含油污泥颗粒堵剂在油藏孔隙中运移性能研究  

Study on the Migration Performance of Oily Sludge Particle Plugging Agent in Reservoir Pores

作　　者：杨洪军 代超 张丹丹 王多田 吕明军 于春涛 魏巍[6] 唐宇 Yang Hongjun;Dai Chao;Zhang Dandan;Wang Duotian;Lyu Mingjun;Yu Chuntao;Wei Wei;Tang Yu(Jilin Oilfield Branch Fire Brigade;Jilin Oilfield Branch Carbon Dioxide Company;Jilin Oilfield Branch New Energy Business Department;Jilin Oilfield Branch HSE Supervision Station;Jilin Oilfield Branch Oil and Gas Engineering Research Institute;Jilin Oilfield Branch Xinmin Oil Production Plant;Jilin Oilfield Branch Quality,Safety and Environmental Protection Department)

机构地区：[1]中国石油吉林油田分公司消防支队 [2]中国石油吉林油田分公司二氧化碳开发公司 [3]中国石油吉林油田分公司新能源事业部 [4]中国石油吉林油田分公司HSE监督站 [5]中国石油吉林油田分公司油气工艺研究院 [6]中国石油吉林油田分公司新民采油厂 [7]中国石油吉林油田分公司质量安全环保处

出　　处：《油气田环境保护》2024年第1期36-40,共5页Environmental Protection of Oil & Gas Fields

摘　　要：针对含油污泥颗粒的特征,探索含油污泥颗粒堵剂在油藏孔隙中的运移规律,可用于注水井调剖,封堵水流通道,扩大注水波及体积,实现提高采收率的目的。物理模拟压裂裂缝实验结果表明,颗粒堵剂在运移过程中提高注入压力能够突破孔道向深部运动。选用不同粒径的石英砂填制人造岩心,渗透率级别300~500μm^(2),注入过程中注入压力先平稳上升,上升到一定程度后突然下降,含油污泥在外力的推动下,逐步向地层深部运动,随着注入量的增加,含油污泥颗粒在地层孔隙中堆积,阻力增加,注入压力增加,这种现象说明含油污泥颗粒堵剂在孔隙中具有较好的运移性能,能够进入地层深部,实现深部封堵的目的。开展含油污泥与凝胶体系对比实验,含油污泥颗粒堵剂与常规应用调剖体系(0.2%聚合物+0.2%酚醛树脂交联剂)相比具有优势,颗粒堵剂的注入压力、提高采收率幅度优于凝胶体系,含油污泥堵剂注入压力达1.32 MPa,采收率达到50.9%,封堵强度对比提高了0.42 MPa(凝胶压力0.9 MPa,含油污泥堵剂压力1.32 MPa)。含油污泥颗粒堵剂在裂缝性油藏具有较好的注入性能,在油藏中能够实现深部运移,进入地层深部实现油藏深部封堵孔隙的作用。According to the characteristics of sludge particles,the migration law of oily sludge particle plugging agent in reservoir pores was investigated,which could be used for profile control of water injection wells,blocking water flow channels,expanding the swept volume of water injection,and achieving enhanced recovery.The experimental results shown that particle plugging agent could break-through the porous channel and move to the depth when the injection pressure was increased during migration process.The artificial core was filled with quartz sand of different particle sizes,and the permeability level was 300-500μm^(2).During the injection process,the injection pressure rose steadily to a certain extent,and then suddenly dropped.The sludge driven by the external force gradually moved to the depth of the formation.With the increase of the injection amount,the sludge particles accumulated in the formation pores,and the resistance and the injection increased.This phenomenon indicated that the oily sludge particle plugging agent had good migration performance in pores,and could enter deep formation,achieving deep plugging.When contrast experiment between oily sludge and gel system was carried out,comparing to the conventional profile control system(0.2%polymer+0.2%phenol formaldehyde resin cross linking agent),the sludge particle plugging agent had better advantages.and the injection pressure and enhanced oil recovery range of particle plugging agent were better than that of gel system.The injection pressure of sludge plugging agent reached to 1.32 MPa,and the oil recovery reached to 50.9%,and the plugging strength increased by 0.42 MPa(gel pressure was 0.9 MPa,sludge plugging agent pressure was 1.32 MPa).Oily sludge particle plugging agent had good injection performance in fractured reservoir,and could achieve deep migration in reservoir and the role of deep reservoir plugging pores by entering deep formation.

关 键 词：含油污泥 颗粒粒径 运移规律 封堵性能 

分 类 号：X741[环境科学与工程—环境工程] TE39[石油与天然气工程—油气田开发工程]