油藏流体黏度测量技术及应用  

Measurement Technology and Application of Reservoir Fluid Viscosity

作　　者：郭松林[1,2] 崔长玉 吕昌森 GUO Songlin;CUI Changyu;LV Changsen(Research Institute of Exploration and Development,Petro China Daqing Oilfield Co.,Ltd.,Daqing,Heilongjiang 163712,China;National Energy Research and Development Centerfor Sustainable Exploitation of Continental Sandstone Old OilFields,Daqing,Heilongjiang 163712,China)

机构地区：[1]中国石油大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712 [2]国家能源陆相砂岩老油田持续开采研发中心,黑龙江大庆163712

出　　处：《石油工业技术监督》2024年第6期27-31,共5页Technology Supervision in Petroleum Industry

基　　金：国家重大科技专项“大庆长垣特高含水油田提高采收率示范工程”(编号:2016ZX05054);大庆油田公司科技项目“萨莫托洛尔油田聚合物驱提高采收率可行性评价研究”(编号:dqp-2019-sccy-ky-001)。

摘　　要：为了准确测量油藏条件下气体、液体和气液混合物的运移黏度,依据泊肃叶定律设计了毛细管黏度计。毛细管黏度计主要包括注入系统、测量系统、回压控制系统和辅助系统4个部分。针对气体、液体和气液混合物的特性,分别设计了气体注入系统、液体注入系统和气液混合注入系统,并研制了不同内径的毛细管和不同渗透率的孔隙介质模型模拟油藏孔隙。结果表明,毛细管黏度计实现了气体、液体和气液混合物的注入速度准确计量和黏度测量,回压控制系统采用回压式位移量化控制系统精准控制回压,提高了毛细管黏度计测量的准确度和精度。在模拟油藏条件氮气黏度非常低,仅为0.018 mPa·s,而聚合物和泡沫体系毛细管黏度较高,分别为78 m Pa·s和126 m Pa·s。In order to accurately measure the migration viscosity of gas,liquid and gas-liquid mixture under reservoir conditions,a capillary viscometer was designed according to Poiseuille's law.The capillary viscometer mainly includes four parts:injection system,measurement system,back pressure control system and auxiliary system.According to the characteristics of gas,liquid and gas-liquid mixture,the gas injection system,liquid injection system and gas-liquid mixed injection system were designed respectively,and the pore medium models with different inner diameters and different permeability were developed to simulate the reservoir pores.The re-sults show that the capillary viscometer can accurately measure the injection velocity and viscosity of gas,liquid and gas-liquid mix-ture.The back pressure control system uses the back pressure displacement quantization control system to accurately control the back pressure,improving the accuracy and precision of the capillary viscometer's viscosity measurement.Under simulated reservoir condi-tions,nitrogen viscosity is very low,only 0.018 mPa's,while polymer and foam system capillary viscosity is high,78 mPa's and 126 mPa's,respectively.

关 键 词：毛细管黏度计 泊肃叶定律 注入系统 测量系统 回压控制系统 

分 类 号：TE35[石油与天然气工程—油气田开发工程]