胶莱坳陷页岩气资源潜力评价
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摘要
胶莱坳陷位于山东省东部,是山东省中生代白垩系沉积、保存最好的地区。据胶莱坳陷中生代地层及沉积特征显示,莱阳群水南组为胶莱坳陷暗色泥页岩沉积最好的层段,也是常规油气显示层位。通过对莱阳群水南组暗色泥页岩有机地化、储集物性等进行分析研究,莱阳群水南组暗色泥页岩有机碳含量介于0.17%～2.92%之间,平均为1.04%,干酪根类型以Ⅱ型为主,镜质体反射0.54%～2.04%;认为水南组暗色泥页岩具有页岩气形成的物质基础和较好的生烃能力,有机质演化程度已进入大量生烃阶段,部分进入大量生气阶段。水南组暗色泥页岩孔隙度一般为4.0%～8.0%,脆性矿物含量大于50%,说明水南组暗色泥页岩有利于页岩气的赋存和后期压裂改造。优选了莱阳凹陷、桃村凹陷、夏格庄凹陷和诸城凹陷4个远景区,估算了页岩气原地潜在资源量为537.8×10~8m~3,为进一步工作指明了方向。
Jiaolai depression is located in the eastern part of Shandong province. It is the best deposit and preservation area of Mesozoic Cretaceous. According to the strata and sedimentary characteristics of Jiaolai depression in Mesozoic period, Shuinan formation of Laiyang group is the best layer of dark shale deposit in Jiaolai depression. It is also the conventional oil and gas display horizon. Through analysis of organic geochemical and reservoir properties of the dark mud shale in Laiyang group, the organic carbon content of the dark mud shale of Shuinan formation is 0.17%～2.92%, and the average value is 1.04%. The type of kerogen is mainly typeⅡ, and the vitrinite reflection is 0.54%～2.04%. It is believed that the dark shale of Shuinan formation has the material basis of shale gas formation and good hydrocarbon generation ability, the degree of organic matter has entered a large number of hydrocarbon generation stages, and some of them have entered a large number of gas generating stages. The porosity of dark shale in Shuinan formation is generally 4.0%～8.0%,and the content of brittle minerals is more than 50%. This indicates that dark shale in Shuinan formation is favorable for shale gas occurrence and later fracturing. Four prospective areas, such as Laiyang sag, Taocun sag, Xiagezhuang sag and Zhucheng sag have been selected., and the potential resources of shale gas have been estimated to be 537.8×10~8m~3, which indicates the direction for further work.
Jiaolai depression is located in the eastern part of Shandong province. It is the best deposit and preservation area of Mesozoic Cretaceous. According to the strata and sedimentary characteristics of Jiaolai depression in Mesozoic period, Shuinan formation of Laiyang group is the best layer of dark shale deposit in Jiaolai depression. It is also the conventional oil and gas display horizon. Through analysis of organic geochemical and reservoir properties of the dark mud shale in Laiyang group, the organic carbon content of the dark mud shale of Shuinan formation is 0.17%～2.92%, and the average value is 1.04%. The type of kerogen is mainly typeⅡ, and the vitrinite reflection is 0.54%～2.04%. It is believed that the dark shale of Shuinan formation has the material basis of shale gas formation and good hydrocarbon generation ability, the degree of organic matter has entered a large number of hydrocarbon generation stages, and some of them have entered a large number of gas generating stages. The porosity of dark shale in Shuinan formation is generally 4.0%～8.0%,and the content of brittle minerals is more than 50%. This indicates that dark shale in Shuinan formation is favorable for shale gas occurrence and later fracturing. Four prospective areas, such as Laiyang sag, Taocun sag, Xiagezhuang sag and Zhucheng sag have been selected., and the potential resources of shale gas have been estimated to be 537.8×10~8m~3, which indicates the direction for further work.
引文
[1] 刘洪营,刘德汉,肖贤明.胶莱盆地莱阳凹陷莱阳组烃源岩生烃史研究[J].天然气地球化学,2007,18(5):750-755.
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[3] 彭文泉,蒋波,王云燕,等.莱阳凹陷页岩气资源潜力前景分析[J].山东国土资源,2014,30(8):7-11.
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[8] 柳少鹏,周世新,王保忠,等.烃源岩评价参数与油岩品质指标内在关系探讨[J].天然气地球科学,2012,23(3):561-569.
[9] 张彩明,郑伦举,徐锦.不同模型试验条件下烃源岩生油气能力对比及意义[J].石油实验地质,2016,38(5):665-671.
[10] 熊德明,马万云,张明峰,等.干酪根类型及生烃潜力确定新方法[J].天然气地球科学,2014,25(6):898-905.
[11] 孙耀庭,徐守余,张世奇,等.昌潍坳陷潍北凹陷孔二段优质烃源岩成因与分布[J].地质评论,2015,61(3):587-598.
[12] 彭文泉,张春池,高兵艳,等.莱阳盆地水南组含气性研究[J].山东国土资源,2018,34(9):20-25.
[13] 何金先,段毅,张晓丽,等.鄂尔多斯盆地华庆地区延长组长8烃源岩生烃潜量评价[J].兰州大学学报(自然科学版),2011,47(6):18-22.
[14] 陈建平,李伟,倪云燕,等.四川盆地二叠系烃源岩及其天然气勘探潜力(二)——烃源岩地球化学特征与天然气资源潜力[J].天然气工业,2018,38(6):33-45.
