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基于层序约束的储层预测——以建南地区长兴组生屑滩储层为例
Reservoir prediction based on sequence constraint: a case study on bioclastic shoal reservoir of Changxing Formation, Jiannan area
伍 宁 南
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作者单位:中国石化江汉油田公司勘探开发研究院
中文关键字:生屑滩 层序地层划分 Ⅳ级层序 储层预测 晚二叠世 四川盆地东缘
英文关键字:Bioclastic shoal; Sequence stratigraphic classification; Fourth-order sequence; Reservoir prediction; Late Permian; Eastern margin of Sichuan Basin
中文摘要:四川盆地东缘建南地区上二叠统长兴组是该区的重要产气层系,其生屑滩储层具有厚度薄、非均质性强的特点,对
储层分布规律认识不清,一直制约着该区块滩相储层的高效开发。为了给气藏开发提供充足的钻探依据,结合研究区钻井、测录井、
地震及分析化验资料,通过开展层序地层精细划分,建立了长兴组区域等时地层格架,并划分为4 个Ⅳ级层序;在等时地层格架
的控制下,通过对长兴组生屑滩储层的精细标定,明确了储层地震响应特征;运用地震多属性分析、波阻抗反演等手段,进一步
开展地震储层精细预测。研究结果表明:储层纵向上主要分布在长兴组Ⅳ级层序的SSQ2 中,平面上主要分布在研究区台地边缘
J43 井区及JZ1 井区。

DOI: 10.12055/gaskk.issn.1673-3177.2018.01.006

 

英文摘要:In Jiannan area, eastern margin of Sichuan Basin, the Upper Permian Changxing Formation is an important gas-producing
stratum, and its bioclastic shoal reservoir is characterized by small thickness and strong heterogeneity. However, the reservoir distribution
is still unclear, hindering the efficient development of beach facies reservoirs. In this paper, the regional isochronous stratigraphic
framework of Changxing Formation was established and divided into 4 fourth-order sequences based on some data of drilling, testing,
logging, seismic, and experiments after sequence stratigraphy was divided precisely. Under this framework, the seismic response characteristics
of Changxing reservoir were clearly defined through fine calibration. Finally, seismic-based fine reservoir prediction was
carried out by means of seismic multi-attribute analysis and wave impedance inversion. It is indicated that the reservoir is vertically
distributed in SSQ2, a fourth-order sequence of Changxing Formation, and laterally located in J43 and JZ1 well blocks at the platform
margin of the study area.
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国内统一连续出版物号:CN51-1159/TE |国内发行代码: |国际标准出版物号:ISSN1673-3177 |国际发行代码:
主管单位:中国石油西南油气田公司  主办单位:中国石油西南油气田公司勘探开发研究院
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