油气地质与采收率2026，Vol.33Issue(3)：113-120,8.DOI:10.13673/j.pgre.202511029
基于油嘴参数优化的提升济阳页岩油单井EUR方法
Method for enhancing single well EUR of Jiyang shale oil based on choke parameter optimization
摘要
Abstract
The production decline behavior of oil wells is significantly influenced by choke regulation,where rational choke parameter optimization is the key to enhancing estimated ultimate recovery(EUR).This study focused on Jiyang shale oil wells.Based on the regulatory effect of choke adjustments on production dynamics,a segmented production decline model incorporating choke adjustments was established.The particle swarm optimization(PSO)algorithm was employed to optimize choke parameters,and a scientific production control strategy aimed at maximizing EUR was proposed.Firstly,by analyzing the production characteristics of Jiyang shale oil wells,it was found that staged choke diameter adjustments transformed the traditional"L-shaped"decline into a"step-like"decline pattern.A segmented production decline model based on choke adjustments was constructed.This model integrated the Arps decline theory,significantly improving oil production prediction accuracy by segmentally fitting initial production,decline exponents,and decline rates under different choke diameters.Compared to the conventional single-segment Arps model,the average relative error decreased from 10.46%to 5.57%.Secondly,based on the segmented decline model,a multi-stage superposition method for EUR calculation was proposed.By considering the economic limit rate and the cumulative contribution from each choke stage,this method yielded more reliable EUR predictions.Finally,with the goal of maximizing EUR,the PSO algorithm was used to optimize the choke diameter and production time.The results demonstrate that this approach outperforms both single decline models and combined models in shale oil well production forecasting,exhibiting optimal accuracy and stability,with the most reasonable EUR predictions and the lowest error(<8%).A rational choke adjustment strategy can increase single-well EUR by 6.44%-10.51%while effectively delaying production decline.关键词
济阳页岩油/油嘴调整/产油量递减/EUR/优化策略Key words
Jiyang shale oil/choke adjustment/production decline/EUR/optimization strategy分类
能源科技引用本文复制引用
翟亮,王滨,樊冬艳,彭国红,赖思岑,刘昌鸣..基于油嘴参数优化的提升济阳页岩油单井EUR方法[J].油气地质与采收率,2026,33(3):113-120,8.基金项目
山东省自然科学杰出青年基金项目"非常规油气藏多尺度渗流理论"(ZR2022JQ23). （ZR2022JQ23）
