Reservoir flow unit division of Ma 51+2 submember in Zhidan area of Yan'an gas field
In order to stabilize the production capacity,it is necessary to define the reservoir flow unit of the Ma 51+2 submember,which provides the basis for the adjustment of well location.According to the similarity degree of gas components,the flow units are divided according to the cluster analysis of gas component data of different paleogeomorphic units in the study area.At the same time,the gas well deflating radius is determined by using the modern production decline analysis method of historical production data.The results show that the 11 palaeo-geomorphic geological units in the study area are divided into 45 flow units,and the reservoir flow units divided by gas components are predictable.The average single well drainage radius of the Ma 51+2 submember is 420 m.At present,only some gas Wells in each flow unit have inter-well interference,and the area where the gas well drain-age radius does not coincide in the same flow unit is used as the subsequent infusing deployment area.It provides the basis for stable production of gas field.
Yan'an gas fieldZhidanMa 51+2 subzonecluster analysisflow unit
NETL
NSTL
万方数据
