彭水地区五峰—龙马溪组页岩热演化史及生烃史研究——以PY1井为例

徐二社; 李志明; 杨振恒

doi:10.11781/sysydz201504494

彭水地区五峰—龙马溪组页岩热演化史及生烃史研究——以PY1井为例

doi: 10.11781/sysydz201504494

徐二社^1,2,
李志明^1,2,
杨振恒^1,2

1.
中国石化油气成藏重点实验室, 江苏无锡 214126
2. 中国石化石油勘探开发研究院无锡石油地质研究所, 江苏无锡 214126

基金项目: 中国石油化工股份有限公司科技项目"烃源岩油气形成新机制与评价体系研究"(P14040)资助。

详细信息

作者简介:
徐二社(1981-),男,硕士,工程师,从事非常规油气地质研究。E-mail:xues.syky@sinopec.com。

中图分类号: TE122.1
计量
- 文章访问数: 1096
- HTML全文浏览量: 76
- PDF下载量: 1070
- 被引次数: 0
出版历程
- 收稿日期: 2014-11-20
- 修回日期: 2015-05-28
- 刊出日期: 2015-07-28

Thermal and hydrocarbon generation history of Wufeng and Longmaxi shales in Pengshui area, eastern Sichuan Basin: A well PY1 case study

1.
Key Laboratory of Petroleum Accumulation Mechanisms, SINOPEC, Wuxi, Jiangsu 214126, China
2. Wuxi Research Institute of Petroleum Geology, SINOPEC, Wuxi, Jiangsu 214126, China

摘要

摘要: 利用盆地模拟软件BasinMod 1-D,选用古地温梯度法,采用镜质体反射率正演法厘定彭水地区各时期构造剥蚀量及古地温梯度。结果表明,该区自晚古生代以来古热流经历了低—高—低的变化过程,其古地温梯度具有相同特征;志留纪—中二叠世古地温梯度平均值约为2.5~3.0 ℃/hm;晚二叠—早白垩世古地温梯度平均值约为3.0~3.5 ℃/hm;早白垩世末期以来,古地温梯度平均值介于2.0~2.5 ℃/hm;加里东期、印支期构造抬升剥蚀量不足500 m,燕山、喜马拉雅运动构造抬升剥蚀量可达4 300 m。成烃史研究表明,彭水地区五峰—龙马溪组页岩早泥盆世进入生油门限,在晚二叠—晚三叠世进入生油高峰,在早侏罗世进入生气期,中侏罗世进入过成熟生干气阶段。后期燕山、喜马拉雅运动,致使地层抬升、剥蚀,研究区页岩气保存条件将成为下一步勘探的研究重点。
- 热演化史 /
- 古地温梯度 /
- 剥蚀量 /
- 生烃史 /
- 五峰—龙马溪组 /
- 彭水地区 /
- 川东南
Abstract: The erosion thickness and paleogeothermal gradient of the Pengshui area in the eastern Sichuan Basin during various tectonic movements were established by means of vitrinite reflectance forward modeling and basin modeling software (BasinMod 1-D). Since the Late Paleozoic, the paleo heat flow and paleogeothermal gradient in the study area first increased and then decreased. The average paleogeothermal gradients from Silurian to the Middle Permian, from the Middle Permian to the Early Cretaceous, and from the end of the Early Cretaceous until now were 25–30 °C/km, 30–35 °C/km, and 20–25 °C/km, respectively. In the Caledonian and Indosinian periods, the erosion thickness of the study area was less than 500 m; while in the Yanshanian and Himalayan periods, it reached 4 300 m. The Wufeng and Longmaxi shales entered the threshold of oil generation in the Early Devonian, and reached peak generation from the Late Permian to the Late Triassic. Gas generation started in the Early Jurassic, and over-mature dry gas was generated in the Middle Jurassic. In the following Yanshan and Himalayan movements, the study area was uplifted and eroded, which raised challenges for the preservation of shale gas.
- thermal evolution history /
- paleogeothermal gradient /
- erosion thickness /
- hydrocarbon generation history /
- Wufeng and Longmaxi formations /
- Pengshui area /
- southeastern Sichuan

HTML全文

参考文献(22)

