南海西部深水区大气田凝析油成因与油气成藏机制&#x02014;&#x02014;以琼东南盆地陵水17-2气田为例

黄合庭; 黄保家; 黄义文; 李兴; 田辉

doi:10.11698/PED.2017.03.07

石油勘探与开发 >

2017 , Vol. 44 >Issue 3: 380 - 388

DOI: https://doi.org/10.11698/PED.2017.03.07

油气勘探

南海西部深水区大气田凝析油成因与油气成藏机制——以琼东南盆地陵水17-2气田为例

黄合庭 ,
黄保家 ,
黄义文 ,
李兴 ,
田辉

展开

1. 中海油能源发展股份有限公司工程技术分公司中海油实验中心,广东湛江 524057;
2. 中海石油（中国）有限公司湛江分公司,广东湛江 524057;
3. 中国科学院广州地球化学研究所,广州 510640

黄合庭（1980-）,男,广东阳江人,硕士,中海油能源发展股份有限公司工程技术分公司中海油实验中心工程师,主要从事石油地质实验及地球化学研究。地址：广东省湛江市坡头区22号信箱,中海油湛江实验中心,邮政编码：524057。E-mail：huanght1@cnooc.com.cn

收稿日期: 2016-04-22

修回日期: 2017-03-10

网络出版日期: 2017-05-26

基金资助

国家科技重大专项“琼东南盆地深水区大中型气田形成条件与勘探关键技术”（2016ZX05026-02）

收起

Condensate origin and hydrocarbon accumulation mechanism of the deepwater giant gas field in western South China Sea: A case study of Lingshui 17-2 gas field in Qiongdongnan Basin, South China Sea

HUANG Heting ,
HUANG Baojia ,
HUANG Yiwen ,
LI Xing ,
TIAN Hui

Expand

1. CNOOC Central Laboratory of CNOOC Engineering Tech-Drilling & Production Co., Zhanjiang 524057, China;
2. Zhanjiang Branch of CNOOC Ltd., Zhanjiang 524057, China;
3. Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China

Received date: 2016-04-22

Revised date: 2017-03-10

Online published: 2017-05-26

Fold

摘要

基于凝析油及天然气地球化学特征,结合区域地质背景,对南海西部琼东南盆地深水区陵水17-2大气田凝析油的来源与成因进行剖析,并探讨油气成藏机制。陵水17-2气田凝析油具有密度低、含蜡量低和Pr/Ph值高等特征,凝析油为烃源岩成熟阶段所生,共生天然气以高成熟的煤型气为主。油气均来自渐新统崖城组富陆源有机质烃源岩,凝析油的形成既与源岩性质有关,又与后期“气洗”改造密不可分。油窗阶段生成的轻质油气聚集于储集层中后被晚期大规模注入的高成熟天然气“气洗”发生强烈的蒸发分馏。崖城组具备丰富的气源,底辟断裂构成有利的油气运移通道,油气两期充注成藏。中央峡谷发育的中新统黄流组浊积砂岩岩性圈闭及更靠近烃源灶的古近系构造圈闭是下步油气勘探的有利区域。图12参31

关键词： 南海西部; 深水区; 琼东南盆地; 陵水17-2气田; 凝析油; 成藏机制

本文引用格式

黄合庭 , 黄保家 , 黄义文 , 李兴 , 田辉 . 南海西部深水区大气田凝析油成因与油气成藏机制——以琼东南盆地陵水17-2气田为例[J]. 石油勘探与开发, 2017 , 44(3) : 380 -388 . DOI: 10.11698/PED.2017.03.07

Abstract

Based on the geochemical characteristics of condensates and gases, in combination with geological background, the origin and formation of condensate and oil-gas accumulation mechanism of the deepwater Lingshui 17-2 gas field in the Qiongdongnan Basin, western South China Sea are discussed. The condensate from Lingshui 17-2 gas field has the features of low density, low wax content and high Pr/Ph value. The condensate is generated at mature stage while the co-existing gas is dominated by high mature coal-derived gas. The oil and gas are derived from the Oligocene Yacheng Formation source rocks. The formation of the condensate is related not only to the source rock, but also to the later “gas-washing”. The light oil and gas which was generated at oil-window stage and accumulated in reservoirs have strong reaction of evaporation fractionation during “gas-washing” by high mature natural gas injected largely at later period. The Yacheng source rocks provided sufficient oil and gas, diapiric fractures formed migration paths for oil and gas, and two stages of hydrocarbons charged and accumulated. The Miocene Huangliu Formation turbidite sandstones lithologic trap and Paleogene structural trap close to source Kitchen in the central canyon have favorable oil-gas exploration potential.

