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《海洋地质前沿》2015,(11)
随着油气勘探程度的不断深化,非常规油气藏在油气勘探中不断被发现,在实际的勘探过程中低阻油层的储量和产量都在不断增加。低阻油层作为一种非常规储层,其含油性受多个因素影响。常规测井解释方法评价低阻油层有很大的困难。针对闵桥油田断裂构造错综复杂、油层低阻特征典型、测井解释难度大等特点,利用BP人工神经网络算法,对已知样本进行学习获得识别模式,并使用自编软件,成功识别了闵北断块阜宁组三段低阻油层。识别结果显示,该层新增油井8口,含油面积增加0.53km2,新增石油地质储量23.62万t,经济效益显著;同时深化了对该断块油气分布规律与油藏类型的认识,理论意义重要。 相似文献
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从中国第二大油田——中石化胜利油田获悉，该油田2007年共生产原油2770.08×10^4t，超额完成全年原油生产任务，超产12．08×10^4t。这一成绩是在油田综合含水90％上、可采储量采出程度78％的情况下取得的。同时，胜利油田2007年新增探明石油地质储量超过1×10^8t，这也是该油田连续第25年实现新增探明储量超亿吨。 相似文献
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我国近海探油已进入合作与自营并举,勘探与开发并进的新阶段。在1980—1986年间,我国在近海油气勘探区打探井348口。其中在渤海打井162口,东海打井12口,南海打井131口,台湾近海打井43口。目前巳有3个海上油气田投产,它们是:渤海埕北油田、北部湾涠10-3油田、台湾海峡长康油气田。总共年产石油70万吨、天然气100万立方米。7个海上油气田正在开发,即渤中28-1、渤中34-2/4、惠州21-1、绥中36-1、西江24-3、涠11-4油田、锦州20-2气田。上述油田计划打井172口,预计在高峰时年产原油500万吨、天然气5亿立方米。7个海上油气田正在进行开发可行性研究,有流花11-1、陆丰13-1、陆丰13-2、 相似文献
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到目前为止,中国海洋石油总公司在南海北部珠江口盆地东部海域,已找到石油地质储量4.5亿吨,经中外合作勘探评价,有9个油田具有商业性开采价值,现已投产的惠州211、惠州26～1两个中型油田,年生产能力为250万吨。南海西部海域已找到油田10个,气田2个,探明石油地质储量1.2亿吨,天然气1200亿立方米。 目前已知的海上大气区——南海西部莺歌海盆地和琼东南盆地,其含油气面积约9万平 相似文献
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山东省东营市地处黄河入海口,濒临渤海,地处山东半岛和辽东半岛环抱的环渤海湾中心,是环渤海经济区与黄河经济带的交汇点。东营市拥有未利用土地3013.3平方千米,其中万亩以上成片土地2232平方千米,是我国东部沿海后备土地资源最多、开发潜力最大的地区。胜利油田80%的石油地质储量和85%的产量集中在东营境内,已探明石油地质储量49.3亿吨、天然气地质储量2300亿立方米。东 相似文献
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在深水勘探活动中 ,断裂分区对原油体系的风险因子有重要意义。我们的新构造模型将注重与油气的分布、成熟及运移有关的风险 ,这些油气分布在坎普斯及桑托斯盆地富含早白垩纪湖相原油体系内。坎普斯是巴西油气最丰富的盆地。据有关资料 ,该地区已探明的石油地质储量为 2 1 60× 1 0 6 m3,约占巴西总石油储量的78% ;而该地区已探明的天然气地质储量为2 66× 1 0 9m3,约占巴西总天然气储量的 43 %。相比之下 ,桑托斯盆地的勘探程度较差 ,该区已探明的石油地质储量为 1 .0 0× 1 0 6 m3,天然气地质储量为 4.8× 1 0 9m3。坎普斯及桑托斯盆地的… 相似文献
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埕北油田具有原油黏度高、油层渗透能力强和非均质性严重等特点，水驱开发效果差，剩余油储量大，而生产平台工作时间已达到设计使用寿命，急需高效、快速的提高采收率技术。针对埕北油藏地质、流体性质和开发现状，利用仪器检测和理论分析方法，开展了聚合物溶液、三元复合体系和改性三元复合体系性质和调驱效果实验研究。结果表明，与三元复合体系相比较，添加入Cr^3＋后得到的改性三元复合体系在黏度和界面张力性质方面几乎没有发生变化，但其阻力系数和残余阻力系数有了较大幅度提高。在化学费用相近条件下，“调剖＋三元复合驱”和改性三元复合驱要比三元复合驱增油效果好，采收率增幅可以达到15％以上。推荐埕北油田采用弱碱三元复合驱，三元复合体系配方组成为“大庆超高”聚合物（CP=1600～1800mg／L）＋弱碱Na2CO3（CA=0．6％～1．0％）＋重烷基苯石油磺酸盐（Cs=0．10％～0．15％）＋有机铬（聚：Cr^3＋=120：1～240：1）”，段塞组合方式为“0．025～0．05 PV Cr^3＋聚合物凝胶＋0．12～0．15PV三元复合体系”。 相似文献
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黄海海域是我国近海目前唯一尚未获得商业性油气发现的海域,海域内发育了3个中新生代含油气盆地,目前已在北部盆地中生代泰州组地层中发现了油气显示。过去由于受资料所限,对盆地的油气资源评价,多关注于第三纪盆地,忽视了中生代盆地的油气资源远景。作者通过对南黄海北部盆地已钻遇中生代泰州组地层的钻井和过井数字地震剖面的追踪对比,结合4km×8km地震测网和重、磁资料综合解释,认为中生代盆地同样具有良好的含油气远景,特别是盆地的东北凹,中生代地层沉积厚度大,分布范围广,具有较好的油气资源远景。 相似文献
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当前国际能源供需矛盾突出,能源安全日益成为各国关注的焦点,碳酸盐勘探开发聚焦了世界的目光。主要大国出于经济和政治利益的考虑,加大对碳酸盐油气勘探开发的投入。世界碳酸盐岩油气探明可采总量为1 434.5×10^8t油当量,其中探明可采石油750.1×10^8t油当量,探明可采天然气684.4×10^8t油当量。世界碳酸盐岩油气田313个,其中油田208个,气田105个。中国碳酸盐岩探明石油15.2×10^8t油当量,探明率为6.5%,探明天然气1.36×10^8m^3,探明率为28.65%。碳酸盐岩油气勘探方法有地质法、地球物理法、地球化学勘探法、钻井法。开发成熟技术有多分支井技术、定向射孔技术、压裂酸化技术等。通过对世界碳酸盐岩资源勘探开发现状研究,实现碳酸盐岩资源优化利用,改善勘探开发效果,必将为全球碳酸盐岩资源的高水平、高效益勘探开发和可持续发展提供理论及实践依据。 相似文献
