海上气云影响区复杂断块油田河道刻画思路与挖潜——以渤中Y油田为例
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摘要
渤海南部海域渤中Y油田为复杂断块油田,主力含油层位为明化镇组下段,储层为分支状水下分流河道沉积,储层横向变化快。由于受浅层气云影响,部分断块地震反射杂乱,成像模糊,储层预测困难。气云区外,在区域沉积背景约束下,利用测井相、地震相及小层地震属性,井震一体化完成河道刻画;气云区内,充分利用井眼资料识别河道边界,结合动态储量认识及油田整体沉积模式,参考气云区外河道走向趋势及河道间湾展布特征,由外向内完成了气云区内的河道刻画。利用研究成果在气云区内部署调整方案,开发井实钻油层厚度8 m,有效增加了储量动用程度,提高了油气采收率。
The Bozhong Y Oilfield in the southern part of Bohai Sea is a complex fault-block oilfield,of which the main oil-bearing layer is the lower section of N1 mlFormation. And the reservoir is the deposition of underwater distributary channels with a rapid lateral variation. Due to the influence of shallow gas-cloud,the seismic reflections are messy,the imaging is blurred,and it is difficult to predict reservoirs in some fault-blocks. Outside the gas-cloud area,under the constraint of regional sedimentary background,the channel description was completed by integrating the logging facies,the seismic facies and the seismic attributes of small layers. Inside the gas-cloud area,the wellbore data can be used to identify the channel boundary. Combined with dynamic reserves and overall sedimentary pattern for the oilfield,considering the channel trend and the distribution characteristics of interchannel bay outside the gas-cloud area,the channel description inside the area of gas cloud was completed from outside to inside. The research results were applied to deploy the adjustment scheme inside the area of gas cloud. So an oil layer with a thickness of 8 m was drilled in the development well. Thus this effectively increases the recoverable level of reserves and enhances the oil recovery rate.
The Bozhong Y Oilfield in the southern part of Bohai Sea is a complex fault-block oilfield,of which the main oil-bearing layer is the lower section of N1 mlFormation. And the reservoir is the deposition of underwater distributary channels with a rapid lateral variation. Due to the influence of shallow gas-cloud,the seismic reflections are messy,the imaging is blurred,and it is difficult to predict reservoirs in some fault-blocks. Outside the gas-cloud area,under the constraint of regional sedimentary background,the channel description was completed by integrating the logging facies,the seismic facies and the seismic attributes of small layers. Inside the gas-cloud area,the wellbore data can be used to identify the channel boundary. Combined with dynamic reserves and overall sedimentary pattern for the oilfield,considering the channel trend and the distribution characteristics of interchannel bay outside the gas-cloud area,the channel description inside the area of gas cloud was completed from outside to inside. The research results were applied to deploy the adjustment scheme inside the area of gas cloud. So an oil layer with a thickness of 8 m was drilled in the development well. Thus this effectively increases the recoverable level of reserves and enhances the oil recovery rate.
引文
[1]刘桂和.渤中29-4油田成藏分析及其勘探意义[J].石油地质与工程,2014,28(3):1-5.
[2]王应斌,薛永安,张友,等.油气差异聚集原理应用效果分析-以黄河口凹陷为例[J].海洋石油,2010,30(4):2-25.
[3]CAFARELI B,MADTSON E,KRAIL P.3-D gas cloud imaging of the Donald Field with converted waves[J].SEG Technical Program Expanded Abstracts,2000,19:1162-1165.
[4]LI Xiang Yang,DAI Heng Chang,MUELLER M,etal.Compensating for the effects of gas clouds on C-wave imaging:A case study from Valhall[J].The Leading Edge,2001,20(9):1022-1028.
[5]张志军,周东红.数据驱动的“气云”区振幅补偿方法[J].石油地球物理勘探,2016,51(3):474.
[6]刘传奇,明君,马奎前,等.方差技术在“气云区”深度预测中的应用探讨[J].中国海上油气,2012,24(5):21-23.
[7]刘建辉,夏同星,郭军,等.浅层气对下伏地层深度预测影响定量研究及在渤海B油田中的应用[J].物探与化探,2016,40(4):763-770.
[8]代黎明,李建平,周心怀,等.渤海海域新近系浅水三角洲沉积体系分析[J].岩性油气藏,2007,19(4):75-81.
[9]朱伟林,李建平,周心怀,等.渤海新近系浅水三角洲沉积体系与大型油气田勘探[J].沉积学报,2008,26(4):575-581.
[10]张新涛,周心怀,李建平,等.敞流沉积环境中“浅水三角洲前缘砂体体系”研究[J].沉积学报,2014,32(2):260-267.
