Zhang C.-H.,Strategic Research Center for Oil and Gas |
Qiao D.-W.,Strategic Research Center for Oil and Gas |
Li S.-Z.,Strategic Research Center for Oil and Gas |
Li S.-Z.,China University of Geosciences |
And 8 more authors.
Chinese Journal of Geophysics (Acta Geophysica Sinica) | Year: 2011
With the increasing effort on hydrocarbon exploration in China, more and more challenges are faced in exploration. The State Project of Strategic Area Survey and Evaluation for Oil and gas Resources has been carried out for 6 years. Under the support of this project, researches on seismic survey, gravity-magnetic-electric survey, and comprehensive geophysical exploration have been performed in several typical geologically complex areas where traditional geophysical exploration methods have been encountering great difficulties for long time. These areas include deep-water seas, western complex mountainous regions, Tibet plateau, carbonate outcrop in the south and volcanic regions. In addition, significant progresses have been made in development of micro-seismic tomography technology. Development of these technologies brings in a large quantity of valuable exploration findings. In total, the following six geophysical exploration technologies have been developed successfully long-cable seismic profiling exploration technology for deep-water sea, wide-line seismic profiling exploration technology for western complex mountainous area and the areas in south China with carbonate outcrop, plateau seismic survey technology, 3D gravity-magnetic-electric survey technology for complex areas, comprehensive geophysical exploration technology for volcanic areas and southern areas with carbonate outcrop, and natural seismic tomography technology for complex mountainous areas. This paper gives a description of these new technologies developed in The State Project of Strategic Area Survey and Evaluation for oil and gas Resources, and puts forward the ideas for geophysical exploration in geologically complex areas in the near future.
Zhang C.,Strategic Research Center for Oil and Gas |
Qiao D.,Strategic Research Center for Oil and Gas |
Li S.,Strategic Research Center for Oil and Gas |
Zhang M.,China National Petroleum Corporation |
And 3 more authors.
Shiyou Diqiu Wuli Kantan/Oil Geophysical Prospecting | Year: 2012
To improve seismic survey, as one of the State Projects of Strategic Area Survey and Evaluation for Oil and Gas Resources, a wide-line seismic study has been conducted in complex mountainous areas in Hero Ridge area in Qaidam Basin. Based on difficulties of seismic exploration and the previous seismic projects in the area, we propose some new strategies for this study. In this paper, we describe a series of techniques of the wide-line seismic including acquisition and processing for the area from field tests. The preliminary application results show that wide-line seismic exploration is applicable and effective for the complex mountainous areas in western Qaidam Basin.