靖安低渗透裂缝性油藏泡沫辅助空气驱油试验效果分析  

Results analysis of foam-assisted air flooding pilot project in the low permeability fractured reservoir of Jing'an Oilfield

作　　者：庞岁社[1] 李花花[1] 段文标[1] 傅波 李积先 

机构地区：[1]中国石油长庆油田分公司勘探开发研究院,陕西西安710018 [2]中国石油长庆油田分公司第三采油厂,宁夏银川750005

出　　处：《复杂油气藏》2012年第3期60-63,共4页Complex Hydrocarbon Reservoirs

摘　　要：靖安油田五里湾ZJ53井区储层渗透率低,非均质性强,在前期注水开发过程中,受天然裂缝和人工裂缝影响,主向井裂缝性水淹特征明显,侧向井呈现高渗透带水淹特征,导致注水驱油效率低下。泡沫辅助空气驱将空气作为驱油剂,泡沫作为辅助调剖剂,可实现边调边驱,具有实施成本低,工艺简单的特点,特别对低渗透、裂缝见水油藏能有效改善平面水驱矛盾,扩大波及体积。现场试验应用表明,试验后该区19口油井中有11口明显见效,综合含水由58.3%下降到50.3%,日产油总量由见效前的47.3t上升到最高值62.1t,达到了增油降水目的。There are low permeability and strong heterogeneity in ZJ53 well area of Jing'an Oilfield.In the early period of water flooding development,because of the influence of natural and induced fractures,the water-out characteristic of fractured reservoir and high permeable zone were obvious in main direction wells and in lateral wells,respectively.As a result,the water flooding efficiency is very low.In the process of foam-assisted air flooding,which is a low-cost and easy operation process,air and foam are respectively used for oil displacement agent and profile control agent,which can realize the purpose of profile control and oil drive.To low-permeability fractured reservoirs having water breakthrough,the technology can effectively solve the water flooding contradictions and enlarge the swept volume.Field test indicates that 11 of 19 oil wells have obvious effect after it was done.The average water cut decreased from 58.3% to 50.3% and the total daily oil production increased from 47.3t to a maximum value of 62.1t.

关 键 词：低渗透裂缝性油藏 空气泡沫驱 现场试验效果 靖安油田 

分 类 号：TE135[石油与天然气工程—油气勘探]