【摘要】 茨榆坨油田茨34块经过近20年的常规开采,面临着油层亏空、注水开发采收率低、水淹情况比较严重等问题,急需进行开发方式的转换。通过油藏数值模拟,发现剩余油分布主要集中在茨15-156井组,选定该块茨15-156井组进行CO2+水段塞驱现场试验。现场试验表明,该块运用CO2+水段塞驱开采方式进行开发方式的转换是可行的,增油效果明显。该区块试验的成功为类似区块开发方式的成功转换提供依据。更多还原

【Abstract】 After general exploitation in recently 20 years, many problems exists in Ci34 black of Ciyutuo oilfield, such as serious reservoir depletion, lower waterflood recovery factor, serious watered-out reservoir. The general recovery method should be changed. By using reservoir numerical simulation, it is found that remaining oil distribution mainly collects at CI15-156 well team. So, this well team is selected to carry out CO₂+water slug flood test. The test proved that the CO₂+water water slug flood mode is feasible and the increased oil produce is obvious. This test’s success can provide the base for those similar black’s development conversion.更多还原