Research On Digital3C Seismic Exploration Technology&the Using In Hai La’er Oil Basin

Seismic data acquisition is an important part of seismic exploration, seismic explorationis widely used at present, make there is nothing comparable to this contribution in the field ofoil and gas exploration, though its technology has been very mature, but there are still someproblems are difficult to solve their own P-wave exploration. Multi-component seismicexploration technology can solve the problem cannot be solved in compressional waveexploration problems, mainly reflected in: when the longitudinal wave transmission acrossshallow reservoir, P-wave energy can disperse, makes the geological structure imaging layerunder fuzzy. By using multicomponent exploration, converted waves can penetrate the gas,and the gas of accurate imaging; in some areas, covering layer itself is a high impedancematerial, such as rock hill or volcano rock, this rock is the mode conversion layer is verystrong, most of the wave energy into wave energy, the P-wave poor imaging quality. By usingmulticomponent exploration, converted shear wave can improve the seismic imaging qualityof high impedance area; in some areas, compared with the overlying strata, the P-waveimpedance of some reservoir is not big enough, the P-wave reflection energy is not strongenough, the reservoir imaging is not clear. However, when the transverse wave impedancedifference may be large, making the reservoir clear imaging; for the rock medium containingfluid, P-wave reflection amplitude decreased significantly, shear wave reflection amplitudeunchanged, if the shear wave reflection amplitude changes, then it may mean lithology change.In addition, multi-component seismic data by the Poisson ratio can be directly linked toparameters of reservoir rock property, direct identification of lithology; anisotropic mediumfor the general performance of the velocity anisotropy or azimuthal anisotropy, when the wavepropagation in anisotropic medium, the rate was different in all directions, therefore, to reachthe ground receiving point time and receive are not in the same direction.Multi-component seismic exploration technology of multi-component will provide a newunderstanding of reservoir for the people, can determine reservoir characteristics of P-wavedata alone can not understand. With this technology, from exploration to all key decisionsintegrated reservoir optimization, seismic data will play a very important role. Multi-component seismic exploration technology, its impact will be less than the seismicexploration from the2D to the3D leapThis paper first introduces the detection principle of geophone technology, then a detailedanalysis of the working principle and technical performance of the three component digitalgeophone, and the three component geophone with traditional analog geophone theoreticalparameters and the measured parameters are carefully studied and compared; the actual useeffect by using many experimental methods for comparing two detectors, ultimately throughmany aspects of the acquisition data, provide direction to the open collection of threecomponent seismic in similar area.