无储能光-电微网下的抽油机井群间抽混合整数非线性优化方法

A mixed integer nonlinear optimization method for inter well pumping between pumping units in a non energy storage opto electric microgrid

高小永 李晨龙 檀朝东 黄付宇 米思怡 袁宇

GAO Xiaoyong LI Chenlong TAN Chaodong HUANG Fuyu MI Siyi YUAN Yu

中国石油大学(北京)信息科学与工程学院

College of Information Science and Engineering, China University of Petroleum (Beijing), Beijing 102249, China

多数低渗透油藏丛式井因供液不足而采用间抽采油方式，光伏、风电等绿电引入油田生产后在减少碳排放方面发挥了重要作用。为解决人工制定的错峰开井和间抽制度存在的井群运行能耗高等问题，以各抽油机的启停状态和电源频率，以及各光伏机组和高压电网的出力为决策变量，用直流母线实现抽油机组倒发电电能互馈，根据井群生产需求充分考虑源荷端约束，以系统运行成本最低为目标，建立一种无储能环节光-电微网下的错峰开井和间抽运行的混合整数非线性模型，用Gurobi对该问题求解。案例分析结果表明，所建模型求解结果与高压电网供电下井群常开以及人为制定间抽制度比较，井群耗电量分别降低35.687%和15.219%，系统运行成本分别降低35.471%和23.884%，并且相较于后者井群日产量提高21.620%。研究将光伏引入抽油机间抽系统，建立调度模型，大幅降低井群运行能耗和运行成本，凸显了模型的有效性。

For most cluster wells in low-permeability reservoirs, intermittent pumping is adopted due to insufficient liquid supply, and the introduction of green energy such as photovoltaics and wind power is playing a crucial role in reducing carbon emissions in oilfield production. To address issues such as high energy consumption of well clusters running in manually scheduled staggered well opening and intermittent pumping systems, by taking the start-stop status and the power frequency of each pump, as well as the output of each photovoltaic unit and high-voltage power grid as variables for decision, mutual feedback of electrical energy reversely generated from pump units was achieved using DC bus. Taking into account the constraints of the source-load side according to the production demand of the well cluster, a mixed-integer nonlinear model for staggered well opening and intermittent pumping operation in an energy-storage-free “solar-electric” micro power grid was established with the goal of minimizing the system operating cost. And the model can be solved with Gurobi solver. Case analysis results show that compared to constant operation with high-voltage power grid supply and artificially scheduled intermittent pumping systems, the power consumption of the well cluster was reduced by 35.687% and 15.219%, and the system operating costs were reduced by 35.471% and 23.884%, respectively. Moreover, compared to the latter, the daily production of the well cluster increased by 21.620%. The study introduces photovoltaics into the intermittent pumping system and establishes a scheduling model, which significantly reduces well cluster energy consumption and operating costs, highlighting the effectiveness of the model.

10.13639/j.odpt.202311042