Estimation of the horizontal in-situ stress magnitude and azimuth using previous drilling data

Abstract

Oil exploration and production, well stability, sand production, geothermal drilling, waste-water or CO₂ sequestration, geohazards assessment, and EOR processes such as hydraulic fracturing, require adequate information about in-situ stresses. There are several methods for analyzing the magnitude and direction of in-situ stresses. The evaluation of tensile fractures and shear fractures in vertical oil and gas wellbores using image logs is one of these methods. Furthermore, when image logs are run in boreholes, they can be extremely costly and possibly stop the drilling. The data for this study were gathered from seven directional wells drilled into a strike-slip fault reservoir in southern Iran. Vertical stress, minimum horizontal stress, pore pressure, Poisson's ratio of formations, and 233 mud loss reporting points make up the entire data. This is the first time maximum horizontal stress direction has been calculated without referring to image log data. In addition, the points of lost circulation were categorized into natural and induced fracture. The results revealed that, the maximum horizontal stress direction of the reservoir was calculated at 65° northeast-southwest. The error rate is roughly 10° when comparing the results of this investigation to those obtained from the image log. The maximum horizontal stress direction is calculated precisely. In terms of tensile fracture pressure, the in-situ stress ratio identifies the safest as well as the most critical inclination and azimuth for each well.

Keywords

Well instability / Lost circulation / Drilling induced tensile fracture / Image log / In-situ stress / Horizontal stress direction

Conflict of Iinterest and authorship conformation form

All authors have participated in (a) conception and design, or analysis and interpretation of the data; (b) drafting the article or revising it critically for important intellectual content; and (c) approval of the final version.

This manuscript has not been submitted to, nor is under review at, another journal or other publishing venue.

The authors have no affiliation with any organization with a direct or indirect financial interest in the subject matter discussed in the manuscript

The following authors have affiliations with organizations with direct or indirect financial interest in the subject matter discussed in the manuscript.

References

[1] K. Shahbazi, et al., Investigation of production depletion rate effect on the near-wellbore stresses in the two Iranian southwest oilfields, Petrol. Res. 5 (4) (2020) 347-361.

[2] A.A. Tanha, et al., Comparison of well test data with reservoir data obtained by well-log, using well test software's and presenting an accurate model according to both analytical solution and artificial neural network for horizontal wells in naturally fractured reservoirs, Petroleum & Coal 64 (2) (2022).

[3] H. Bagheri, et al., Geomechanical model and wellbore stability analysis utilizing acoustic impedance and reflection coefficient in a carbonate reservoir, J. Pet. Explor. Prod. Technol. 11 (11) (2021) 3935-3961.

[4] E. Larki, et al., Feasibility study of underbalanced drilling using geomechanical parameters and finite element method, J. Pet. Explor. Prod. Technol. (2022) 1-20.

[5] M.D. Zoback, Reservoir Geomechanics, Cambridge university press, 2010.

[6] E. Larki, A.H.S. Dehaghani, A.A. Tanha, Investigation of geomechanical characteristics in one of the Iranian oilfields by using vertical seismic profile (VSP) data to predict hydraulic fracturing intervals, Geomechanics and Geophysics for Geo-Energy and Geo-Resources 8 (2) (2022) 1-23.

[7] E. Larki, et al., Investigation of quality factor frequency content in vertical seismic profile for gas reservoirs, Petrol. Res. 6 (1) (2021) 57-65.

[8] M. Rajabi, et al., Subsurface fracture analysis and determination of in-situ stress direction using FMI logs: an example from the Santonian carbonates (Ilam Formation) in the Abadan Plain, Iran, Tectonophysics 492 (1-4) (2010) 192-200.

[9] G. Aghli, et al., Structural and Fracture Analysis Using EMI and FMI Image Log in the Carbonate Asmari Reservoir (Oligo-Miocene), 2014. SW Iran.

[10] M. Ezati, B. Soleimani, M.S. Moazeni, Fracture and horizontal stress analysis of Dalan Formation using FMI image log in one of southwestern Iranian oil wells, J. Tethys 2 (1) (2014), 001-008.

[11] H.H. Jonaghani, et al., Fracture analysis and in situ stress estimation of a gas condensate field in Persian Gulf using FMI and DSI image logs, SN Appl. Sci. 1 (11) (2019) 1-14.

[12] S. Paul, M. Ali, R. Chatterjee, Prediction of compressional wave velocity using regression and neural network modeling and estimation of stress orientation in Bokaro Coalfield, India, Pure Appl. Geophys. 175 (1) (2018) 375-388.

