Differential hydrocarbon enrichment and controlling factors in passive margin basins of the Arabian Plate
-
摘要: 通过对阿拉伯板块被动陆缘盆地内含油气系统的系统表征和类比分析,结合中东地区油气田最新资料和前人研究成果,揭示阿拉伯板块被动陆缘盆地构造沉积演化、源盖成藏要素和油气富集的相关关系,探索盆地油气差异富集的主控因素。阿拉伯板块被动陆缘盆地群发育内克拉通、弧后、被动陆缘和活动陆缘4个超级含油气系统,其中被动陆缘和内克拉通超级含油气系统油气最为富集;区域上油气主要富集于中阿拉伯盆地和鲁卜哈利盆地,层系上石油主要储集于白垩系和侏罗系,而天然气则主要富集于二叠系和三叠系;阿拉伯板块被动陆缘盆地群油气的差异富集主要受3个因素的控制,即优质烃源岩的展布与盆地的正向构造带控制油气的区域分布,区域盖层控制油气的层系分布。Abstract: The integrated analyses, classification and comparison of petroleum systems, combined with the latest oil and gas field data from the Middle East and the previous research results, indicate how tectonic-depositional evolution, source rocks and seals, and petroleum resource endowment are inter-linked. The impacts of these factors on the enrichment of petroleum resources could be established. There are four super petroleum systems in the passive margin basins of the Arabian Plate, namely, the intra-craton, the back-arc, the passive margin and the active margin, among which the passive margin and intra-craton super petroleum systems are the most significant. Regionally, oil and gas in the study area are mainly concentrated in the Central Arabian Basin and the Rub' Al Khali Basin. Stratigraphically, oil is mainly reservoired in the Cretaceous and Jurassic whereas the gas in the Permian and Triassic. The diffe-rential enrichment of hydrocarbons is mainly controlled by three factors: the distribution of high-quality effective source rocks and the positive structural trends of basins, which have a dominant control on the regional distribution of oil and gas, and the regional seals, which govern the stratigraphic distribution of oil and gas.
-
表 1 阿拉伯板块各被动陆缘盆地探明和控制储量特征[7-10]
Table 1. Proved and probable reserve characteristics of passive margin basins of the Arabian Plate
盆地 石油/MMbbl 天然气/Tcf 凝析油/MMbbl 油气当量/MMboe 占比/% 油气田/个 大型油气田/个 特大型油气田/个 西阿拉伯 4 355.7 18.9 355.4 7 858.0 0.6 187 1 0 维典 23 618.9 12.1 5.0 25 644.0 2.0 30 9 1 中阿拉伯 627 545.0 2 174.8 61 137.9 1 051 143.5 83.2 194 88 28 鲁卜哈利 119 602.9 292.6 9 985.2 178 356.6 14.1 136 35 6 合计 775 122.4 2 498.4 71 483.5 1 263 002.2 100 547 133 35 表 2 阿拉伯板块被动陆缘盆地不同超级含油气系统探明和控制储量分布
Table 2. Proved and probable reserve distribution of different super petroleum systems of passive margin basins of the Arabian Plate
超级含油气系统 石油/MMbbl 天然气/Tcf 凝析油/MMbbl 油气当量/MMboe 储量占比/% 油气藏/个 石油 天然气 凝析油 内克拉通 9 585.1 1 829.2 55 505.6 369 951.8 2.6 82.4 15.0 166 弧后 1 010.4 11.2 114.3 2 982.9 33.4 62.7 3.9 126 被动陆缘 758 417.3 653.3 15 859.4 883 160.6 85.9 12.3 1.8 911 活动陆缘 6 109.6 4.8 4.2 6 906.9 89.1 10.8 0.0 95 合计 775 122.4 2 498.4 71 483.5 1 263 002.2 61.4 33.0 5.7 1 298 表 3 阿拉伯板块被动陆缘盆地各超级含油气系统主要烃源岩特征
Table 3. Characteristics of main source rocks of each super petroleum system of passive margin basins of the Arabian Plate
超级含油气系统 地层 岩相 w(TOC)/% 干酪根 成熟度 内克拉通 下志留统Qalibah组
Qusaiba段海相页岩 Ro=2.0~6.2 Ⅱ型 Ro=0.7%~2.5% 弧后 三叠系Mulussa群 海相—潟湖相泥岩 8~9(均值) Ⅰ型 生油窗—过成熟 被动陆缘 上侏罗统Tuwaiq组、Diyab组、Hanifa组和Dukhan组 陆架内静水盆地泥质、沥青质灰泥石灰岩 3~12.5 Ⅱ型和Ⅲ型 生油窗 下白垩统Khatiyah和Shilaif组 陆架内静水盆地泥质、沥青质灰泥石灰岩和页岩 1~15 Ⅱ型 Ro < 0.9% 活动陆缘 上白垩统Shiranish组 海相沥青质石灰岩和泥灰岩 3~14.3 Ⅱ型 表 4 阿拉伯板块被动陆缘各盆地内不同超级含油气系统探明和控制储量分布
Table 4. Proved and probable reserve characteristics of different super petroleum systems in different basins of passive margin basins of the Arabian Plate