[1]	黄文明,刘树根,马文辛,等.川东南—鄂西渝东地区下古生界页岩气勘探前景[J].地质学报,2011,30(2/3):364-371. Huang Wenming,Liu Shugen,Ma Wenxin,et al.Shale gas exploration prospect of Lower Paleozoic in southeastern Sichuan and western Hubei-eastern Chongqing areas,China[J].Geological Bulletin of China,2011,30(2/3):364-371.
[2]	王庆之,杨飞,喻永生.川东南—湘鄂西地区构造演化与页岩气保存关系分析[J].长江大学学报:自然科学版,2012,9(4):44-46. Wang Qingzhi,Yang Fei,Yu Yongsheng.The tectonic evolution and the shale gas preservation relationship analysis in southeastern Sichuan and western Hunan-Hubei areas[J].Journal of Yangtze University:Natural Science Edition,2012,9(4):44-46.
[3]	郑和荣,高波,彭勇民,等.中上扬子地区下志留统沉积演化与页岩气勘探方向[J].古地理学报,2013,15(5):645-656. Zheng Herong,Gao Bo,Peng Yongmin,et al.Sedimentary evolution and shale gas exploration direction of the Lower Silurian in Middle-Upper Yangtze area[J].Journal of Palaeogeography,2013,15(5):645-656.
[4]	郭少斌,黄磊.页岩气储层含气性影响因素及储层评价:以上扬子古生界页岩气储层为例[J].石油实验地质,2013,35(6):601-606. Guo Shaobin,Huang Lei.Gas-bearing influential factors and eva-luation of shale gas reservoir:A case study of Paleozoic shale gas reservoir in Upper Yangtze region[J].Petroleum Geology & Experiment,2013,35(6):601-606.
[5]	王志刚.涪陵页岩气勘探开发重大突破与启示[J].石油与天然气地质, 2015,36(1): 1-6. Wang Zhigang.Breakthrough of Fuling shale gas exploration and development and its inspiration[J].Oil & Gas Geology,2015,36(1):1-6.
[6]	郭正吾,邓康龄,韩永辉.四川盆地形成与演化[M].北京:地质出版社,1996:48-88. Guo Zhengwu,Deng Kangling,Han Yonghui.The formation and evolution of Sichuan Basin[M].Beijing:Geological Publ. House,1996:48-88.
[7]	马力,陈焕疆,甘克文,等.中国南方大地构造和海相油气地质[M].北京:地质出版社,2004:401-418,459-467. Ma Li,Chen Huanjiang,Gan Kewen,et al.Tectonics and marine origin petroleum geology in southern China[M].Beijing: Geolo-gical Public House,2004:401-418,459-467.
[8]	徐政语,李大成,卢文忠,等.渝东构造样式分析与成因解析[J].大地构造与成矿学,2004,28(1):15-22. Xu Zhengyu,Li Dacheng,Lu Wenzhong,et al.Pattern analyses and genetic interpretation about the geotectonics of Yudong(East Chongqing)[J].Geotectonica et Metallogenia,2004,28(1):15-22.
[9]	徐国盛,袁海锋,马永生,等.川中—川东南地区震旦系—下古生界沥青来源及成烃演化[J].地质学报,2007,81(8):1143-1152. Xu Guosheng,Yuan Haifeng,Ma Yongsheng,et al.The source of Sinian and Lower-Palaeozoic bitumen and hydrocarbon evolution in the middle and southeast of the Sichuan Basin[J].Acta Geologica Sinica,2007,81(8):1143-1152.
[10]	赵喆,钟宁宁,梁狄刚,等.中国南方含油气区构造—沉积类型及其勘探潜力[J].海相油气地质,2008,13(1):51-54. Zhao Zhe,Zhong Ningning,Liang Digang,et al.Tectonic-sedimentation types and exploration potential of prospecting oil areas in southern China[J].Marine Origin Petroleum Geology,2008,13(1):51-54.
[11]	徐政语,姚根顺,黄羚,等.中国南方海相残留盆地勘探风险分析与选区评价[J].石油实验地质,2013,35(1):9-16. Xu Zhengyu,Yao Genshun,Huang Ling,et al.Risk analysis and play evaluation of marine residual basins in South China[J].Petroleum Geology & Experiment,2013,35(1):9-16.
