摘要
Abstract
The exploration rate of deep oil and gas in the Junggar basin is relatively low under the depth of 4 500 m.In re-cent years,deep oil and gas exploration targets have become a strategic replacement area for exploration and discovery.In order to find out the deeper subsurface structure,the two-dimensional seismic grid in the Junggar basin was reconstructed and de-ployed.Using the previously acquired and newly acquired 2D data,two-dimensional grid survey networks were formed,inclu-ding tens of lines.Based on the"two-wide and one-high"seismic technologies,a series of crucial acquisition technology are a-dopted,such as the"three-high and one-long"acquisition technology of"high-density shots,high-density receivers,high folds density,and long offset",which solved some critical issues of seismic signals characterized by weak energy,strong noise,poor imaging or un-imaging,etc.in deep targets exploration in Junggar basin.The imaging resolution of the newly processed data has been significantly improved,which provides a sound data basis for establishing the stratigraphic framework of the Carboniferous Permian system in the basin,defining the uplift and depression pattern of Carboniferous,and identifying the distribution charac-teristics of the lower combination strata and source rocks in the hydrocarbon-rich sag,and provides effective guidance for the next step of deep oil and gas exploration.关键词
准噶尔盆地/深层油气/地震采集/格架二维/资料品质/两宽一高Key words
Junggar basin/deep oil and gas/seismic acquisition/2D grid/data quality/two-wide and one-high seismic分类
天文与地球科学
