The collaboration agreement will provide CNPC Logging with a license to manufacture fit-for-basin wireline technology. As part of the agreement, Schlumberger will support CNPC Logging on the manufacturing and sustaining activities for ThruBit through-the-bit logging technology at the CNPC Logging technology centre in Xi'an, Shaanxi province.

"We are very pleased to continue evolving our relationship with CNPC Logging through this new technology access model, starting with ThruBit—one of our differentiated wireline technologies. This technology will enable CNPC Logging to significantly improve their logging capabilities in horizontal and vertical wells across all China basins," said Djamel Idri, Wireline president, Schlumberger.

"We look forward to continue working together with CNPC Logging to enhance value creation and performance through advanced wireline technologies."

Li Jianhao, president, CNPC Logging, added: "CNPC Logging and Schlumberger have entered into an agreement to begin the co-manufacture of ThruBit logging tools marking a historic milestone in the relationship between the two companies.

"With the growing number of horizontal wells undertaken by CNPC each year, the ThruBit platform has become essential to our reservoir evaluation strategy. In today's low oil price environment, this partnership is more important than ever and this new business model will help us to achieve mutual benefits. I look forward to strengthening the collaboration between our management and technical teams, to continue delivering high-quality products in order to keep improving the efficiency and performance of the CNPC oilfields."