Improvement And Application Of Comprehensive Parameter Testing Instrument For Water Injection Wells

Since 2008,the oil field began to carry out three times of water injection wells,the workload greatly increased.I plant in 2013 using the hierarchical monitoring technology for19 wells in 58 layers of the long-term dynamic monitoring results show that a testing cycle need to measure and adjust the wells and layers respectively accounted for 62% and 26%,can reveal,measuring and adjusting cycle needs personalized adjustment,in order to ensure the water qualified rate,and to achieve the test the rational allocation of resources transfer.However,due to the small number of monitoring wells,and only a few wells reached 6months,do not have a comprehensive representation.Therefore,in the North West to carry out personalized adjustment of injection wells cycle research,in-depth analysis of the change regularity of dynamic injection wells.The long-term dynamic monitoring project using injection wells multi parameter dynamic monitor of water injection well in the production process of pressure,flow rate and temperature,the long-term monitoring of selected North West water flooding area of 41 wells in 90 layers.The playback function of the instrument is optimized,and the function of "water nozzle wear correction" and "water absorption coefficient curve drawing are added".At the same time,the monitoring result of preliminary statistics,the main affecting factors of water stability: well pattern,layer number,reservoir water injection,reservoir properties and nozzle size,based on the statistical analysis of the monitoring results,identified five main factors measuring and adjusting period,on the basis of this research,the prediction method of measuring and adjusting cycle using genetic algorithm,field verification coincidence rate was 91.8%.This method is used to predict the water injection period of all water injection wells in the west of the north.The results show that the qualified rate of water injection can be improved on the basis of the fact that the measured workload is not increased.The injection well integrated parameter monitor long-term monitoring function of the reservoir absorption situation,initially grasp the factors influencing formation water stability,and make the adjustment period to measure the personalized,reasonable configuration,contribute to the adjustment of resources at the same time,can improve the qualified rate of water injection,water flooding effect,and has broad application prospects the.