脉冲中子全谱测井碳氧比资料在南堡钙质砂岩储层的应用
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摘要
南堡油田馆陶组至东一段主力开发层系的砂岩储层富含钙质,造成应用常规测井资料和碳氧比测井资料识别储层流体存在困难。针对性地研究与应用了PNST碳氧比测井资料的钙质校正方法。按照PNST测井仪和当地套管井实际结构建立模型,通过MCNP数值模拟,获得了碳氧比和俘获钙产额测井值随地层岩性和孔隙度变化的规律。可利用俘获钙产额曲线校正钙质含量对碳氧比曲线影响,提高含油饱和度解释准确性。应用钙质校正方法后,PNST含油饱和度测井解释成果为南堡油田制订堵水、补孔方案提供了有效依据,90%以上的井措施后增油明显。测井实例显示,PNST测井资料在南堡油田能够准确识别油水层。
The calcium-rich sandstone reservoirs in the main development zone from the Guantao Formation to the first interval of the Dongying Formation in Nanpu Oilfield bring challenges to identify formation fluids using conventional logging data and carbon-oxygen ratio logging data.To address the issue,the calcium correction method for PNST carbon-oxygen ratio logging data was studied and applied.Model was established according to the PNST logging tool and actual wellbore structure.The variation of carbon-oxygen ratio and capture calcium yield logging with lithology and porosity of the formation was obtained by MCNP numerical simulation.The capture calcium yield curve can be used to correct the influence of calcium content on the carbon-oxygen ratio curve and improve the accuracy of oil saturation interpretation.By applying the calcium calibration method,the PNST oil saturation logging interpretation results provide an effective basis for the development of water blocking and infill perforating schemes in Nanpu Oilfield.More than 90% of the well showed significant oil recovery after stimulation.Well logging case study showed that PNST logging data can accurately identify oil and water layers in Nanpu Oilfield.
The calcium-rich sandstone reservoirs in the main development zone from the Guantao Formation to the first interval of the Dongying Formation in Nanpu Oilfield bring challenges to identify formation fluids using conventional logging data and carbon-oxygen ratio logging data.To address the issue,the calcium correction method for PNST carbon-oxygen ratio logging data was studied and applied.Model was established according to the PNST logging tool and actual wellbore structure.The variation of carbon-oxygen ratio and capture calcium yield logging with lithology and porosity of the formation was obtained by MCNP numerical simulation.The capture calcium yield curve can be used to correct the influence of calcium content on the carbon-oxygen ratio curve and improve the accuracy of oil saturation interpretation.By applying the calcium calibration method,the PNST oil saturation logging interpretation results provide an effective basis for the development of water blocking and infill perforating schemes in Nanpu Oilfield.More than 90% of the well showed significant oil recovery after stimulation.Well logging case study showed that PNST logging data can accurately identify oil and water layers in Nanpu Oilfield.
引文
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[11]赵蓬,张杰,裴玉华.南堡油田东营组低阻油气层识别技术研究[J].科技创新导报,2013,1(17):95-96.
[12]张莹,王腾,徐波,等.低对比度油气层测井识别方法——以渤海湾盆地冀东油田南堡2-1区东营组为例[J].新疆石油地质,2017,38(5):616-619.
[13]司兆伟,孔祥生,梁忠奎,等.低对比度油气层形成机理新认识与测井解释方法研究[J].测井技术,2016,40(1):56-59.
[14]刘宪伟,李淑苹.双源距碳氧比能谱测井解释方法研究[C]∥第六次核测井学术会议论文集[M],北京:石油工业出版社,2002:135-142.
[2]郑华,梁庆宝,沈付建,等.利用PNST测井资料评价示踪陶粒压裂裂缝Ⅰ:能谱[J].测井技术,2016,40(6):741-745.
[3]郑华,刘宪伟,董建华,等.PNST脉冲中子全谱测井仪在大庆油田的应用[J].测井技术,2013,37(5):541-546.
[4]董兰芳.PNST脉冲中子全谱测井仪在高尚堡油田浅南区的应用[J].石油管材与仪器,2015,1(6):48-51.
[5]吕俊涛.脉冲中子全谱测井技术及其在冀东油田的应用[J].石油管材与仪器,2016,2(3):53-57.
[6]肖勇.PNST脉冲中子全谱测井技术在冀东油田的应用[J].石油管材与仪器,2016,2(5):87-91.
[7]赵其生,于连忠.南堡油田南堡1、2号构造馆陶组储层特征研究[J].石油天然气学报,2013,35(7):38-43.
[8]贺代兰,赵立强,梁振华,等.冀东油田南堡1-5区注入水相容性研究[J].油气田地面工程,2016,35(1):35-38.
[9]陈芙,轩玲玲,董金平,等.碳氧比能谱测井技术在南堡陆地浅层油藏的应用[J].内蒙古石油化工,2011,37(10):176-178.
[10]管红,朱筱敏.南堡凹陷滩海地区古近系砂岩孔隙类型、分布及其控制因素[J].中国石油大学学报(自然科学版),2009,33(4):22-26.
[11]赵蓬,张杰,裴玉华.南堡油田东营组低阻油气层识别技术研究[J].科技创新导报,2013,1(17):95-96.
[12]张莹,王腾,徐波,等.低对比度油气层测井识别方法——以渤海湾盆地冀东油田南堡2-1区东营组为例[J].新疆石油地质,2017,38(5):616-619.
[13]司兆伟,孔祥生,梁忠奎,等.低对比度油气层形成机理新认识与测井解释方法研究[J].测井技术,2016,40(1):56-59.
[14]刘宪伟,李淑苹.双源距碳氧比能谱测井解释方法研究[C]∥第六次核测井学术会议论文集[M],北京:石油工业出版社,2002:135-142.