稠油厚油层聚驱驱油效率和波及系数贡献研究
|
摘要
M断块属于稠油厚油层油藏,进入聚合物驱开发后如何进一步挖潜和提高采收率尤为重要。过去在提高采收率理论研究过程中主要关注的是波及体积和驱油效率对采收率的影响,对于波及体积和驱油效率对提高采收率的贡献研究较少。现有方法确定的驱油效率和波及系数存在精确度低的缺陷,且计算可靠性和准确性也无法得到验证。采用室内物理模拟实验手段,以电阻-含油饱和度关系曲线为研究基础,研究了M断块聚合物驱油过程中不同层位及不同位置驱油效率与波及体积的变化特征,探讨了聚合物驱驱油效率与波及体积对提高采收率的贡献值。结果表明,聚驱主要贡献为扩大各层波及体积,中渗层对于采收率贡献达到61.79%,其次是高渗及特高渗透层,贡献率为34.48%,而低渗层仅为3.73%。
Fault block M belongs to heavy oil reservoir with thick layer. How to further tap potential and improve oil recovery after entering polymer flooding development is particularly important. In the past, the influence of sweep volume and displacement efficiency on oil recovery has been the main concern in the theoretical study of enhanced oil recovery, while the contribution of sweep volume and displacement efficiency to enhanced oil recovery has been less studied. The characteristics of oil displacement efficiency and sweep volume in the polymer flooding process of M fault block were studied using the method of reservoir engineering which adopted the experimental method of indoor physical simulation, based on the relationship between resistance and oil saturation. And the contribution generated from oil displacement efficiency and sweep volume to enhance oil recovery was discussed. The results showed that the main contribution of polymer flooding was to enlarge the sweep volume of each layer. The contribution generated from the medium permeability layer to enhance oil recovery was 61.79%. And secondly, the contribution generated from high and extra-high permeability layer was 34.48%, while the low permeability layer was only 3.73%.
Fault block M belongs to heavy oil reservoir with thick layer. How to further tap potential and improve oil recovery after entering polymer flooding development is particularly important. In the past, the influence of sweep volume and displacement efficiency on oil recovery has been the main concern in the theoretical study of enhanced oil recovery, while the contribution of sweep volume and displacement efficiency to enhanced oil recovery has been less studied. The characteristics of oil displacement efficiency and sweep volume in the polymer flooding process of M fault block were studied using the method of reservoir engineering which adopted the experimental method of indoor physical simulation, based on the relationship between resistance and oil saturation. And the contribution generated from oil displacement efficiency and sweep volume to enhance oil recovery was discussed. The results showed that the main contribution of polymer flooding was to enlarge the sweep volume of each layer. The contribution generated from the medium permeability layer to enhance oil recovery was 61.79%. And secondly, the contribution generated from high and extra-high permeability layer was 34.48%, while the low permeability layer was only 3.73%.
引文
[1]李长宏,泌124断块下层系普通稠油油藏聚合物驱实践与认识[J].石油地质与工程,2011,25(5):67-69.Li C H. Practice and recognition of ordinary heavy oil reservoir polymer flooding in Bi 124 fault block low series[J].Petroleum Geology and Engineering,2011,25(5):67-69.
[2]李星,费永涛,关群丽,等.小断块普通稠油高效聚合物驱跟踪调整技术及应用——以河南古城油田泌124断块下层系为例[J].油气藏评价与开发,2013,3(1):40-43.Li X,Fei Y T,Guan Q L,et al.Common heavy oil high efficiency polymer flooding tracking adjusting technique in small fault block and its application-taking Bi-124 fault lower series of Henan Gucheng oil field as an example[J]. Reservoir Evaluation and Development,2013,3(1):40-43.
[3] Garrouch A A.A viscoelastic model for polymer flow in reservoir rocks[R].SPE 54379,1999.
