ICD控水工艺技术在南海礁灰岩油田的应用与思考
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摘要
南海礁灰岩A油田因其原油黏度高、储集层裂缝发育等不利因素,整体开发效果不理想,采收率低。为改善开发效果,油田部分调整井应用了流入控制阀(ICD)控水工艺技术,但效果不明显,未从根本上实现稳油控水和提高采收率的目的。分析了ICD控水工艺的原理及其在A油田的应用效果,认为油田发育微裂缝导致的网状水淹严重以及ICD对于裂缝性礁灰岩油田的适应局限性是影响应用效果的主要因素。提出了应用自主式流入控制阀(AICD)实现裂缝性油藏控水的措施,对比分析了ICD和AICD的优缺点,模拟结果也表明该工艺技术能增加单井累计产油量,改善开发效果,对南海礁灰岩A油田具有较好的应用前景。
Reef Limestone Oilfield A in the South China Sea,which was high oil viscosity and fracture development,had unsatisfactory exploitation effect and low recovery.In order to improve exploitation effectiveness,the Inflow Control Device(ICD)was applied for water control in some of the infill adjustment wells,and the result was not as well as expected.The purposes of stabilizing oil and water control and enhancing oil recovery were not achieved.The principle of ICD water control and its application effectiveness in the oilfield were analyzed.It is considered that severe network water out induced by micro-fracture growth and the limitation of ICD application in the reef limestone oilfield are major factors influencing the application.It is proposed that an Autonomous Inflow Control Device(AICD)is used for water control in the fractured reservoirs,the advantage and disadvantage between ICD and AICD are compared.Simultaneously,the simulation results indicate that the technology can be applied to improve the cumulative production in single well and the effect of development.It has good application prospect in reef limestone oilfields of the South China Sea.
Reef Limestone Oilfield A in the South China Sea,which was high oil viscosity and fracture development,had unsatisfactory exploitation effect and low recovery.In order to improve exploitation effectiveness,the Inflow Control Device(ICD)was applied for water control in some of the infill adjustment wells,and the result was not as well as expected.The purposes of stabilizing oil and water control and enhancing oil recovery were not achieved.The principle of ICD water control and its application effectiveness in the oilfield were analyzed.It is considered that severe network water out induced by micro-fracture growth and the limitation of ICD application in the reef limestone oilfield are major factors influencing the application.It is proposed that an Autonomous Inflow Control Device(AICD)is used for water control in the fractured reservoirs,the advantage and disadvantage between ICD and AICD are compared.Simultaneously,the simulation results indicate that the technology can be applied to improve the cumulative production in single well and the effect of development.It has good application prospect in reef limestone oilfields of the South China Sea.
引文
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[13]Least B.Autonomous ICD installation success in Ecuador heavy oil:A case study[J].SPE166495,2013.
[14]Least B.Inflow control devices improve production in heavy oil wells[J].SPE167414,2013.
[2]刘伟新,宁玉萍,王华,等.双重介质定量描述技术在复杂礁灰岩油田开发中的应用——以珠江口盆地流花4-1油田为例[J].中国海上油气,2014,26(3):65~70.
[3]岳大力,吴胜和,林承焰,等.流花11-1油田礁灰岩油藏储层非均质性及剩余油分布规律[J].地质科技情况,2005,24(2):90~95.
[4]罗东红,唐海雄,熊友明,等.南海流花11-1礁灰岩油田储层敏感性评价[J].中国海上油气,2007,19(5):315~318.
[5]李楚吟,吴意明,张永江.南海礁灰岩油藏裂缝电阻率成像特征分析及评价[J].石油天然气学报(江汉石油学院学报),2012,34(10):72~76.
[6]陆嫣,薛怀艳,古莉,等.珠江口盆地A油田生物礁灰岩储层的精细油藏描述[J].石油地质与工程,2012,26(3):53~56.
[7]Polina M,Shahin A,George Z,et al.The design,implementation and use of inflow control devices for improving the production performance of horizontal wells[J].SPE157453,2012.
[8]方全堂,张锋利,段永刚,等.水平井流入控制阀控底水原理及影响因素分析[J].西南石油大学学报(自然科学版),2012,34(6):107~111.
[9]Least B.Autonomous ICD single phase testing[J].SPE160165,2012.
[10]Aakre H.Smart well with autonomous inflow control valve technology[J].SPE164348,2013.
[11]Fripp M.The theory of a fluidic diode autonomous inflow control device[J].SPE167415,2013.
[12]Zeng Quanshu.Selection and optimization study on passive inflow control devices by numerical simulation[J].SPE167443,2013.
[13]Least B.Autonomous ICD installation success in Ecuador heavy oil:A case study[J].SPE166495,2013.
[14]Least B.Inflow control devices improve production in heavy oil wells[J].SPE167414,2013.