"We have completed most of the drilling work and the drilling of additional wells will continue into 2015," Shell China spokesman Shi Jiangtao said in an e-mailed response to questions. "We see that the Sichuan geology is challenging and we are approaching this at the appropriate pace. We continue to evaluate and should know more toward the end of 2014 or first quarter 2015, when we will decide how to move forward with each of the projects."