|本期目录/Table of Contents|

[1]管 耀 冯 进 刘君毅 高楚桥 王清辉 李兆平 石 磊 潘卫国.低对比度砂岩油层岩石组分核磁与常规测井联合反演方法[J].中国海上油气,2020,32(04):71-77.[doi:10.11935/j.issn.1673-1506.2020.04.008]
 GUAN Yao FENG Jin LIU Junyi GAO Chuqiao WANG QinghuiLI Zhaoping SHI Lei PAN Weiguo.Joint inversion method of nuclear magnetic resonance and conventional logging for the rock components of low-contrast sandstone reservoirs[J].China Offshore Oil and Gas,2020,32(04):71-77.[doi:10.11935/j.issn.1673-1506.2020.04.008]
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低对比度砂岩油层岩石组分核磁与常规测井联合反演方法()

《中国海上油气》[ISSN:1673-1506/CN:11-5339/TE]

卷:
第32卷
期数:
2020年04期
页码:
71-77
栏目:
油气勘探(南海东部海域勘探成果专辑)
出版日期:
2020-07-25

文章信息/Info

Title:
Joint inversion method of nuclear magnetic resonance and conventional logging for the rock components of low-contrast sandstone reservoirs
文章编号:
1673-1506(2020)04-0071-07
作者:
管 耀1 冯 进1 刘君毅1 高楚桥2 王清辉1 李兆平2 石 磊1 潘卫国1
(1.中海石油(中国)有限公司深圳分公司 广东深圳 518054; 2.长江大学 湖北武汉 430100)
Author(s):
GUAN Yao1 FENG Jin1 LIU Junyi1 GAO Chuqiao2 WANG Qinghui1LI Zhaoping2 SHI Lei1 PAN Weiguo1
(1. CNOOC China Limited,Shenzhen Branch,Shenzhen, Guangdong 518054,China; 2. Yangtze University,Wuhan,Hubei 430100,China)
关键词:
低对比度砂岩油层 核磁测井 联合反演 “大孔率”曲线 最优化测井解释 恩平地区
Keywords:
low-contrast sandstone reservoir NMR logging joint inversion “large porosity” curve optimized logging interpretation Enping area
分类号:
TE132.1+4
DOI:
10.11935/j.issn.1673-1506.2020.04.008
文献标志码:
A
摘要:
南海东部恩平地区浅层分布大量低对比度油层,其颗粒组分以极细砂为主,细粒组分对放射性的高吸附导致这类油层自然伽马高,常规测井特征与泥岩对比度低。本文利用泥岩和低对比度砂岩在核磁测井上的明显差异,从核磁测井T2谱中提取出 “大孔率”曲线,认为“大孔率”是地层不同粒级砂岩储集空间的综合响应,可表征地层的岩石粒级组分,并进一步推导出“大孔率”的测井响应方程,联合常规测井响应方程共同构建最优测井解释目标函数,对地层岩性进行联合反演,从而获得准确的极细砂组分含量。该方法已在恩平地区浅层得到广泛应用,识别出大量低对比度油层,取得了较好的增储效果
Abstract:
The resolution of existing conventional seismic data in Huizhou A block is low, which makes it difficult to determine the contact relationship of thin sand bodies in the target layer, and identify the boundary of lithologic traps. Besides, the image of small faults is not clear, making it hard to meet the exploration needs. So a high-density 3D seismic acquisition test is carried out in this block, and it is also the first trial of its kind in eastern South China Sea. Compared with the conventional seismic acquisition, the cable spacing of the high-density acquisition scheme is reduced to 50 m, the sinking depth of the source line is as shallow as 5 m, and the cable length is increased to 5 100 m. The acquisition direction is perpendicular to the sand body strike. By this way, the acquisition bin size is reduced, the coverage is improved and the seismic band is widened. The processing result shows that the resolution and imaging quality of high-density seismic data are greatly improved, and the imaging of faults and sand body strike is clear. The well-to-seismic calibration coincidence is higher. A well is drilled successfully according to the high-density seismic data, which proves that the prediction accuracy of structure and reservoir is higher. This technology promotes the exploration process of lithologic traps in this area and provides the idea and solution for litholigic trap exploration in the eastern South China Sea

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备注/Memo

备注/Memo:
收稿日期:2020-02-26 改回日期:2020-05-27*“十三五”国家科技重大专项“南海东部海域勘探新领域及关键技术(编号:2016ZX05024-004)”部分研究成果。第一作者简介: 管耀,男,工程师,从事测井解释方法研究工作。地址:广东省深圳市南山区后海滨路中海油大厦1705(邮编:518054)。E-mail:guanyao@cnooc.com.cn。
更新日期/Last Update: 2020-07-20