china national logging corporation (cnlc), was established by china national petroleum corporation (cnpc) in 1995 with the world-wide provision of well-bore technical services of internationally accepted quality and standards levels as its specific purpose. since its establishment, cnlc has not only been providing integrated well-bore services to china's petroleum industry, but has also progressively developed into a service company of international standing, having extended its business operations to a number of countries, such as the sudan, iran, egypt, tanzania, venezuela, kazakhstan, myanmar, pakistan, bangladesh, and azerbaijan.