气顶油环协同开发下油气界面运移规律研究  

Experimental Studies on Oil and Gas Coordinated Development Mechanism of Oil Rim Reservoirs

作　　者：刘佳[1,2] 程林松[2] 范子菲[3] 黄世军[2] 张健[4] 

机构地区：[1]中海油研究总院,北京朝阳100028 [2]中国石油大学(北京)石油工程学院,北京昌平102249 [3]中国石油勘探开发研究院,北京海淀100083 [4]中国石化国际石油勘探开发有限公司澳大利亚公司技术支持组,北京海淀100083

出　　处：《西南石油大学学报（自然科学版）》2015年第5期99-105,共7页Journal of Southwest Petroleum University(Science & Technology Edition)

基　　金：国家自然科学基金(51174215/E0403);国家重点基础研究发展计划(2011CB707305-005);国家科技重大专项(2011ZX05024-002-006)

摘　　要：针对气顶油环协同开发时,油气界面运移规律认识不清的问题,展开了不同采气速度下油气界面运移规律的研究,研究中通过三维可视化气顶油环油藏物理模拟装置和与室内实验等尺寸的数值实验模型,模拟不同采气速度下气顶油环油藏的开发过程,通过模型可视窗口和数值模型饱和度场,实时观察记录油气界面运移规律以及油井生产动态。实验结果表明,随着采气速度增加,气顶膨胀能得到有效抑制,油气界面运移速度减慢,且内、外油气界面运移速度逐渐趋于平衡,油气界面运移形态逐渐稳定,有效减缓油井气窜的发生,增加气顶膨胀驱油的动用范围。通过物质平衡原理,建立气顶油环协同开采的油藏工程方法,推导不同开发方式下的油气界面运移规律,计算结果表明,当采油速度越小,采气速度越大时,油气界面向油环侵入的速度越小,合适的采油速度和采气速度可以保持油气界面平衡。In order to study the mechanism of oil and gas coordinated development in oil rim reservoirs,three-dimensional visualized gas-cap reservoir physical simulation device was established to simulate the processes of oil and gas development at different gas production rates.Monitoring and records of the interface migration law and well performance can be realized through visualization window.According to experimental results,migration speed of oil-gas interface was reduced with increasing gas production rates while migration speeds of internal and external oil-gas interfaces gradually became close,which effectively slows down occurrence of gas channeling,reduces production gas oil ratio and increases the swept volume of gas drive,so as to improve its development effect.And by means of the material balance principle,engineering methods for gas-cap oil-rim reservoir by collaborative development are worked out to deduce the migration law of oil gas interface under different development methods.When the gas production rate is small while the gas production rate is big,the oil gas interface tends to intrude oil rim in a much slower way,and proper oil production rate and gas production rate can maintain the balance of oil gas interface.

关 键 词：气顶油藏 油气界面运移规律 室内实验 数值实验 油藏工程方法 

分 类 号：TE34[石油与天然气工程—油气田开发工程]