The Research On Natural Gas Potential Evaluation Of Heidimiao Oil Layer In Changyuan Southern Oil Fields

Putaohua And Aobaota oil field is located in Putaohua and Aobaota structure of the south of daqing placanticline.Heidimiao layer is developmental in nenjiang group development of three to four period of strata,which is upper oil combination of Songliao basin and whose buried less than 700m,for shallow gas reservoir types.Puqian 701 well and Puqian7 were put into production In July 1991.By August 2000,the two wells had produced nearly 20 million cubic meters of natural gas.Selection of 194-16 wells,portugal 268-66 well,ao portuguese 196-18 well and portuguese 198-184 mouth well try old well.Qiaoying left gas,natural gas is in 40000 everyday,show that Heidimiao layer has huge potential for natural gas.This article comprehensively use of 3d seismic,geology,logging,core and previous research results data,based on 3d material prestack processing,we have done research into current tectonic characteristics and paleostructure characteristics and structural history and fracture feature of Heidimiao layer of the south of daqing placanticline analyzing structure have influence on natural gas shipped together and save,developing the character of research of sedimentary facies sandbody exhibition,Analysing of the geological conditions of the shallow gas storage;Through the oil and gas water recognition mode and AVO hydrocarbon detection,making clear regularity of distribution of the oil and gas water;Developing the cover of block ability evaluation;Analysing of shallow gas saved geological conditions;Comprehensive above research,developing comprehensive evaluation of Heidimiao layer and picking out favorable block and evaluating the potential of natural gas.Based on this,having well deployment of test-well.Through this research,perfect and deepen geology cognition of Heidimiao layer of the south of daqing placanticline,present favorable development goals and well suggestions,Through the opening experimental gas production,make up for the lack of natural gas production situation of seven factory area winter,have important strategic significance on the sustainable development of oil field.