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Keywords: accuracy
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Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1359
... and accuracy of the event location are both highly dependent on the geometry of the geophone network and the number of the sensors used. To capture broadband seismic signals and achieve high accuracy in locating events, a densely spaced geophone network is required. This is a challenge to state of the art...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1764
... accuracy up to 98% on tested data. As well, cross-validation on trained data was performed for enhancing the predictivity of algorithms. Finally, a performance evaluation for the selected machine learning algorithms was introduced based on their ability to predict abnormal pressure zones. Promising results...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-2011
... of the same. It is, therefore, of vital importance to make a correct discrimination of the landslides to obtain maps with a high success degree, measured as the value of accuracy in the classification predictions. Machine learning procedures, such as the random forest algorithm, could be a great help...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1225
... mechanics logistic regression mining science accuracy correct prediction metals & mining mechanics geomechanics symposium underground excavation damage international journal damage scale probability prediction interpretation scenario underground space technology rockburst damage potential...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1301
... Abstract Constant displacement discontinuity method (DDM) loses accuracy in predicting the opening and shearing displacement discontinuities of multiple fractures when fractures are closely spaced. We introduced an efficient higher order DDM (HDDM) that extensively improves the accuracy...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1914
... an artificial neural network (ANN). The data used was collected during drilling different formations with a complex lithology. A cleaned data set (2,926 measurements) was used for building the ANN model. The model was trained, tested, and optimized to provide high accuracy prediction for UCS. The results showed...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1916
... Abstract The equivalent circulating density (ECD) is considered a critical parameter during the drilling operation. The ECD measurement should have a high degree of accuracy not to cause well control problems. The practical way for measuring the ECD is costly and the other alternative way...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1668
... to obtain the best model. The obtained results showed that the developed model has high accuracy in both training and testing processes with correlation coefficient (R) and average absolute percentage error (AAPE) values of 0.98 and 1.1%, respectively. The model was validated with another well form the same...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0362
... for predicting fracture interaction with more than 90% accuracy for opening or crossing behavior. Results were compared with experimental data available in literature and numerical simulations. The results show that for higher angles of approach and higher stress differential, there is a strong tendency...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1791
..., p-wave velocity and geological origin. The results indicate that the self-organizing maps have a promising potential in lithological clustering. The algorithm accurately clusters limestone classes that have consistent high or low values for at least one of the input parameters. However, the accuracy...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1885
... mechanism of CO 2 injection process, realizes the global numerical simulation decoupling analysis of far-field deformation, develops a reasonable theoretical basis and practical method for the gas injection process. Upstream Oil & Gas accuracy reservoir rock mass vertical displacement...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-105
... machine and random forest algorithms are employed to conduct supervised learning. In addition, multiple trainings are conducted to meet the accuracy, and then the accuracy of different algorithms is compared. The prediction results of testing data indicate that the prediction model of lost circulation...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-1079
... and memory utilization without a loss of accuracy. hydraulic fracturing fracture length fracture height fracture aperture input parameter correction factor nonuniform height stress correction factor single fracture analytical solution layered formation Upstream Oil & Gas accuracy...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-1098
... specific energy Artificial Intelligence accuracy optimization MSE machine learning drilling efficiency pore pressure neuron critical drilling data formation pore pressure estimation 1. INTRODUCTION Nowadays, many drilling operations are not being performed with optimum efficiency...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-1211
... and control points. Although each software package is able to create the desired point clouds, different techniques are used to produce them. For a geotechnical investigation, it is important to understand the accuracy of the software being used in order to have confidence in the reliability of the digital 3D...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-494
... resolution Upstream Oil & Gas target plate accuracy controller SURF hazard data collection camera 3 deployment traditional instrumentation closure camera 1 plane Displacement Measurement measurement resolution 1. INTRODUCTION RESPEC was awarded the National Institute for Occupational...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-247
... dynamic and static measurements, a good agreement was observed. The accuracy of the obtained results have shown that artificial neural networks are appropriate tools to predict the values of E s based on E d data of limestone formations. Artificial Intelligence accuracy Upstream Oil & Gas...
Proceedings Papers

Paper presented at the 51st U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2017
Paper Number: ARMA-2017-0047
..., the computational accuracy and efficiency of the proposed method are investigated. The back-calculations between the algorithm, which considers the adjustment of the region of interest, and the non-adjustment algorithm are compared to understand how the adjustment affects the back analysis results. In addition...
Proceedings Papers

Paper presented at the 51st U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2017
Paper Number: ARMA-2017-0396
..., where the tip asymptotic solution is used to advance the moving fracture front. To verify the accuracy of the algorithm, its plane strain version is tested against the reference solutions for the plane strain hydraulic fracture for different regimes of propagation. To evaluate the two non-local...
Proceedings Papers

Paper presented at the 50th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2016
Paper Number: ARMA-2016-224
... used to conduct computations resulting in high levels of accuracy and precision. Using our results and relevant examples from the literature, we discuss the benefits and shortcoming of the proposed approach, the appropriate conditions and types of environments for application and suggested...

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