北黄海盆地上侏罗统烃源岩测井评价
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摘要
北黄海盆地尚处于勘探早期,盆地内烃源岩厚度巨大,但钻井取心较少,测试样品有限,难于对该区的烃源岩条件作出整体评价。文中结合地层沉积特征和地球化学测试数据,利用Δlog R技术,根据有机质在测井曲线上的响应特征,考虑岩性组合的差异,建立了适合研究区不同岩性组合的2种有机质丰度测井解释模型,获得钻井剖面上连续分布的总有机碳质量分数信息。研究表明:北黄海盆地东部坳陷上侏罗统烃源岩发育,上部J3SQ2层序中烃源岩厚度50~300 m,坳陷中心总有机碳质量分数大部分高于1.5%;下部J3SQ1层序中烃源岩厚度50~200 m,总有机碳质量分数0.5%~2.0%。2套层序中烃源岩总有机碳质量分数均表现出由坳陷中心向四周降低的特征。整体上,研究区上侏罗统烃源岩以中等烃源岩为主,具有生成油气的物质基础,邻近生烃中心的构造带应具有较好的勘探前景。
The North Yellow Sea Basin is still in the early stage of exploration, in which the thickness of the source rocks is considerable. But it is difficult to overall evaluate the source rocks conditions with the limited core test samples. Based on the stratigraphic sedimentary characteristics and geochemical test data, according to the response characteristics of organic matter on logging curve, two TOC logging interpretation models for different lithology combination were built using Δlog R technology. The organic carbon contents of the continuous distribution in the drilling wells were obtained. The research results show that the thickness of the source rocks in J_3SQ_2 ranges from 50 to 300 m. Major TOC contents reach 1.5% in the depression center. The thickness of source rocks in J_3SQ_1 ranges from 50 to 200 m and the TOC contents range from 0.5% to 2.0%. From the depression center to the surrounding, TOC contents decrease gradually. In summary, the Upper Jurassic source rocks in the North Yellow Sea Basin can be considered as medium source rocks and have the material basis for the formation of oil and gas. So the targets close to the main "hydrocarbon kitchen" can be the favorable targets in the further exploration.
The North Yellow Sea Basin is still in the early stage of exploration, in which the thickness of the source rocks is considerable. But it is difficult to overall evaluate the source rocks conditions with the limited core test samples. Based on the stratigraphic sedimentary characteristics and geochemical test data, according to the response characteristics of organic matter on logging curve, two TOC logging interpretation models for different lithology combination were built using Δlog R technology. The organic carbon contents of the continuous distribution in the drilling wells were obtained. The research results show that the thickness of the source rocks in J_3SQ_2 ranges from 50 to 300 m. Major TOC contents reach 1.5% in the depression center. The thickness of source rocks in J_3SQ_1 ranges from 50 to 200 m and the TOC contents range from 0.5% to 2.0%. From the depression center to the surrounding, TOC contents decrease gradually. In summary, the Upper Jurassic source rocks in the North Yellow Sea Basin can be considered as medium source rocks and have the material basis for the formation of oil and gas. So the targets close to the main "hydrocarbon kitchen" can be the favorable targets in the further exploration.
引文
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[19]刘传平,钟淑敏,谢鹏,等.大庆油田高台子致密油测井评价方法研究[J].断块油气田,2016,23(1):46-51.
[20]赵俊峰,魏昭冰,范瑞虹.苏里格气层测井识别与评价研究[J].断块油气田,2004,11(1):77-80.
[21]赵永强,张子海,王明发,等.临南油田夏52断块高泥质砂岩油层测井解释模型的建立与应用[J].断块油气田,2003,10(5):40-43.
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[23]李松峰,毕建霞,曾正清,等.普光地区须家河组烃源岩地球物理预测[J].断块油气田,2015,22(6):705-710.
[24]苗春欣.烃源岩排流体特征及对近源油藏成藏的影响:以东营凹陷北部砂砾岩体为例[J].断块油气田,2016,23(4):409-413.