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A. Zabanbark 《Oceanology》2006,46(4):557-563
With respect of its structure, the Gulf of Mexico basin is heterogeneous. The following individual basins and subbasins can be distinguished; (1) Mississippi-Louisiana; (2) Gulf Coast within the boundaries of Texas and New Mexico; (3) Mexican Gulf Coast and adjacent system of foredeeps; (4) Yucatan subbasin; (5) Cuba-Bahamas system of foredeeps. Regional seismic studies reveal a close relationship between salt movements and sedimentation. Salt bodies represent excellent cap rocks for hydrocarbon fluids. Anticline folds termed “turtle” structures forming a system of belts appear in the deep parts of the gulf. These structures host large reserves of hydrocarbons, which are concentrated in the Paleogene-Miocene turbidite reservoirs with a porosity approximately 30% overlain by excellent cap rocks (salt, clay) with permeability exceeding 3 darcy. Three productive zones are defined: (1) the folds of the Mississippi River fan; (2) the Perdido belt of anticline folds; (3) Florida. The Paleogene and Miocene-Pliocene-Pleistocene sediments developed on the continental slopes of the Gulf of Mexico basin are the areas most promising with respect to hydrocarbon deposits. On January 1, 2006, the offshore oil production was 53 million tons and the gas production 40 billion cubic meters. Total prospective oil and gas reserves are estimated to be 5.5 billion tons and 4.7 trillion cubic meters, of which over 50% of oil and 1/3 of gas are expected to be discovered on the continental slope. 相似文献
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A. Zabanbark 《Oceanology》2008,48(1):129-137
The Californian borderland is the largest oil and gas region of the Pacific coast of the United States. Here, a series of large and minor sedimentary basins with established or inferred oil and gas bearing properties are recognized. The Californian borderland is located on a Nevadan-type active continental margin. The bodies of such margins are composed of giant accretion formations and occupy not only their underwater parts but also vast land areas. The accretion formations are dominated by rocks of a deep-water origin. The Californian borderland represents a system of basins and ranges that compose the underwater margin and the Coastal Ranges of California and the basement within the Great Valley. In the depressions of the accretion orogen, which are small in size but feature high subsidence rates, significant thicknesses of deposits are accumulated (up to 6?8 km). In the depressions of the Californian borderland, they are represented by young Neogene (rarer Eocene-Oligocene) formations of mainly terrigenous or siliceous-terrigenous compositions. The active tectonic regime resulted in a sharp reduction of the age range of the oil and gas bearing deposits, which are represented only by Late Cretaceous and Cenozoic rocks. Full-scale oil and gas production here is performed in the Santa Barbara-Ventura and Santa Maria basins. The principal oil and gas bearing unit is the Monterrey Formation of the Middle Miocene. By January 2006, the production on the Californian borderland comprised about 17.8 million tons of oil and over 1 billion m3 of gas. Up to 1.4 billion tons of oil and 200 billion m3 of gas reserves are regarded to be not recovered on the Pacific coast of the United States in the region of the Californian borderland. 相似文献
