利用临界粘壁温度指导高含水油田不加热集输现场试验  

Using Critical Wall Sticking Temperature to Guide Field Testing of Unheated Gathering and Transportation in High Water-cut Oilfields

作　　者：姜怀 JIANG Huai(Technology Research Institute of No.4 Oil Production Plant,Daqing Oilfield Co.,Ltd.)

机构地区：[1]大庆油田第四采油厂工艺研究所

出　　处：《油气田地面工程》2023年第11期17-22,50,共7页Oil-Gas Field Surface Engineering

摘　　要：随着油田进入高含水开发后期,采出液含水率不断升高,凝固点、黏度随之降低。经现场实验,高含水油井可实现低于原油凝固点集输,凝固点已经不适宜作为指导集输温度的唯一条件。为了在安全生产的前提下最大限度地降低集油温度,通过室内试验明确某油田原油粘壁特性,并根据所得的结果指导现场开展不加热集输试验,取得了试验区掺水量下降90%以上、回压控制在0.8 MPa内的效果。试验结果表明,可以利用临界粘壁温度指导高含水油田采油井不加热集输,为油田低能耗生产提供了依据。As the oilfield enters the later stage of high water-cut development,the water content of the produced liquid increases continuously,and the freezing point and viscosity decrease accordingly.According to field tests,the produced liquid of oil wells in high water content oilfields can be gathered and transported under the temperature that lower than the freezing point of crude oil,so the freezing point of crude oil is no longer suitable as the only condition to guide the gathering and transportation temperature.In order to minimize the temperature of oil gathering and transportation under the premise of ensuring safety,the wall-sticking characteristics of crude oil in an oilfield are determined through laboratory tests.Based on the obtained results,a field test of gathering and transporting crude oil without heating is conducted.The effect of reducing the water content in the experimental area by more than 90%and controlling the back pressure within 0.8 MPa has been achieved.The experimental results show that the critical wall sticking temperature can be used to guide the unheated gathering and transportation of oil wells in high water-cut oilfields,which provide a basis for low energy consumption production in oilfields.

关 键 词：不加热集输 粘壁温度 集油温度 原油凝固点 高含水 

分 类 号：TE866[石油与天然气工程—油气储运工程]