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Comparison of permeability estimation models

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Proceedings Papers

Paper presented at the Abu Dhabi International Petroleum Exhibition and Conference, November 9–12, 2015
Paper Number: SPE-177556-MS
... for efficiency comparison in terms of their modeling and prediction accuracy. In addition, the two models were statistically validated based on observed-predicted response matching. Both BMA and LASSO have led to very accurate modeling and excellent matching between the observed and predicted core permeability...
Proceedings Papers

Paper presented at the SPWLA 24th Formation Evaluation Symposium of Japan, October 11–12, 2018
Paper Number: SPWLA-JFES-2018-M
... locations. The comparison was attained with respect to the variance estimation through the cross-validation procedure. It was concluded that Bayesian Kriging is more accurate prediction of formation permeability than the universal Kriging. geologic modeling geological modeling machine learning...
Proceedings Papers

Paper presented at the SPE Russian Petroleum Technology Conference, October 12–15, 2021
Paper Number: SPE-206499-MS
... in permeability was set by changing the permeability of the layers while maintaining the average value). The comparison shows a fairly good agreement of the analytical solution with the model calculations before the start of watering. In Fig. 8 , the onset of water cut is clearly seen by an increase in fluid...
Proceedings Papers

Paper presented at the SPWLA 26th Formation Evaluation Symposium of Japan, September 30–October 7, 2021
Paper Number: SPWLA-JFES-2021-E
... Permeability using LPI_ML with core permeability RCA and whole core K Track 1 zone / thickness Track 7 Comparison of LPI_NMR and Track 2 core porosity and total log porosity LPI_ML (Neutron-Density) The log plot and permeability histograms (Figure 4) Track 3 core permeability, old model for show very...
Proceedings Papers

Paper presented at the SPWLA 26th Formation Evaluation Symposium of Japan, September 30–October 7, 2021
Paper Number: SPWLA-JFES-2021-D
... of Permeability permeability distribution. Distribution of 9 wells STEP 6 : Apply STEP 5 to the feature vectors of KED and The error of the permeability distributions estimated by CK for the comparison between the these methods to those of true value are summarized in permeability distribution estimated...
Proceedings Papers

Paper presented at the SPE Russian Petroleum Technology Conference, October 12–15, 2021
Paper Number: SPE-206620-MS
.... The proposed approach is devoid of an important drawback in comparison with deterministic approach for assessing porosity - taking into account the effect of gas. It should be noted separately that this approach assumes that all methods are qualitatively standardized. Estimation of the permeability...
Proceedings Papers

Paper presented at the SPE Reservoir Characterisation and Simulation Conference and Exhibition, September 17–19, 2019
Paper Number: SPE-196679-MS
... that these new history matched models are likely to lead to new reservoir performance forecasts which could have a major impact on the field development strategy. Figure 16 Comparison of permeability enhancement in the vicinity of the faults when using the Effective Medium Theory to estimate...
Proceedings Papers

Paper presented at the SPWLA 56th Annual Logging Symposium, July 18–22, 2015
Paper Number: SPWLA-2015-N
... it more reliable to compare core measured permeability and modeled permeability as the model validation criteria. Fig.13 Comparison Coates equation evaluated permeability with core measured one Figure 13 represents comparison of the direct core measured permeability with Coates equation estimate...
Proceedings Papers

Paper presented at the SPE Unconventional Gas Conference and Exhibition, January 28–30, 2013
Paper Number: SPE-163953-MS
... permeability in mD; ϕ is rock porosity in %. By using the models expressed in figs. 4 and 6 , porosity can be estimated from acoustic log, and permeability can also be calculated. Several field examples of Chang 6 Formation in north Ordos basin are processed, the estimated results and comparison...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-3216561
.... NMR Permeability Estimating NMR permeability using the Timur-Coates model. Comparison between permeability Make a comparison between Stoneley and NMR permeability to evaluate the potential of using Stoneley waves estimating permeability. Stoneley Permeability Stoneley wave is a surface wave...
Proceedings Papers

