Method Research On Improving The Resolution Of The Thin Layer

In the processing of well logging, because of construction of instrumentation vertical resolution, log response value of thin bed is influenced by adjacent rocks greatly, which makes the interpretation accuracy of the parameters drop. The thin bed problems are yielded when thicknesses of beds are thinner than instrumentation vertical resolution, and the modal thin beds are thin bedded alternation of sand shale rocks. The log values of thin bedded alternation of sand shale rocks are obtained from the convolution of log values of thin beds and argillaceous adjacent rocks, and the values are combined response of formations which are contained by instrumentation vertical resolution, So the log values are fuzzy and can not reflect the true log response effectively. At the moment, many oil fields of our country have gone into the intermediary and later stage of exploitation, heavy oil of thin beds has attracted people eyes more and more, the thin beds have become the main ascending area. And then, the evaluation and interpretation which are aimed at reservoirs of thin beds and thin bedded alternation are developed.In view of features of thin beds response, in order to interpret and evaluate thin beds accurately, we need to advance the resolution of borehole logs, the methods of advancing the resolution researched in the text are wavelet transformation technique, Walsh function and acuity matching. Because natural gamma GR, acoustic time AC, deeply should resistivity RT logging, is using conventional logging data formation of the most basic evaluation three logging method, the logging response directly related to the accuracy of the evaluation of stratum and fluid, so we are using wavelet transform method, Walsh function method, resolution matching method of three kinds of well logging curves for improving resolution processing, and analyses three kind of improve the logging curve method has the merits of the resolution.Array induction imaging log has apparent advantages and has been accepted generally, the resolution of Array induction imaging log is high, in order to improve the resolution of log curves and the interpretation accuracy of parameters of reservoirs, we will synthetisize the signals of the HDIL in the text.We use the methods referred in the text to handle actual well logging data, the features of thin bed well log have been improved obviously, and we have acquired preferable fruit.