Improved Borehole Stability in Shales through Optimized Drilling Fluid Salt Concentration

Effect of Field Caprock Shale Exposure to CO2 on Its Mechanical Properties—A Comparison of Experimental Techniques

“…A series of 5 triaxial tests were conducted, going from unconfined compression strength test (UCS) to consolidated isotropic undrained tests (CIU) at confining stresses of 10 and 15 MPa. The tests were performed using the SMASH triaxial cell (an in-house custom-made cell) at the Formation Physics Laboratory of SINTEF, in Trondheim [17]. This cell is a downscaled version that accepts cylindrical plugs with dimensions of approximately 15 mm in diameter and 30 mm in length.…”

Al2O3 and CuO nanoparticles as promising additives to improve the properties of KCl‐polymer mud: An experimental investigation

“…[ 7 ] Some investigators believe that potassium chloride (KCl) is the optimum choice for shale drilling due to its chemical effects and time dependency. [ 8–10 ] Others adopted different materials such as gelatin, [ 11–13 ] polymers, [ 14,15 ] and solvents [ 16 ] as shale inhibitors with water‐based mud (WBM). Another school of thought believed that oil‐based mud (OBM) is the better way to solve this dilemma wherein a balanced chemical potential is achieved, which precludes a reaction between the shale and mud.…”