The volcanic gas reservoirs in Block Shengshen 2-1 of Xushen Gasfield are characterized by strong heterogeneity and well-developed bottom water, so the rather difficult development is resulted for the gas reservoir. Through four-year development practice, the following four understandings are obtained in the productivity characteristics , reservoir connectivity and so on: the analyses on the production characteristics of the gas wells show that these wells can be divided into two kinds桾ype I and Type M , the former is the main form; the block is featured by the unified pressure system, the reservoirs possess much better connectivity; the marginal wells are broken through by formation water, mainly displaying as fracture-type water; by adopting many production-allocating methods and integrating with the current productivity of the gas wells, the rational work system of the gas wells -is researched and determined at last. Thus the evidence for the reasonable development of the gas field is provided. In the course of the later development of the gas field, the attention of control on the production pressure difference should be specially paid, the reasonable gas production rate also should be sustained, and moreover the rapid coning by bottom water should be prevented as well, so that the influences on the development results of the gas field cannot be occurred.%徐深气田升深2-1区块火山岩气藏非均质性强,发育底水,给气藏的开发带来较大困难.通过4 a开发实践,在产能特征、储层连通性等方面取得了4点认识:通过气井生产特征分析表明,气井可以划分为I、Ⅲ类,以I类井为主；区块具有统一的压力系统,储层连通性较好；边部井见地层水,主要表现为裂缝型水窜出水；采用多种配产方法,结合目前气井产能情况,研究并确定气井合理工作制度,为气田合理开发提供了依据.气田在以后开采过程中要特别注意控制生产压差,保持合理的采气速度,防止底水快速锥进,影响气田的开发效果.
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