[4] Urbissinova T S,Trivedi J J,Kuru E. Effect of elasticity during viscoelastic polymer flooding:A possible mechanism of increasing the sweep efficiency[R].SPE 133471-PA,2010:49-56.
[5] Blanchard V,Lasseux D,Bertin H,et al.Gas/water flow in porous media in the presence of adsorbed polymer:Experimental study on non-darcy effects[R].SPE 99711,2006.
[6] Norman C,De Lucia J,Turner B.Improving volumetric sweep efficiency with polymer gels in the Cuyo basin of Argentina[R].SPE 99379,2006.
[7] Jackson P D,Lovell M A,Roberts J,et al.Rapid non-contacting resistivity logging of core[J].Geological Society London Special Publications,2006,267(1):1-7.
[8]张瑾琳,吴向红,晋剑利,等.水驱厚层油藏纵向波及系数预测新模型[J].特种油气藏,2017,24(2):103-106.Zhang J L,Wu X H,Jin J L,et al.A new vertical sweep efficiency prediction model for water-flooding thick oil reservoirs[J].Special Oil&Gas Reservoirs,2017,24(2):103-106.
[9]陈挺,张贵才,葛际江.普通稠油SP二元复合驱波及系数与驱油效率的关系[J].石油化工高等学校学报,2014,27(1):66-70.Chen T,Zhang G C,Ge J J. The relationship of sweep efficiency and displacement efficiency of SP binary combination flooding systems for heavy Oil[J].Journal of Petrochemical Universities,2014,27(1):66-70.
[10]兰玉波,杨清彦,李斌会.聚合物驱波及系数和驱油效率实验研究[J].石油学报,2006,27(1):64-68.Lan Y B,Yang Q Y,Li B H.Experimental research on sweep efficiency and oil displacement efficiency of polymer flooding[J].Acta Petrolei Sinica,2006,27(1):64-68.
[11]常兴伟.电阻法测二元复合驱剩余油分布及其影响因素实验研究[J].海洋石油,2012,32(4):64-69.Chang X W.Experimental study on distribution of residual oil after surfactant/polymer flooding with resistivity method and influence factors[J].Offshore Oil,2012,32(4):64-69.
[12]张颖苹.稠油油藏聚合物驱剖面反转现象室内实验[J].特种油气藏,2016,23(6):111-114.Zhang Y P.Laboratory experiment of profile inversion regulation in heavy-oil reservoir with polymer flooding[J].Special Oil&Gas Reservoirs,2016,23(6):111-114.
[13]王晓超,沈思,王锦林,等.渤海S油田聚合物驱剩余油分布规律研究[J].特种油气藏,2016,23(3):102-105.Wang X C,Shen S,Wang J L,et al.Remaining oil distribution of polymer flooding in Bohai S oilfield[J].Special Oil&Gas Reservoirs,2016,23(3):102-105.
[14]杨清彦,李斌会,李宜强,等.聚合物驱波及系数和驱油效率的计算方法研究[J].大庆石油地质与开发,2007,26(1):109-112.Yang Q Y,Li B H,Li Y Q,et al.Calcuhtion method research on sweep efficiency and displacement efficiency in polymer flooding[J].Petroleum Geology&Oilfield Development in Daqing,2007,26(1):109-112.
[15]王晓超,沈思,王锦林,等.渤海S油田聚合物驱剩余油分布规律研究[J].特种油气藏,2016,23(3):102-105.Wang X C, Shen S,Wang J L,et al.Remaining oil distribution of polymer flooding in Bohai S oilfield[J].Special Oil&Gas Reservoirs,2016,23(3):102-105..
[2]李星,费永涛,关群丽,等.小断块普通稠油高效聚合物驱跟踪调整技术及应用——以河南古城油田泌124断块下层系为例[J].油气藏评价与开发,2013,3(1):40-43.Li X,Fei Y T,Guan Q L,et al.Common heavy oil high efficiency polymer flooding tracking adjusting technique in small fault block and its application-taking Bi-124 fault lower series of Henan Gucheng oil field as an example[J]. Reservoir Evaluation and Development,2013,3(1):40-43.
