Study On Geological Characteristics And Deep Driven Drive Technique Of

In this paper,the geologic characteristics of the well area are studied,and the geological characteristics of the well area are studied.The existing drilling,logging,logging,earthquake and production data are used to carry out the structure,reservoir,Distribution law and other comprehensive geological research,found that the main problems restricting the development of reservoirs.Chennai 1 is a highly efficient waterflooding development block,is currently in the late stage of waterflooding development,the reservoir moisture content is high,at the same time by the block oil layer,interlayer layer heterogeneity strong,crude oil viscosity and other reservoir It is difficult to improve the recovery rate of reservoirs by conventional waterflooding,and it is difficult to improve the recovery rate of the block.In order to find a kind of oil recovery technology which is suitable for the characteristics of the reservoir,Production decline,ease the contradiction between reservoir development,oil field development to provide theoretical guidance and program design.The main achievements and achievements of this thesis are as follows:(1)Using the more stable contrast marker layer,the upper and lower strata of the nine main groups of the nine main groups are divided into six reservoirs and 14 sandstone groups.(2)the development of the fault,the main development of a group of North East to the normal fault and a group of north-south positive fault.The northeastern fault and the north-south fault are cut with each other,and the oil and gas migration channel is formed in the early stage,and the oil and gas are well sealed.Fractures and tectonics are characterized by long-term activities and strong inheritance.The tectonic morphology and fracture characteristics of each reflective layer are basically the same,and half of the anticline is formed in the early stage,and the fault is cut into four fault-breaking and fault-block structures.(3)Based on the comprehensive sedimentary background and sedimentary facies,the fan delta sedimentary model and microfacies of the block are established,and the sedimentary facies plan is made up with the reservoir group as the unit and the sedimentary evolution is analyzed.(4)The sand body development and the plane distribution characteristics of the reservoir group are studied.Chennai 1 block Jiufo group on the next two sections of the reservoir development,the thickness of the plane on the Chennai 1-60-46 the best,large area.Followed by Chennai 1-48-38 block,Chennai 1-68-32 block and Chennai 1-42-26 block.The generalcharacteristics of the block high part of the oil layer thickness,to the lower part of the gradual thinning.In the longitudinal stage,the reservoirs of ? and ? were the most developed,followed by ? oil group and ? group,The main factors controlling the distribution of oil and water are tectonic,sedimentary facies and so on,and the reservoir type is stratigraphic water-tectonic reservoir.Based on the analysis of the characteristics of Naiman oilfield,combined with the results of deep profile control experiment,the type of deep profile control system of the oil field was determined.The recommended system was: 0.2% P2000 + 0.2% JL(5)-5,blocking efficiency of 99.96%,can improve the recovery rate of 14.34%.The experimental results show that the design of the deep drive system has good adaptability to the deep drive test area of Naiman Oilfield.