Key words： western South China Sea; deepwater area; Qiongdongnan Basin; Lingshui 17-2 gas field; condensate; petroleum accumulation mechanism

参考文献

[1] 黄保家, 王振峰, 梁刚. 琼东南盆地深水区中央峡谷天然气来源及运聚模式[J]. 中国海上油气, 2014, 26(5): 8-14.
HUANG Baojia, WANG Zhenfeng, LIANG Gang. Natural gas source and migration-accumulation pattern in the central canyon, the deep water area, Qiongdongnan Basin[J]. China Offshore Oil and Gas, 2014, 26(5): 8-14.
[2] 梁刚, 甘军, 李兴. 琼东南盆地陵水凹陷天然气成因类型及来源[J]. 中国海上油气, 2015, 27(4): 47-53.
LIANG Gang, GAN Jun, LI Xing. Genetic types and origin of natural gas in Lingshui sag, Qiongdongnan Basin[J]. China Offshore Oil and Gas, 2015, 27(4): 47-53.
[3] WANG Z F, SUN Z P, ZHANG D J, et al. Geology and hydrocarbon accumulation in the deepwater of the Northwestern South China Sea-with focus on natural gas[J]. Acta Oceanologica Sinica, 2015, 34(10): 57-70.
[4] HAVEN H L, LEEUW J W, RULLK J, et al. Restricted utility of the pristane/phytane ratio as a palaeoenvironmental indicator[J]. Nature, 1987, 330(6149): 641-643.
[5] PETERS K E, WALTERS C C, MOLDOWAN J M. The biomarker guide[M]. Cambridge: Cambridge University Press, 2005.
[6] LI M, LIN R, LIAO Y, et al. Organic geochemistry of oils and condensates in the Kekeya field, Southwest Depression of the Tarim Basin, China[J]. Organic Geochemistry, 1999, 30(1): 15-37.
[7] LI M, BAO J, LIN R, et al. Revised models for hydrocarbon generation, migration and accumulation in Jurassic coal measures of the Turpan Basin, NW China[J]. Organic Geochemistry, 2001, 32(9): 1127-1152.
[8] CHENG K M, JIN W M, HE Z H, et al. Application of sesquiterpanes to the study of oil-gas source: The gas-rock correlation in the Qiongdongnan Basin[J]. Journal of Asian Earth Sciences, 1991, 5(13): 189-195.
[9] 王铁冠. 生物标志物地球化学研究[M]. 武汉: 中国地质大学出版社, 1990.
WANG Tieguan. Study on biomarker geochemistry[M]. Wuhan: China University of Geosciences Press, 1990.
[10] 程顶胜, 韩德馨. 中国泥盆纪煤生物标志物组成及四环二萜烷的成因[J]. 石油勘探与开发, 1997, 24(5): 42-46.
CHENG Dingsheng, HAN Dexin. Composition of biomarkers in Devonian coals of China and genesis of tetracyclic diterpenoids[J]. Petroleum Exploration and Development, 1997, 24(5): 42-46.
[11] WOOLHOUSE A D, OUNG J N, PHILP R P, et al. Triterpanes and ring: A degraded triterpanes as biomarkers characteristic of Tertiary oils derived from predominantly higher plant sources[J]. Organic Geochemistry, 1992, 18(1): 23-31.
[12] SAMUEL O J, ANDERSEN G K, NYTOFT H P, et al. Novel tricyclic and tetracyclic terpanes in Tertiary deltaic oils: Structural identification, origin and application to petroleum correlation[J]. Organic Geochemistry, 2010, 41(12): 1326-1337.
[13] 朱扬明, 谢建明, 孙林婷,等. 珠江口盆地原油中新二环、四环萜烷的检出及其地球化学意义[J]. 地球化学, 2015, 44(4): 313-322.
ZHU Yangming, XIE Jianming, SUN Linting, et al. Identification and geochemical significances of novel bicyclic and tetracyclic terpanes in crude oils from the Pearl River Mouth Basin[J]. Geochimica, 2015, 44(4): 313-322.
[14] AARSSEN B G, ZHANG Q, LEEUW J W. An unusual distribution of bicadinanes, tricadinanes and oligocadinanes in sediments from the Yacheng gasfield, China[J]. Organic Geochemistry, 1992, 18(6): 805-812.
[15] HUANG B, XIAO X M, LI X X. Geochemistry and origins of natural gases in the Yinggehai and Qiongdongnan Basins, offshore South China Sea[J]. Organic Geochemistry, 2003, 34(7): 1009-1025.
