石油学报
石油學報
석유학보
ACTA PETROLEI SINICA
2010年
1期
100-104,109
,共6页
关文龙%马德胜%梁金中%李春涛%席长丰%张霞林
關文龍%馬德勝%樑金中%李春濤%席長豐%張霞林
관문룡%마덕성%량금중%리춘도%석장봉%장하림
火烧油层%三维物理模拟%稠油油藏%结焦带%剩余油区%提高采收率
火燒油層%三維物理模擬%稠油油藏%結焦帶%剩餘油區%提高採收率
화소유층%삼유물리모의%주유유장%결초대%잉여유구%제고채수솔
in-situ combustion%3D physical modeling%heavy oil reservoir%coking zone%remaining oil zone%enhanced oil recovery
利用一维和三维火烧油层驱油物理模拟实验装置,研究了稠油油藏直井井网火驱过程中各个地层区带的宏观热力学特征以及压力场、温度场、饱和度场分布规律.研究表明,从注气井到生产井可依次将地层划分为已燃区、火墙(燃烧带)、结焦带、油墙、剩余油区5个具有明显热力学特征的区带.结焦带为火驱过程提供固态燃料,高含油饱和度油墙是地层中压力梯度最大的区带,是注气压力的集中消耗带.保持一个稳定的油墙是确保火驱前沿持续推进、实现稳产和提高采收率的必要条件.
利用一維和三維火燒油層驅油物理模擬實驗裝置,研究瞭稠油油藏直井井網火驅過程中各箇地層區帶的宏觀熱力學特徵以及壓力場、溫度場、飽和度場分佈規律.研究錶明,從註氣井到生產井可依次將地層劃分為已燃區、火牆(燃燒帶)、結焦帶、油牆、剩餘油區5箇具有明顯熱力學特徵的區帶.結焦帶為火驅過程提供固態燃料,高含油飽和度油牆是地層中壓力梯度最大的區帶,是註氣壓力的集中消耗帶.保持一箇穩定的油牆是確保火驅前沿持續推進、實現穩產和提高採收率的必要條件.
이용일유화삼유화소유층구유물리모의실험장치,연구료주유유장직정정망화구과정중각개지층구대적굉관열역학특정이급압력장、온도장、포화도장분포규률.연구표명,종주기정도생산정가의차장지층화분위이연구、화장(연소대)、결초대、유장、잉여유구5개구유명현열역학특정적구대.결초대위화구과정제공고태연료,고함유포화도유장시지층중압력제도최대적구대,시주기압력적집중소모대.보지일개은정적유장시학보화구전연지속추진、실현은산화제고채수솔적필요조건.
The pressure, temperature and oil saturation distributions and general thermodynamic characteristics of in-situ combustion zones with vertical well pattern in heavy oil reservoir were experimentally investigated by using 1D and 3D physical modeling systems. The experimental results indicated that five zones were characterized with distinctive thermodynamics from air injecting well to producing well, including burned zone, combustion zone, coking zone, oil bank and residual oil zone. The coking zone supplies the solid fuel for burning, while the high oil saturation bank with the largest pressure gradient in the formation is the main consumption zone of gas-injecting pressure. Maintaining a stable oil bank is necessary to ensure the forward movement of fire front, and fufill stable production and enhanced oil recovery.