Gathering And Processing System Optimization Reconstruction Of PuCheng Oil Field

PuCheng oil field is one of the most important oil regions of ZhongYuan oil field. It was developed in 1987 and the water cut increased to 85% in 1999. As entered into the high water-cut stage, the oil and gas gathering and processing system efficiency became lower because of the increasing production stream. Aimed to decrease the energy consumption and raise the benefit, the paper proposes the optimization reconstructions based on the model of the PuCheng reservoir business administration.According to the gathering arrangement and the reservoir business administration of PuCheng oil field, the paper calculates the pipe network from branches to main pipes adopting DuklerII algorithm. Based on those calculations, the low efficiency pipes were found out and the optimization reconstruction methods of altering pipe diameter, insulating layer thickness and improving heating furnace efficiency etc to reconstruct the network of pipelines were suggested. After the optimization reconstruction, the efficiency of the whole system can be improved by 4.5%.Based on the theory of energy balance, the models of the equipments in multi-purpose station were established and the energy consumption to the equipments was analysed. Then the high energy consumption, low efficiency equipments were found out. The reconstruction measures are as follows: (1) Turn PuI and PuII multi-purpose stations into transfer stations. (2) The oil with high water cut is processed in PuIII multi-purpose station. After the reconstructions the processing efficiency can be improved by 1.4%. Besides, the parameters of the oil lines from PuII to PuI, PuI to PuIII such as pipe diameter, insulating layer thickness etc were also optimizated.Ater the the optimization reconstructions of PuCheng oil and gas gathering and processing system, the whole system efficiency is improved by 2.9% and theory reference to the reconstructions was provided.