气顶边水油藏天然能量开发界面运移规律研究  

Research on migration law of natural energy development interface in gascap edge water narrow oil ring reservoir

作　　者：岳宝林 祝晓林 刘斌 陈存良 王欣然 YUE Baolin;ZHU Xiaolin;LIU Bin;CHEN Cunliang;WANG Xinran(Tianjin Branch of CNOOC(China)Limited,Tianjin,300459,China)

机构地区：[1]中海石油(中国)有限公司天津分公司,天津300459

出　　处：《天然气与石油》2021年第5期74-79,共6页Natural Gas and Oil

基　　金：国家重大科技专项“渤海油田加密调整及提高采收率油藏工程技术示范”(2016ZX05058001)。

摘　　要：锦州X油藏是具有大气顶、窄油环、弱边水等典型特征的砂岩油藏,利用天然能量开采进入开发后期后,气窜对单井产油量的影响日益严重。针对这一问题,以几何相似、物性相似和生产动态相似原则建立了可视化二维物理模拟实验装置,并开展相关实验。实验结果表明:随着油藏压力降低,气体沿顶部侵入油环,油气界面有明显的下移现象,而油水界面运移不明显。在此基础上,利用建立的油气界面运移距离计算方法,对锦州X油藏3井区油气界面运移进行计算。计算结果表明:采用油气同采方式有利于该类油藏高效、合理开发。研究结果可为类似气顶边水油藏的开发提供借鉴。JZ-X reservoir is a sandstone reservoir featuring large cap,narrow oil ring,and weak edge water.After the exploitation of natural energy enters the later stage of development,gas channeling affects the oil production of a single well increasingly.In response to this issue,a visual two-dimensional physical simulation experimental device was established based on the principles of geometric similarity,physical property similarity and production dynamic similarity,and related experiments were carried out.The experimental results show that as the pressure of the reservoir decreases,gas intrudes into the oil ring along the top,and the oil-gas interface has a significant downward movement,while the oil-water interface migration is not obvious.On this basis,using the established oil and gas interface migration distance calculation method,the results of calculating the oil and gas interface migration of the I oil group in the 3 well blocks of JZ-X oil field show that the use of oil and gas production methods is conducive to the efficient and reasonable development of this type of oil reservoir.The study provides reference for the development of gas cap edge water reservoir of the same nature.

关 键 词：气顶边水 油气界面 室内实验 气窜 

分 类 号：TE34[石油与天然气工程—油气田开发工程]