Research On Comprehensive Management Technique Of Low Production, Low Efficiency Wells

Putaohua oil layer of East the Daqing oil field periphery belongs lowly infiltrates, lowly produces, low abundance. It is also called "three low" oil deposit. That has created many prominent problem in the performance history, because of the objective geological characteristic in the "three low" oil deposit. Along with the development time extension, the partial wells start the low efficiency and the non-benefit production, the liberated area block measure potential slightly is limited, the chooses of the well and the layer becomes more and more difficult. New production sub-area thickness is more and more thin, the reserves abundance is more and more low, the oil layer nature year by year the variations. Thus caused to produce the low efficiency well to increase year by year lowly, has become the important attribute which the restriction oil-field development overall benefit enhanced.This paper is based on the instance investigation foundation, unifies my factory the actual situation, was clear about has produced the low efficiency well lowly the definition, and to produced the low efficiency well to carry on the careful classification lowly. From the surplus recoverable resources, standpoint of sandstone maturity, reservoir heterogeneity and the lateral inconsistency, the paper has analysis the reason and studied the management techniques of different kinds of low production, low efficiency wells. Further more, the paper has put forward the technical countermeasure of'based on the injection adjustment. Combination of changing the production wells into injection wells, adjustment, fracturing, water plugging, bailing and shut in to enhance the reservoir potential and economic profits substantially. Through setting up of the economical evaluation modeling, and from three aspects, which include production method limit, measurement profit limit and profit maximum, to discuss the low production, low efficiency wells economical countermeasure of comprehensive management. Economical evaluation has been studied for different management techniques and the profit limit has been defined to guide the management of in situ low production, low efficiency wells effectively.