HYDROCARBON RESERVOIRS AND EXPLORATION STRATEGIES IN THE SHWEBO SUB-BASIN, MYANMAR
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摘要:
Shwebo盆地勘探多年来,储层是影响勘探成效的关键因素。研究结果表明,Shwebo盆地白垩系—古近系储层主要岩石类型为长石砂岩、石英砂岩及凝灰质砂岩;孔隙类型主要为残余粒间原生孔隙和微裂隙溶蚀孔隙。孔隙结构复杂、非均质性强以及低孔、低渗是储层的主要特征。沉积环境和成岩作用是影响储层质量的主要因素,其中,影响盆地西部岛弧带储层质量的关键因素是火山活动及成岩作用;影响Shwebo盆地内储层质量的关键因素是胶结作用及压实作用,并指出了盆地有利储层勘探区。
Abstract:In the Shwebo Sub-basin, reservoir has remained the key factor influencing exploration effectiveness for many years. The main rock types of the Cretaceous-Eocene reservoirs are dominated by sand stones, such as feldspar sandstone, quartz sandstone and tuffaceous sandstone with residual intergranular pore and dissolved microfracture pore characterized by complex structure and great heterogeneity. They are low in porosity and permeability, and the quality of reservoirs is determined by their depositional environment and diagenesis. The former includes the depositional system, volcanic activity and provenance, while the latter involves cementation, alteration and compaction. In the island arc in the west of the basin, volcanism and diagenesis are the key factors, while in the internal part of the basin, cementation and compaction dominate. Upon the study of reservoir characteristics, favorable exploration areas are further discussed.
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Key words:
- the Shwebo Sub-basin /
- reservoir /
- depositional environment /
- diagenesis /
- controlling factors
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[1] Morley C K. A tectonic model for the Tertiary evolution of strike-slip faults and rift basins in SE Asia [J]. Tectonophysics, 2002, 347(1): 189-215. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=de7b53b0e5cf363975688055feaaef09
[2] Wandrey C J. Eocene to Miocene Composite Total Petroleum System, Irrawaddy-Andaman and North Burma Geologic Provinces, Myanmar [J]. U. S. Geological Survey Bulletin, 2006, 2208-E(1):1-24. https://cn.bing.com/academic/profile?id=10d32191e81fb3a79a70728c6dec98a1&encoded=0&v=paper_preview&mkt=zh-cn
[3] 陈剑光, 刘怀山, 周军, 等.缅甸D区块构造特征与油气储层评价[J].西北油气地质, 2006, 39(1):105-114. http://d.old.wanfangdata.com.cn/Periodical/xbdz200601007
[4] Pivnik D A. Polyphase Deformation in a Fore-Arc/Back-Arc Basin, Salin Sub-basin, Myanmar (Burma) [J]. AAPG Bulletin, 1998, 82(10):1837-1856. http://archives.datapages.com/data/bulletns/1998/10oct/1837/1837.htm
[5] Mitchell A H G. Cretaceous-Cenozoic tectonic events in the western Myanmar (Burma) Assam region [J]. Journal of the Geological Society of London, 1993, 150 (6) : 1089-1102. doi: 10.1144/gsjgs.150.6.1089
[6] 赖生华, 麻建明, 廖林.缅甸中央沉降带C盆地油气勘探潜力[J].天然气工业, 2005, 25(11): 21-24. doi: 10.3321/j.issn:1000-0976.2005.11.007
[7] 赵澄林, 朱筱敏.沉积岩石学(第三版)[M].北京:石油工业出版社, 2001: 99-116.
[8] 吕鸣岗, 程永才, 袁自学, 等.石油天然气储量计算规范[S].中华人民共和国地质矿产行业标准(DZ/T 0217-2005), 北京: 中华人民共和国国土资源部. 2005: 17.
http://www.cnki.com.cn/Article/CJFDTotal-SYKT200505002.htm [9] 陈义贤, 陈文寄.辽西及邻区中生代火山岩:年代学、地球化学和构造背景[M].北京:地震出版社, 1997: 52-55.
[10] 张厚福, 方朝亮, 高先志, 等.石油地质学[M].北京:石油工业出版社, 1999: 101-111.
[11] 刘钦甫, 付正, 侯丽华, 等.海拉尔盆地贝尔凹陷兴安岭群储层粘土矿物组成及成因研究[J].矿物学报, 2008, 28(1): 43-47. doi: 10.3321/j.issn:1000-4734.2008.01.007
[12] 王宏语, 樊太亮, 肖莹莹, 等.凝灰质成分对砂岩储集性能的影响[J].石油学报, 2010, 31(3): 432-439. http://d.old.wanfangdata.com.cn/Periodical/syxb201003014
[13] 李军, 张超谟, 李进福, 等.库车前陆盆地构造压实作用及其对储集层的影响[J].石油勘探与开发, 2011, 38(1): 47-51. http://d.old.wanfangdata.com.cn/Periodical/syktykf201101006
[14] 寿建峰, 朱国华, 张惠良.构造侧向挤压与砂岩成岩压实作用[J].沉积学报, 2003, 21(1): 90-95. doi: 10.3969/j.issn.1000-0550.2003.01.014
[15] 石玉江, 肖亮, 毛志强, 等.低渗透砂岩储层成岩相测井识别方法及其地质意义[J].石油学报, 2011, 32(5): 820-828. http://d.old.wanfangdata.com.cn/Periodical/syxb201105012