高精度层序地层学在隐蔽油藏预测中的应用
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摘要
针对泌阳凹陷地层沉积特点,以高精度地震资料、钻井和测井资料为基础,采用高精度层序地层学方法,通过对不整合面的识别和追踪,建立了泌阳凹陷重点勘探层段下第三系沉积的区域等时地层格架,划分出一级层序界面3个、二级层序界面3个、三级层序界面7个。在三级层序界面控制下,利用露头剖面和具代表性的钻井资料进行了层序地层和沉积相研究;结合过井高分辨率三维地震剖面,对凹陷中的各井进行了高精度层序地层和沉积相的划分和对比;在单井短期旋回叠加样式的基础上,对中期基准面旋回层序进行了等时对比,建立了高分辨率层序地层格架。在分析层序格架内储层发育规律的基础上,预测了隐蔽油藏的有利勘探区带,并利用地震属性分析技术和地震反演技术对砂砾岩扇体及其分布的边界进行了描述。根据预测结果部署的探井试采均获得了工业油流,新增石油控制储量1092×10~4t。
Aiming at the sedimentary characteristics of Biyang depres- sion,based on the high-resolution seismic data,drilling and logging data,high-resolution sequence stratigraphy was utilized to identify and correlate the unconformity.Areal sequence stratigraphic framework of Biyang depression was built,and the sequence boundaries were divided,including three first-grades,three second- grades and seven third-grades.Under the control of three-grade se- quence boundary,outcrop section and logging data were used to study the formations and sedimentary faceis.Combined with high- resolution seismic sections,the high-resolution sequence stratigra- phy and sedimentary facies were divided and correlated.On the ba- sis of single well analysis,the sequence cycles of middle term base level were correlated and the stratigraphic framework was built. Based on the analysis of reservoir development laws in sequences, the favorable area of subtle oil pools was predicted.In addition, seismic attributes analysis and inversion were used to describe the distri- bution of the glutenite body of steep slope zone.All the prospecting wells deployed according to the prediction results have got industrial oil flow,and the increasing controlled reserve reaches 1092×10~4t.
Aiming at the sedimentary characteristics of Biyang depres- sion,based on the high-resolution seismic data,drilling and logging data,high-resolution sequence stratigraphy was utilized to identify and correlate the unconformity.Areal sequence stratigraphic framework of Biyang depression was built,and the sequence boundaries were divided,including three first-grades,three second- grades and seven third-grades.Under the control of three-grade se- quence boundary,outcrop section and logging data were used to study the formations and sedimentary faceis.Combined with high- resolution seismic sections,the high-resolution sequence stratigra- phy and sedimentary facies were divided and correlated.On the ba- sis of single well analysis,the sequence cycles of middle term base level were correlated and the stratigraphic framework was built. Based on the analysis of reservoir development laws in sequences, the favorable area of subtle oil pools was predicted.In addition, seismic attributes analysis and inversion were used to describe the distri- bution of the glutenite body of steep slope zone.All the prospecting wells deployed according to the prediction results have got industrial oil flow,and the increasing controlled reserve reaches 1092×10~4t.
引文
1秦伟军，张永华，全书进，精细构造解释与储层预测技术在泌阳中南部二次勘探中的应用[J]．石油物探，2004，43(1)：62～66
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6罗立民．河湖沉积体系三维高精度层序地层学研究[M]．北京：地质出版社，1977．17～63
7 Posamentier H W,Weimer P.Siliciclastic sequence stratigraphy and petroleum geology-where to from here [J].AAPG,1993,77(5):731～739
8赵俊青，夏斌，纪友亮等．湖相碳酸盐岩高精度层序地层学探析[J]．沉积学报，2005，23(4)：646～656
9孙永传，李惠生，邓新华等．断陷盐湖盆地的沉积体系及演化[J]．地球科学，1991，16(4)：419～428
10付志方，张本书．南阳凹陷层序地层学研究[J]．石油物探，2004，43(3)：283～286
11李忠，雷雪．川东石炭系黄龙组地层层序地层划分及储层特征分析[J]．石油物探，2005，44(1)：39～43
12胡受权，郭文平，邵荣松．南襄盆地泌阳凹陷第三纪湖泊演化探讨[J]．石油学报，2001，22(5)：23～28
13陈蓉，李勇，丘东洲．黄骅坳陷新近系馆陶组Ⅲ段辫状河相高分辨率层序分析[J]．沉积与特提斯地质，2006，26(3)：56～60
14项华，徐长贵．渤海海域古近系隐蔽油气藏层序地层学特征[J]．石油学报，2006，27(2)：11～15
2张永华，罗家群，田小敏．高精度三维地震在泌阳北部复杂断块群勘探中的应用[J]．石油物探，2005，44(3)：278～282
3杨道庆，邱荣华，赵追等．泌阳凹陷北坡下切谷一低位扇沉积体系及其油气勘探意义[J]．石油地球物理勘探，2002，37(5)：485～490
4邱荣华，孙耀华，张永华等．泌阳凹陷新庄地区浅层三维地震勘探[J]．石油与天然气地质，2005，26(2)：242～245
5付志方，王焕弟．层序地层学研究现状及进展[J]．勘探地球物理进展，2005，28(5)：320～324
6罗立民．河湖沉积体系三维高精度层序地层学研究[M]．北京：地质出版社，1977．17～63
7 Posamentier H W,Weimer P.Siliciclastic sequence stratigraphy and petroleum geology-where to from here [J].AAPG,1993,77(5):731～739
8赵俊青，夏斌，纪友亮等．湖相碳酸盐岩高精度层序地层学探析[J]．沉积学报，2005，23(4)：646～656
9孙永传，李惠生，邓新华等．断陷盐湖盆地的沉积体系及演化[J]．地球科学，1991，16(4)：419～428
10付志方，张本书．南阳凹陷层序地层学研究[J]．石油物探，2004，43(3)：283～286
11李忠，雷雪．川东石炭系黄龙组地层层序地层划分及储层特征分析[J]．石油物探，2005，44(1)：39～43
12胡受权，郭文平，邵荣松．南襄盆地泌阳凹陷第三纪湖泊演化探讨[J]．石油学报，2001，22(5)：23～28
13陈蓉，李勇，丘东洲．黄骅坳陷新近系馆陶组Ⅲ段辫状河相高分辨率层序分析[J]．沉积与特提斯地质，2006，26(3)：56～60
14项华，徐长贵．渤海海域古近系隐蔽油气藏层序地层学特征[J]．石油学报，2006，27(2)：11～15
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