Example showing pre-test imaging of sample BC3. (a) Orthogonal XCT; (b) XCT image of features XY orientation; (c) XCT image of features XZ orientation; (d) CT image of features YZ orientation; (e) XCT image of fractures XZ orientation; (f) XCT image of fractures YZ orientation; (g) injection face; (h) side view of sample; (I) backpressure face of sample