Geomechanical Sanding Prediction in Oil Fields by Wellbore Stability Charts

Document Type: Research Paper

Authors

Department of Petroleum and Chemical Engineering, Sultan Qaboos University, Muscat, Oman

Abstract

Sand production is a universally encountered issue during the exploration of unconsolidated sandstone reservoirs particularly during production. The production of sand particles with the reservoir fluids depends on the stress around a wellbore and the properties of the reservoir rocks and fluids. Therefore, it is crucial to predict under what production conditions sanding will occur and when sand control is needed to come up with the optimal field development plan. This paper presents new geomechanical stability charts for Oman that have been generated to predict sand production in sandstone formations during the production process. The produced stability charts simplified the complicated task of geomechanical analysis, and they are ready for direct applications by petroleum engineers with no need to be specialized in rock mechanics. This was achieved by utilizing a three-dimensional model which was previously justified. The applied model utilized the linear poroelastic constitutive model for the stresses around a borehole in conjunction with Mogi-Coulomb law to predict the failure of sandstone formations. In this work, moreover, the optimum well trajectories for Omani oil fields are reported. 

Keywords


[1]     Aborisade O. Practical Approach to Effective Sand Prediction, Control and Management. [Doctoral dissertation]. Abuja: African University of Science and technology; 2010.

[2]     Bianco LC, Halleck PM. Mechanisms of arch instability and sand production in two-phase saturated poorly consolidated sandstones. InSPE European Formation Damage Conference 2001 Jan 1. Society of Petroleum Engineers.

[3]     Osisanya SO. Practical guidelines for predicting sand production. InNigeria Annual International Conference and Exhibition 2010 Jan 1. Society of Petroleum Engineers.

[4]      Zare-Reisabadi MR, Kaffash A, Shadizadeh SR. Determination of optimal well trajectory during drilling and production based on borehole stability. International Journal of Rock Mechanics and Mining Sciences. 2012 Dec 1;56:77-87.

[5]     Al-Ajmi A, Zimmerman R. A new 3D stability model for the design of non-vertical wellbores. InGolden Rocks 2006, The 41st US Symposium on Rock Mechanics (USRMS) 2006 Jan 1. American Rock Mechanics Association.

[6]     Ewy RT. Wellbore-stability predictions by use of a modified Lade criterion. SPE Drilling & Completion. 1999 Jun 1;14(02):85-91.

[7]     Al-Ajmi A. Wellbore stability analysis based on a new true-triaxial failure criterion, [Doctoral dissertation]. Stockholm: KTH; 2006.

[8]     Chabook M, Al-Ajmi A, Isaev V. The role of rock strength criteria in wellbore stability and trajectory optimization. International Journal of Rock Mechanics and Mining Sciences. 2015;100(80):373-8.

[9]     Elyasi A, Goshtasbi K. Using different rock failure criteria in wellbore stability analysis. Geomechanics for Energy and the Environment. 2015 Jul 1;2:15-21.

[10]  Rahimi R. The effect of using different rock failure criteria in wellbore stability analysis. [Master Thesis]. Missouri: Missouri University of Science and Technology; 2014.

[11]  Al-Shaaibi S. Three Dimentional Modeling For Predicting Sand Production. [Master Thesis]. Oman: Sultan Qaboos University; 2011.

[12]  McLean MR, Addis MA. Wellbore stability: the effect of strength criteria on mud weight recommendations. InSPE annual technical conference and exhibition 1990 Jan 1. Society of Petroleum Engineers.

[13]  Ramos GG, Mouton DE, Wilton BS. Integrating rock mechanics with drilling strategies in a tectonic belt, offshore Bali, Indonesia. InSPE/ISRM Rock Mechanics in Petroleum Engineering 1998 Jan 1. Society of Petroleum Engineers.

[14]  Kingsborough RH, Williams AF, Hillis RR. Borehole instability on the Northwest Shelf of Australia. InSPE Asia-Pacific Conference 1991 Jan 1. Society of Petroleum Engineers.

[15]  Onaisi A, Locane J, Razimbaud A. Stress related wellbore instability problems in deep wells in ABK field. InAbu Dhabi International Petroleum Exhibition and Conference 2000 Jan 1. Society of Petroleum Engineers.

[16]  Awal MR, Khan MS, Mohiuddin MA, Abdulraheem A, Azeemuddin M. A new approach to borehole trajectory optimisation for increased hole stability. InSPE middle east oil show 2001 Jan 1. Society of Petroleum Engineers.

[17]  Yi X. Numerical and analytical modeling of sanding onset prediction. [Doctoral dissertation]. College Station, Texas: Texas A&M University; 2004.

[18]  Yi X, Valko PP, Russell JE. Predicting critical drawdown for the onset of sand production. InSPE International Symposium and Exhibition on Formation Damage Control 2004 Jan 1. Society of Petroleum Engineers.

[19]  Ewy RT, Ray P, Bovberg CA, Norman PD, Goodman HE. Openhole stability and sanding predictions by 3D extrapolation from hole collapse tests. InSPE Annual Technical Conference and Exhibition 1999 Jan 1. Society of Petroleum Engineers.

[20]  Al-Ajmi AM, Al-Harthy MH. Probabilistic wellbore collapse analysis. Journal of Petroleum Science and Engineering. 2010 Nov 1;74(3-4):171-7.

[21]  Al-Aamri M. Geomechanicist, Petroleum Development of Oman. Personal communication, 2017.

[22]  Al-Awad MN, Al-Ahaidib TY. Estimating the amount of free sand in the yielded zone around vertical and horizontal oil wells. InSPE Technical Symposium of Saudi Arabia Section 2005 Jan 1. Society of Petroleum Engineers.

[23]  Araujo Guerrero EF, Alzate GA, Arbelaez-Londono A, Pena S, Cardona A, Naranjo A. Analytical prediction model of sand production integrating geomechanics for open hole and cased–perforated wells. InSPE Heavy and Extra Heavy Oil Conference: Latin America 2014 Sep 24. Society of Petroleum Engineers.

[24]  Fjar E, Holt RM, Raaen AM, Risnes R, Horsrud P. Petroleum related rock mechanics. Elsevier; 2008 Jan 4.

[25]  Kanfar MF, Chen Z, Rahman SS. Risk-controlled wellbore stability analysis in anisotropic formations. Journal of Petroleum Science and Engineering. 2015 Oct 1;134:214-22.

[26]  Małkowski P. Behaviour of joints in sandstones during the shear test. Acta Geodyn. Geomater. 2015;12:399-410.

[27]  Volonte G, Scarfato F, Brignoli M. Sand prediction: a practical finite-element 3D approach for real field applications. InSPE Annual Technical Conference and Exhibition 2010 Jan 1. Society of Petroleum Engineers.

[28]  Wang H, Sharma MM. A fully 3-D, multi-phase, poro-elasto-plastic model for sand production. InSPE Annual Technical Conference and Exhibition 2016 Sep 26. Society of Petroleum Engineers.

[29]  Al Khalifin NS. Geomechanical Stability Charts For Sanding Prediction [Master Thesis]. Oman: Sultan Qaboos University; 2017.

[30]  Shaheed B. Wellbore stability Charts for Shale Formations During Drilling Operations [Master Thesis]. Oman: Sultan Qaboos University; 2017.

[31]  Al-Ajmi AM, Zimmerman RW. A new well path optimization model for increased mechanical borehole stability. Journal of Petroleum Science and Engineering. 2009 Nov 1;69(1-2):53-62.