... Abstract In this paper, we present the first field application of a novel method to estimate in-situ rock stress. This technique, which we have baptized "PKM (Pestman-Kenter-vanMunster) method", uses Acoustic Emission-controlled polyaxial reloading of core in the laboratory. The method works...

... in the time between the two registrations. pressure change theoretical ocean tide estimation rock parameter registration machine learning fluctuation schulze fluid level correlation drillstem testing upstream oil & gas amplitude artificial intelligence pressure recording reservoir...

... to estimate the best parameters to use to optimize the cutting efficiency for both particular field cases. Finally some basic rules are given to design tools (drill bits or cutting chain) to minimize the specific energy and to maximize the rate of penetration. The model can also be used to estimate the power...

... various techniques. Subjective estimation, arbitrary "minimums", grading techniques, and stepwise estimation have all been commonly used. Recently, more powerful techniques such as Monte Carlo simulation and decision analysis have come into popular use. Over the past decade these two techniques have been...

... Abstract To help design the completion of an Indonesian development well, we have carried out cross-dipole dispersion analyses over a depth interval of approximately 500 ft. Dispersion analyses provide estimates of radial extent of formation damage and indicators of stress- and bedding-induced...

... and strike can be detected from borehole imaging logs such as BHTV/UBI or FMI/FMS. By comparing the depths of fractures and those of thermal anomalies detected on temperature logs, we can identify which of the fractures are permeable. Stresses on fracture planes can be estimated from the fracture orientation...