The Paradigm Education Series – Asia Pacific, kicks off with two Breakfast Talks: “Optimize Full Waveform Sonic Processing” (Perth, Australia) and “An Integrated Geomechanical Capability for Pre-Drill Study” (Jakarta, Indonesia). Attendance at both events is complimentary, and includes breakfast.
Optimize Full Waveform Sonic Processing – Perth, May 4th
This Breakfast Talk will present different steps in the full waveform sonic processing workflow, highlighting how to take advantage of sonic anisotropy analysis from cross dipole data. We will also provide a brief look at upcoming sonic frequency analysis tools in the Paradigm Geolog® Formation Evaluation solution.
Sonic logs form part of most well log acquisitions, and support a wide range of interpretation applications, from simple porosity and travel time estimations to more complex geomechanical properties studies, anisotropy and shear studies, and permeability estimation.
Sonic processing is often performed by the acquisition contractor. This adds extra cost and can also prevent end users from applying different filters, correcting possible defects, or even performing additional workflows that may not have been covered by the original budgeted logging and processing program. An example might be sonic anisotropy analysis from an acquired cross dipole.
Geolog solves this problem by providing a vendor-independent, full waveform sonic processing capability, that supports every tool on the market. This module contains a full set of tools for pre-processing and processing sonic data, allowing the user to obtain the best semblance and picking possible. A full workflow for sonic anisotropy is included with the application, allowing you to evaluate energy, slowness and travel time anisotropies, in order to completely understand the anisotropy around the borehole.
An Integrated Geomechanical Capability for Pre-Drill Study – Jakarta, May 12th
This presentation shows how we use our established geoscience strengths to provide differentiated, high-quality geomechanical interpretation. The result is an integrated 3D model that can be easily used to plan safe, effective wells.
We will show how our velocity toolkit provides the geologically constrained, high-resolution interval velocity needed to create thorough, robust, calibrated pre-drill pore and fracture pressure volumes.
We will also demonstrate how Geolog 7.4’s updated 1D geomechanical workflow allows the generation of rock properties, stresses and strengths. These are then used to create and calibrate a 3D geomechanical model which is sequentially restored using our finite element technique, to predict the principle stress orientations and dilatation throughout the entire model.
Predicted pressures and principle stress orientations can be easily extracted along planned wells. We will show an intuitive display of the same via stereonet, plus features such as mud window calculation, which allow the prediction of breakouts, tensile fractures, and ultimately the probability of a well’s failure during drilling and geosteering.
Additionally, the 3D geomechanical model can be used to detect and flag critically stressed faults that can be targeted for increased flow rates or avoided, if deemed a drilling risk.