[3] Garrouch A A.A viscoelastic model for polymer flow in reservoir rocks[R].SPE 54379,1999.
[4] Urbissinova T S,Trivedi J J,Kuru E. Effect of elasticity during viscoelastic polymer flooding:A possible mechanism of increasing the sweep efficiency[R].SPE 133471-PA,2010:49-56.
[5] Blanchard V,Lasseux D,Bertin H,et al.Gas/water flow in porous media in the presence of adsorbed polymer:Experimental study on non-darcy effects[R].SPE 99711,2006.
[6] Norman C,De Lucia J,Turner B.Improving volumetric sweep efficiency with polymer gels in the Cuyo basin of Argentina[R].SPE 99379,2006.
[7] Jackson P D,Lovell M A,Roberts J,et al.Rapid non-contacting resistivity logging of core[J].Geological Society London Special Publications,2006,267(1):1-7.
[8]张瑾琳,吴向红,晋剑利,等.水驱厚层油藏纵向波及系数预测新模型[J].特种油气藏,2017,24(2):103-106.Zhang J L,Wu X H,Jin J L,et al.A new vertical sweep efficiency prediction model for water-flooding thick oil reservoirs[J].Special Oil&Gas Reservoirs,2017,24(2):103-106.
[9]陈挺,张贵才,葛际江.普通稠油SP二元复合驱波及系数与驱油效率的关系[J].石油化工高等学校学报,2014,27(1):66-70.Chen T,Zhang G C,Ge J J. The relationship of sweep efficiency and displacement efficiency of SP binary combination flooding systems for heavy Oil[J].Journal of Petrochemical Universities,2014,27(1):66-70.
[10]兰玉波,杨清彦,李斌会.聚合物驱波及系数和驱油效率实验研究[J].石油学报,2006,27(1):64-68.Lan Y B,Yang Q Y,Li B H.Experimental research on sweep efficiency and oil displacement efficiency of polymer flooding[J].Acta Petrolei Sinica,2006,27(1):64-68.
[11]常兴伟.电阻法测二元复合驱剩余油分布及其影响因素实验研究[J].海洋石油,2012,32(4):64-69.Chang X W.Experimental study on distribution of residual oil after surfactant/polymer flooding with resistivity method and influence factors[J].Offshore Oil,2012,32(4):64-69.
[12]张颖苹.稠油油藏聚合物驱剖面反转现象室内实验[J].特种油气藏,2016,23(6):111-114.Zhang Y P.Laboratory experiment of profile inversion regulation in heavy-oil reservoir with polymer flooding[J].Special Oil&Gas Reservoirs,2016,23(6):111-114.
[13]王晓超,沈思,王锦林,等.渤海S油田聚合物驱剩余油分布规律研究[J].特种油气藏,2016,23(3):102-105.Wang X C,Shen S,Wang J L,et al.Remaining oil distribution of polymer flooding in Bohai S oilfield[J].Special Oil&Gas Reservoirs,2016,23(3):102-105.
[14]杨清彦,李斌会,李宜强,等.聚合物驱波及系数和驱油效率的计算方法研究[J].大庆石油地质与开发,2007,26(1):109-112.Yang Q Y,Li B H,Li Y Q,et al.Calcuhtion method research on sweep efficiency and displacement efficiency in polymer flooding[J].Petroleum Geology&Oilfield Development in Daqing,2007,26(1):109-112.
[15]王晓超,沈思,王锦林,等.渤海S油田聚合物驱剩余油分布规律研究[J].特种油气藏,2016,23(3):102-105.Wang X C, Shen S,Wang J L,et al.Remaining oil distribution of polymer flooding in Bohai S oilfield[J].Special Oil&Gas Reservoirs,2016,23(3):102-105..