Karamkas油田抽油机井挖潜设计

Design of Potential Tapping for Rod Pumping Wells in Karamkas Oilfield

摘要: Karamkas油田油井供液能力强，挖潜空间大，目前的工作制度无法充分发挥油井的供液能力。将产液量看作冲程、冲次、泵径、下泵深度的函数，建立以产液量最大为目标的优化模型。根据现场设备的工作参数，该模型的解集是有限的。利用节点分析原理，计算每一种工作制度对应的产液量、悬点载荷、泵效等，然后选择最优方案。根据Karamkas油田的特点，通过动态控制图分析，并考虑采液指数和含水率，建立抽油机井挖潜选井原则。最后选择该油田22口潜力井进行设计，现场实践证明，设计结果合理可行。

Abstract: The liquid-supply capacity was high of oil wells and space for potential tapping was sufficient in Karamkas Oilfield. The current production system could not give a full play to the liquid-supply ability of the wells. The liquid production rate was taken as a function of stroke, rate of pump, pump diameter and depth of plunger, and the optimization model was built to maximize the pro-duction. According to the field equipment operational parameters, the solution set of model was finite. The theory of nodal analysis was used to calculate corresponding liquid producing rate, load on polished rod and pump efficiency of every working system, and then the optimal decision was selected. According to the characteristics of Karamkas Oilfield and by analyzing the dynamic control chart, the principle for well selection by tapping potential is established in consideration of the liquid production index and water cut. Eventually 22 potential wells are chosen in the oilfield for production design. The practice result shows that the design is reasonable and feasible.