边底水稠油油藏火驱可行性及操作参数优选实验研究——以辽河油田J91区块为例  

Experimental study on feasibility of fire flooding and optimization of operation parameters in heavy oil reservoir with edge and bottom water——by taking J91 block of Liaohe oilfield as an example

作　　者：张鸿[1,2] ZHANG Hong(Liaohe Oilfield Company,PetroChina,Panjin,Liaoning 124010,China;National Research and Development Center for Heavy Oil Exploitation,Panjin,Liaoning 124010,China)

机构地区：[1]中国石油辽河油田分公司,辽宁盘锦124010 [2]国家能源稠(重)油开采研发中心,辽宁盘锦124010

出　　处：《石油地质与工程》2020年第5期74-78,共5页Petroleum Geology and Engineering

基　　金：国家科技重大专项“辽河、新疆稠油(超稠油)开发技术示范工程”(2016ZX05055)。

摘　　要：为了解决吞吐开发末期油藏水侵复杂、采出程度低、大幅提高采收率难的问题,以辽河油田J91区块为例,通过TG–DSC及室内物理模拟手段,从热量及燃料角度验证边底水稠油油藏实施火驱开发的可行性,并对操作参数的优选进行实验研究。结果表明,边底水稠油油藏实施火驱开发能够实现稳定的高温氧化燃烧,且实施火驱经济开发的燃料下限即含油饱和度为35%。边底水稠油油藏火驱点火推荐采用电点火方式,适当提高点火温度延长点火时间;并在驱替过程中采用变速注气方式提高火线前缘温度,保障火线稳定推进。研究可为同类油藏实施火驱开发技术提供一定的技术指导。In order to solve the problems of complex water invasion, low recovery degree and difficult to greatly enhance oil recovery at the end of huff and puff development, by taking block J91 of Liaohe oilfield as an example, the feasibility of fire flooding development of heavy oil reservoir with edge and bottom water was verified from the perspective of heat and fuel by TG-DSC and indoor physical simulation, and the optimization of operation parameters was studied experimentally. The results show that the stable high temperature oxidation combustion can be achieved by fire flooding development of heavy oil reservoir with edge and bottom water, and the lower limit of fuel oil saturation is 35%. Electric ignition is recommended for the ignition of heavy oil reservoir with edge and bottom water by increasing the ignition temperature and prolonging the ignition time. In the process of displacement, variable speed gas injection is used to increase the temperature of the front edge of the fire line to ensure the stable advancement of the fire line. The study can provide a good technical guidance for the implementation of fire flooding development technology in similar reservoirs.

关 键 词：辽河油田 边底水稠油油藏 火驱可行性 电点火 注气速度 

分 类 号：TE357.41[石油与天然气工程—油气田开发工程]