盆地 内克拉通超级含油气系统 弧后超级含油气系统 被动陆缘超级含油气系统 活动陆缘超级含油气系统 油气当量/MMboe 占比/% 油气当量/MMboe 占比/% 油气当量/MMboe 占比/% 油气当量/MMboe 占比/% 西阿拉伯 2 327.1 0.7 1 489.9 51.8 446.2 0.1 4 224.9 62.2 维典 731.3 25.4 24 879.4 2.8 中阿拉伯 355 446.9 95.9 461.5 16.1 692 355.2 78.4 2 559.0 37.8 鲁卜哈利 12 517.8 3.4 191.0 6.6 165 370.7 18.7 1.3 合计 370 291.8 2 873.7 883 051.5 6 785.2 -
[1] BEYDOUN Z R. Arabian Plate hydrocarbon geology and potential: a plate tectonic approach[M]. AAPG Studies in Geology, 1991, 33: 77. [2] ALSHARHAN A S, NAIRN A E M. Sedimentary basins and petro-leum geology of the Middle East[M]. Amsterdam: Elsevier, 1997: 843. [3] SHARLAND P R, ARCHER R, CASEY D M, et al. Arabian Plate sequence stratigraphy[M]. Bahrain: GeoArabia Specific Publications, 2001. [4] 白国平. 波斯湾盆地油气分布主控因素初探[J]. 中国石油大学学报(自然科学版), 2007, 31(3): 28-32. https://www.cnki.com.cn/Article/CJFDTOTAL-SYDX200703005.htmBAI Guoping. A preliminary study of main control factors on oil and gas distribution in Persian Gulf Basin[J]. Journal of China University of Petroleum, 2007, 31(3)28-32. https://www.cnki.com.cn/Article/CJFDTOTAL-SYDX200703005.htm [5] 贾小乐, 何登发, 童晓光, 等. 波斯湾盆地大气田的形成条件与分布规律[J]. 中国石油勘探, 2011, 16(3): 8-22. https://www.cnki.com.cn/Article/CJFDTOTAL-KTSY201103004.htmJIA Xiaole, HE Dengfa, TONG Xiaoguang, et al. Formation and distribution of giant gas fields in Persian Gulf Basin[J]. China Petroleum Exploration, 2011, 16(3): 8-22. https://www.cnki.com.cn/Article/CJFDTOTAL-KTSY201103004.htm [6] 朱伟林, 白国平, 李劲松, 等. 中东含油气盆地[M]. 北京: 科学出版社, 2014.ZHU Weilin, BAI Guoping, LI Jinsong, et al. Middle East oil & gas bearing basin[M]. Beijing: Science Press, 2014. [7] IHS. IHS basin monitor: Central Arabian province[Z]. International petroleum exploration and production database[includes data current as of January, 2017]: Database available from IHS Markit, 2017. [8] IHS. IHS basin monitor: Rub'Al Khali province[Z]. International petroleum exploration and production database[includes data current as of January, 2017]: Database available from IHS Markit, 2017. [9] IHS. IHS basin monitor: Western Arabian province[Z]. International petroleum exploration and production database[includes data current as of January, 2017]: Database available from IHS Markit, 2017. [10] IHS. IHS basin monitor: Widyan-Mesopotamia province[Z]. International petroleum exploration and production database[includes data current as of January, 2017]: Database available from IHS Markit, 2017. [11] 金之钧. 从源-盖控烃看塔里木台盆区油气分布规律[J]. 石油与天然气地质, 2014, 35(6): 763-770. https://www.cnki.com.cn/Article/CJFDTOTAL-SYYT201406005.htmJIN Zhijun. A study on the distribution of oil and gas reservoirs controlled by source-cap rock assemblage in unmodified foreland region of Tarim Basin[J]. Oil & Gas Geology, 2014, 35(6): 763-770. https://www.cnki.com.cn/Article/CJFDTOTAL-SYYT201406005.htm [12] MANN P, GAHAGAN L, GORDON M B. Tectonic setting of the world's giant oil and gas fields[M]//HALBOUTY M T. Giant oil and gas fields of the decade 1990-1999. AAPG Memoir, 2003: 15-105. [13] 贾东, 武龙, 闫兵, 等. 全球大型油气田的盆地类型与分布规律[J]. 