Distribution and Evaluation of Oligocene Source Rocks in the East of  Central Depression Belt in Deep-water Area,Qiongdongnan Basin

Expand
  • 1.College of Geosciences,China University of Petroleum,Beijing 102249,China;
    2.State Key Laboratory of Petroleum Resource and Prospecting,China University of Petroleum,
    Beijing 102249,China;3.Zhanjiang Branch of CNOOC Ltd.,Zhanjiang 524057,China

Received date: 2013-05-29

  Revised date: 2013-08-06

  Online published: 2014-03-10

Abstract

Based on the prediction and determination of the distribution characteristics of thickness,maturity and organic facies of Oligocene source rocks in the east of Central Depression Belt,according to the calculation of the volume,gas generation quantity and intensity of source rocks,source rocks were comprehensively evaluated and the gas-rich sags were optimized.The results show:(1)Generally,Lingshui source rocks are thicker than those of Yacheng,and the percentages of mud in Ya-2 member and Ling-2 member are the most of all.The mud deposition centers evolved from west to east and from sporadic distribution in Yacheng Formation to regional distribution in Lingshui Formation;(2)The thermal evolution of source rocks was early in the west and late in the east, and the modern maturities of different formations are high in the west and low in the east;(3)The quality of Oligocene source rocks is better in general,in which the coal layer is excellent in gas generation capacity,and the gas generation capacity of mud is from moderate to good.The main organic facies in Yacheng Formation are shallow sea and shore,but the main organic facies in Lingshui Formation are inner and outer shallow sea;(4)Baodao Sag,Changchang Sag and Songnan Sag are all gas-rich sags.However,Baodao Sag is the best,follows by the Changchang Sag,and then by the Songnan Sag.

Cite this article

WANG Zi-song,LIU Zhen,HUANG Bao-jia,SUN Zhi-peng,YAO Zhe,CHEN Yu-hang,LIU Peng,WANG Bing . Distribution and Evaluation of Oligocene Source Rocks in the East of  Central Depression Belt in Deep-water Area,Qiongdongnan Basin[J]. Natural Gas Geoscience, 2014 , 25(3) : 360 -371 . DOI: 10.11764/j.issn.1672-1926.2014.03.360

References

[1]Li Xianghui,Wang Chengshan,Jin Wei,et al.A review on deep-sea sedimentation theory:Significances to oil-gas exploration[J].Acta Sedimentologica Sinica,2009,27(1):77-86.[李祥辉,王成善,金玮,等.深海沉积理论发展及其在油气勘探中的意义[J].沉积学报,2009,27(1):77-86.]

[2]Lei Chao,Ren Jianye,Li Xushen,et al.Structural characteristics and petroleum exploration potential in the deep-water area of the Qiongdongnan Basin,South China Sea[J].Petroleum Exploration and Development,2011,38(5):560-569.[雷超,任建业,李绪深,等.琼东南盆地深水区结构构造特征与油气勘探潜力[J].石油勘探与开发,2011,38(5):560-569.]

[3]Lin Wen,Zhou Yingquan.Progress of deep water hydrocarbon exploration worldwide and the exploration in the deepwater region of northern South China Sea[J].Geophysical Prospecting for Petroleum,2009,48(6):601-620.[林闻,周金应.世界深水油气勘探新进展与南海北部深水油气勘探[J].石油物探,2009,48(6):601-620.]

[4]Wang Zhenfeng,Li Xushen,Sun Zhipeng,et al.Hydrocarbon accumulation conditions and exploration potential in the deep-water region,Qiongdongnan Basin[J].China Offshore Oil and Gas,2011,23(1):7-13.[王振峰,李绪深,孙志鹏,等.琼东南盆地深水区油气成藏条件和勘探潜力[J].中国海上油气,2011,23(1):7-13.]

[5]Liu Zhen,Chang Mai,Zhao Yang,et al.Method of early prediction on source rocks in basins with low exploration activity[J].Earth Science Frontiers,2007,14(4):159-167.[刘震,常迈,赵阳,等.低勘探程度盆地烃源岩早期预测方法研究[J].地学前缘,2007,14(4):159-167.]

