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Keywords: in-situ stress
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Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0078
... stress Profile lithology in-situ stress small strain stress contrast ABSTRACT: Determination of in-situ stress is important for many engineering applications such as wellbore stability, fracture injection and stimulation, sand production as well as for considering processes of hydrocarbon...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0093
... safe mud weight window azimuth seyedalireza azadeh aghajanpour in-situ stress khatibi case study mechanical earth model 1. INTRODUCTION Many types of drilling events may occur while drilling a well. These may be related to formation failure, drilling- induced fracturing and borehole collapse...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0045
... fluid flow in-situ stress hydraulic fracturing orientation perforation cluster hydraulic fracture fracture propagation interaction ABSTRACT: In this study, a 3D DEM lattice simulator is utilized to model the simultaneous growth and mechanical interference among members of an array of...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0222
... numerical simulation horizontal maximum Reservoir Characterization Engineering maximum principal stress Upstream Oil & Gas tuofutai region principle stress stress value principal stress Petroleum Geology stress field fracture China in-situ stress MPa stress distribution tuofutai area...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0332
... characteristics of in-situ stresses of the rock should also be taken into consideration. The research of evaluation model of rock fracability mainly focuses on shale. Scholars such as Yuan (2013) and Jin (2014) introduce the fracture toughness of shale into the brittleness evaluation and propose the concept of...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0468
... ABSTRACT: In-situ stress measurement is an important subject in the field of rock mechanics. At present, the relief method widely used in engineering is limited to the testing depth, and the testing process is complex. This paper presents a new in-situ stress measuring technique based on the...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0457
... ABSTRACT: Unconsolidated sandstone and soft mudstone formation are generally shallow buried and have special physical and mechanical properties. Under the influence of in-situ stresses, the borehole in unconsolidated sandstone and soft mudstone will be deformed after drilling, resulting in...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0439
... debonding whereas the geographic in-situ stress magnitudes and cement mechanical properties have minimal effect on the stress development. wellbore integrity Upstream Oil & Gas cement interface Wellbore Design formation interface US government deep well rock formation cement sheath...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0427
... distribution of in-situ stresses by automatically adjusting the fields of geomechanical properties as well as boundary conditions with both stochastic and optimization algorithms. This new approach utilizes a sequentially two-step matching procedure taking the difference between calculated stresses and...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1951
... lead to the suggestion that criteria based on Kirsch solutions would be suitable to provide general guidance on in-situ stress and rock strength conditions free of breakouts. FEMDEM models appear well-suited to examine geometries and dimensions that can be sustained by given strengths under deeper in...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-916
... pore pressure stability Instability Problem principal stress wellbore stability Zoback Petroleum Science vertical stress Magnitude orientation geomechanical model mechanical property in-situ stress southern iraq Wellbore Design strength horizontal stress wellbore instability problem...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-039
...-situ stress ABSTRACT: In-situ stresses can play a major role in the stability of large open pits and quarry floors in high-stress regions. Measuring these stresses is often costly and difficult. The flatjack method is a low-cost in-situ stress measurement technique; however, there is potential...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-187
... growth mechanisms for the coupled simulation framework by analyzing the effect of rock properties and in-situ stresses on the fracture length at different injection pressures. Based on these mechanisms, we propose factors that quantify the success of hydraulic fracturing jobs beyond the simplified rock...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-672
... reservoir geomechanics absolute magnitude specimen funato Reservoir Characterization orientation diameter sidewall core drilling operation variation MPa Upstream Oil & Gas borehole smin main hole DCDA stress measurement in-situ stress deformation laboratory experiment...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-792
... Warpinski fracture gradient fracture geometry in-situ stress society of petroleum engineers ABSTRACT: Hydraulically stimulating dense reservoirs to extract O il and G as (O&G) will remain the preferred technology in shale resource development. Fluid is injected into a well and as...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-1267
..., the highest stress is located at the direction of the minimum principal in-situ stress. The circumferential tensile failure of cement sheath owing to the high casing internal pressure occurs firstly at the inner wall of cement sheath. When casing is off-centered in the wells, stress concentration...
Proceedings Papers

Paper presented at the 51st U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2017
Paper Number: ARMA-2017-0747
... cold-water injection crack growth in-situ stress geothermal reservoir displacement thermal stress transient cooling interaction Fluid Dynamics discontinuity element boundary element method penetration permeability injection equation 1. INTRODUCTION Thermal cracking has been regarded as...
Proceedings Papers

Paper presented at the 51st U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2017
Paper Number: ARMA-2017-0877
... pit slopes. While block failure from the contact wall is to be expected as SLR mining progresses to deeper levels, the overall stability of the pit slopes is considered to be dictated by both the hydrogeological regime and the in-situ stress field. In particular the stability of one of the pit walls...
Proceedings Papers

Paper presented at the 51st U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2017
Paper Number: ARMA-2017-0250
... factors thought by most scholars just cause the cross-section of the casing smaller change, which do not block the bridge plugs pumped by elastic coiled tubing; b) influenced by in-situ stress, natural fractures tend to slip when the stress difference is large enough, and slippage is mostly likely to...
Proceedings Papers

Paper presented at the 51st U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2017
Paper Number: ARMA-2017-0416
... paramount importance to predict horizontal in-situ stress changes during production and injection. Most often, it is assumed that a reservoir deforms uniaxially and the overburden stress is constant during production and injection. However, measured stress paths in the lab under these conditions have large...

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