Low Permeability Thin Carbonate Gas Reservoir Horizontal Well Optimization Design Research

Horizontal well technology is the development of low permeability oil and gas reservoir is an effective way, Can greatly improve the comprehensive economic benefit of exploration and development. As a result of horizontal well horizontal segment can be implemented in parallel through reservoir, It can effectively increase the production well and formation of the contact area, reduces the production pressure difference, improve the production well productivity. Therefore, horizontal well technology for low permeability gas reservoir development, at the same time, horizontal well technology can lower the production pressure difference under vertical wells can not achieve economic yield.With the growth in demand for natural gas in China and the" west to East Gas Pipeline Project" successful operation, Using horizontal well to exploit low permeability gas reservoir has become an unavoidable problem. Therefore, for horizontal wells in low permeability gas reservoirs research, has become an urgent need to resolve an important issue.Jingbian gas field carbonate gas reservoir belongs to typical stratigraphic and lithologic gas reservoir with low permeability, low abundance, strong heterogeneity, and other characteristics, and the erosion groove development, local small scale structure is complex, the main characteristics of reservoir thickness. This thesis focuses on the Jingbian Gasfield geological characteristics through the stratigraphic division and correlation, reservoir physical property analysis, comprehensive evaluation of Jingbian reservoir, horizontal well location for later optimization design with basic geological guarantee.Through the fine reservoir description, based on the analysis of the effect of drilled horizontal well of Jingbian gas field, the evaluation for thin carbonate reservoir development by horizontal wells adaptability, And put forward the development countermeasure of Jingbian gas field horizontal well, while the Jingbian gas field horizontal well location optimization principle of optimality conditions, optimization method and technology and horizontal well design and system research. Through horizontal well zone fine geological modeling, optimization of horizontal well location, Considering the geological condition and economic benefits at the same time determined with horizontal well length, Finally, using a variety of methods of target-entering point to optimize the design and puts forward the exact target method and technology and horizontal well design and system research. Through horizontalwell zone fine geological modeling, optimization of horizontal well location, Considering thegeological condition and economic benefits at the same time determined with horizontal welllength, Finally, using a variety of methods of target-entering point to optimize the design andputs forward the exact target control method of horizontal well.