拟声波重构技术在大民屯凹陷储层预测中的应用
|
摘要
大民屯凹陷沙四段储层主要为扇三角州沉积,近源混杂堆积、纵向厚度大,相带及岩性变化快,含油气井段长、差异大;地震资料分辨率低,声波测井曲线不能直接反映储层特征,常规地震反演很难识别砂砾岩的有利储层。针对上述问题,首先对地震资料进行了高分辨率处理,以满足后续地震反演的需求;然后对测井资料进行了预处理和敏感性分析;最后利用基于小波变换的拟声波重构技术构建拟声波曲线,并用拟声波曲线进行了地震反演研究。实际应用效果表明,拟声波重构技术可以明显提高储层预测的分辨率和精度,准确地刻画沙四下亚段砂砾岩体的有利储层。
The 4~(th) member of the Shahejie formation in Damintun sag is mainly of a fan-delta sedimentation,with characteristics of mixed accumulation near source, large longitudinal thickness, fast change of facies zone and lithology, long oil-gas well segment and large difference. Due to the low resolution of seismic data, the acoustic logging curve cannot directly reflect reservoir characteristics, and the conventional seismic inversion is difficult to identify the favorable reservoir of conglomerate. Aiming at the problems mentioned above, the seismic data are processed with high resolution in order to meet the requirements of subsequent seismic inversion, and then the preprocessing and sensitivity analysis of logging data are carried out. Finally, the pseudo-acoustic reconstruction technique based on wavelet transform are used to construct the pseudoacoustic curve, and the pseudo-acoustic curve is used for seismic inversion research. The actual application results show that the quasi-acoustic reconstruction technology can significantly improve the resolution and accuracy of reservoir prediction, accurately depict the favorable reservoir of sandy gravel mass in the lower section of the 4~(th) member of Shahejie formation.
The 4~(th) member of the Shahejie formation in Damintun sag is mainly of a fan-delta sedimentation,with characteristics of mixed accumulation near source, large longitudinal thickness, fast change of facies zone and lithology, long oil-gas well segment and large difference. Due to the low resolution of seismic data, the acoustic logging curve cannot directly reflect reservoir characteristics, and the conventional seismic inversion is difficult to identify the favorable reservoir of conglomerate. Aiming at the problems mentioned above, the seismic data are processed with high resolution in order to meet the requirements of subsequent seismic inversion, and then the preprocessing and sensitivity analysis of logging data are carried out. Finally, the pseudo-acoustic reconstruction technique based on wavelet transform are used to construct the pseudoacoustic curve, and the pseudo-acoustic curve is used for seismic inversion research. The actual application results show that the quasi-acoustic reconstruction technology can significantly improve the resolution and accuracy of reservoir prediction, accurately depict the favorable reservoir of sandy gravel mass in the lower section of the 4~(th) member of Shahejie formation.
引文
[1]马智威.大民屯静安堡西侧低潜山油气储层研究[D].湖南长沙:中南大学,2010.
[2]李建华,庞雄奇,宋兵,等.岩性油气藏分布区定量预测新方法——以大民屯凹陷为例[J].石油勘探与开发,2011,38(6):756–763.
[3]鲍丹丹.大民屯凹陷西陡坡砂砾岩体勘探技术初探[J].中外能源,2016,21(8):39–44.
[4]朱国军.声波曲线重构技术在储层预测中的应用[J].物探化探计算技术,2017,39(3):383–387.
[5]马光克,李达,隋波,等.地震多属性融合曲线重构技术在储层预测中的应用[J].物探与化探,2013,37(6):993–997.
[6]卢伟.拟声波重构技术在巴彦呼舒凹陷储层预测中的应用[J].断块油气田,2016,23(3):310–313.
[7]贾跃玮,魏水建,游瑜春,等.兴隆气田长兴组生物礁储层预测研究[J].物探与化探,2017,41(4):605–610.
[8]王团,李奎周,赵海波.针对地震反演的测井资料预处理及应用效果评价[J].国外测井技术,2017,38(2):21–24.
[9]安晶,安鹏,张宏伟,等.多曲线融合技术在储层随机反演中的应用[J].物探与化探,2012,36(4):633–636.
[10]鲍丹丹.单井评价在老区油气勘探中的应用[J].中外能源,2017,22(4):37–42.
[11]张学芳,董月昌,慎国强,等.曲线重构技术在测井约束反演中的应用[J].石油勘探与开发,2005,32(3):70–72.
[12]张星,钱诗友,裴然.曲线重构技术在富安次凹阜三段储层预测中的运用[J].复杂油气藏,2016,9(2):12–14.
[13]侯伯刚,刘文岭,罗娜.地震反演中测井数据的预处理[J].物探与化探,2009,33(3):331–336.
[14]苗凡胜.测井曲线预处理技术在时深标定中的应用[J].长江大学学报(自科版),2014,11(13):57–60.
[15]蒋振会,齐颖.曲线重构反演在非常规油藏储层横向预测中的应用[J].海洋地质前沿,2016,32(7):64–70.
[16]胡斌,陈忠培,郭新安,等.曲线重构技术在迈陈凹陷东部地区储层精细预测中的应用[J].石油地质与工程,2015,29(4):70–72.
[2]李建华,庞雄奇,宋兵,等.岩性油气藏分布区定量预测新方法——以大民屯凹陷为例[J].石油勘探与开发,2011,38(6):756–763.
[3]鲍丹丹.大民屯凹陷西陡坡砂砾岩体勘探技术初探[J].中外能源,2016,21(8):39–44.
[4]朱国军.声波曲线重构技术在储层预测中的应用[J].物探化探计算技术,2017,39(3):383–387.
[5]马光克,李达,隋波,等.地震多属性融合曲线重构技术在储层预测中的应用[J].物探与化探,2013,37(6):993–997.
[6]卢伟.拟声波重构技术在巴彦呼舒凹陷储层预测中的应用[J].断块油气田,2016,23(3):310–313.
[7]贾跃玮,魏水建,游瑜春,等.兴隆气田长兴组生物礁储层预测研究[J].物探与化探,2017,41(4):605–610.
[8]王团,李奎周,赵海波.针对地震反演的测井资料预处理及应用效果评价[J].国外测井技术,2017,38(2):21–24.
[9]安晶,安鹏,张宏伟,等.多曲线融合技术在储层随机反演中的应用[J].物探与化探,2012,36(4):633–636.
[10]鲍丹丹.单井评价在老区油气勘探中的应用[J].中外能源,2017,22(4):37–42.
[11]张学芳,董月昌,慎国强,等.曲线重构技术在测井约束反演中的应用[J].石油勘探与开发,2005,32(3):70–72.
[12]张星,钱诗友,裴然.曲线重构技术在富安次凹阜三段储层预测中的运用[J].复杂油气藏,2016,9(2):12–14.
[13]侯伯刚,刘文岭,罗娜.地震反演中测井数据的预处理[J].物探与化探,2009,33(3):331–336.
[14]苗凡胜.测井曲线预处理技术在时深标定中的应用[J].长江大学学报(自科版),2014,11(13):57–60.
[15]蒋振会,齐颖.曲线重构反演在非常规油藏储层横向预测中的应用[J].海洋地质前沿,2016,32(7):64–70.
[16]胡斌,陈忠培,郭新安,等.曲线重构技术在迈陈凹陷东部地区储层精细预测中的应用[J].石油地质与工程,2015,29(4):70–72.