The offshore drilling rig operations in this series two is a book that covers offshore subsea drilling and completions of good operations, the processes of drilling, the various types of drilling rigs and the facilities involved. The pros and cons of the offshore program are listed, as well as the significance of the circulatory fluid medium which takes care of cuttings and drilling wastes generated, and how these wastes are disposed of. Wastewaters or liquid wastes, atmospheric emissions and solid waste were discussed. This volume II covers chapters three to eleven.