[2]李文勇,曾祥辉,黄家坚.北黄海中、新生代盆地:残留盆地还是叠合盆地[J].地质学报,2009,83(9):1269-1274.
[3]蔡乾忠.横贯黄海的中朝造山带与北、南黄海成盆成烃关系[J].石油与天然气地质,2005,26(2):185-196.
[4]王后金,王嘹亮,冯常茂.北黄海盆地的成盆动力学机制探讨[J].石油天然气学报,2014,36(5):1-7.
[5]MASSOUD M S,KILLOP S D,SCOTT A C,et al.Oil source rock potential of the lacustrine Jurassic Sim Uuju Formation,West Korea Bay Basin:partⅠ:Oil-source rock correlation and environment of deposition[J].Journal Petroleum Geology,1991,14(4):365-386.
[6]MASSOUD M S,SCOTT A C,KILLOP S D,et al.Oil source rock potential of the lacustrine Jurassic Sim Uuju Formation,West Korea Bay Basin:partⅡ:Nature of the matter and hydrocarbon-generation history[J].Journal Petroleum Geology,1993,16(3):265-284.
[7]陈玲,白志琳,李文勇.北黄海盆地中新生代沉积坳陷特征及其油气勘探方向[J].石油物探,2006,45(3):319-323.
[8]刘金萍,王改云,杜民,等.北黄海盆地东部坳陷中生界烃源岩特征[J].中国海上油气,2013,25(4):12-16.
[9]刘金萍,王嘹亮,简晓玲,等.北黄海盆地中生界原油特征及油源初探[J].新疆石油地质,2013,34(5):515-518.
[10]袁彩萍,徐思煌,薛罗.珠江口盆地惠州凹陷主力烃源岩测井预测及评价[J].石油实验地质,2014,36(1):110-116.
[11]王建,王权,钟雪梅,等.二连盆地优质烃源岩发育特征及成藏贡献[J].石油实验地质,2015,37(5):641-647.
[12]韩双彪,张金川,黄卫东,等.吐哈盆地烃源岩有机碳质量分数测井定量预测模型[J].断块油气田,2012,19(3):406-408.
[13]杨少春,王娜,李明瑞,等.鄂尔多斯盆地崇信地区三叠系延长组烃源岩测井评价[J].天然气地球科学,2013,24(3):470-476.
[14]王贵文,朱振宇,朱广宇.烃源岩测井识别与评价方法研究[J].石油勘探与开发,2002,29(4):50-53.
[15]王方雄,侯英姿,夏季.烃源岩测井评价新进展[J].测井技术,2002,26(2):89-93.
[16]何希鹏,张青.测井资料在江陵凹陷烃源岩评价中的应用[J].断块油气田,2010,17(5):637-641.
[17]钱克兵,彭宇,王圣柱,等.东营凹陷孔二段烃源岩特征及测井评价[J].断块油气田,2006,13(5):15-17.
[18]焦翠华,王清辉,徐怀民,等.准东地区北部二叠系致密油藏烃源岩测井评价[J].新疆石油地质,2013,34(5):524-527.
[19]刘传平,钟淑敏,谢鹏,等.大庆油田高台子致密油测井评价方法研究[J].断块油气田,2016,23(1):46-51.
[20]赵俊峰,魏昭冰,范瑞虹.苏里格气层测井识别与评价研究[J].断块油气田,2004,11(1):77-80.
[21]赵永强,张子海,王明发,等.临南油田夏52断块高泥质砂岩油层测井解释模型的建立与应用[J].断块油气田,2003,10(5):40-43.
[22]孙娜.辽河油田滩海地区油气层识别及评价方法[J].断块油气田,2007,14(5):85-87.
[23]李松峰,毕建霞,曾正清,等.普光地区须家河组烃源岩地球物理预测[J].断块油气田,2015,22(6):705-710.
[24]苗春欣.烃源岩排流体特征及对近源油藏成藏的影响:以东营凹陷北部砂砾岩体为例[J].断块油气田,2016,23(4):409-413.