[16] RADKE M, WELTE D H, WILLSCH H. Geochemical study on a well in the Western Canada Basin: Relation of the aromatic distribution pattern to maturity of organic matter[J]. Geochimica et Cosmochimica Acta, 1982, 46(1): 1-10.
[17] RADKE M, WILLSCH H, LEYTHAEUSER D, et al. Aromatic components of coal: Relation of distribution pattern to rank[J]. Geochimica et Cosmochimica Acta, 1982, 46(10): 1831-1848.
[18] TISSOT B P, WELTE D H. Petroleum formation and occurrence[M]. Berlin: Springer, 1984.
[19] THOMPSON K F. Fractionated aromatic petroleum and the generation of gas-condensates[J]. Organic Geochemistry, 1987, 11(6): 573-590.
[20] DZOU L I, HUGHES W B. Geochemistry of oils and condensates, K Field, offshore Taiwan: A case study in migration fractionation[J]. Organic Geochemistry, 1993, 20(4): 437-462.
[21] 张泉兴, 黄保家. 南海北部大陆架西区天然气的成因类型及其成烃史[J]. 中国海上油气, 1990, 4(1): 5-13.
ZHANG Quanxing, HUANG Baojia. Genetic types and hydrocarbon generation history of natural gas in the Western shelf of the northern South China Sea[J]. China Offshore Oil and Gas, 1990, 4(1): 5-13.
[22] 何文祥, 王培荣, 潘贤庄, 等. 莺-琼盆地原油的蒸发分馏作用[J]. 石油勘探与开发, 2004, 31(4): 52-54.
HE Wenxiang, WANG Peirong, PAN Xianzhuang, et al. Evaporative fractionation of crude oils in the Ying-Qiong Basin[J]. Petroleum Exploration and Development, 2004, 31(4): 52-54.
[23] HAO F, LI S T, GONG Z S, et al. Thermal regime, interreservoir compositional heterogeneities, and reservoir-filling history of the Dongfang Gas Field, Yinggehai Basin, South China Sea: Evidence for episodic fluid injections in over-pressured basin[J]. AAPG Bulletin, 2000, 84(5): 607-626.
[24] 傅宁, 李友川, 陈桂华, 等. 东海西湖凹陷油气“蒸发分馏”成藏机制[J]. 石油勘探与开发, 2003, 30(2): 39-42.
FU Ning, LI Youchuan, CHEN Guihua, et al. Pooling mechanisms of “evaporating fractionation” of oil and gas in the Xihu depression, East China Sea[J]. Petroleum Exploration and Development, 2003, 30(2): 39-42.
[25] 马柯阳. 凝析油形成新模式: 原油蒸发分馏机制研究[J]. 地球科学进展, 1995, 10(6): 567-571.
MA Keyang. Study on petroleum evaporative fractionation: A new mechanism for the generation of condensate[J]. Advance in Earth Sciences, 1995, 10(6): 567-571.
[26] 张水昌. 运移分馏作用: 凝析油和蜡质油形成的一种重要机制[J]. 科学通报, 2000, 45(6): 667-670.
ZHANG Shuichang. Migration fractionation: An important mechanism for the formation of condensate and wax oil[J]. Chinese Science Bulletin, 2000, 45(6): 667-670.
[27] 蔡忠贤, 吴楠, 杨海军, 等. 轮南低凸起凝析气藏的蒸发分馏作用机制[J]. 天然气工业, 2009, 29(4): 21-24.
CAI Zhongxian, WU Nan, YANG Haijun, et al. Mechanism of evaporative fractionation in condensate gas reservoirs in Lunnan low salient[J]. Natural Gas Industry, 2009, 29(4): 21-24.
[28] 朱扬明, 苏爱国, 梁狄刚, 等. 柴达木盆地北缘南八仙油气藏的蒸发分馏作用[J]. 石油学报, 2003, 24(4): 31-35.
ZHU Yangming, SU Aiguo, LIANG Digang, et al. Evaporative fractionation of oil and gas reservoir in Nanbaxian area of northern Qaidam Basin[J]. Acta Petrolei Sinica, 2003, 24(4): 31-35.
[29] 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.
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.
[30] HUANG B J, TIAN H, LI X S, et al. Geochemistry, origin and accumulation of natural gases in the deepwater area of the Qiongdongnan Basin, South China Sea[J]. Marine & Petroleum Geology, 2016, 72: 254-267.
[31] 戴金星, 王庭斌, 宋岩, 等. 中国大中型天然气田形成条件与分布规律[M]. 北京: 地质出版社, 1997.
DAI Jinxing, WANG Tingbin, SONG Yan, et al. Formation and distribution of large and medium gas fields in China[M]. Beijing: Geological Publishing House, 1997.

Options

文章导航

模态框（Modal）标题

摘要

本文引用格式

Abstract

参考文献