基于储层地质知识库的井震结合河道刻画方法——以松辽盆地北部F地区葡萄花油层组为例
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摘要
针对探评区小层级河道微相不能准确刻画的难题,提出了"区块精细解剖建知识库,知识库参数约束井震结合"的河道微相精细刻画方法。以松辽盆地北部F地区葡萄花油层组为例,对区内密井网开发区小层级沉积微相进行解剖,并统计河道微相的宽度、厚度、延伸方向、分叉角等参数,建立储层定量地质知识库。在精细地质研究的基础上,利用地震沉积学的地层切片技术提取地震属性,建立地震属性与井点砂岩厚度的关系,用以预测探评区的砂岩厚度。最后,综合运用地质知识库参数和预测的砂岩厚度对平面沉积微相进行刻画,指导了探评区井位的成功部署,为探评区深入应用井-震资料进行沉积微相精细刻画提供了一种新思路,可在类似区块推广应用。
In order to solve the problem of channel microfacies accurate description in the exploration assessment areas,a new method for small block description was proposed for establishing a reservoir geological knowledge database and accurate description of sedimentary microfacies by using the combination of well and seismic data under the constraint of knowledge database.By taking Putaohua Reservoir of F Area in the northern Songliao Basin for example,the sedimentary microfacies in the area was analyzed and the channel microfacies,thickness,width of the extension direction,bifurcation angle data of dense well pattern were statistically studied to establish a quantitative reservoir geological knowledge database.On the basis of fine geology research,seismic attributes were extracted by using the strata slice technology of the seismic sedimentology,and the statistical relationship between the seismic attributes and sandstone thickness in wells was established to predict the thickness of sandstone in the exploration assessment areas.The parameters in the geological knowledge database and the predicted sandstone thickness are comprehensively used to describe the plane sedimentary microfacies and successfully guide arrangement of well locations in the exploration area,it provides an idea for accurate description of sedimentary microfacies by using the combination of well and seismic data in the area,the technology can be popularized in the similar areas.
In order to solve the problem of channel microfacies accurate description in the exploration assessment areas,a new method for small block description was proposed for establishing a reservoir geological knowledge database and accurate description of sedimentary microfacies by using the combination of well and seismic data under the constraint of knowledge database.By taking Putaohua Reservoir of F Area in the northern Songliao Basin for example,the sedimentary microfacies in the area was analyzed and the channel microfacies,thickness,width of the extension direction,bifurcation angle data of dense well pattern were statistically studied to establish a quantitative reservoir geological knowledge database.On the basis of fine geology research,seismic attributes were extracted by using the strata slice technology of the seismic sedimentology,and the statistical relationship between the seismic attributes and sandstone thickness in wells was established to predict the thickness of sandstone in the exploration assessment areas.The parameters in the geological knowledge database and the predicted sandstone thickness are comprehensively used to describe the plane sedimentary microfacies and successfully guide arrangement of well locations in the exploration area,it provides an idea for accurate description of sedimentary microfacies by using the combination of well and seismic data in the area,the technology can be popularized in the similar areas.
引文
[1]蔡东梅.松辽盆地扶余油田泉四段沉积微相研究[J].岩性油气藏,2014,26(5):57~63.
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[12]刘媛,朱筱敏,袁红旗,等.三肇凹陷白垩系姚一段葡萄花油层浅水三角洲高分辨率层序地层新认识[J].中国石油大学学报(自然科学版),2010,34(4):7~12.
[13]付宪弟,王胜男,张亮,等.松辽盆地榆树林-肇州地区葡萄花油层沉积相类型及沉积演化特征[J].岩性油气藏,2013,25(2):26~30.
[14]魏然,李红阳,于斌,等.沉积盆地物源体系分析方法及研究进展[J].岩性油气藏,2013,25(3):53~57.
[15]赵翰卿,付志国,吕晓光,等.大型河流—三角洲沉积储层精细描述方法[J].石油学报,2000,21(4):109~113.
[16]季秉玉,赵国忠,李洁.多学科集成化油藏研究方法与应用[M].北京:石油工业出版社,2009:1~20.
[17]李操.基于优势振幅的储层预测方法研究及应用[J].石油天然气学报(江汉石油学院学报),2014,36(7):80~83.
[18]郝兰英,郭亚杰,李杰,等.地震沉积学在大庆长垣密井网条件下储层精细描述中的初步应用[J].地学前缘,2012,19(3):81~86.
[2]于兴河.碎屑岩系油气储层沉积学[M].北京:石油工业出版社,2009:5~62.
[3]刘宝国,陈珊.三相融合沉积微相分析方法[J].岩性油气藏,2014,26(3):17~21.
[4]陈彬滔,于兴河,杨丽莎,等.勘探评价早期阶段沉积微相研究方法探讨——以东濮凹陷前梨园南地区为例[J].石油天然气学报(江汉石油学院学报),2011,33(8):21~26.
[5]刘麟,阳芳.地震属性在勘探阶段中的应用[J].石油物探,2004,43(S1):34~39.
[6]陈婷婷,胡望水,李相明,等.从密井网区到探评井区沉积微相平面图的编制[J].断块油气田,2014,21(5):545~549.
[7]Ryseth A,Fjellbirkeland H,Osmundsen I K,et al.High-resolution stratigraphy and seismic attribute mapping of a fluvial reservoir:Middle Jurassic Ness Formotion,Oseberg Field[J].AAPG Bulletin,1998,82(9):1627~1651.
[8]Satter N,Khan F A,Farid A,et al.Presenting seismic stratigraphy and attribute analysis as pioneer techniques for delineation of reservoir quality sand bodies in the Indus Offshore Basin,southwest Pakistan[J].The Leading Edge,2010,29(5):524~529.
[9]Wood L J,Pecuch D,Schulein B,et al.Seismic attribute and sequence stratrigraphic integration methods for resolving reservoir geometry in San Jorge Basin,Argentina[J].The Leading Edge,2000,19(9):952~962.
[10]王建功,王天琦,卫平生,等.大型坳陷湖盆浅水三角洲沉积模式——以松辽盆地北部葡萄花油层为例[J].岩性油气藏,2007,19(2):28~34.
[11]付宪弟.尚家地区葡萄花油层沉积微相特征及其控油规律[J].油气藏评价与开发,2014,7(3):18~22.
[12]刘媛,朱筱敏,袁红旗,等.三肇凹陷白垩系姚一段葡萄花油层浅水三角洲高分辨率层序地层新认识[J].中国石油大学学报(自然科学版),2010,34(4):7~12.
[13]付宪弟,王胜男,张亮,等.松辽盆地榆树林-肇州地区葡萄花油层沉积相类型及沉积演化特征[J].岩性油气藏,2013,25(2):26~30.
[14]魏然,李红阳,于斌,等.沉积盆地物源体系分析方法及研究进展[J].岩性油气藏,2013,25(3):53~57.
[15]赵翰卿,付志国,吕晓光,等.大型河流—三角洲沉积储层精细描述方法[J].石油学报,2000,21(4):109~113.
[16]季秉玉,赵国忠,李洁.多学科集成化油藏研究方法与应用[M].北京:石油工业出版社,2009:1~20.
[17]李操.基于优势振幅的储层预测方法研究及应用[J].石油天然气学报(江汉石油学院学报),2014,36(7):80~83.
[18]郝兰英,郭亚杰,李杰,等.地震沉积学在大庆长垣密井网条件下储层精细描述中的初步应用[J].地学前缘,2012,19(3):81~86.