川西地区须二段致密砂岩储层裂缝特征及识别
摘要
探讨致密砂岩储层裂缝的识别,为川西须二天然气的勘探开发提供部署靶点。通过对川西须二段致密砂岩储层及裂缝进行地质、实验、测井、3D3C地震资料的在点、线、面上的综合研究,结果表明须二储层宏观与微观裂缝都发育,且发育网状缝与高角度缝。裂缝占总孔隙度平均为9.33%,而裂缝发育对渗透率的增加是不发育裂缝致密储层的21.6倍。在点、线、面的综合研究方法对致密砂岩储层裂缝的刻画与识别的基础上,编制了川西孝新地区须二段裂缝发育分布图。
The gas exploration and development of the tight sandstone reservoir are affected by fractures and the reservoir of Member 2 of Upper Triassic Xujiahe Formation(T3x2) belongs to the tight sandstone reservoir in West Sichuan with poor porosity and permeability.The fractures control the exploration and development results of the reservoir,so the research of the fractures in the tight sandstone reservoir is the key to exploration and development.This paper first researches the fractures of core with geological description,3-D CT scan,full-diameter core in T3x2,and forms the exact point on the characterization.Secondly it makes fracture identification by analyzing the reservoir section of conventional logging response characteristics of different types of fractures,using imaging logging,and 3-D finite element method of laterolog.At last,it uses multi-wave splitting technique to research and identify the distribution of the fractures in plane with 3-D 3C seismic data.This forms the research methods series of identifying fractures with point,line,and surface and the fracture system of geological reserves can be also calculated.The methods not only offer the exact targets in the tight sandstone reservoir gas exploration,but also the effective guidance of evaluation and development of reserves.
The gas exploration and development of the tight sandstone reservoir are affected by fractures and the reservoir of Member 2 of Upper Triassic Xujiahe Formation(T3x2) belongs to the tight sandstone reservoir in West Sichuan with poor porosity and permeability.The fractures control the exploration and development results of the reservoir,so the research of the fractures in the tight sandstone reservoir is the key to exploration and development.This paper first researches the fractures of core with geological description,3-D CT scan,full-diameter core in T3x2,and forms the exact point on the characterization.Secondly it makes fracture identification by analyzing the reservoir section of conventional logging response characteristics of different types of fractures,using imaging logging,and 3-D finite element method of laterolog.At last,it uses multi-wave splitting technique to research and identify the distribution of the fractures in plane with 3-D 3C seismic data.This forms the research methods series of identifying fractures with point,line,and surface and the fracture system of geological reserves can be also calculated.The methods not only offer the exact targets in the tight sandstone reservoir gas exploration,but also the effective guidance of evaluation and development of reserves.
引文
[1]王亮国,唐立章,邓莉,等.致密储层物性下限研究[J].钻采工艺,2011,34(6):33-36.
[2]蔡希源.深层致密砂岩气藏天然气富集规律与勘探关键技术以四川盆地川西拗陷须家河组天然气勘探为例[J].石油与天然气地质,2010,31(6):707-714.
[3]苏锦义.新场气田须家河组二段裂缝-孔隙性储层综合预测[D].成都:成都理工大学档案馆,2008.
[4]王思权.川西XC构造须家河组测井储层综合评价研究[D].成都:成都理工大学档案馆,2009.
[5]施伟军,陈荣林.一种研究油气储层裂缝的新方法计算机层析(CT)法[J].石油实验地质,2001,23(3):344-347.
[6]秦启荣,黄平辉,周远志,等.全直径样品分析在测井解释裂缝孔隙度中的应用研究以克拉玛依油田百31井区二叠系油藏为例[J].天然气地球科学,2005,16(5):637-640.
[7]吴文圣,陈刚花,雍世和,等.利用双侧向测井方法判别裂缝的有效性[J].石油大学学报:自然科学版,2001,25(1):87-89.
[8]蒲静,秦启荣.油气储层裂缝预测方法综述[J].特种油气藏,2008,15(3):9-13.
[9]段文燊,吴朝容,石磊,等.川西须二段测录井特征与测试选层研究[J].石油天然气学报,2011,33(6):86-91.
[10]刘金华.油气储层裂缝形成、分布及有效性研究[D].东营:中国石油大学(华东)档案馆,2009.
[11]刘红爱.转换横波分裂分析及校正技术研究[D].成都:成都理工大学档案馆,2011.
[12]张虹.3D3C技术在川西裂缝性储层预测中的应用[J].天然气勘探与开发,2008,31(4):13-16.
[13]叶泰然.川西拗陷合兴场—罗江地区上三叠统须家河组二段致密裂缝性砂岩储层预测[D].成都:成都理工大学档案馆,2003.
[2]蔡希源.深层致密砂岩气藏天然气富集规律与勘探关键技术以四川盆地川西拗陷须家河组天然气勘探为例[J].石油与天然气地质,2010,31(6):707-714.
[3]苏锦义.新场气田须家河组二段裂缝-孔隙性储层综合预测[D].成都:成都理工大学档案馆,2008.
[4]王思权.川西XC构造须家河组测井储层综合评价研究[D].成都:成都理工大学档案馆,2009.
[5]施伟军,陈荣林.一种研究油气储层裂缝的新方法计算机层析(CT)法[J].石油实验地质,2001,23(3):344-347.
[6]秦启荣,黄平辉,周远志,等.全直径样品分析在测井解释裂缝孔隙度中的应用研究以克拉玛依油田百31井区二叠系油藏为例[J].天然气地球科学,2005,16(5):637-640.
[7]吴文圣,陈刚花,雍世和,等.利用双侧向测井方法判别裂缝的有效性[J].石油大学学报:自然科学版,2001,25(1):87-89.
[8]蒲静,秦启荣.油气储层裂缝预测方法综述[J].特种油气藏,2008,15(3):9-13.
[9]段文燊,吴朝容,石磊,等.川西须二段测录井特征与测试选层研究[J].石油天然气学报,2011,33(6):86-91.
[10]刘金华.油气储层裂缝形成、分布及有效性研究[D].东营:中国石油大学(华东)档案馆,2009.
[11]刘红爱.转换横波分裂分析及校正技术研究[D].成都:成都理工大学档案馆,2011.
[12]张虹.3D3C技术在川西裂缝性储层预测中的应用[J].天然气勘探与开发,2008,31(4):13-16.
[13]叶泰然.川西拗陷合兴场—罗江地区上三叠统须家河组二段致密裂缝性砂岩储层预测[D].成都:成都理工大学档案馆,2003.
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