Wide-line seismic acquisition technique and its application in complex mountainous area of Kuqa depression

Because of the complex surface and subsurface conditions as well as the poor shooting and receiving conditions encountered in seismic survey in the mountainous area of Kuqa depression, the acquired seismic data is low in S/N and difficult in imaging the subsurface structure. Aiming at this problem, we studied the wide-line seismic acquisition technique and applied it in western Qiulitage structural belt. Aiming at the complex geological and seismic conditions in the area, the technical countermeasures were proposed. Some basic parameters were evaluated, such as receiver interval, fold, maximum offset, receiver line interval, shooting and receiving parameters, and wide-line geometry was selected with 2 shots, 3 receiver lines, and 480 receiving traces on a line. The quality of the obtained profiles has been greatly changed, with much higher S/N in complex mountainous area and good imaging effect of the structure from shallow to deep underground.