[6]Xu Huaizhi,Cai Dongsheng,Sun Zhipeng,et al.Filling characters of central submarine canyon of Qiongdongnan Basin and its significance of petroleum geology[J].Acta Geologica Sinica,2012,86(4):641-650.[许怀智,蔡东升,孙志鹏,等.琼东南盆地中央峡谷沉积充填特征及油气地质意义[J].地质学报,2012,86(4):641-650.]

[7]Gong Zaisheng.The Super Oil and Gas Fields in Offshore of China[M].Beijing:Petroleum Industry Press,1997:167-172.[龚再升.中国近海大油气田[M].北京:石油工业出版社,1997:167-172.]

[8]Tao Weixiang,He Shibin,Zhao Zhigang,et al.Reservoir distribution in deepwater area of the Qiongdongnan Basin[J].Petroleum Geology & Experiment,28(6):554-559.[陶维祥,何仕斌,赵志刚,等.琼东南盆地深水区储层分布规律[J].石油实验地质,2006,28(6):554-559.]

[9]Zhao Min,Zhang Xiaobao,Ji Liming,et al.Characteristics of tectonic evolution in the Qiongdongnan Basin and brief discussion about its controlling on reservoirs[J].Natural Gas Geoscience,2010,21(3):494-502.[赵民,张晓宝,吉利明,等.琼东南盆地构造演化特征及其对油气藏的控制浅析[J].天然气地球科学,2010,21(3):494-502.]

[10]Zhang Gongcheng.Tectonic evolution of deepwater area of northern continental marginin South China Sea[J].Acta Petrolei Sinica,2010,31(4):528-533.[张功成.南海北部陆坡深水区构造演化及其特征[J].石油学报,2010,31(4):528-533.]

[11]Li Xuxuan,Liu Baoming,Zhao Junqing.Paleogene sequence configuration,depositional filling pattern and hydrocarbon-generation potential in Qiongdongnan Basin[J].China Offshore Oil and Gas:Geology,2007,19(4):217-223.[李绪宣,刘宝明,赵俊青.琼东南盆地古近纪层序结构、充填样式及生烃潜力[J].中国海上油气:地质,2007,19(4):217-223.]

[12]Shao Lei,Li Ang,Wu Guoxuan,et al.Evolution of sedimentary environment and provenance in Qiongdongnan Basin in the northern South China Sea[J].Acta Petrolei Sinica,2010,31(4):548-552.[邵磊,李昂,吴国瑄,等.琼东南盆地沉积环境及物源演变特征[J].石油学报,2010,31(4):548-552.]

[13]Xiao Jun,Wang Hua,Jiang Hua,et al.Characteristics and controlling factors of the reservoirs of low stand system tract in Tertiary,Qiongdongnan Basin[J].Journal of Southwest Petroleum University:Science & Technology Edition,2008,30(2):9-13.[肖军,王华,姜华,等.琼东南盆地第三系低位储层特征及其控制因素[J].西南石油大学学报:自然科学版,2008,30(2):9-13.]

[14]Yuan Yusong,Yang Shuchun,Hu Shengbiao,et al.Tectonic subsidence of Qiongdongnan Basin and its main control factors[J].Chinese Journal of Geophysice,2008,51(2):376-383.[袁玉松,杨树春,胡圣标,等.琼东南盆地构造沉降史及其主控因素[J].地球物理学报,2008,51(2):376-383.]

[15]Li Wenhao,Zhang Zhihuan,Li Youchuan.Geochemical characteristics and hydrocarbon generation of Paleogene Oligocene source rocks in Qiongdongnan Basin[J].Natural Gas Geoscience,2011,22(4):700-708.[李文浩,张枝焕,李友川,等.琼东南盆地古近系渐新统烃源岩地球化学特征及生烃潜力分析[J].天然气地球科学,2011,22(4):700-708.]

[16]Cao Qiang,Ye Jiaren,Shi Wanzhong,et al.Preliminary prediction and evaluation of source rocks in low-exploration basins:A case study on the northeast sag of the Northern South Yellow Sea Basin in China[J].Acta Petrolei Sinica,2009,30(4):522-529.[曹强,叶加仁,石万忠,等.低勘探程度盆地烃源岩早期评价——以南黄海北部盆地东北凹为例[J].石油学报,2009,30(4):522-529.]

