OCCURRENCE CHARACTERISTICS AND SIGNIFICANCE OF CARBONIFEROUS AND PERMIAN IN THE SHENGLI OIL FIELD, THE BOHAI BAY BASIN
-
摘要: 渤海湾盆地济阳坳陷及临清坳陷东部地区(胜利油区)石炭—二叠系经过印支—燕山期的多期挤压以及喜山期的以拉张为主的构造作用后,形成了东西分带分块、南北分带的赋存状况。其中,印支—燕山期挤压抬升北东强、南西弱;喜山期拉张则南东大、北西小,由此造成了大小不等、形态各异、埋深不同的"断块体"。表现为北东断块体碎、小,而南西断块体相对大而成片。此外,2期构造运动的叠加,使得石炭—二叠系残留的断块体厚度成"楔状"。其中,印支—燕山期的多期挤压抬升剥蚀及其所形成的构造反转,造成断块体东西两侧呈逐渐减薄的趋势;而喜山期的强烈拉张,使得断块体北深南浅,北翼深部呈"楔状"减薄,南部逐渐抬高。上述特征对该区石炭—二叠系煤系烃源岩的晚期成烃(主要是二次生烃)、成藏具有相当大的影响。Abstract: Carboniferous and Permian strata in the east of Jiyang and Linqing Depressions(the Shengli Oil Field) of the Bohai Bay Basin are zoned and blocked from east to west and zoned from north to south,influenced by multi-compressions during the Indosinian-Yanshanian stage and extensions during the Himalayan stage.Compression uplifts during the Indosinian-Yanshanian stage are strong in the northeast and weak in the southwest.Extensional uplifts during the Himalayan stage are large in the southeast and small in the northwest.Various "blocks" of different sizes,shapes and depths are formed.Blocks in the northeast are small and faulted while those in the southwest are big and jointed.In addition,superimposition of the two stages of tectonic movements has changed Carboniferous and Permian residual block bodies into "wedge shape".Multi-compressions,uplifts and erosions during the Indosinian-Yanshanian stage and the following tectonic reverse result in the gradually thinning trend in the east and west of blocks.Strong extensions during the Himalayan stage make blocks deep in the north and shallow in the south.Blocks are thinning in the deep northern flank like wedges and gradually uplifting in the south.The above-mentioned characteristics have relatively great impact on late hydrocarbon generation(mainly secondary hydrocarbon generation) and accumulation in Carboniferous and Permian in the Shengli Oil Field,the Bohai Bay Basin.
-
Key words:
- null /
-
[1] 宋国奇,徐春华,王世虎等.胜利油区古生界地质特征及油气潜力[M].武汉:中国地质大学出版社,2000.1~2 [2] 胡宗全,王传刚,张玉兰等.渤海湾盆地东濮凹陷上古生界潜山油气成藏条件评价[J].石油实验地质,2004,26(6):553~556,561 [3] 王果寿,缪九军,陆建林等.渤海湾盆地济阳-临清东部煤系烃源岩形成环境[J].石油实验地质,2006,28(4):325~329 [4] 王颖,赵锡奎,高博禹等.济阳坳陷构造演化特征[J].成都理工学院学报,2002,29(2):181~187 [5] 王世虎,夏斌,陈根文等.济阳坳陷构造特征及形成机制讨论[J].大地构造与成矿学,2004,28(4):428~434 [6] 常俊合,吕红玉,郭广辉等.下古生界碳酸盐岩生烃条件及二次生烃潜力评价:以临清地区TG5井为例[J].断块油气田,2001,8(1):13~15 [7] 侯创业,孟元林,李臣等.成藏史的数值模拟:以渤海湾盆地文安斜坡古生界为例[J].石油实验地质,2004,26(3):298~302 [8] 周建林.济阳坳陷上古生界煤成气成藏规律认识[J].地球科学与环境学报,2004,26(2):47~50 [9] 李荣西,廖永胜,周义等.济阳坳陷石炭-二叠系热演化与生烃阶段[J].地球学报,2001,22(1):85~90 [10] 苏惠,曲丽萍,张金川等.渤海湾盆地东濮凹陷天然气成藏条件与富集规律[J].石油实验地质,2006,28(2):123~128
计量
- 文章访问数: 662
- HTML全文浏览量: 59
- PDF下载量: 350
- 被引次数: 0