The Increasing Reservoir Potential Evaluation In Pu 10-2 Block After Well Drilling

Punan oilfield located in the three grade structure of the southen Daqing Changyuan two level structure of central depression in Songliao Basin——the southward extension of Putaohua structure.the main reservoir is Pu I oil layer of Lower Cretaceous Yaojia Formation.Punan oilfield has 11 blocks,Pu 10-2 block is located in the northern of Punan oilfield,connected with Punan three fault block,it is an important replacement area of increasing yield and oil reservoir evaluation.the statistics of 10 neighboring blocks's development wells,the average single well drilling sandstone thickness 7.3 m,drilled the effective thickness of 3.9m,initial average oil production of single well is 3.9t,oil production strength is 2.0/d.m.The block's drilled wells are Drilling well,top sand group is relative development,but the reservoir is not continuous,rapid lateral variation.At present,there are 3 test wells in the block,reached the industrial oil flow,average oil production of single well 9.8t,water 7.2m3,shows that the block has some additional reservoir potential,But testing well's production is different.Pu 10-2 block completed the acquisition and processing of 3D seismic data with high resolution in 2001,three-dimensional full covering area of 295km2,provided the conditions for improving the-development effect as in the development process of in-depth description of reservoir.In order to further implement the favorable structural trap and reservoir development,this paper collects data from the study area,such as drilled well logging,oil test,logging and dynamic data,combined with 3-D seismic data,using related seismic technology to carry out the structure characteristics,reservoir characteristics,oil-water relationship and further understanding of the reservoir type,delineate the favorable structural trap,predict the distribution of sand body between wells,find the favorable sand body enrichment area and the main oil-bearing formation,divided the oil-water distribution line implementation,make clear the oil-water distribution characteristics and the reservoir type,implement the increasing reservoir potential,and put forward the suggested well,to provide the basis for the submission of proved reserves and oil field development.