The first implementation of vertical and horizontal wave exploration in Eastern geophysical prospecting
Chinese oil network news reporter was informed that in January 5th, the East geophysical geophysical Department Qinghai 294 team of Qinghai oilfied TUOFENGSHAN - Saline Lake - dumb Erduobo 2D seismic acquisition project is the Qaidam Basin tense operations, marking the country's first wave of alternate exploration projects in Tibetan Plateau operation.
The work area is located in the Qaidam Basin of the Qinghai Tibet Plateau, with an elevation of 2900 meters. Area around Gobi, saline alkali land, marsh, salt, and salt factory facilities, Qinghai Tibet railway across the area, brought great difficulties to the production. According to the conventional longitudinal wave exploration method, the quality of seismic data is poor, it is difficult to carry out the rule of tracking the distribution of the strata and to carry out the gas detection.
In view of the difficulties of the project, the eastern geophysical exploration is equipped with 3 shear wave sources, and the geophone puncher is developed according to the salt alkali crust geology, and the low frequency + transverse wave source joint excitation technology is applied for the construction. This is the eastern geophysical exploration in China for the first time using this method for construction and production, low frequency excitation can enhance the longitudinal seismic wave energy, expand the frequency information, S-wave vibroseis can reduce the gas bearing strata attenuation of seismic waves, improve the gas anomaly zone structure imaging, and conducive to the further implementation of the regional stratigraphic distribution of the two node, improve the interpretation accuracy of gas detection. The 294 team strengthened the production organization, technical support and equipment material support to ensure the successful operation of the project.
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