澳大利亚西北大陆架Bonaparte盆地Sahul区块Elang组成岩作用

现代地质 ›› 2011, Vol. 25 ›› Issue (1): 78-84.

澳大利亚西北大陆架Bonaparte盆地Sahul区块Elang组成岩作用

卢景美，陈景阳，姜培海,谭卓

中海油研究总院，北京100027

出版日期:2011-02-24 发布日期:2011-02-27
作者简介:卢景美，女，工程师，硕士，1974年出生，石油地质学专业，主要从事海外勘探机会评估和井位目标研究中的储层评价工作。Email：lujm1@cnooc.com.cn。

Elang Sandstone Diagenesis in Sahul Block of Bonaparte Basin, Australia

LEI Jing-Mei, CHEN Jing-Yang, JIANG Pei-Hai, TAN Zhuo

CNOOC Research Institute, Beijing100027, China

Online:2011-02-24 Published:2011-02-27

摘要/Abstract

摘要：

Elang组是Bonaparte盆地Sahul区块的主要含油气层，属于浅海相三角洲前缘沉积，钻探结果表明研究区该套储层的物性呈现出“南好北差”的特点。利用铸体薄片、扫描电镜和X光衍射等多种方法和手段重点研究了Elang组砂岩的成岩作用特征。研究表明该套砂岩在区块南北的物理和化学成岩作用均不同，北部地区处于中成岩阶段的A1期，主要发育胶结、溶蚀等成岩作用；南部储层处于中成岩阶段的A2期和B期，主要发育机械压实和胶结、交代等成岩作用。这种差异成岩作用是影响储层孔隙发育的主控因素之一，也是导致储层物性北好南差的主要原因。研究这种差异性对于寻找有利储层发育区具有重要的理论价值和实际意义。

关键词: Bonaparte盆地, Sahul区块；Elang组砂岩；差异成岩作用；储层物性

Abstract:

Elang sandstone formation (deltaic to shallow marine) is the significant reservoir in the Sahul block of Bonaparte Basin. The drilling data results indicate that the reservoir property has high quality in the north and poor one in the south. This thesis studies the diagenesis of Elang sandstone by impregnated thin-section, scanning electron microscopy, X-ray diffraction and so on, and points out that the diagenesis between the north and the south in the Sahul block is quite different. The diagenesis in the north is in the middle stage of A1 and includes cementation and dissolution, whereas in the south it is from the middle stage of A2 to the middle stage of B and consists of mechanic compaction, cementation and metasomatism. The difference of diagenesis is the key factor affecting the porosity of Elang sandstone reservoir as well as resulting in the difference of reservoir quality between the north and the south. Therefore, it is highly practical and important for reservoir appraisal in studying such differences among various areas and predicting favorable reservoir.

Key words: Bonaparte Basin, Sahul block, Elang sandstone, difference of diagenesis, reservoir property

中图分类号:

TE122.2

卢景美, 陈景阳, 姜培海, 谭卓. 澳大利亚西北大陆架Bonaparte盆地Sahul区块Elang组成岩作用[J]. 现代地质, 2011, 25(1): 78-84.

LEI Jing-Mei, CHEN Jing-Yang, JIANG Pei-Hai, TAN Zhuo. Elang Sandstone Diagenesis in Sahul Block of Bonaparte Basin, Australia[J]. Geoscience, 2011, 25(1): 78-84.

参考文献

［1］Longley I M, Bussensnschuett C,Clydsdale L, et al. The North West Shelf of Australia-a Woodside perspective［M］//Keep M,Moss S. The Sedimentary Basins of Western Australia Volume 3. Perth:Petroleum Exploration Society of Australia,2002: 21-87.
［2］仗剑球，钱桂华，郭念发，等. 澳大利亚大型沉积盆地与油气成藏［M］.北京：石油工业出版社，2008：15-70.
［3］Mory A J. Regional geology of the offshore Bonaparte Basin ［M］// Purcell P G, Purcell R R. The North West Shelf, Australia: Proceedings of the Petroleum Exploration Society of Australia. Perth:Petroleum Exploration Society of Australia, 1988: 287-309.
［4］Baillie P W, Fraser T H, Hall R, et al. Geological development of eastern Indonesia and the northern Australia collision zone: A review［M］//Ellis G K, Baillie P W,Munson T J. Timor Sea Petroleum Geoscience: Proceedings of the Timor Sea Symposium.Darwin, Northern Territory： Northern Territory Geological Survey, 2003: 511-539.
［5］Keep M, Clough M, Langhi L. Neogene tectonic and structural evolution of the Timor Sea region, NW Australia［M］// Keep M, Moss S. The Sedimentary Basins of Western Australia Volume 3. Perth: Petroleum Exploration Society of Australia, 2002: 341-353.
［6］Ambrose G J. Jurassic sedimentation in the Bonaparte and northern Browse basins: new models for reservoirsource rock development, hydrocarbon charge and entrapment［M］//Ellis G K,Baillie P W, Munson T J. Timor Sea Petroleum Geoscience : Proceedings of the Timor Sea Symposium. Darwin, Northern Territory: Northern Territory Geological Survey, 2003: 125-142.
［7］赵宁，邓宏文. 珠江口盆地惠州凹陷A区块珠江组下段和珠海组滨岸—潮汐沉积储层特征及物性评价［J］.现代地质，2009,23(5):835-842.
［8］张福顺. 准噶尔盆地腹部深埋储层次生孔隙成因机理［R］. 北京：中国石油大学，2008：15-20.
［9］Rezaee M R，Tingate P P. Origin of quartz cement in the Tirrawarra sandstone, southern Cooper basin, South Australia［J］. Journal of Sedimentary Research, 1997, 67(1): 168-177.
［10］王居峰.山东东营凹陷沙四段盐下层油气成藏条件分析［J］. 现代地质，2009，23(2):313-318.
［11］刘媛媛，于炳松，朱金富，等. 辽河滩海西部凹陷古近系碎屑岩储层成岩作用及其对储层物性的影响［J］. 现代地质，2009，23(4):731-738.
［12］黄思静，黄培培，刘昊年，等. 胶结作用在深埋藏砂岩孔隙保存中的意义［J］. 岩性油气藏, 2007，19(3)：7-13.
［13］Barr D C, Kennaird A F, Fowles J, et al. Determining reservoir continuity in the Laminaria Formation by integrated geology study［J］. APPEA Journal, 2001, 41(1):415-428.