Research On Development Scheme Of Small Block Reservoir In Jiangnan Oilfield

For onshore oil and gas fields,there are fewer large blocks for the whole assembly,and there are many distribution of small block oil and gas reservoirs.As the whole development of the block is carried out,it is important to study the distribution characteristics of the remaining oil in each small fault block,which is of great significance to improve the development effect of reservoir and improve the recovery of reservoir,and is an important means for improving recovery of oil field.This article selects the jiangnan oil field has 50 years of exploration and development history,the overall recovery rate of less than 30%,the jiangnan 1-8 block is a new found the oil block internal fine reservoir description and the structure of the validation,undeveloped use.The block to the development plan of short cycle quickly built as the goal,strive to quickly build reserves producing degree,directly improve production blocks in order to improve the old oilfield injection-production well pattern and improve the recovery efficiency,the oilfield whole economic efficiency can be improved.Research target block is one of the old oil field small fault block,itself belongs to the results of fine reservoir description.According to the reservoir development history and geological structure features,with the aid of seismic data and drilling and completion data and logging data,the development history of dynamic measurement data,the article has carried out on the structural characteristics of the block,rock characteristics,sedimentary facies and reservoir property of meticulous research,the reservoir space distribution and space in the features and distribution of oil and gas,water and other liquid made a detailed analysis of the block oil geological reserves and the need to focus on next exploration and mining of the horizon also has made the analysis.In this paper,based on reservoir fine description,comprehensive understanding of reservoir and the characteristics of research,to develop a reasonable scheme of geological,include the determination of development principles and development way choice,the determination of well pattern and well density,development speed and development index prediction,etc.Based on the geological and development principles,to further develop the reasonable drilling and completion program,combined with reasonable lifting technology and reservoir renovation process,the step 1-8 block under development for guidance.For similar old oilfield development provides a valuable experience.The jiangnan oilfield development plan is aimed at the typical schemes of measures for comprehensive exploitation and improve oil recovery in old.The project will laid a solid foundation for the sustainable development of the jiangnan oilfield.