Production Evaluation Of Fracturing Horizontal Wells For Solution Gas Drive In Tight Oil Reservoirs

Tight oil and gas reservoirs have great development prospects in the world,and tight oil and gas reservoir resources are the most realistic field of unconventional oil resources.With the continuous improvement of technology innovation,engineering geological understanding and management,China’s oil industry will continue to develop rapidly in the direction of the tight reservoir,making a significant contribution to the protection of national oil and gas energy security.Firstly,according to different sources of energy contribution,this paper divides the development of horizontal Wells in the tight reservoirs.The elastic energy exploitation of tight reservoirs with the horizontal well development can be divided into fracturing fluid energy contribution,rock and fluid elastic energy contribution and dissolved gas energy contribution.Then,according to single well liquid-producing capacity,the decrease of production and water injection effect,the dynamic producing model can be divided into: remain stable and high yield rapid decline.Secondly,the production calculation model is established for the development and dissolution gas drive stage of the volume fracturing horizontal well of the elastic energy in tight reservoirs.The production calculation model is a nonlinear second order partial differential equations,using Boltzmann transformation equation can simplify the calculation process.Using the iterative calculation can calculate the production.Finally,calculate the oil production of the typical tight oil reservoir in CQ oil fields.The production calculation model is used to calculate the production capacity,and analyze the production factors.The research of this paper has some guiding significance for the development of tight oil reservoirs.