Analysis Of Shallow Static Correction Problem And The Application Of Static Correction With First Arrival

Statics method and its effectiveness is always the focus technical problem in coalfieldseismic exploration.The paper systematically reviews the seismic statics principles and basic concepts. Onthe basis of analyzing the statics method and its engineering application status, the authorfocused on and analyzed the shallow statics problems and software technology applications,major technical deficiencies brought out during coal exploration in western region, and thencame to some conclusions on these problems.By building the shallow statics analysis model, applying seismic record forwardnumerical simulating and first break refraction static corrections, the author systematicallycarried out test and analysis on the problems, such as statics method and software technologyapplications, some pitfalls may existed or have occurred in data processing and so on. And thenumerical simulating and testing results could guide the processing and interpretation of staticcorrection of coalfield seismic data.Paper analyzes the conditions of surface consistency hypothesis establishmen in theprocess of static correction.，Giving the corresponding improvement measures to improve theaccuracy of static correction to the problems that not meet above assumption. Especially Forthe necessity and effectiveness of statics method on the non-vertical incident wave, the authorcarried on numerical simulation and tests, systematically, and obtained clear and intuitiveinformation of the results and conclusions of the test.Then, based on the shallow statics analysis and processing application problems, as tomeasured characteristics of seismic data of Sangshuping exploration area in HanChen, on thebasis of the processes and comparative tests of parameters, reasonable and effective processwas chosen for fine processing in Sangshuping and good results were achieved, eventually.