[11]赖维成,程建春,周心怀,等.湖盆萎缩期准平原沉积层序划分与砂体特征研究-以黄河口地区新近系明下段为例[J].中国海上油气,2009,21(3):157-161.
[12]张昌民,尹太举,朱永进,等.浅水三角洲沉积模式[J].沉积学报,2010,28(5):933-944.
[13]朱筱敏,潘荣,赵东娜,等.湖盆浅水三角洲形成发育与实例分析[J].中国石油大学学报(自然科学版),2013,37(5):7-14.
[14]尹太举,李宣玥,张昌民,等.现代浅水湖盆三角洲沉积砂体形态特征-以洞庭湖和鄱阳湖为例[J].石油天然气学报,2012,34(10):1-8.
[15]钟怡江,陈洪德,徐长贵,等.辽东湾坳陷新近系馆陶组浅水三角洲的发现及其油气勘探意义[J].石油与天然气地质,2017,38(3):499-507.
[16]LIU Xiao Gang,TANL Lyu,XIA Peng Yuan,et al.FPWD Illuminates the Path for Brown Field Development in Bohai Bay[R],SPE174331,2015.
[17]UAR L,AZIZ I,NORDIN N,et al.Demonstrating the value of integrating FPWD measurements with managed pressure drilling to safely drilln Narrow mud weight windows in HP/HT environment[R],SPE 156888,2012.
[18]张俊.随钻测压技术在绥中36-1油田的应用[J].重庆科技学院学报(自然科学版),2014,16(3):62-64.
[2]王应斌,薛永安,张友,等.油气差异聚集原理应用效果分析-以黄河口凹陷为例[J].海洋石油,2010,30(4):2-25.
[3]CAFARELI B,MADTSON E,KRAIL P.3-D gas cloud imaging of the Donald Field with converted waves[J].SEG Technical Program Expanded Abstracts,2000,19:1162-1165.
[4]LI Xiang Yang,DAI Heng Chang,MUELLER M,etal.Compensating for the effects of gas clouds on C-wave imaging:A case study from Valhall[J].The Leading Edge,2001,20(9):1022-1028.
[5]张志军,周东红.数据驱动的“气云”区振幅补偿方法[J].石油地球物理勘探,2016,51(3):474.
[6]刘传奇,明君,马奎前,等.方差技术在“气云区”深度预测中的应用探讨[J].中国海上油气,2012,24(5):21-23.
[7]刘建辉,夏同星,郭军,等.浅层气对下伏地层深度预测影响定量研究及在渤海B油田中的应用[J].物探与化探,2016,40(4):763-770.
[8]代黎明,李建平,周心怀,等.渤海海域新近系浅水三角洲沉积体系分析[J].岩性油气藏,2007,19(4):75-81.
[9]朱伟林,李建平,周心怀,等.渤海新近系浅水三角洲沉积体系与大型油气田勘探[J].沉积学报,2008,26(4):575-581.
[10]张新涛,周心怀,李建平,等.敞流沉积环境中“浅水三角洲前缘砂体体系”研究[J].沉积学报,2014,32(2):260-267.
[11]赖维成,程建春,周心怀,等.湖盆萎缩期准平原沉积层序划分与砂体特征研究-以黄河口地区新近系明下段为例[J].中国海上油气,2009,21(3):157-161.
[12]张昌民,尹太举,朱永进,等.浅水三角洲沉积模式[J].沉积学报,2010,28(5):933-944.
[13]朱筱敏,潘荣,赵东娜,等.湖盆浅水三角洲形成发育与实例分析[J].中国石油大学学报(自然科学版),2013,37(5):7-14.
[14]尹太举,李宣玥,张昌民,等.现代浅水湖盆三角洲沉积砂体形态特征-以洞庭湖和鄱阳湖为例[J].石油天然气学报,2012,34(10):1-8.
[15]钟怡江,陈洪德,徐长贵,等.辽东湾坳陷新近系馆陶组浅水三角洲的发现及其油气勘探意义[J].石油与天然气地质,2017,38(3):499-507.
[16]LIU Xiao Gang,TANL Lyu,XIA Peng Yuan,et al.FPWD Illuminates the Path for Brown Field Development in Bohai Bay[R],SPE174331,2015.
[17]UAR L,AZIZ I,NORDIN N,et al.Demonstrating the value of integrating FPWD measurements with managed pressure drilling to safely drilln Narrow mud weight windows in HP/HT environment[R],SPE 156888,2012.
[18]张俊.随钻测压技术在绥中36-1油田的应用[J].重庆科技学院学报(自然科学版),2014,16(3):62-64.