Horizontal Wells In Sulige Gas Field To Improve Oil Recovery Of Quantitative Research

Sulige Gas field in China is a tight sandstone gas field.which is a typical representative.At present Sulige Gas field is one of the biggest field of reserves and production in our country.Because of that gas area is too large, and low abundance, strong heterogeneity characteristic,Inthe vertical Wells that have been put into operation,we have found the single well productionis low, pressure drop quickly, The output of gas well in the early stages of decline quickly inthe past years, which couldn’t maintain a long-term and stable yield. On the condition of thereservoir characteristics, by taking horizontal well technology to realize stable recovery timeand achieve expected. This thesis mainly quantitative research horizontal well improve oilrecovery following two aspects: One is the single well controlled reserves study of horizontalWells, the results of gas geology research and reservoir description in the quantitative change,including the structure model, the facies model and property model of horizontal single wellgeological model; The other is that how many studies horizontal well with vertical Wells canimprove recovery factor, and selecting typical area Sue6area for stochastic modeling, basedon the numerical model is established for different types of well type distribution pattern in themodel, and the recovery of a specific evaluation of different well types. Through the twoquantitative research of this thesis. Built to scale and maintain long-term stable capacity,Sulige Gas field need a lot of wells and the construction of a productivity capacity to replacewell.To reduce the number of development well and the management work, improve theefficiency of the development, the need to develop the technology of horizontal well. Thispaper provide reliable basis for accurate evaluation of gas field horizontal well improverecovery factor.