Gas Well Hydraulic Optimizational Design And Software Development

With the adjustment of energy sources structure and fast development of urban fuel gas industry, the proportion of natural gas production in energy sources production is increasing fast. In recent years, the built of the Shaanxi-Beijing line, Shibuya Cymbidium line, West-East Gas Pipeline, Zhongwu lines, and long-distance gas pipeline accelerate the pace of domestic natural gas production. Natural gas wells optimization of the system for design have important practical significance for the rational development of natural gas and the level of management, Unlike oilwells, natural gas wells manifest mainly in the area of naturalgas compressibility. As natural gas can easily be compressed, the yield curve is not linear changes and in the shaft the flow pattern has been different from the single-phase liquid flow.Natural gas wells in the production process, often accompanied by formation water outputs, then it showed the gas, liquid two-phase flow, and the determination of its flow parameters and the flow pattern becomes more complicated.Along the wellbore flow direction, temperature is gradually reduced, and under certain conditions will be gas hydrate formation, which has seriously affected the normal production of natural gas. For this reason, the reasonable determination of natural gas hydrate formation conditions is very important for its forecast of gas hydrate formation depth. According to the establishment and solving relevant for calculating the properties of the model, it gives the gas well production, natural gas compressibility factor, the temperature distribution along the wellbore and pressure distribution along the shaft. Based on the temperature distribution along the shaft, the natural gas hydrate formation depth of calculation model is further given.Making natural gas from the bottom gas layer and wellbore to ground as a complete system, using nodal system analysis method and using C++Builder senior programming language, author develops gas wells hydraulic design optimization software.Making use of this software, the author calculates and compares the test dates of Kuihua-19 well in Liaohe Oilfield. The results show that this software has better suitability...