鲁克沁深层稠油油藏天然气吞吐开发机理  

Mechanism of Development of Deep Heavy Oil Reservoir by Gas Huff and Puff Process in Lukeqing Field,Tuha Basin

作　　者：张志东[1,2] 赵健 

机构地区：[1]大庆石油学院,黑龙江大庆163318 [2]中国石油吐哈油田分公司,新疆哈密839009

出　　处：《新疆石油地质》2009年第6期742-744,共3页Xinjiang Petroleum Geology

摘　　要：针对鲁克沁深层稠油油藏埋深、油质稠特点,提出了天然气吞吐开发的方案,通过室内物理模拟实验研究,认为天然气吞吐开发除了常规的溶解降粘外,最重要的机理是稠油注气后存在拟泡点,从而形成泡沫油分散降粘。天然气吞吐过程中,从注气井井底到地层远端,地层依次分为过饱和区、饱和区及欠饱和区,并以此为基础开展了矿场试验,取得了良好效果。Lukeqing heavy oil reservoir is characterized by deep, thick and poor physical properties, difficult to exploit it using existing techniques for heavy oil thermal recovery. This paper presents the process of natural gas stimulation （huff and puff） to do it, which depends on the experiment of physical modeling. It is recognized that the key mechanism of this process is that there exists pseudo- bubble point after gas injection, forming foaming oil for disperse visbreaking besides conventional dissolution viscosity break. In the process of natural gas huff and puff, from the bottom hole of gas injection well to the distal formation, the formation zone will be divided into oversaturation section, saturation section and undersaturation one. Based on these, the field test is made and good effect is gained.

关 键 词：吐哈盆地 鲁克沁油田 稠油 天然气吞吐 泡沫油 

分 类 号：TE345[石油与天然气工程—油气田开发工程] TE357.7