冷124-14-30井区储层预测与圈闭评价
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摘要
立足于地质、地震、测井等多学科互相配合 ,利用先进的技术软件 ,进行高精度合成地震记录制作、三维地震精细构造解释、地层层序划分对比、储层反演等综合地质研究 ,揭示了冷家油田冷 12 4 14 30井区储层及圈闭特征 :目的层层位为下第三系沙河街组三段 ,构造复杂 ,发育北东和北西两组断裂 ;发育陡坡型扇三角洲沉积体系 ,可划分为 6种沉积微相 ;储层平均孔隙度为 2 4.5 % ,渗透率 146 3× 10 -3 μm2 ,属于中高孔、高渗储层 ;油藏类型为岩性 构造油藏 ,油水分布受构造、沉积微相等多种因素控制 ,油气主要分布在构造高部位。通过综合评价 ,新发现 4个圈闭 ,部署滚动井 3口 ,增加石油地质储量 34 7× 10 4 t
Comprehensive geologic researches with multi disciplinaries, such as geology, seismic and logging, are performed in combination with advanced technological software, in which high resolution seismic record synthesis, 3D fine structure interpretation, formation sequence delineation as well as reservoir inversion are involved. The results show reservoir and trap features of Leng 124 14 30 well area are as follows: 1) target zones lie in Late Tertiary Sha3 formations with complex structures and two sets of faults developed in east north and west north; 2) steep slope fan delta sedimentary system developed in Sha3 era can be divided into 6 sub facies; 3) the reservoirs are litholgic ones and belong to mid to high porous and high permeable type with average porosity at 24.5% and permeability at 1 463×10\+\{-3\}μm\+2; 4) oil and gas mainly distribute at structural high points and controlled by structure, sedimentary micro facies and various other factors. Finally, 4 additional traps are defined through comprehensive evaluation and 3 exploration wells drilled progressively with increased oil reserves of 347×10\+4 t.
Comprehensive geologic researches with multi disciplinaries, such as geology, seismic and logging, are performed in combination with advanced technological software, in which high resolution seismic record synthesis, 3D fine structure interpretation, formation sequence delineation as well as reservoir inversion are involved. The results show reservoir and trap features of Leng 124 14 30 well area are as follows: 1) target zones lie in Late Tertiary Sha3 formations with complex structures and two sets of faults developed in east north and west north; 2) steep slope fan delta sedimentary system developed in Sha3 era can be divided into 6 sub facies; 3) the reservoirs are litholgic ones and belong to mid to high porous and high permeable type with average porosity at 24.5% and permeability at 1 463×10\+\{-3\}μm\+2; 4) oil and gas mainly distribute at structural high points and controlled by structure, sedimentary micro facies and various other factors. Finally, 4 additional traps are defined through comprehensive evaluation and 3 exploration wells drilled progressively with increased oil reserves of 347×10\+4 t.
引文
[1]张宗命 ,等 中国石油大地构造 [M ] 北京 :石油工业出版社 ,1982
[2 ]裘怿楠 ,陈子琪 油藏描述 [M ] 北京 :石油工业出版社 ,1996
[3]华东石油学院 沉积岩石学 [M] 北京 :石油工业出版社 ,1982
[4 ]刘雯林 油气田开发地震技术 [M ] 北京 :石油工业出版社 ,1996
[5 ]张厚福 ,张万选 石油地质学 [M ] 北京 :石油工业出版社 ,1989
[2 ]裘怿楠 ,陈子琪 油藏描述 [M ] 北京 :石油工业出版社 ,1996
[3]华东石油学院 沉积岩石学 [M] 北京 :石油工业出版社 ,1982
[4 ]刘雯林 油气田开发地震技术 [M ] 北京 :石油工业出版社 ,1996
[5 ]张厚福 ,张万选 石油地质学 [M ] 北京 :石油工业出版社 ,1989
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