[15] 彭文泉,廉永彪.陆相沉积盆地泥页岩含气量影响因素探讨——以潍北凹陷为例[J].山东国土资源,2017,33(7):25-30.
[16] 张水昌,胡国艺,米敬奎,等.三种成因天然气生成时限与生成量及其对深部油气资源预测的影响[J].石油学报,2013,34(S1):41-50.
[17] 李吉君,史颖琳,章新文,等.页岩油富集可采主控因素分析:以泌阳凹陷为例[J].地球学报——中国地质大学学报,2014,39(7):848-857.
[18] DZ/T0254-2014.页岩气资源/储量计算与评价技术规范[S].
[19] 蒋裕强,董大忠,漆麟,等.页岩气储层的基本特征及其评价[J].天然气工业,2010,30(10):7-12.
[20] 王社教,李登华,李建忠,等.鄂尔多斯盆地页岩气勘探潜力分析[J].地质勘探,2011,21(12):1-7.
[21] 彭文泉.潍北凹陷孔店组二段页岩气资源潜力分析[J].山东国土资源,2016,32(11):36-39.
[22] 邵玉宝.莱阳凹陷下白垩统莱阳群水南组暗色泥页岩的地质特征[J].黑龙江科技大学学报,2017,27(5):486-492.
[23] 周冰洋,赵兵,孙剑,等.贵州大方地区二桥组地层特征及沉积相分析[J].地质学刊,2017,41(1):46-53.
[24] 张春池,彭文泉,巩固,等.山东省上古生界页岩气资源潜力评价[J].山东国土资源,2018,34(8):40-45.
[2] 张增奇,张自桓,胡树庭,等.山东诸城凹陷早白垩世莱阳期古地理与沉积演化[A]//中国地质学会.“九五”全国地质科技重要成果交流会[C].北京:地质出版社,2000:574-580.
[3] 彭文泉,蒋波,王云燕,等.莱阳凹陷页岩气资源潜力前景分析[J].山东国土资源,2014,30(8):7-11.
[4] 宋明水,吴智平,戴俊生,等.胶莱坳陷原型盆地恢复及石油地质条件分析[M].东营:中国石油大学出版社,2005:1-20.
[5] 李金良.胶莱坳陷沉积分析及构造演化[D].北京:中国地质科学院,2006:2-21.
[6] 张增奇,田京祥,张春池,等.国内外页岩气研究进展及山东省页岩气资源潜力[J].山东国土资源,2012,28(10):1-6.
[7] 黄第藩,李晋超,周翥虹,等.陆相有机质演化和成烃机理[M].北京:石油工业出版社,1984:112-113.
[8] 柳少鹏,周世新,王保忠,等.烃源岩评价参数与油岩品质指标内在关系探讨[J].天然气地球科学,2012,23(3):561-569.
[9] 张彩明,郑伦举,徐锦.不同模型试验条件下烃源岩生油气能力对比及意义[J].石油实验地质,2016,38(5):665-671.
[10] 熊德明,马万云,张明峰,等.干酪根类型及生烃潜力确定新方法[J].天然气地球科学,2014,25(6):898-905.
[11] 孙耀庭,徐守余,张世奇,等.昌潍坳陷潍北凹陷孔二段优质烃源岩成因与分布[J].地质评论,2015,61(3):587-598.
[12] 彭文泉,张春池,高兵艳,等.莱阳盆地水南组含气性研究[J].山东国土资源,2018,34(9):20-25.
[13] 何金先,段毅,张晓丽,等.鄂尔多斯盆地华庆地区延长组长8烃源岩生烃潜量评价[J].兰州大学学报(自然科学版),2011,47(6):18-22.
[14] 陈建平,李伟,倪云燕,等.四川盆地二叠系烃源岩及其天然气勘探潜力(二)——烃源岩地球化学特征与天然气资源潜力[J].天然气工业,2018,38(6):33-45.
[15] 彭文泉,廉永彪.陆相沉积盆地泥页岩含气量影响因素探讨——以潍北凹陷为例[J].山东国土资源,2017,33(7):25-30.
[16] 张水昌,胡国艺,米敬奎,等.三种成因天然气生成时限与生成量及其对深部油气资源预测的影响[J].石油学报,2013,34(S1):41-50.
[17] 李吉君,史颖琳,章新文,等.页岩油富集可采主控因素分析:以泌阳凹陷为例[J].地球学报——中国地质大学学报,2014,39(7):848-857.
[18] DZ/T0254-2014.页岩气资源/储量计算与评价技术规范[S].
[19] 蒋裕强,董大忠,漆麟,等.页岩气储层的基本特征及其评价[J].天然气工业,2010,30(10):7-12.
[20] 王社教,李登华,李建忠,等.鄂尔多斯盆地页岩气勘探潜力分析[J].地质勘探,2011,21(12):1-7.
[21] 彭文泉.潍北凹陷孔店组二段页岩气资源潜力分析[J].山东国土资源,2016,32(11):36-39.
[22] 邵玉宝.莱阳凹陷下白垩统莱阳群水南组暗色泥页岩的地质特征[J].黑龙江科技大学学报,2017,27(5):486-492.
[23] 周冰洋,赵兵,孙剑,等.贵州大方地区二桥组地层特征及沉积相分析[J].地质学刊,2017,41(1):46-53.
[24] 张春池,彭文泉,巩固,等.山东省上古生界页岩气资源潜力评价[J].山东国土资源,2018,34(8):40-45.