[12]	孙玮,刘树根,王国芝,等.川东南丁山构造震旦系—下古生界油气成藏条件及成藏过程[J].地质科技情报,2010,29(1):49-55. Sun We,Liu Shugen,Wang Guozhi,et al.Petroleum formed condition and process research for simian to Low Paleozoic at Dingshan structure in southeast of Sichuan basin[J].Geological Science and Technology Information,2010,29(1):49-55.
[13]	王东,王国芝,刘树根.川东南地区燕山期以来的隆升剥蚀历史研究[J].地质学报,2009,29(1):5-7,10. Wang Dong,Wang Guozhi,Liu Shugen.Study of history of uplift and denudation in southeast Sichuan since Yanshan Epoch[J].Acta Geologica Sinica,2009,29(1):5-7,10.
[14]	卢庆治,马永生,郭彤楼,等.鄂西—渝东地区热史恢复及烃源岩成烃史[J].地质科学,2007,42(1):189-198. Lu Qingzhi,Ma Yongsheng,Guo Tonglou,et al.Thermal history and hydrocarbon generation history in western Hubei-eastern Chongqing area[J]. Chinese Journal of Geology,2007,42(1):189-198.
[15]	袁玉松,孙冬胜,李双建,等.四川盆地加里东期剥蚀量恢复[J].地质科学,2013,48(3):581-591. Yuan Yusong,Sun Dongsheng,Li Shuangjian,et al.Caledonian erosion thickness reconstruction in the Sichuan Basin[J].Chinese Journal of Geology,2013,48(3):581-591.
[16]	袁玉松,林娟华,程心阳,等.鄂西渝东地区晚燕山—喜马拉雅期剥蚀量[J].地球物理学报,2014,57(9):2878-2884. Yuan Yusong,Lin Juanhua,Cheng Xinyang,et al.Yanshan-Himalayan denudation in Western Hubei Eastern Chongqing area[J].Chinese Journal of Geophysics,2014,57(9):2878-2884.
[17]	姜本鸿,韩庆之.川东南地区地温场形成的地质背景及温泉形成模式探讨:以四川彭水长溪坝址区温泉为例[J].现代地质,1993,7(4):485-494. Jiang Benhong,Han Qingzhi.Analysis of geological background of geothermal field and hot spring model in the south east area of Sichuan province:Taking the Changxi hot spring in Pengshui county of Sichuan province as an example[J].Geoscience,1993,7(4):485-494.
[18]	刘进.鄂西渝东地区中、古生界古地热场演化及有机质成熟史研究[D].武汉:中国地质大学,2008. Liu Jin.Geothermal field evolution and organic matter maturity history of Mesozoic and Paleozoic in western Hubei-eastern Chongqing area[D].Wuhan: China University of Geosciences,2008.
[19]	王玮,周祖翼,郭彤楼,等.四川盆地古地温梯度和中—新生代构造热历史[J].同济大学学报:自然科学版,2011,39(4):606-613. Wang Wei,Zhou Zuyi,Guo Tonglou,et al.Early Cretaceous-Paleocene geothermal gradients and Cenozoic Tectono-Thermal history of Sichuan basin[J].Journal of Tongji University:Natural Science,2011,39(4):606-613.
[20]	Sweeney J J,Burnham A K.Evaluation of a simple model of vi-trinite reflectance based on chemical kinetics[J].AAPG Bulletin,1990,74(10):1559-1570.
[21]	丰国秀,陈盛吉.岩石中沥青反射率与镜质体反射率之间的关系[J].天然气工业,1988,8(3):20-25. Feng Guoxiu,Chen Shengji.Relation between the reflectance of bitumen and vitrinite in rock[J].Natural Gas Industry,1988,8(2):20-25.
[22]	胡圣标,张容燕,周礼成.油气盆地地热史恢复方法[J].勘探家,1998,3(4):52-54. Hu Shengbiao,Zhang Rongyan,Zhou Licheng.Reconstruction of geothermal history in hydrocarbon basins[J].Petroleum Explorationist,1998,3(4):52-54.