中非穆格莱德盆地福拉凹陷构造特征与油气聚集

新疆石油地质 ›› 2007, Vol. 28 ›› Issue (3): 387-390.

中非穆格莱德盆地福拉凹陷构造特征与油气聚集

汪望泉^1,2, 窦立荣², 樊太亮¹, 李志², 张占敏²

1.中国地质大学(北京) 能源学院, 北京 100083;
2.中国石油天然气勘探开发公司, 北京 100034

收稿日期:2006-07-05 修回日期:2006-12-19 出版日期:2007-06-01 发布日期:2020-07-31
作者简介:汪望泉(1969-), 男, 河南杞县人, 高级工程师, 石油地质,(Tel) 010-62093450(E-mail) wwangquan@cnpcis.com.

Structures and Hydrocarbon Accumulation in Fula Sag of Muglad Basin in Central Africa

WANG Wang-quan^1,2, DOU Li-rong², FAN Tai-liang¹, LI Zhi², ZHANG Zhan-min²

1. Faculty of Energy Resources, China University of Geosciences, Beijing 100083; China;
2. CNODC, CNPC, Beijing 100034, China

Received:2006-07-05 Revised:2006-12-19 Online:2007-06-01 Published:2020-07-31

摘要/Abstract

摘要： 穆格莱德盆地福拉凹陷是在中非剪切带剪切应力场背景下形成的以中生代沉积为主的裂谷凹陷,裂陷活动可分为早白垩世、晚白垩世和古近纪3个阶段,主要形成南北和北西-南东走向两组断裂。福拉凹陷构造格局受南北向断裂控制,凹陷内二级构造带的发育主要受北西-南东向断裂控制。福拉凹陷构造对油气藏的控制作用,主要表现在3个方面:构造转换带是油气富集带,多旋回构造沉降形成有利的储盖组合,构造斜坡是油气聚集的有利区。

关键词: 苏丹, 穆格莱德盆地, 中非剪切带, 福拉凹陷, 构造特征, 油气聚集, 构造转换带

Abstract: Fula sag is located in northwestern Muglad basin of Sudan Republic in Central Africa. The rift sag dominated by Mesozoic deposits was formed under the setting of shear stress field in Central African shear belt. Its fault activity can be divided into three phases, namely Early Cretaceous, Late Cretaceous and Paleogene, which form two groups of faults in trends of N-S and NW-SE. The frame of Fula structure is controlled by N-S fault and the growth of second-rank structural belt within this sag by NW-SE fault. It is indicated from the structural controlling effects in Fula sag on its oil-gas reservoirs that the structural trans-zone could be as the hydrocarbon enrichment zone, the multi-cycle structural subsidence may shape the favorable reservoir-caprock assembages and the structural slope could be the favorable area of hydrocarbon accumulation.

Key words: Sudan, Muglad basin, Central African trans-shear zone, Fula sag, structural feature, hydrocarbon accumulation, structural trans-zone

中图分类号:

TE112.1

汪望泉, 窦立荣, 樊太亮, 李志, 张占敏. 中非穆格莱德盆地福拉凹陷构造特征与油气聚集[J]. 新疆石油地质, 2007, 28(3): 387-390.

WANG Wang-quan, DOU Li-rong, FAN Tai-liang, LI Zhi, ZHANG Zhan-min. Structures and Hydrocarbon Accumulation in Fula Sag of Muglad Basin in Central Africa[J]. Xinjiang Petroleum Geology, 2007, 28(3): 387-390.

参考文献

[1] Thomas J. Schull rift basins of interior sudan: petroleumexploration and discovery[J].AAPG Bulletin, 1988, 72:1 128-1 142.
[2] Tim R Mchargue, Tom L Heidrick, Jack E Livingston. Tectonostratigraphic development of the Interior Sudan rifts, Central Africa[J]. Tectonophysics, 1992, 213:187-202.
[3] Fairhead J D. Mesozoic plate tectonic reconstructions of the central South Atlantic Ocean: the role of theWest and Central African rift system[J]. Tectonophysics, 1988,155: 188-191.
[4] YANGMinghui, LIUChiyang, ZHAOHongge, et al. Sedimentary fills and hydrocarbon potential of rift basin: a case study from the Muglad basin, Sudan[J]. Journal of Northwest University(Natural Science Edition), 2001, 31(2): 162-166.
[5] Bosworth W. Mesozoic and early Tertiary rift tectonics in East Africa[J]. Tectonophysics, 1992, 209: 115-137.
[6] 魏永佩, 刘池阳. 位于巨型走滑断裂端部盆地演化的地质模型——以苏丹穆格莱德盆地为例[J]. 石油实验地质,2003, 25(2): 129-142.
[7] 窦立荣, 潘校华, 田作基, 等. 苏丹裂谷盆地油气藏的形成与分布——兼与中国东部裂谷盆地对比分析[J]. 石油勘探与开发, 2006, 33(3): 255-261.
[8] WyciskP,Klitzsch, EJasC,ReynoldsO. Intracratonal sequence development and structural contral of Phanerozoic strara in Sudan[J]. Berl. Geowiss. Abh., 1990,(120): 45-86.
[9] Davidson J P,Wilson I R. Evolution of an alkali basal-trachyte suite from Jebel Marra Volcano, Sudan, through assimilation and fractional crytallization. Earth Planet[J]. Sci. Lett., 1989(95): 141-160.
[10] BreitkeuzCFranzG, UracherG. Volcanological and tectonic to the late Cenozoic interplate evolution of the Meidob volcanic field (W. Sudan) in relation to the late Cenozoic in traplate evolution of Central Africa[A] //Intraplate Dynamic Process-Examples from Africa[C]. Workshop Tech. Univ. Berlin (Abs.), 1991.
[11] 吕延仓, 何碧竹, 王秀林, 等. 中非穆格莱德盆地Fula 凹陷石油地质特征及勘探前景[J]. 石油勘探与开发,2001, 28(3): 95-98.
[12] Morley C K, Nelson R A. Transfer zones in the east african rift systemand their relevance to hydrocarbon exploration in rifts[J]. AAPG Bulletin, 1990,74(8): 1 234-1 253.
[13] 陈发景, 汪新文, 陈昭年, 等. 伸展断陷盆地分析[M]. 北京: 地质出版社, 2004: 52-85.
[14] 窦立荣, 李志, 张宝红. 构造作用对油气藏的改造[J].新疆石油地质, 2003, 24(5): 396-399.
[15] 林畅松, 潘元林, 肖建新, 等.“构造坡折带”——断陷盆地层序分析和油气预测的重要概念[J]. 地球科学——中国地质大学学报, 2000, 25(3): 260-266.
[16] 赵文智, 邹才能, 汪泽成, 等. 富油气凹陷“满凹含油”论——内涵与意义[J]. 石油勘探与开发, 2004, 31(2): 5-13.