Volcanic Gas Reservoir Gas Well Deliverability And Description Of Performance Of The Reservoir

The total natural gas proved reserves are 221.759 billion cubic meters in Xushen gas field,the reserves in volcanic rock formation account for 94.8 percent,which becomes the main material basis of Xushen Gas Field.The development of Xushen Gas Field is in early evaluation stage today.For Xushen Gas Field is a volcanic gas reservoir which is put into development for the first time in domestic,it has no mature techniques and experiences in deliverability analysis of gas well,performance prediction of gas reservoir and there are fewer experiences which can be used for reference abroad.For these reasons,the development of Xushen Gas Field has faced many difficulties.Thus,this paper studies volcanic gas reservoir gas well deliverability and description of performance of the reservoir.It has obtained systemic understanding about the deliverability characteristics of gas well and main affecting factors of volcanic gas reservoir of deep zone through the analysis of perforating and producing test,combined with geologic understanding and interior core experiments.It carries on reservoir evaluation from the angel of performance by means of instable build-up test interpretation,production performance analysis and so on,which deepens the understanding to the reservoir shape of flexible area,scale,major parameters and connectivity.It evaluates the scale of well control dynamic reserves.It ascertains rational producing rate,analyses stable yields capability.In addition,it sets up a set of evaluation means of deliverability to volcanic gas reservoir including producing test mode,deliverability assessment,performance prediction,calculation of dynamic reserves,well test interpretation and so on,which provides scientific foundation for deliverability assessment in early stage of gas reservoir development and establishes base to disclosure deliverability features.This paper beats out in main the deliverability features in early stage of the volcanic gas reservoir in Xushen Gas Field of Daqing,which establishes base for the high efficient development of volcanic gas reservoir.The techniques and means of the research provide a use for reference to the deliverability assessment of these types of gas field.