[13] P. Peska, M.D. Zoback, Compressive and tensile failure of inclined well bores and determination of in situ stress and rock strength, J. Geophys. Res. 100 (1995) 12791-12811.

[14] C.A. Barton, et al., Utilizing wellbore image data to determine the complete stress tensor: application to permeability anisotropy and wellbore stability, Log. Anal. 38 (6) (1997).

[15] M. Brudy, M. Zoback, Drilling-induced tensile wall-fractures: implications for determination of in-situ stress orientation and magnitude, Int. J. Rock Mech. Min. Sci. 36 (2) (1999) 191-215.

[16] M. Zoback, et al., Determination of stress orientation and magnitude in deep wells, Int. J. Rock Mech. Min. Sci. 40 (7-8) (2003) 1049-1076.

[17] J. Gao, et al., Initiation of hydraulically or drilling-induced tensile wallfractures from arbitrarily inclined boreholes: implications for constraints in the magnitudes of in-situ stresses, J. Petrol. Sci. Eng. 195 (2020), 107759.

[18] Z. Tang, et al., Wellbore breakout analysis and the maximum horizontal stress determination using the thermo-poroelasticity model, J. Petrol. Sci. Eng. 196 (2021), 107674.

[19] S. Li, C. Purdy,Maximum Horizontal Stress and Wellbore Stability while Drilling: Modeling and Case Study, Scociety of petroleum Engineers, 2010. SP--139280-MS.

[20] B. Haimson, C. Fairhurst, In-situ stress determination at great depth by means of hydraulic fracturing, in: The 11th US Symposium on Rock Mechanics, USRMS), OnePetro, 1969.

[21] B. Haimson, F. Cornet, ISRM suggested methods for rock stress estimationdpart 3: hydraulic fracturing (HF) and/or hydraulic testing of pre-existing fractures (HTPF), Int. J. Rock Mech. Min. Sci. 40 (7-8) (2003) 1011-1020.

[22] H. Kim, et al., Integrated in situ stress estimation by hydraulic fracturing, borehole observations and numerical analysis at the EXP-1 borehole in Pohang, Korea, Rock Mech. Rock Eng. 50 (12) (2017) 3141-3155.

[23] Y. Zhang, J. Zhang, Lithology-dependent minimum horizontal stress and insitu stress estimate, Tectonophysics 703 (2017) 1-8.

[24] L. Xie, K.-B. Min, Hydraulic fracturing initiation and propagation in deep inclined open hole for Enhanced Geothermal System, Geothermics 70 (2017) 351-366.

[25] B.S. Aadnoy, In-sltu stress directions from borehole fracture traces, J. Petrol. Sci. Eng. 4 (2) (1990) 143-153.

[26] M. Gjønnes, et al., Leak-off tests for horizontal stress determination? J. Petrol. Sci. Eng. 20 (1-2) (1998) 63-71.

[27] J. Djurhuus, B. Aadnøy, In situ stress state from inversion of fracturing data from oil wells and borehole image logs, J. Petrol. Sci. Eng. 38 (3-4) (2003) 121-130.

[28] J. Huang, D.V. Griffiths, S.-W. Wong, Initiation pressure,location and orientation of hydraulic fracture, Int. J. Rock Mech. Min. Sci. 49 (2012) 59-67.

[29] K. Thorsen, In situ stress estimation using borehole failures d even for inclined stress tensor, J. Petrol. Sci. Eng. 79 (3-4) (2011) 86-100.

[30] L. Zhang, M. Asce, K.C. Radha, Stability Analysis of Vertical Boreholes Using a Three-Dimensional Hoek-Brown Strength Criterion, GeoFlorida, 2012.

[31] M.R. Zare-Reisabadi, A. Kaffash, S.R. Shadizadeh, Determination of optimal well trajectory during drilling and production based on borehole stability, Int. J. Rock Mech. Min. Sci. 56 (2012) 77-87.

[32] M. Aslannezhad, A.K. manshad, H. Jalalifar, Determination of a safe mud window and analysis of wellbore stability to minimize drilling challenges and non-productive time, J. Pet. Explor. Prod. Technol. 6 (2016) 493-503.

[33] X. Li, K.E. Gray,Wellbore Stability of Deviated Wells in Depleted Reservoir, Scociety of petroleum Engineers, 2015. SP--174860-MS.

