Sulige Gas Production And A Reasonable Work System Optimization

The formulation of gas well reasonable production and the optimization of workingsystem play very important role in improving the recovery efficiency, how to optimizeconfiguration for the reasonable production of gas well, formulate the reasonable workingsystem, extend the production plateau, has become a very important research subject.Sulige gas field is a super-huge type gas field which found in our country, with thecharacteristics of low pressure, low permeability and low abundance. In this paper, firstly,studied the productivity well test data of this gas field as well as the advantages anddisadvantages of various test methods and the using conditions, combining with the actualsituation of Sulige gas field, respectively adopt "one point method", formation coefficientmethod and empirical formula method calculated the deliverability equation of gas well. Thedata through empirical formula method in conformity with the actual data, the accuracy is high,and in the process of calculating, taking a full consideration the restoration situation when theintermittent well shut-in using formation pressure, the deliverability equation is different indifferent production stage, therefore, the ultimate computing method for the deliverabilityequation of Sulige gas field is empirical formula method; secondly, according to the differenttypes of gas well, respectively analyzed the variation characteristics of pressure, thecharacteristics of production capacity, production law and the level of stable production;finally, this article based on the deliverability equation computed by formation coefficientmethod and empirical formula method, determined the gas well open-flow capacity, calculatedthe reasonable production of Sulige gas field which respectively using the mine productionstatistics method, unstable production analytical method, formation and wellbore coordinationproration method, experience proration method and gas recovery instructions curve method,and analyzed the applicability of the above methods, eventually determined the computingmethods for the reasonable production of Sulige gas field are the mine production statisticsmethod, unstable production analytical method and formation and wellbore coordinationproration method.