论文部分内容阅读
根据正交实验的结果、结垢趋势及结垢类型分析 ,对八种阻垢剂进行了筛选及最佳用量评价。用激光粒度仪对用最佳与最差配比配制的的混合水样在常温 (2 0℃ )和地层温度 (6 0℃ )下分别进行了测定 ,结果两种配比的混合水样的固相浓度、固相粒径等均发生了变化。对两种配比的混合水样在常温和地层温度下及在投加阻垢剂与未投加阻垢剂条件下对储层岩芯的损害进行对比评价。结果表明 :最佳配比的混合水样对岩心的损害较最差配比混合水样小 ;同一种配比的混合水样在常温下对岩心的损害较地层温度下小 ;投加阻垢剂后两种配比的混合水样对岩心的损害均比未投加阻垢剂的小。
According to the results of orthogonal experiment, scaling trend and scale type analysis, eight kinds of scale inhibitors were screened and the best dosage was evaluated. The laser particle size analyzer was used to determine the optimum and minimum ratio of mixed water samples at room temperature (20 ℃) and formation temperature (60 ℃) respectively. The results showed that the two kinds of mixed water samples Phase concentration, solid particle size and so on have changed. Comparisons were made between the two kinds of mixed water samples at normal temperature and formation temperature, and the damage to the reservoir core under the condition of adding scale inhibitor and no scale inhibitor. The results show that the best proportion of mixed water sample damage to the core is worse than the worst mixed water sample; the same mixture of water samples at room temperature damage to the core less than the formation temperature; adding scale inhibitor The mixture ratio of the latter two kinds of mixture of water samples on the core damage than no dosage of scale inhibitor is small.