大庆油田杏树岗杏一、二区东部葡Ⅰ332a—葡Ⅰ11细层沉积体系再认识
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摘要
以高精度层序地层学理论为指导,通过对岩心、地震、测井、录井以及分析化验等资料的综合研究,重建了松辽盆地大庆长垣杏树岗地区姚家组一段葡萄花油层组葡I332 a—葡Ⅰ11细层单元沉积模式。认为在杏北油田"脉动隆升作用"(所谓脉动是指下伏隆升中心波动迁移现象)是曲流复合带有规律摆动的内在动力因素。在此理论指导下,重建了该区各细层单元沉积微相平面展布模式。平面上在主力油层葡Ⅰ1—Ⅰ3共识别出了2种亚相、14种沉积微相。综合研究认为,杏树岗葡I332 a—葡I22细层属于三角洲上分流平原相,以高弯曲分流河道砂沉积为主,点坝砂相对发育;葡Ⅰ212细层属于三角洲下分流平原相,以低弯曲分流河道砂沉积为主;葡Ⅰ211—葡Ⅰ11细层属于内前缘干枝状三角洲沉积。该区沉积相的精细研究,为该区下一步油气的勘探与开发奠定了基础。
Based on the theory of high accuracy sequence stratigraphy,this paper reconstructs the sublayer units deposition model of the Putaohua oil layer group PⅠ332a-PⅠ11 thin layer of Yaojia Formation 1st section from Xingshugang area of Daqing Changyuan in Songliao basin,which comprehensively uses various data such as core analysis,seismic data,well logs and analysis test data.Our analysis suggests that there is a "panting uplift action"(the so-called panting is a phenomenon that the underlying uplift center migrates wavelike) in Xingbei oilfield,which is the internal dynamic factor of meandering composite belt swings regularly.Guided by this theory,the plane distribution patterns of every sublayer sedimentary microfacies units were rebuilt in this area.There are 2 sub-facies and 14 microfacies types were recognized from main oil layers PI1-PI3 in plane.Comprehensive research shows that the PI332a-I22 thin layer units of Xingshugang oilfield are the upper distributary plain subfacies,where high bending distributary channel sand is the main part and the point bar relatively develop.PI212 thin layer is the lower distributary plain subfacies,where low bending distributary channel sand is the main part.PI11-PI211 thin layer is the dendritic inner front delta deposition.The detailed study of sedimentary facies in this area laid a foundation for oil and gas exploration and development.
Based on the theory of high accuracy sequence stratigraphy,this paper reconstructs the sublayer units deposition model of the Putaohua oil layer group PⅠ332a-PⅠ11 thin layer of Yaojia Formation 1st section from Xingshugang area of Daqing Changyuan in Songliao basin,which comprehensively uses various data such as core analysis,seismic data,well logs and analysis test data.Our analysis suggests that there is a "panting uplift action"(the so-called panting is a phenomenon that the underlying uplift center migrates wavelike) in Xingbei oilfield,which is the internal dynamic factor of meandering composite belt swings regularly.Guided by this theory,the plane distribution patterns of every sublayer sedimentary microfacies units were rebuilt in this area.There are 2 sub-facies and 14 microfacies types were recognized from main oil layers PI1-PI3 in plane.Comprehensive research shows that the PI332a-I22 thin layer units of Xingshugang oilfield are the upper distributary plain subfacies,where high bending distributary channel sand is the main part and the point bar relatively develop.PI212 thin layer is the lower distributary plain subfacies,where low bending distributary channel sand is the main part.PI11-PI211 thin layer is the dendritic inner front delta deposition.The detailed study of sedimentary facies in this area laid a foundation for oil and gas exploration and development.
引文
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[2]曾溅辉,郑和荣,王宁.东营凹陷岩性油气藏成藏动力学特征[J].石油与天然气地质,1998,19(4):326-329.
[3]聂逢君.层序地层学的起源及其发展[J].铀矿地质,2001,17(4):193-203.
[4]邓宏文.美国层序地层研究中的新学派———高分辨率层序地层学[J].石油与天然气地质,1995:16(2):110-118.
[5]张云峰.源岩内岩性油气藏形成的模拟实验及机理分析[J].实验室研究与探索,2001,20(2):103-106.
[6]解习农.断陷盆地构造作用与层序样式[J]地质论评,1996,42(3):398-412.
[7]梁正中.松辽盆地大庆长垣以东地区深层断陷构造特征及成因分析[J].地质与资源,2010,19(2):93-98.
[8]吕晓光,赵翰卿,付志国.河流相储层平面连续性精细描述[J].石油学报,1997,18(2):66-71.
[9]马立祥.砂岩油气储层构形分析及其在国内的应用前景[J].天然气地球科学,1992,3(2):11-16.
[10]Ma Lixiang.Sandstone oil-gas reservoir configuration analysis andapplication prospect[J].Earth Science,1992,3(2):11-16.
[11]穆龙新,贾爱林,黄石岩,等.河流-三角洲储层露头和现代河流沉积综合研究[R].北京:石油勘探开发科学研究院,1998:1-102.
[12]单敬福,王峰,孙海雷,等.同沉积构造组合模式下的沉积层序特征及其演化[J].地质论评,2010,56(3):428-441.
[13]单敬福,王峰,孙海雷,等.蒙古国境内贝尔湖凹陷早白垩纪沉积充填演化与同沉积断裂的响应[J].吉林大学学报:地球科学版,2010,40(3):509-518.
[14]杨玉芳,钟建华,司维柳,等.松辽盆地北部他拉哈—齐家地区姚一段沉积与成藏特征再认识[J].现代地质,2010,24(2):301-310.
[15]鲁超,焦养泉,吴立群,等.渤海湾盆地歧北凹陷古近系沙二段复合三角洲内部结构及空间演化[J].现代地质,2010,24(2):311-320.
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