注蒸汽后稠油油藏火驱跟踪数值模拟技术——以新疆H1块火驱试验区为例  

Numerical simulation of fire flooding for heavy oil reservoirs after steam injection: A case study on Block H1 of Xinjiang Oilfield, NW China

作　　者：席长丰[1,2] 关文龙[1,2] 蒋有伟[1,2] 梁金中[1,2] 周游[1,2] 吴键[1,2] 王晓春[1,2] 程宏杰[3] 黄继红[4] 王波生[4] 

机构地区：[1]提高石油采收率国家重点实验室 [2]中国石油勘探开发研究院 [3]中国石油新疆油田公司勘探开发研究院 [4]中国石油新疆油田公司采油一厂

出　　处：《石油勘探与开发》2013年第6期715-721,共7页Petroleum Exploration and Development

基　　金：国家重大科技专项"火烧驱油技术研究与应用"(2011ZX05012-002)

摘　　要：以新疆H1块已实施3 a的火驱试验区为原型,通过与物理模拟结果、现场生产动态相互验证和调整,合理划分原油组分、确定火驱高温燃烧方程式、求取原油氧化动力学参数,建立了精确的火驱数值模拟基础模型。应用该模型对H1块火驱试验进行了跟踪模拟研究。研究表明:注蒸汽后形成的次生水体在燃烧初期大部分被烟道气驱替出来,只有小部分起到了有限湿烧的作用;火驱储集层从注气井到生产井依次为已燃区、火墙、结焦带、高温凝结带、油墙、剩余油区,比以往认识增加了高温凝结带;与原始油藏火驱过程不同,注蒸汽后的油藏火驱,存在着"先填坑、后成墙"的油墙构建、运移过程,油墙的形态与附近生产井动态密切相关。矿场试验表明,火驱跟踪数值模拟有效提升了火驱动态预测和管理水平。With the 3a pilot area in Block H 1 of Xinjiang Oilfield as an example, a basic model for accurate numerical simulation of fire flooding is established combining with physical simulation and field performance, after oil components are divided reasonably, high temperature combustion formula is defined. This model is used to trace and simulate the fire flooding in Block HI. The main results are as follows： （1） secondary water generated after steam injection is mostly displaced by flue gas during initial combustion phase, and only a small fraction works for limited wet combustion; （2） the flooded reservoirs, from the gas injection well to the production well, are divided into burnt zone, fire wall, coking zone, high temperature condensed zone （added newly）, oil bank, and residual oil zone; and （3） the fire flooding for reservoir after steam injection, unlike original reservoir, experiences a process of oil bank building and migration featuring ＂pit filled and bank built＂, with bank shape related to the performance of adjacent production wells. Moreover, the field experiment indicates that the numerical simulation of fire flooding contributes to the prediction and management of flooding performance.

关 键 词：稠油油藏 火驱 数值模拟 次生水体 油墙 高温凝结带 

分 类 号：TE357.44[石油与天然气工程—油气田开发工程]