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Keywords: strength
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Proceedings Papers

Paper presented at the International Geomechanics Conference, November 18–20, 2024
Paper Number: ARMA-IGS-2024-0075
... the effectiveness of acid fracturing, while the FCDI accounts for the impact of in-situ stress and rock compressive strength on fracture conductivity. The workflow recommends using acid fracturing when the AFCT is high and the FCDI is low, indicating favorable conditions for acid treatment. Conversely, it suggests...
Proceedings Papers

Paper presented at the International Geomechanics Conference, November 18–20, 2024
Paper Number: ARMA-IGS-2024-0154
... drilling efficiency drilling dysfunction drilling dynamic strength hole enlargement geologist reamer reservoir geomechanics torque higher uc drilling parameter hewd bha International Geomechanics Conference (IGS) ARMA-IGS-2024-154 Impact of Formation Heterogeneity on Efficiency of Hole...
Proceedings Papers

Paper presented at the International Geomechanics Conference, November 18–20, 2024
Paper Number: ARMA-IGS-2024-0205
... problems occur in shale formations (Steiger and Leung, 1992). These problems can be triggered by borehole failure owing to variations in strength properties along and across bedding planes (Tsusaka et al., 2021) and pore pressure changes (van Oort et al., 2019). Understanding the factors affecting wellbore...
Proceedings Papers

Paper presented at the International Geomechanics Conference, November 18–20, 2024
Paper Number: ARMA-IGS-2024-0303
... ABSTRACT: The point load strength index (I s(50) ) is the critical parameter in evaluating the mechanical response of rock. Due to its ease in specimen preparation, this index test becomes even more important for calculating the strength index of layered anisotropic rocks. However, an accurate...
Proceedings Papers

Paper presented at the International Geomechanics Conference, November 18–20, 2024
Paper Number: ARMA-IGS-2024-0387
... properties. The experiments demonstrated that the mean applied stress and flow rate are the most influential factors affecting this transition, followed by material strength, viscosity, and permeability. Further, the use of Support Vector Machine regression analysis validated these findings, achieving R...
Proceedings Papers

Paper presented at the International Geomechanics Conference, November 18–20, 2024
Paper Number: ARMA-IGS-2024-0621
... strength of deep coal in the direction parallel to the bedding is 0.40 MPa, and in vertical bedding direction is 1.21 MPa. In the perpendicular bedding direction, the fractures formed after coal splitting are more complex, indicating that bedding direction has a significant impact on the tensile strength...
Proceedings Papers

Paper presented at the International Geomechanics Conference, November 18–20, 2024
Paper Number: ARMA-IGS-2024-0711
... and true triaxial fracturing experiments were carried out. We found that the mechanical strength of mudstone is significantly higher than that of coal: in terms of the average values, the elastic modulus, uniaxial compressive strength, tensile strength, and fracture toughness of mudstone are 2.65 times...
Proceedings Papers

Paper presented at the International Geomechanics Conference, November 18–20, 2024
Paper Number: ARMA-IGS-2024-0875
... geomechanical challenge horizontal stress proppant permeability wellbore stability reservoir characterization fault reactivation deepwater environment fracture gradient injection strength International Geomechanics Conference (IGS) ARMA-IGS-2024 875 Technologies to mitigate Geomechanical...
Proceedings Papers

Paper presented at the International Geomechanics Conference, November 18–20, 2024
Paper Number: ARMA-IGS-2024-0803
... the operating efficiency of the fan under the premise of ensuring low noise and structural safety of the fan. Mainly from the blade design, hub structure design and overall structural strength calculation and analysis. Firstly, in the aspect of blade design, the fifth generation bending-swept orthogonal three...
Proceedings Papers

Paper presented at the International Geomechanics Conference, November 18–20, 2024
Paper Number: ARMA-IGS-2024-0321
... Abstract: To determine if the size of a cemented mill tailings sample affects its unconfined compressive strength (UCS), researchers with the National Institute for Occupational Safety and Health (NIOSH) conducted three series of UCS tests with cylindrical samples of cemented paste backfill...
Proceedings Papers

Paper presented at the International Geomechanics Symposium, October 30–November 2, 2023
Paper Number: ARMA-IGS-2023-0137
... material in CPB applications. CPB samples were prepared with different dosages of BF (0.5%, 0.75%, and 1%) using two different fiber lengths (12-mm and 18-mm). CPB samples were tested for unconfined compressive strength (UCS) after 7, 14, and 28 days of curing. The findings show that BF can improve UCS...
Proceedings Papers

Paper presented at the International Geomechanics Symposium, October 30–November 2, 2023
Paper Number: ARMA-IGS-2023-0259
... is prohibited. Permission to reproduce in print is restricted to an abstract of not more than 200 words; illustrations may not be copied. The abstract must contain conspicuous acknowledgement of where and by whom the paper was presented. ABSTRACT: This paper investigates the degradation of tensile strength...
Proceedings Papers

Paper presented at the International Geomechanics Symposium, October 30–November 2, 2023
Paper Number: ARMA-IGS-2023-0018
.... The effective stress in the formation is altered due to changes in the load- bearing part of the matrix. The effective net stress that controls deformation is given by: = 1 Where is defined as the magnitude of the effective stress. = 2 + + 2 sin =0 Where c and are cohesion strength and internal friction...
Proceedings Papers

Paper presented at the International Geomechanics Symposium, October 30–November 2, 2023
Paper Number: ARMA-IGS-2023-0326
... pressures and strong heterogeneity, focusing on rock strength, natural fracture density, and reservoir permeability. Results indicate that the fracturing fluid filtration coefficients of the rock matrix in target layer are very small in the range of 10 -5 m/s 1/2 , which makes a low permeable formation. G...
Proceedings Papers

Paper presented at the International Geomechanics Symposium, October 30–November 2, 2023
Paper Number: ARMA-IGS-2023-0130
... by the production of hydrocarbons, leading to the production of sand along with oil and gas (Ahad, 2020). The onset of sand production can be predicted using the following equation: = (2 3 Where: = the pressure required to initiate sand production = the tensile strength of the rock formation = the uniaxial...
Proceedings Papers

Paper presented at the International Geomechanics Symposium, October 30–November 2, 2023
Paper Number: ARMA-IGS-2023-0058
... , is often used to evaluate the development of rock fractures, kv = Vp Vc 2 (1) where Vp denotes the longitudinal wave velocity in the rock mass, Vc is the longitudinal wave velocity in intact rocks, and kv varies from 0 to 1. From the rock mass integrity coefficient, the strength of rock mass...

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