渤海蓬莱9-1中生代花岗岩储层特征及有利区带分析
Reservior Characteristics of Mesozoic Granite in Penglai 9-1 and Prediction of Potential Development Area

作者: 王凤荣 :中海油天津分公司,天津;

关键词: 蓬莱9-1油田花岗岩储层特征Penglai 9-1 Oilfield Granite Reservoir Characteristics

摘要:
渤海湾盆地蓬莱9-1油田潜山勘探获得重大突破,在花岗岩中见到较好油气显示,单井试油获得工业油气流。然而,对该套花岗岩的形成时代、产状、分布规模、岩性特征、储集空间类型、储层主控因素等并不十分清楚。本文通过对潜山钻井取心、井壁取心、岩屑的系统观察、描述以及选取样品进行单颗粒锆石U-Pb同位素定年、岩相学鉴定等测试,确定该花岗岩为中生代时期的侵入到元古宇地层中的酸性侵入体。进一步采取铸体薄片鉴定、物性分析等测试手段确定储集空间类型为破碎粒间孔、溶孔、风化收缩缝、构造裂缝等,主要以潜山风化壳油气藏为主,风化花岗岩中下部孔隙和裂缝发育较差,横向非均质性强,为岩性油气藏模式。结合测井和地震等手段,对侵入体侵入方向、侵入规模等进行了研究,为花岗岩体储量申报奠定了扎实的基础,同时,对类似蓬莱9-1花岗岩体以及结晶基岩有利储层分布研究,具有重要的借鉴意义。

Abstract: We made major breakthroughs in exploration in buried hills of Penglai 9-1 oilfield in Bohai basin. There is good oil-gas show in granite, which already forms oil-gas pools. However, there are some uncertainties in this set of granites, such as forming time, attitude, distributing scope, lithology characteristic, reservoir space types, major controlling factor of reservoir and so on. Systematic observation, description of drilling cores, sidewall cores and cuttings, zircon U-Pb dating, petrography and geochemistry studies show that the granite is a Mesozoic acid intrusion in Proterozoic strata. The analyses such as casting thinsection observation and physical property analysis show that the reservoir space types in the granite are broken intergranular pores, dissolution pores, weathering fractures, structural fractures, etc. and it is mainly a pool of weathering crust which is strongly transverse homogeneous lithologic petroleum reservoir whose lower cores and fractures develop badly. Combined with logging and seismic method, we also studied the intrusive direction and scale of the granite, which built solid foundation for declaring the reserves of oil and gas in the granite and had instructive meanings for the study of reservoir distributing in the similar Penglai 9-1 granites and crystal basement rock.

文章引用: 王凤荣 (2015) 渤海蓬莱9-1中生代花岗岩储层特征及有利区带分析。 自然科学, 3, 191-202. doi: 10.12677/OJNS.2015.34024

参考文献

[1] 谢文彦, 孟卫工, 张占文, 等. 辽河坳陷潜山内幕多期裂缝油藏成藏模式[J]. 石油勘探与开发, 2006, 33(6): 649- 652.

[2] 慕德梁. 辽河坳陷兴隆台古潜山深部油藏地质特征及勘探意义[J]. 特种油气藏, 2007, 14(3): 16-19.

[3] 邢志贵. 辽河坳陷太古宇变质岩储层研究[M]. 北京: 石油工业出版社, 2006: 1.

[4] 郭建华, 刘辰生, 吴东生, 等. 大民屯凹陷静堡西侧油气成藏条件分析[J]. 中南大学学报, 2005, 36(2): 229-334.

[5] 崔秀梅, 王建瑞, 等. 冀中坳陷新河突起变质岩油气藏成藏条件探讨[J]. 特种油气藏, 2010, 18(2): 29-33.

[6] 宋柏荣, 胡英杰, 边少之, 等. 兴隆台古潜山结晶基岩油气储层特征[J]. 石油学报, 2011, 32(1): 60-65.

[7] 夏庆龙, 周心怀, 王昕, 等. 渤海蓬莱9-1大型复合油田地质特征及发现意义[J]. 石油学报, 2013, 34(2): 15-23.

[8] 杨明慧. 渤海湾盆地潜山多样性及其成藏要素比较分析[J]. 石油与天然气地质, 2008, 29(5): 623-638.

[9] 万桂梅, 汤良杰, 周心怀, 等. 郯庐断裂带在渤海湾海域渤东地区的构造特征[J]. 石油学报, 2009, 30(3): 1-2.

[10] 龚再升, 蔡东升, 张功成. 郯庐断裂对渤海湾海域东部油气成藏的控制作用[J]. 石油学报, 2007, 28(4): 1-2.

[11] 张岳桥, 赵越, 董树文, 等. 中国东部及邻区早白垩世裂陷盆地构造演化阶段[J]. 地学前缘, 2004, 11(3): 123-133.

[12] 董树文, 张岳桥, 龙长兴, 等. 中国侏罗纪构造变革与燕山运动新诠释[J]. 地质学报, 2007, 81(11): 1449-1461.

[13] Yuan, H.L., Gao, S., Liu, X.M., Li, H.M., Detlef, G. and Wu, F.Y. (2004) Accurate U-Pb Age and Trace Element Determinations of Zircon by Laser Ablation-Inductively Coupled Plasma-Mass Spectrometry. Geostandards and Geoanalytical Research, 28, 353-370.
http://dx.doi.org/10.1111/j.1751-908X.2004.tb00755.x

[14] 吴福元, 杨进辉, 柳小明. 辽东半岛中生代花岗质岩浆作用年代学格架[J]. 高校地质学报, 2005, 11(3): 305-307.

[15] 李振宏, 郑聪斌. 古岩溶演化过程及对油气储集空间的影响[J]. 天然气地球科学, 2004, 15(3): 249-251.

[16] 王艳忠, 操应长, 等. 不整合空间结构与油气成藏综述[J]. 大地构造与成矿学, 2006, 30(3): 326-333.

[17] 吴亚军, 张守安, 等. 塔里木盆地不整合类型及其与油气藏的关系[J]. 新疆石油地质, 1998, 19(2): 101-105.

[18] 吴孔友, 查明, 等. 准格尔盆地二叠系不整合面及其油气运聚特征[J]. 石油勘探与开发, 2002, 29(2): 53-57.

[19] 邱家骧. 岩浆岩岩石学[M]. 北京: 地质出版社, 1985: 249-250.

[20] 路凤香, 桑隆健. 岩石学[M]. 北京: 地质出版社, 2002:54-55.

[21] 任延广, 王成, 等. 油气储层评价方法[M]. 北京: 石油工业出版社, 2011.

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