摘要
针对水平井多元热流体多轮次吞吐过程中存在气窜的问题,在室内实验筛选适用于NB35-2油田的高温泡沫体系的基础上,利用数值模拟软件建立高温泡沫辅助多元热流体一维和三维数值模拟模型,分析高温泡沫辅助多元热流体技术提高采收率机理。结果表明,高温泡沫辅助多元热流体数值模拟模型拟合精度高,其提高采收率机理主要有抑制注入气体窜流,减少注入热损失以及保持注入井近井地带地层能量等3个方面。现场应用表明,高温泡沫辅助多元热流体可以降低多轮次吞吐气窜问题,能进一步提高多元热流体多轮次吞吐后期的开发效果。
In order to solve the gas breakthrough problem occurred in the process of horizontal well multi - compo- nent thermal fluid multi - cycle huff and puff, high temperature foam assisted multi - component thermal fluid one- dimension and 3D numerical simulation models have been established, based on the experimental selected high temperature foam system suitable for NB35 - 2 oilfield, to analyze the EOR mechanism of the high temperature foam assisted multi -component thermal fluid technology. The results show that the high temperature foam assisted multi -component thermal fluid numerical simulation model has high fitting accuracy with EOR mechanisms inclu- ding injected gas channeling control, injecting heat loss elimination and near injecting well formation energy mainte- nance. The field application shows that the high temperature foam assisted multi - component thermal fluid can eliminate the multi- cycle huff multi -component thermal fluid and puff gas breakthrough and further multi -cycle huff and puff. improve the development effect in the later
作者
游晓伟
宫汝祥
YOU Xiaowei;GONG Ruxiang(Oilfield Service Co. Ltd., CNOOC, Tianjin 300459, Chin)
出处
《重庆科技学院学报（自然科学版）》
CAS
2018年第3期29-32,39,共5页
Journal of Chongqing University of Science and Technology：Natural Sciences Edition
基金
国家科技重大专项"大型油气田及煤层气开发"(2011ZX05057)子课题"海上稠油油田热采技术试验示范"(2011ZX05057-005)
关键词
多元热流体
数值模拟
高温泡沫
多轮次吞吐
multi - component thermal fluid
numerical simulation
high temperature foam
multi - cycle huff andpuff
