨段灰岩裂缝分形特征及孔隙结构模型[J].成都理工学院学报,1999,26(1):31-33.
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[10]袁云峰,才业,樊佐春,等.准噶尔盆地红车断裂带石炭系火山岩储层裂缝特征[J].岩性油气藏,2011,23(1):47-51.
[11]张娟,周文,邓虎成,等.麻黄山地区延安组、延长组储层裂缝特征及识别[J].岩性油气藏,2009,21(4):53-57.
[12]王崇孝,田多文,魏军.酒泉盆地窟窿山油藏裂缝分布特征[J].岩性油气藏,2008,20(4):20-25.
[13]李志勇,曾佐勋,罗文强.褶皱构造的曲率分析及其裂缝估算——以江汉盆地王场褶皱为例[J].吉林大学学报:地球科学版,2004,34(4):517-521.
[14]刘宏,蔡正旗,谭秀成,等.川东高陡构造薄层碳酸盐岩裂缝性储集层预测[J].石油勘探与开发,2008,35(4):431-436.
[15]许红梅.薄层灰岩的油气富集区预测方法初探——以川北大安寨段为例[J].石油地球物理勘探,2004,37(1):77-84.
[16]孙炜,王彦春,李梅,等.利用叠前地震数据预测火山岩储层裂缝[J].物探与化探,2010,34(2):229-232.
[17]张志让,王兆峰,张梅华,等.利用三维叠前地震资料预测火成岩储层裂缝分布[J].石油地球物理勘探,2010,45(1):92-98.
[18]赵辉,司马立强,颜其彬,等.川中大安寨段裂缝评价及储层产能预测方法[J].测井技术,2008,32(3):277-280.
[2]黎从军.川北柏垭地区大安寨一亚段储渗体特征及油气分布[J].石油与天然气地质,2002,23(1):81-83.
[3]邓康龄.四川盆地柏垭—石龙场地区自流井组大安寨段油气成藏地质条件[J].油气地质与采收率,2001,8(2):9-13.
[4]李虎,秦启荣,王志萍,等.大邑构造须二段储层裂缝预测[J].岩性油气藏,2010,22(2):107-115.
[5]王国刚,苏培东,秦启荣.罗家寨构造嘉陵江组嘉四2段底部裂缝预测[J].岩性油气藏,2009,21(4):82-86.
[6]操成杰,周新桂,舒能益,等.川北阆中地区大安寨段构造应力场与油气成藏预测[J].地质力学学报,2004,10(2):179-187.
[7]郑荣才,刘文均,李安仁.川北下侏罗统自流井组大安寨段灰岩非常规储层包裹体研究[J].地质评论,1997,43(5):515-523.
[8]胡宗全,童孝华,王允诚.川中大安寨段灰岩裂缝分形特征及孔隙结构模型[J].成都理工学院学报,1999,26(1):31-33.
[9]秦启荣,颜其彬,胡明.川中油气区东缘大安寨组储层裂缝成因模式初探[J].天然气工业,1998,18(3):90-91.
[10]袁云峰,才业,樊佐春,等.准噶尔盆地红车断裂带石炭系火山岩储层裂缝特征[J].岩性油气藏,2011,23(1):47-51.
[11]张娟,周文,邓虎成,等.麻黄山地区延安组、延长组储层裂缝特征及识别[J].岩性油气藏,2009,21(4):53-57.
[12]王崇孝,田多文,魏军.酒泉盆地窟窿山油藏裂缝分布特征[J].岩性油气藏,2008,20(4):20-25.
[13]李志勇,曾佐勋,罗文强.褶皱构造的曲率分析及其裂缝估算——以江汉盆地王场褶皱为例[J].吉林大学学报:地球科学版,2004,34(4):517-521.
[14]刘宏,蔡正旗,谭秀成,等.川东高陡构造薄层碳酸盐岩裂缝性储集层预测[J].石油勘探与开发,2008,35(4):431-436.
[15]许红梅.薄层灰岩的油气富集区预测方法初探——以川北大安寨段为例[J].石油地球物理勘探,2004,37(1):77-84.
[16]孙炜,王彦春,李梅,等.利用叠前地震数据预测火山岩储层裂缝[J].物探与化探,2010,34(2):229-232.
[17]张志让,王兆峰,张梅华,等.利用三维叠前地震资料预测火成岩储层裂缝分布[J].石油地球物理勘探,2010,45(1):92-98.
[18]赵辉,司马立强,颜其彬,等.川中大安寨段裂缝评价及储层产能预测方法[J].测井技术,2008,32(3):277-280.
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