摘要
分析归纳了河南油田特超稠油油藏主要地质特点 ,综合研究了加密吞吐后油层条件变化及蒸汽驱的开采条件 ,并针对薄层热损失大的特点 ,围绕正常蒸汽驱的形成过程和低压汽驱有利条件 ,研究了浅层特超稠油蒸汽驱的可行性。研究结果表明 :此类油藏转小井距反九点 (或反七点 )蒸汽驱 ,可进一步提高采收率 1 8.4～ 2 7.5个百分点 ;矿场间歇汽驱试验效果较好 ,表明此类油藏转汽驱是可行的。
The main geologic features of super - heavy oil reservoirs in Henan oilfield are analyzed. The changes of reservoir conditions after huff and puff in infillers and the recovery conditions of Steamflooding are comprehensivelystudied. In viewing that heat loss in thin layers is large, the feasibility of Steamflooding in shallow super - heavy oil reservoirs is studied in respects of the forming process of normal Steamflooding and the favorable conditions of low- pressure Steamflooding. It is concluded that recovery factor will further increase by 18. 4 - 27. 5 percentage point through Steamflooding in these reservoirs. The good effects of field intermittent Steamflooding experiment show that Steamflooding in these reservoir is viable.
出处
《河南石油》
2003年第2期36-37,共2页
Henan Petroleum
关键词
特超稠油油藏
河南油田
浅层
特超稠油
蒸汽驱
小井距
井网
可行性
Henan oilfield, shallow layer, super—heavy oil, Steamflooding, small well spacing, well pattern, feasibility
