... Abstract In the context of Carbon Capture and Storage (CCS) site appraisal procedures, the assessment of geomechanical risks associated with injection tests is important. Assessments can calculate injection pressure thresholds and guard against formation fracturing and solids production during...

... with the core permeability with the total high skin which the majority comes from geometrical/limited-entry skin. The productivity index is calculated to be 21 STB/day/psi. There is difficulty to analyze the Injectivity test due to non-isothermal effects during injection and fall-off test where the fluid...

... ABSTRACT A discrete element model for coal which combines simple mechanisms of matrix deformation and discrete fracture network fluid flow has been applied to investigate stress-induced permeability alteration and stress change around a wellbore during a step rate injection test. The model...

.... The objectives of this paper are to investigate the effectiveness of the above two methods and to seek the possibility of developing the tight zone. In K-A, where the acid-fracturing was applied, a laboratory core test as well as intensive field tests such as a step rate injection test, pump in/flow back test...