Comprehensive Mapping Of High-angle And Horizontal Well Logging Seismic Information

With the application of high-angle and horizontal wells in the exploration process of complex oil and gas fields,it is important to finely characterize the stratigraphic model to accelerate the drilling rate.However,only using logging data to describe the stratigraphic model is lacking in the macroscopic horizontal range.Based on the tracking data,using seismic data to improve the fine-grained accuracy of the formation model through the combination of logging seismic information is essential for the correct evaluation and tracking of reservoirs and the improvement of drilling rates.This article analyzes and designs the software functions of the well-seismic data and the stratigraphic model.The C++ language and Qt GUI development tools are used to implement data transformation management,visualization and human-interaction modeling.The doublebuffered drawing technique and the fast-filling triangle drawing algorithm solve the problem that the graphics out of view of the window which may flicker and caton,to improve the drawing efficiency of the large-scale and high-resolution well-seismic combination.For the problem of large amount of seismic data and low data SNR,the SNR is improved by noise reduction.The preferred effective or characteristic sampling points are fitted by cubic spline interpolation method,so that the seismic curve is smoothed and visual effect improved.With all above,the comprehensive visual research of log data and seismic information was realized.In the high-angle and horizontal well geosteering drilling,the two-dimensional initial model of the horizontal well can be established by the integration of the structural plan and the drilling design report.The application examples show that the macroscopic horizontal continuous traceability of seismic data and the high resolution characteristics of vertical logging data can be combined to apply the horizontal well geosteering and formation modeling technology in the expriment.Drilling,mud-logging,well-logging data and related geological research data can be used to achieve well trajectory,logging curve and seismic trace comprehensive mapping,through well-seismic joint depth-calibration,adjacent well data comparison,the formation structure model can be described accurately,also the reservoir and characteristic to improve modeling accuracy.