CNPC Operations in Sudan
In 1995 the state owned China National Petroleum Corporation (CNPC) bought Block 6. The following year the rights to Blocks 1, 2 and 4 were purchased by the Greater Nile Petroleum Operating Company (GNPOC), a consortium led by CNPC. In 2003 CNPC bought a commanding share in the Petrodar Operating Company (PDOC), thereby also controlling the rights to exploitation across much of Upper Nile.
CNPC's oil and gas businesses in Sudan mainly include the projects of Block 1/2/4, Block 3/7, Block 6, Block 15, the Khartoum Refinery, Khartoum Chemical I Co. Ltd. and the petrochemical trade, covering oil and gas exploration, development, production, storage and transportation, refining and chemicals and sales of refined products. 
CNPC provides technical services in Sudan, including geophysical prospecting, well drilling, logging and formation testing, as well as engineering construction.
CSR Operations in Sudan
Highlights from the CNPC website of their CSR activities in Sudan include: By the end of 2006, CNPC had invested over US$ 30 million in Sudan to support public welfare and over 1.5 million local people have directly benefited as a result. Providing financial support to build the KRC Friendship Hospital, Fula Friendship Hospital, Heglig Hospital and Palouge Friendship Hospital. Investing over US$ 300,000 in building a primary school for the children of its Sudanese employees, which has an area of 1,024 square meters. 
- "Implementing corporate social responsibility in South Sudan" Integrity Research, October 2011.
- "CNPC in Sudan" CNPC official site, Retrieved 7 June 2012.