基于随机森林的水井酸化措施推荐  

Recommended Acidification Measures for Water Wells Based on Random Forests

作　　者：彭红涛 田迪 钱黎庆 李志勇 刘科飞 Peng Hongtao;Tian Di;Qian Liqing;Li Zhiyong;Liu Kefei(CNOOC Energy Development Co.,Ltd.Engineering Technology Compan,Tianjin 300457,China)

机构地区：[1]中海油能源发展股份有限公司工程技术分公司,天津300457

出　　处：《现代工业经济和信息化》2025年第3期128-131,共4页Modern Industrial Economy and Informationization

摘　　要：注水开发是提高海上油田采收率的重要举措,但海上油田开发到后期,由于注入水水质及地层变化,导致地层堵塞、地层吸水能力下降,直接影响海上油田正常注水生产。目前最常用的措施是通过水井酸化增注解除井底堵塞物,提高地层有效渗透率,恢复地层吸水能力。通过引入多种深度学习算法结合油藏地质及开发生产知识建立水井酸化措施模型,再将水井酸化模型效果结合措施相关性及进行评价和分析,从多种模型中优选出最符合中后期油田注水井酸化措施推荐的模型。目前该方法已在渤海Q油田成功应用,酸化效果明显,实施后地层吸水能力有所上升,注入压力由酸化前9 MPa下降至6 MPa,注入量由酸化前3800 m^(3)上升至5250 m^(3),满足油田配注量要求。该方法为海上油田水井酸化选井提供了依据,助力渤海智能油田建设。Water injection development is an important measure to improve the recovery rate of offshore oil fields.However,in the later stage of offshore oil field development,due to changes in the quality of injected water and formation,formation blockage and decreased water absorption capacity directly affect the normal water injection production of offshore oil fields.The most commonly used measure at present is to remove bottomhole blockages through acidizing and increasing injection in water wells,improve the effective permeability of the formation,and restore the water absorption capacity of the formation.This article establishes a water well acidification measure model by introducing various deep learning algorithms combined with reservoir geology and development production knowledge.Then,the effectiveness of the water well acidification model is evaluated and analyzed in combination with the relevance of the measures,and the most suitable model for recommending the acidification measures of oilfield injection wells in the middle and later stages is selected from multiple models.At present,this method has been successfully applied in Bohai Q oilfield,with obvious acidification effect.After implementation,the water absorption capacity of the formation has increased,the injection pressure has decreased from 9 MPa before acidification to 6 MPa,and the injection volume has increased from 3800 cubic meters before acidification to 5250 cubic meters,meeting the requirements of oilfield injection allocation.This method provides a basis for acidizing and selecting wells in offshore oil fields,and assists in the construction of intelligent oil fields in Bohai.

关 键 词：深度学习 注水井 酸化措施 智能油田 

分 类 号：TE19[石油与天然气工程—油气勘探]