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The Santos Basin, situated offshore southern Brazil, is one of nine marginal rift basins in the equatorial South Atlantic. It formed by the collapse of a thermal dome in the late Jurassic and by subsequent rifting and opening of the South Atlantic in the early Cretaceous. Rifting was accompanied by immense volcanic outpouring seen at the surface today throughout the onshore Paraná Basin and thought to underlie the entire Santos Basin, and the adjacent São Paulo Plateau. Vulcanism was followed by subsidence of up to 10 km from Aptian to Recent time, and a coastal hingeline coincides with the Serra do Mar uplift. The basin depocentre, which is 700 km long, is bounded to the north and south by basement and volcanic highs, respectively. A restricted water circulation in the ocean basin, which prevailed up to the Santonian stage, has important repercussions for the hydrocarbon potential of the area. The nine genetically related basins have collective reserves of ≈ 5 billion barrels of oil and associated gas. A stratigraphic framework, based largely on seismic data, has been erected for the Santos Basin. Seven regional unconformities, or ‘R’ reflections, can be traced throughout the basin and form the boundaries for seismic sequences. Isopaching the seismic sequences defines the principal depositional units in the basin and also shows how the basin depocentre shifted with time. Limited well control has enabled the seismic sequences to be correlated with litho-environmental sequences which more fully reflect the geological evolution and provide a working exploration model. Finally, an attempt has been made to recognize and map seismic facies within the seismic sequences and to predict the lithofacies in areas away from well control 相似文献
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埕岛油田海区海底地形变化及预防措施 总被引：2，自引：2，他引：2
综合在胜利石油管理局埕岛油田海区多年来工程测绘与地质勘察资料 ,对埕岛油田海区地形地貌特征及其变化与发育趋势进行了论述 ,同时讨论了埕岛油田海上工程中需要重视的问题以及有关的工程防护问题。 相似文献
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我国近海含油气盆地的勘探现状是油气普查阶段基本完成 ,但勘探程度差别较大。同一含油气盆地内 ,有利区带 (凹陷 )勘探程度较高 ,发现了相当数量的油气田和含油气构造 ,而油气条件较差的坳 (凹 )陷 ,勘探程度较低。当前油气资源补充评价的主要任务是在前人评价的基础上 ,如何通过勘探程度较高地区丰富的资料 ,用多种方法求取、验证评价关键参数 ,指导勘探程度低的地区油气资源评价 ,这就是本文的目的和要探讨的评价方法。 相似文献
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东海新生代构造格架特征与油气关系 总被引：4，自引：0，他引：4
东海海域存在着二个不同时期、不同类型、不同结构秒同成因机制的新生代盆地，即发育在陆壳之上的东海陆架陆缘裂谷盆地和发育在过渡地壳之上的冲绳海槽弧后盆地。前者是大陆向洋蠕散时两次裂离而形成的，后者是洋壳向陆壳俯冲导致陆壳裂离而产生的。 相似文献
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泰国湾区域经历了前裂谷期、裂谷期、裂后期的构造演化阶段,形成了多个裂谷盆地。泰国湾区域东北部在渐新世经历了一次明显构造反转,较泰国湾区域大部分地区强烈。通过对比区内钻井,结合地震解释,对该区的沉积特征和构造演化进行了分析,认为这次反转构造导致了反转构造带上构造、沉积特征与邻区有较大的不同。由于这次反转构造,泰国湾东北部在新层系发育新类型的油气系统,即深部的始新统油气系统:烃源岩为中始新统湖相泥岩,储层为上始新统-渐新统三角洲相砂岩,盖层为下中新统三角洲前缘相泥岩和上中新统以上的海相泥岩。该油气成藏系统已被钻井钻遇油气显示,是本区有效油气成藏系统。 相似文献