高校地质学报, 2011, 17(2): 170-184. https://www.cnki.com.cn/Article/CJFDTOTAL-GXDX201102006.htmJIA Dong, WU Long, YAN Bing, et al. Basin types and distribution of the global giant oil and gas fields[J]. Geological Journal of China Universities, 2011, 17(2): 170-184. https://www.cnki.com.cn/Article/CJFDTOTAL-GXDX201102006.htm [14] HUSSEINI M I. Tectonic and depositional model of late Precambrian-Cambrian Arabian and adjoining plates[J]. AAPG Bulletin, 1989, 73(9): 1117-1131. [15] BRADSHAW M. Australian petroleum systems[J]. PESA Journal, 1993(21): 43-53. [16] MAHMOUD M D, VASLET D, HUSSEINI M I. The Lower Silurian Qalibah Formation of Saudi Arabia: an important hydrocarbon source rock[J]. AAPG Bulletin, 1992, 76(10): 1491-1506. [17] JONES P J, STUMP T E. Depositional and tectonic setting of the Lower Silurian hydrocarbon source rock facies, Central Saudi Arabia[J]. AAPG Bulletin, 1999, 83(2): 314-332. [18] KING W K. Geology of the Permian to Ordovician clastic reservoirs of the Abu Jifan/Farhah oil fields, Saudi Arabia[C]//Middle East Petroleum Geosciences II Geo-94, Bahrain: Gulf Petrolink, 1995: 593-604. [19] AL-JALLAL I A. The Khuff Formation: its regional reservoir potential in Saudi Arabia and other Gulf countries; depositional and stratigraphic approach[C]//Middle East petroleum geosciences Geo-94, Bahrain: Gulf Petrolink, 1995: 103-119. [20] GUIRAUD R, ISSAWI B, BOSWORTH W. Phanerozoic history of Egypt and surrounding areas[M]//ZIEGLER P A, CAVAZZA W, ROBERTSON A H F, et al. Peri-Tethys memoir 6: Peri-Tethyan Rift/Wrench basins and passive margins. Paris: Mémoires du Muséum National d'Histoire Naturelle, 2001: 1-20. [21] AL-ASWAD A A. Petrology and provenance of Dhruma Formation (Middle Jurassic) in south central Saudi Arabia[C]//Middle East petroleum geosciences Geo-94, Bahrain: Gulf Petrolink, 1995: 65-73. [22] MEYER F O, PRICE R C. A new Arab-D depositional model, Ghawarfield, Saudi Arabia[M]//Middle East OilShow. Bahrain: SPE, 1993: 465-474. [23] BOUROULLEC J, MEYER A. Sedimentologic and diagenetic model of the Arab Formation (Qatar): reservoir implications[C]//{Middle East Petroleum Geosciences Geo-94, Bahrain: Gulf Petrolink, 1995: 236-246. [24] ALSHARHAN A S. Sequence stratigraphy and source rock potential of Upper Jurassic DiyabFormation in the United Arab Emirates[C]. Houston, Texas, AAPG Annual Meeting, 2002: 1. [25] ALSHARHAN A S. Depositional setting of the Upper Jurassic Hith anhydrite of the Arabian Gulf: an analog to Holocene evaporites of the United Arab Emirates and Lake MacLeod of western Australia[J]. AAPG Bulletin, 1994, 78(7): 1075-1096. [26] 李运振, 张鑫, 信石印, 等. 波斯湾盆地演化与超大型油气田形成[J]. 石油实验地质, 2019, 41(4): 548-559. doi: 10.11781/sysydz201904548LI Yunzhen, ZHANG Xin, XIN Shiyin, et al. Evolution of Persian Gulf Basin and formation of super-large oil and gas fields[J]. Petroleum Geology & Experiment, 2019, 41(4): 548-559. doi: 10.11781/sysydz201904548 [27] 于洲, 丁振纯, 王利花, 等. 鄂尔多斯盆地奥陶系马家沟组五段膏盐下白云岩储层形成的主控因素[J]. 石油与天然气地质, 2018, 39(6): 1213-1224. https://www.cnki.com.cn/Article/CJFDTOTAL-SYYT201806012.htmYU Zhou, DING Zhenchun, WANG Lihua, et al. Main factors controlling formation of dolomite reservoir underlying gypsum-salt layer in the 5 th member of Ordovician Majiagou Formation, Ordos Basin[J]. Oil & Gas Geology, 2018, 39(6): 1213-1224. https://www.cnki.com.cn/Article/CJFDTOTAL-SYYT201806012.htm [28] 饶勇, 阳怀忠, 郭志峰. 南加蓬次盆盐下油气分布规律及勘探方向[J]. 断块油气田, 2018, 25(4): 440-445. https://www.cnki.com.cn/Article/CJFDTOTAL-DKYT201804007.htmRAO Yong, YANG Huaizhong, GUO Zhifeng. Hydrocarbon distribution regularity and exploration trend of pre-salt section in South Gabon sub-basin[J]. Fault-Block Oil and Gas Field, 2018, 25(4): 440-445. https://www.cnki.com.cn/Article/CJFDTOTAL-DKYT201804007.htm