The Tectonics Characteristics Of Haoxi Qian The Hird And Forth Segments And Its Control Over Oil And Gas Reservoirs In Jianghan Basin

In this paper, the regional tectonic characteristics in the study area is simply analyzed, and the research area structure pattern is the preliminarily understood. On this basis, making full use of and analysing the existing research results, through the drilling data and seismic profiles to identify three sequence boundaries, the forth-third sections in Hao West area are divided into SQ3-SQ6three class sequences. The forth-third sections limit of latent potential has8Ma(Million annual), and belongs to the three sequence categories. By using discovery seismic interpretation software, combining with drilling, logging datas,and making full use of seismic profiles, horizontal slice and the variance body seismic information, the discovery interpretation system takes structural interpretation through section amplification, drawing arbitrary diagonal, multiple window profile comparison andencryption interpretation means. In general idea,the Qianjiang group structures which are verall terrain from northeast to southwest direction are monoclinal structures.Affected by tectonic extrusion before jinghe structures moving and plastic flow of salt effect, the study area ultimately forms fault noses and faulted anticline structures. This text analyzes the main factors of controlling on oil and gas reservoirs formation, it shows that monoclinal structures and faults damage to the research area of oil and gas reservoir seriously. Oil and gas reservoirs are mainly controlled by fault noses where it forms tectonic traps easily. Tectonics control over a large range of oil-water interface distribution. Oil layers change into water layers from structure of high to structure of low which makes it hardly to find large oil and gas reservoirs but smaller fault notes oil and gas reservoirs. Preliminary prediction of favorable reservoir areas is mainly distributed in the hao32, hao38oblique-land hao82wells.