[17]Liu Wenchao,Ye Jiaren,Lei Chuang,et al.Geothermal and maturation histories modeling of the source rocks in the Ledong sag,Qiongdongnan Basin[J].Geological Science and Technology Information,2011,30(6):110-115.[刘文超,叶加仁,雷闯,等.琼东南盆地乐东凹陷烃源岩热史及成熟史模拟[J].地质科技情报,2011,30(6):110-115.]

[18]Mi Lijun,Liu Zhen,Zhang Gongcheng,et al.Early forecast and evaluation study on chief source rock in Baiyun Sag[J].Acta Sedimentologica Sinica,2007,25(1):139-146.[米立军,刘震,张功成,等.南海北部深水区白云凹陷古近系烃源岩的早期预测[J].沉积学报,2007,25(1):139-146.]

[19]Lei Chuang.Study on Hydrocarbon Accumulation Mechanism in Deep Water Areas of Qiongdongnan Basin[D].Wuhan:China University of Geosciences,2011:9-23.[雷闯.琼东南盆地深水区油气成藏机制研究[D].武汉:中国地质大学,2011:9-23.]

[20]Zhong Zhihong,Wang Liangshu,Li Xuxuan,et al.The Paleogene basin-filling evolution of Qiongdongnan Basin and its relation with seafloor spreading of the South China Sea[J].Marine Geology & Quaternary Geology,2004,24(1):29-36.[钟志洪,王良书,李绪宣,等.琼东南盆地古近纪沉积充填演化及其区域构造意义[J].海洋地质与第四纪地质,2004,24(1):29-36.]

[21]Wang Dongdong,Li Zengxue,Zhang Gongcheng,et al.Base level cycles division and switch mechanism of oligocene epoch Yacheng Formation in Qiongdongnan Basin[J].Journal of China University of Mining & Technology,2011,40(4):576-583.[王东东,李增学,张功成,等.2011.琼东南盆地渐新世崖城组基准面旋回划分与转换机制[J].中国矿业大学学报,2011,40(4):576-583.]

[22]Lin Haitao,Ren Jianye,Lei Chao,et al.Tectonic transfer zone of No.2 fault and its controls on sandbody distribution in the Qiongdongnan Basin[J].Geotectonica et Metallogenia,2010,34(3):308-316.[林海涛,任建业,雷超,等.琼东南盆地2号断层构造转换带及其对砂体分布的控制[J].大地构造与成矿学,2010,34(3):308-316.]

[23]Liu Chuanlian.Sedimentary environment and micro-sediment characteristics of Oligocene source rocks in Qiongdongnan Basin[J].Acta Petrolei Sinica,2010,31(4):573-578.[刘传联.琼东南盆地渐新统烃源岩微观沉积特征与沉积环境[J].石油学报,2010,31(4):573-578.]

[24]Mi Lijun,Wang Dongdong,Li Zengxue,et al.High-resolution sequence stratigraphic framework and coal-forming features in Yacheng Formation of Qiongdongnan Basin[J].Acta Petrolei Sinica,2010,31(4):534-541.[米立军,王东东,李增学,等.琼东南盆地崖城组高分辨率层序地层格架与煤层形成特征[J].石油学报,32010,1(4):534-541.]

[25]Liu Guangdi,Zhang Houfu,Gao Xianzhi,et al.Petroleum Geology[M].Edition 4.Beijing:Petroleum Industry Press,2009:157-160.[柳广弟,张厚福,高先志,等.石油地质学[M].第四版.北京:石油工业出版社,2009.]

[26]Huang Baojia.Gas potential and its favorable exploration areas in Qiongdongnan Basin[J].Natural Gas Industry,1999,19(1):34-39.[黄保家.琼东南盆地天然气潜力及有利勘探方向[J].天然气工业,1999,19(1):34-39.]

[27]Huang Baojia,LI Xushen,Wang Zhenfeng,et al.Source rock geochemistry and gas potential in the deep water area,Qiongdongnan Basin[J].China Offshore Oil and Gas,2012,24(4):1-7.[黄保家,李绪深,王振峰,等.琼东南盆地深水区烃源岩地球化学特征与天然气潜力[J].中国海上油气,2012,24(4):1-7.]

[28]Dai Jinxing,Song Yan.Main factors controlling the foundation of medium-giant gas fields in China[J].Science in China:Series D,1997,40(1):1-10.

Outlines

/