[34] M. Mansourizadeh, et al., Wellbore stability analysis and breakout pressure prediction in vertical and deviated boreholes using failure criteria e a case study, J. Petrol. Sci. Eng. 7 (2016) 123-131.

[35] M.T. Hayavi, M. Abdideh, Determination of safe mud pressure window for different well trajectories and stress regimes during drilling operations, Geomechanics for Energy and the Environment 12 (2017) 14-20.

[36] A. Darvishpour, et al., Wellbore stability analysis to determine the safe mud weight window for sandstone layers, Petrol. Explor. Dev. 46 (5) (2019) 1031-1038.

[37] M.A. Aghighi, R. Asgari, Determination of low and high mud weight shear failures at borehole walls using the modified 3-D MohreCoulomb failure criterion, Arabian J. Geosci. 1 (2020) 43-52.

[38] M. Ezati, et al., Wellbore stability analysis using integrated geomechanical modeling: a case study from the Sarvak reservoir in one of the SW Iranian oil fields, Arabian J. Geosci. 13 (149) (2020).

[39] H. Yousefian, et al., Wellbore trajectory optimization of an Iranian oilfield based on mud pressure and failure zone, J. Min. and Environ. 11 (2020) 193-220.

[40] M. Hosseini, N. Behnam, M. Aria, Determination of a safe drilling mud window and optimal drilling mud pressure by shear and tensile failure criteria, Arabian J. Geosci. 13 (649) (2020).

[41] R. Liu, et al., In situ stress analysis in the Yinggehai Basin, northwestern South China Sea: implication for the pore pressure-stress coupling process, Mar. Petrol. Geol. 77 (2016) 341-352.

[42] S. Xu, et al., Complex rotation of maximum horizontal stress in the Wufeng-Longmaxi Shale on the eastern margin of the Sichuan Basin, China: implications for predicting natural fractures, Mar. Petrol. Geol. 109 (2019) 519-529.

[43] R. Liu, et al., Stress heterogeneity in the Changning shale-gas field, southern Sichuan Basin: implications for a hydraulic fracturing strategy, Mar. Petrol. Geol. 132 (2021), 105218.

[44] E. Fjaer, et al., Petroleum Related Rock Mechanics, second ed., Elsevier, 2008.

[45] A.A. Tanha, et al., Investigation of Trend between Porosity and Drilling Parameters in One of the Iranian Undeveloped Major Gas Fields, Petroleum Research, 2022.

[46] G. Zargar, et al., Reservoir rock properties estimation based on conventional and NMR log data using ANN-Cuckoo: a case study in one of super fields in Iran southwest, Petroleum 6 (3) (2020) 304-310.

[47] O. Contreras, et al., A case study for pore pressure prediction in an abnormally sub-pressured western Canada sedimentary basin,in:45th US Rock Mechanics/Geomechanics Symposium, OnePetro, 2011.

[48] J. Zhang, Pore pressure prediction from well logs: methods, modifications, and new approaches, Earth Sci. Rev. 108 (1-2) (2011) 50-63.

[49] M. Azadpour, et al., Pore pressure prediction and modeling using well-logging data in one of the gas fields in south of Iran, J. Petrol. Sci. Eng. 128 (2015) 15-23.

[50] H. Rabia, Well Engineering & Construction, Entrac Consulting Limited London, 2002.

[51] M. Thiercelin, R. Plumb, A core-based prediction of lithologic stress contrasts in east Texas formations, SPE Form. Eval. 9 (4) (1994) 251-258.

[52] J.C. Jaeger, N.G. Cook, R. Zimmerman, Fundamentals of Rock Mechanics, John Wiley & Sons, 2009.

[53] A. Al-Ajmi, Wellbore Stability Analysis Based on a New True-Triaxial Failure Criterion, KTH, 2006.

[54] C. Kirsch, Die theorie der elastizitat und die bedurfnisse der festigkeitslehre, Z. Des. Vereines Dtsch. Ingenieure 42 (1898) 797-807.

[55] A.M. Al-Ajmi, R.W. Zimmerman, Stability analysis of vertical boreholes using the MogieCoulomb failure criterion, Int. J. Rock Mech. Min. Sci. 43 (8) (2006) 1200-1211.

[56] H. Bagheri, R. Falahat, Fracture Permeability Estimation Utilizing Conventional Well Logs and Flow Zone Indicator, Petroleum Research, 2021.

[57] B. Aadnoy, R. Looyeh, Petroleum Rock Mechanics:Drilling Operations and Well Design, Gulf Professional Publishing, 2019.