Paper presented at the SPE Russian Petroleum Technology Conference, October 15–17, 2018
Paper Number: SPE-191690-18RPTC-MS
... into account. Then continuous log effective permeability curves were estimated based on the equations, derived during the analysis of PVT-properties and SCAL data. Finally, the comparison between log and well test permeability was performed. It has been discovered that the developed methodology can be valid...
Proceedings Papers

Paper presented at the SPWLA 61st Annual Logging Symposium, June 24–July 29, 2020
Paper Number: SPWLA-5073
... on a "ground-truth" core database representing samples from different geology formations. The application of the machine learning permeability model demonstrates a greater than 50% reduction of the mean square error in comparison to traditional SDR and Timur-Coates permeability models (KSDR and KTIM...
Proceedings Papers

Paper presented at the SPE Russian Petroleum Technology Conference, October 12–15, 2021
Paper Number: SPE-206493-MS
... connectivity and quantitative estimate of permeability in homogenous reservoirs. The first study of quantitative comparison of tracer survey against pressure pulse-code interference survey. Tracer survey and PCT efficiency was compared on 3D numerical models. Presence of synthetic models, describing...
Proceedings Papers

Paper presented at the Offshore Technology Conference Brasil, October 29–31, 2019
Paper Number: OTC-29924-MS
...., Society of Petroleum Engineers ; 2002 . Land CS . Comparison of calculated with experimental imbibition relative permeability . Soc Pet Eng J 1971 ; 11 : 419 – 25 . Land CS . Calculation of imbibition relative permeability for two-and three-phase flow from rock properties . Soc...
Proceedings Papers

Paper presented at the ISRM International Symposium - 8th Asian Rock Mechanics Symposium, October 14–16, 2014
Paper Number: ISRM-ARMS8-2014-257
... permeability measurements shown in the same figure reveals that permeability is estimated in accuracy less than one order of magnitude in 9 (53%) of 17 comparisons. The model cannot predict very well low permeability less than 10-7 cm/s and high than 10-4 cm/s. It may indicate limitation of applicability...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 4–7, 2020
Paper Number: OTC-30763-MS
...). In this paper, the advanced machine-learning algorithm was applied for permeability modelling given the electrofacies and well logging interpretations in comparison with multiple linear regression and smooth generalized additive modelling. The discrete electrofacies distributions have been obtained from our...
Proceedings Papers

Paper presented at the 2018 SEG International Exposition and Annual Meeting, October 14–19, 2018
Paper Number: SEG-2018-2985629
... 2 (=1.013x1015 mD) and " is in mS/m at a frequency of 1 Hz. Two NMR-based permeability prediction equations were evaluated for comparison of NMR-based and CR-based length scales. The Timur-Coates (T-C) model (Timur, 1969; Coates et al., 1998) uses the porosity and the ratio of the free fluid index...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 4–7, 2015
Paper Number: OTC-25646-MS
... with the measured permeability data than the reduced multiple linear regression model. Furthermore, one can conclude how is efficient to adopt the Bayesian Model Averaging for reducing the complexity of the data modeling with accurate estimation and less computation cost and time in comparison with the stepwise...
Proceedings Papers

Paper presented at the SPE Nigeria Annual International Conference and Exhibition, August 5–7, 2019
Paper Number: SPE-198830-MS
... online, well tests were conducted to determine values for well skin, reservoir permeability, drawdown etc. tubing head pressures and bottom hole pressures were compared with estimates from the P10/50/90 models for the reservoir. This comparison showed that the P10 and P50 models underestimated...
Proceedings Papers

Publisher: Society of Petroleum Engineers (SPE)
Paper presented at the SPE Annual Technical Conference and Exhibition, September 21–23, 2021
Paper Number: SPE-206156-MS
... Schematic representation of 3-way coupled modeling Comparison of Dynamic and 3-way Coupled Modeling Results The reservoir in the study is a platform type carbonate buildup reservoir with a 4-way dip closure (as shown in Figure 3 ). It has about ∼3 Tscf GIIP and ∼90 mmstb OIIP with an estimated...

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