靖边气田S190井区储层小幅度构造及水平井部署
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摘要
为提高靖边气田S190井区水平井储层钻遇率,综合应用三维地震、测井和钻井资料,经过制作合成记录,层位标定,利用上下标定层位构造趋势控制,结合钻井分层厚度比例,横向预测得到主力气层奥陶系马五小层顶面小幅度构造图,应用地层厚度法及印模法获得石炭系底至马五底的厚度图以及前石炭系的古构造图。对上述三图进行综合研究分析,提出水平井部署建议,已钻两口高产水平井钻进轨迹与马五顶面基本一致,相关系数分别为0.6548和0.8547,说明研究区古构造较高部位、较大的储层厚度和现今小幅度构造高部位三者叠合位置是寻找高产区以及指导水平井部署的有利指向。
To increase the drilling success ratio in reservoirs of horizontal well in S190 well block,the low amplitude folds of top surface of Ma513 that was the main gas layer in Ordovician were drew,after applying some ways including make synthetic seismic record,horizon demarcate,the combination of the structural trend surface of horizon demarcate(Tc and T014) with the thickness ratio of formation classification of every well and lateral prediction based on the 3d- seismic explanation and logging and drilling data.Moreover,the thickness between the bottom of Carboniferous and the bottom of Ma522 and the Ordovician paleokarst landform were mapped by way of the strata thickness and the impression method.Then,three maps above were analyzed comprehensively,the relationship between both horizontal well trajectory that were drilled and the top surface of Ma513 were basically matched as related coefficient 0.6548 and 0.8547.Thus,this paper gives rise to highly important guiding and practical significances on the horizontal well deployment site and search high productivity zones of gas field,where the higher position of the paleokarst landform,the thicker place of reservoir and the higher location of present structure map were coincident.
To increase the drilling success ratio in reservoirs of horizontal well in S190 well block,the low amplitude folds of top surface of Ma513 that was the main gas layer in Ordovician were drew,after applying some ways including make synthetic seismic record,horizon demarcate,the combination of the structural trend surface of horizon demarcate(Tc and T014) with the thickness ratio of formation classification of every well and lateral prediction based on the 3d- seismic explanation and logging and drilling data.Moreover,the thickness between the bottom of Carboniferous and the bottom of Ma522 and the Ordovician paleokarst landform were mapped by way of the strata thickness and the impression method.Then,three maps above were analyzed comprehensively,the relationship between both horizontal well trajectory that were drilled and the top surface of Ma513 were basically matched as related coefficient 0.6548 and 0.8547.Thus,this paper gives rise to highly important guiding and practical significances on the horizontal well deployment site and search high productivity zones of gas field,where the higher position of the paleokarst landform,the thicker place of reservoir and the higher location of present structure map were coincident.
引文
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[12]李贤庆,胡国艺,侯读杰,等.鄂尔多斯盆地中部奥陶系风化壳天然气的运移特征[J].西安石油大学学报(自然科版),2004,19(1):11-14.
[13]高磊,明君,夏同星,等.水下分流河道砂体地震储层预测及在水平井实施中的应用[J].石油地质与工程,2011,25(6):63—65.
[14]赵国英.水平井技术在苏里格低渗岩性气藏开发中的应用[J].石油地质与工程,2010,24(3):98—100.
[2]何自新,郑聪斌,陈安宁.长庆气田奥陶系古沟槽展布及其对气藏的控制[J].石油学报,2001,22(4):35-38.
[3]雷卞军,张吉.王彩丽,等.高分辨率层序地层对微相和储层的控制作用——以靖边气田统5井区马五段上部为例[J].岩性油气藏.2008,20(1):1-7.
[4]代金友,张一伟,史若珩,等.鄂尔多斯盆地中部气田剥蚀脊与沟槽[J].石油勘探与开发,2005.32(6):29-31.
[5]代金友.何顺利.鄂尔多斯盆地巾部气田奥陶系古地貌研究[J].石油学报,2005,26(3):37-39.
[6]顾岱鸿,代金友,兰朝利,等.靖边气田沟槽高精度综合识别技术[J].石油勘探与开发,2007,34(1):60-64
[7]刘丽峰,杨怀义,蒋多元,等.三维精细构造解释的方法流程和关键技术[J].地球物理学进展,2006,21(3):864—871.
[8]胡少华,郭波,林东城,等.方正断陷方3井区三维地震资料构造精细解释及储层预测[J].石油地球物理勘探,2010,45(6):909-913.
[9]邹新宁,孙卫,张盟勃,等.鄂尔多斯盆地奥陶系侵蚀沟谷及顶面形态识别[J].西北大学学报(自然科学版),2006,36(4):610-614.
[10]马振芳,周树勋,于忠平,等.鄂尔多斯盆地中东部奥陶系顶部古风化壳特征及其与天然气富集的关系[J].石油勘探与开发,1999,25(5):21-23.
[11]代金友,何顺利.鄂尔多斯盆地中部气田奥陶系古地貌研究[J].石油学报,2005,26(3):37-43.
[12]李贤庆,胡国艺,侯读杰,等.鄂尔多斯盆地中部奥陶系风化壳天然气的运移特征[J].西安石油大学学报(自然科版),2004,19(1):11-14.
[13]高磊,明君,夏同星,等.水下分流河道砂体地震储层预测及在水平井实施中的应用[J].石油地质与工程,2011,25(6):63—65.
[14]赵国英.水平井技术在苏里格低渗岩性气藏开发中的应用[J].石油地质与工程,2010,24(3):98—100.
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