The oil-gas conductor is the key part that connects subsea facilities and offshore equipment. The installation, construction and the stability control in subsequent operation of the conductor are main technical problems in the field of offshore oil and gas engineering. The book focuses on installation of oil and gas conductor in the offshore oil field. It includes three parts. The first part introduces the main installations and structural features of the wellhead above water and the wellhead under water. Then, it summarizes methods and theories of oil and gas conductor design. Finally, the differences in the construction techniques and supporting equipment of the three oil and gas well conductor installation methods are systematically described. This book contains a complete set of equipment, construction process and design methods for oil and gas conductor installation with multidisciplinary knowledge of geotechnical engineering, civil engineering, and structural dynamics. Scientific researchers and college students engaged in marine oil and gas engineering, petroleum engineering, marine engineering will find this book as a valuable reference.