川东地区南门场构造中段构造特征分析
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摘要
四川盆地东部南门场构造具有川东高陡构造的普遍特征,地面地质条件恶劣,地腹构造相当复杂,地震剖面在构造顶部成像困难。因对其构造主体部位构造特征认识模糊,导致勘探进展缓慢。现利用构造中段主体部位两口钻井的录井、测井资料,对门2井地层层序重新进行了划分。在此基础上,结合地层倾角、井斜数据及邻区钻井的对比资料,以地震剖面为背景,尽可能精确地恢复了门2井区的地腹构造形态;这一构造模式较为接近钻井实际情况,可对下一步的勘探部署提供新的参考。
Nanmenchang structure in East Sichuan Basin is of the common characteristics of the high-steep structures in the basin, the surface geological conditions being worse, the subsurface structural conditions being complicated and the structural crest imaging by seismic data being difficult. The progress in gas exploration in the structure is slow because of some confused ideas about the structural characteristics at the main portion of the structure. Through redividing the stratigraphic sequence in well Men-2 by applying the logging and log data of two wells at the main portion in the middle section of the structure, the subsurface structural shape of well Men-2 area was recovered accurately as far as possible on the basis of seismic sections in combination with the data on stratigraphic dip and hole deviation and the adjacent drilling data. Such a structural pattern is relatively close to the actual situation of drilling, thus providing a new basis for the next exploration deployment.
Nanmenchang structure in East Sichuan Basin is of the common characteristics of the high-steep structures in the basin, the surface geological conditions being worse, the subsurface structural conditions being complicated and the structural crest imaging by seismic data being difficult. The progress in gas exploration in the structure is slow because of some confused ideas about the structural characteristics at the main portion of the structure. Through redividing the stratigraphic sequence in well Men-2 by applying the logging and log data of two wells at the main portion in the middle section of the structure, the subsurface structural shape of well Men-2 area was recovered accurately as far as possible on the basis of seismic sections in combination with the data on stratigraphic dip and hole deviation and the adjacent drilling data. Such a structural pattern is relatively close to the actual situation of drilling, thus providing a new basis for the next exploration deployment.
引文
[1]江志云等,川东地区南门场构造南段地震详查总结报告,2003;
[2]江志云等,川东地区南门场构造北段地震详查总结报告,2004;
[3]路中侃等,川东地区高陡构造带天然气富集规律研究,1995;
[4]陈光和,门二井完井地质总结报告,1981;
[5]刘翼,门8井综合录井总结报告,2003。
1 李亚林等.川东南门场高陡构造的地震成像技术试验研究.天然气工业,2004;24(4):19~21
[2]江志云等,川东地区南门场构造北段地震详查总结报告,2004;
[3]路中侃等,川东地区高陡构造带天然气富集规律研究,1995;
[4]陈光和,门二井完井地质总结报告,1981;
[5]刘翼,门8井综合录井总结报告,2003。
1 李亚林等.川东南门场高陡构造的地震成像技术试验研究.天然气工业,2004;24(4):19~21
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