Zhongyuan Oil Field

The oil region stretches across Henan, Shandong two province 6 city and 12 counties (area), was found in 1975. The main exploration & development area is Dongpu depression and Sichuan northeast Puguang gas field. It has maintained an annual output of about 4 million tons.

By the end of 2008, the accumulative proved oil bearing area is 455.35 km2, gas bearing area is 149.07 km2. Proved oil geologic reserves are 567 million tons, and condensate geologic reserves are 7.9738 million tons. Proved gas geologic reserves of gas reservoir are 61.577 billion m3, and solution gas geologic reserves are 69.201 billion m3. The producing geological reserves of oil are 531 million tons, the producing geologic reserves of gas are 106.1 billion m3, and the accumulative produced crude oil and natural gas is 150.5 million tons, 39.653 billion m3 respectively.

In 2008, the incremental proved oil and gas geologic reserves are 12.22 million tons, the oil output is 3003 thousand tons, the gas output is 1.06 billion m3. The crude oil produced mainly is transported to Luoyang petroleum & chemical plant. Natural gas produced is used as important industrial/civilian material or fuel, mainly is  supplied for more than 20 state-owned corporations and some villages and towns as industrial material, and supplied for more than 14 cities like Zhengzhou, Kaifeng, Jinan etc. as civilian fuel.

In recent years, the oil field adjusted the exploration mentality positively, the old area takes increasing the high quality reserves as the goal, the newly developed area takes discovering and the breakthrough as a key point. They have implemented project management, have taken exploration and development as a whole in operation, have emphasized the accurateness and profit during exploration,so that has formed the good working mechanism . Continuously three year every year Zhongyuan oilfield has increased the proving petroleum geological reserves above 10 million tons, has increased natural gas geological reserves above 1 billion m3 . The exploration success ratio has increased from 47% to 63%, the producing reserves ratio has increased from 54% to 90% , so the oil-gas exploration quality and the benefit enhance  steady .

Regarding enhancing the producing reserves degree and the recovery ratio, the managers comprehensively promote reservoir management and operation. They have taken progressive reservoir appraisal and productivity construction as a whole in operation, have strengthened fine adjustment of the oil and gas reservoir. Through strengthened research, fine injection, fine tapping latent potentialities, the productivity of new areas and condition of old areas have improved a lot.Natural decline rate in Zhongyuan oilfield has decreased from 23.7% to 17.2% , reserves replacement rate has increased from 77% to 100% , The composite water cut and the reservoir pressure maintain stable, the recoverable reserves growth with stability, the stable production foundation strengthens, the development condition is being progressive improvement, the oil & gas principal work maintains continuous  and effective development.