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Keywords: mud weight
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Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1831
... and subjective outcomes. reservoir geomechanics upstream oil & gas wellbore integrity constraint-based reasoning reservoir characterization wellbore design artificial intelligence wellbore stability model caliper data model parameter mud loss mud weight inversion scheme fracture manual...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1336
... Abstract A proven field wellbore stability model provided mud weight (MW) calculations with high confidence for a shelf sea project in the Caribbean region. A well was drilled that experienced instability and presented with drilling temperatures that were much higher than any offset wells...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1674
.... An implicit root-finding approach is used to solve for the range of safe mud weights for the full inclination-azimuth parameter space, which greatly improves computational efficiency. Three-dimensional finite element modelling was also conducted to investigate the influence of the heterogeneity introduced...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0137
... reservoir geomechanics strength shear failure horizontal stress wellbore integrity geomechanical model investigation inclination anisotropy shale formation strength anisotropy composition rock strength anisotropy instability mineral Wellbore Design mud weight shale alsubaih tanuma shale...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0512
...% at concentrations of MPP as less as 1-4%, and filter cake was enhanced as well when comparing to the reference mud. In addition, MPP had a negligible to minor impact on mud weight, and this effect was resulted due to foaming issues. Other properties such as salinity, calcium content, and resistivity were negligibly...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-2178
... of the intermediate principal stress, the Mogi-Coulomb criterion predicts lower values of the minimum required mud weight than does the Mohr-Coulomb criterion. Wellbore Design criterion mud weight plane bedding plane Reservoir Characterization wellbore integrity failure criteria failure criterion...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0382
... stress Characterization Wellbore Design database Drilling reactivation pressure mud weight formation pressure fault reactivation pressure pore pressure drilling campaign fracture pressure fault damage zone 1. INTRODUCTION In the planning stages of any drilling campaign, the execution...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-851
... Windalia and/or Muderong formations, borehole stability was a priority to be addressed. On top of that, lost circulation events in the Pyrenees reservoir sands in previous wells pointed out that the drilling window could become extremely narrow or nonexistent, as increasing the mud weight to keep...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-011
... ABSTRACT: Rising demand in higher productivity as well as reducing drilling damages has encouraged companies to use mechanical earth modeling (MEM) for developing fields. Conventionally, in a safe mud weight window there are four different bounds which are employed by drillers to avoid...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-110
..., it is imperative to build a geomechanical model to plan and execute safe and efficient drilling operations. Compensated neutron density log and sonic log were used to build the geomechanical model, together with offset and actual mud weights. Formation stress, rock strength, minimum mud weights and fracture...
Proceedings Papers

Paper presented at the 51st U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2017
Paper Number: ARMA-2017-0932
... ABSTRACT: Probability theory has been increasingly applied to address the uncertainty of geomechanical parameters for prediction of allowable drilling mud weight. When conducting wellbore stability analysis, input parameters are estimated from well log data and empirical correlations...
Proceedings Papers

Paper presented at the 50th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2016
Paper Number: ARMA-2016-649
... weight program attempted to account for possible over pressure and weaker clay-rich zones while at the same time avoiding high losses. The new mud weight program allowed for significant borehole breakouts to occur in order to decrease mud losses; losses were half the amount compared to the previous well...
Proceedings Papers

Paper presented at the 50th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2016
Paper Number: ARMA-2016-087
... pressure with no drilling fluid returns when circulating. In this regard, a geomechanical analysis for southern Iraqi field was performed on field data from 45 deviated. The analysis identified the following areas of improvement. First, the mud weight being used was not changed properly with respect...
Proceedings Papers

Paper presented at the 49th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2015
Paper Number: ARMA-2015-665
... potential of execute a sidetrack. drilling operation geomechanics team upstream oil & gas planning phase wellbore integrity borehole section pipe attempt mitigation measure wellbore instability issue instability event plane trajectory mud weight natural fracture drilling fluids...
Proceedings Papers

Paper presented at the 49th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2015
Paper Number: ARMA-2015-048
... Abstract A large number of challenging ERD wells have already been successfully drilled in the Chayvo field using stability mud weights determined by a field-specific wellbore stability model. The original wellbore stability model was based on local insitu stresses, sonic log and shale...
Proceedings Papers

Paper presented at the 49th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2015
Paper Number: ARMA-2015-206
... in-situ stress magnitudes, orientations and formation properties. The stochastic risk and sensitivity analysis were performed using thirteen well data to evaluate the sensitivity of the input data on the study outcome. Results show that higher mud weight is expected to minimize wellbore instabilities...
Proceedings Papers

Paper presented at the 49th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2015
Paper Number: ARMA-2015-212
... to estimate the osmotic pressure resulting from an imbalance of water activities—in effect, estimating a higher mud weight needed to stabilize the well. This methodology was applied to a well drilled in the North Sea combined with mechanical wellbore-stability analysis and shows good agreement with wellbore...
Proceedings Papers

Paper presented at the 49th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2015
Paper Number: ARMA-2015-310
... thermal, mechanical and physiochemical processes that take place during drilling operation would be inevitable to suppress the risks and future hazards. input data upstream oil & gas stability mud activity distribution curve mud weight shale pore fluid wellbore stability pore pressure...
Proceedings Papers

Paper presented at the 47th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2013
Paper Number: ARMA-2013-341
... stress. Biot Upstream Oil & Gas mud weight tensor Reservoir Characterization pore pressure mud weight window reservoir geomechanics tensor form stress tensor Biot coefficient wellbore coefficient effective stress coordinate system vertical direction equation minimum horizontal...
Proceedings Papers

Paper presented at the 47th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2013
Paper Number: ARMA-2013-411
... of the geomechanical analysis was evaluating how hole conditions correlated to drilling mechanics. This was crucial to accurately estimate the stresses and rock properties in the field, so that overly high mud weights were not recommended for inclined wells, especially through the production zones. Extensive washout...

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