Porosity Inversion Of Seismic Data And Its Application In Groundwater Reserves Estimated

According to the hydrogeological conditions and the needs of the industrial and agricultural construction in all aspects, the underground water should be utilized in a reasonable way 。 With the development of industry and the need of agricultural irrigation and other human activities, exploitation of groundwater is more and more frequent。At present, there are already underground funnel, sea water, surface collapse and a series of problems caused by unreasonable use of groundwater 。 To find out the groundwater reserves and a reasonable exploitation of groundwater has become a problem to be solved in some areas。In the existing methods of exploration, geophysical exploration occupies a very important position。Reservoir porosity is an important parameter in the oil and gas prediction, and it’s also an important parameter of evaluating groundwater reserves. In the current study, the research method of the porosity have a dozen methods。On speculation and to find out the groundwater reserves,How to make use of seismic data inversion of porosity which is the important parameter of groundwater reserves become contemporary geophysicists study is a important subject。This article embarks from the volume of rock physical model, using the empirical formula method and the single parameter inversion method is analyzed。Through analysis,we worked out the rule about the seismic p-wave velocity with the changing of porosity, saturation and shale content 。On the basis of the forward conclusion, we got the groundwater reservoir porosity parameters by the method of inversion。The inversion method use more classic empirical formula method and parameter inversion method。After processing field measured seismic data, the vertical and horizontal wave velocity are got。 We use the seismic data of a certain region in Inner Mongolia combined geophysical well logging data inversion。The inversion conclusion shows that using the seismic data inversion underground reservoir porosity parameters is really practical, the error on the area of porosity measurement parameters is small compared with the geophysical well logging porosity parameters and alignment is very high。...