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鄂尔多斯盆地马岭地区上三叠统长7油层组油气富集规律 总被引:2,自引:0,他引:2
鄂尔多斯盆地马岭地区长7油层组具有良好的油气资源潜力,但随着油气勘探开发的深入,其勘探难度越来越大。致密砂岩型岩性油气藏的成藏富集机理是制约鄂尔多斯盆地延长组长7油层组深入勘探的核心问题。为了更好地指导油气勘探工作,从烃源岩、沉积相、储集层及构造特征等方面入手,总结了该区长7油层组油气藏分布特征和规律,并分析了油气富集成藏的主控因素。结果表明:马岭地区长7油层组主要为岩性油气藏,深湖浊积岩为主要沉积类型,油气富集主要受烃源岩、沉积相及储层等因素的控制。 相似文献
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辽河油区大洼油田东营组构造储层发育复杂,在油田开发的中后期,为找到更优质的后备储量,针对东营组一段构造特征、沉积旋回、砂体、油气层分布等地质特征进行了更深入的研究.对比研究表明,东营组一段仍具有良好的开发潜力.研究结果为后续的油气开发提供了地质依据. 相似文献
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松辽盆地北部英台-大安地区葡萄花油层油气分布规律 总被引:1,自引:1,他引:0
松辽盆地中浅层多属于河流—三角洲、湖泊沉积体系,英台—大安地区葡萄花油层属于三角洲前缘沉积,其沉积砂体的特征及构造控制了油气分布的规律。通过对葡萄花油层的地层、构造、沉积微相、储层等特征研究,结合地震属性和有利圈闭分析,考虑生储盖组合等成藏地质要素,预测了葡萄花油层有利含油气区,总结出影响、控制油气富集的关键因素和油气分布规律。 相似文献
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史家湾-堡子湾地区发育岩性-构造油藏,相控砂体特征明显,该区延安组延9油层组是油气勘探开发的主要层系,但前人尚未对延9油层组沉积微相进行深入研究,严重制约了后期开发策略的制定.文中综合运用大量岩心、测井数据,对研究区岩心的颜色、岩性、沉积构造及古生物化石等沉积相标志进行研究,认为研究区延9油层组属于三角洲沉积环境下的三角洲平原亚相沉积,发育的微相类型主要有分流河道、天然堤、分流间洼地和沼泽.优势油气储集相带为分流河道,砂体平面上呈北西—南东向条带状展布,平均厚度5.8m,宽0.5~3.0 km,局部多期河道叠加,厚度大于15m.砂泥岩平面上相间、垂向上互层的结构有利于形成良好的岩性圈闭. 相似文献
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从辽河滩海地区上第三系馆陶组地层、构造和沉积特征分析入手,通过对圈闭条件,储、盖层特征,烃源岩条件,油藏特征及油气运聚规律的系统分析,提出了滩海地区上第三系油气勘探的方向,并对有利目标进行了选择评价.综合分析认为,控制上第三系油气成藏的主导因素为:充足的油气源条件;形态完整,圈闭成群发育的构造带;长期持续活动的深大断裂将生油洼陷与储油圈闭相连通;厚层广泛分布的区域性封盖层.以辽海中央低凸起和燕南潜山为背景、以海南断层和燕南断层为油源通道的月东构造和燕南构造带,是本区上第三系最有利的区带,应作为进一步勘探的首选目标. 相似文献
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锦612断块大凌河油层构造复杂,储层非均质性严重,储层砂体展布规律、沉积微相及沉积特征不清.为了更好地确定剩余油分布规律,对其湖底扇中扇亚相岩石相、岩石学及粒度等沉积特征进行了研究.并将中扇亚相进一步划分为辫状水道、水道间和中扇前缘3个微相,并分析了各沉积微相特征及平面展布规律;评价了湖底扇中扇亚相砂体各沉积微相的储集性能,指出了富集油气的沉积微相类型. 相似文献
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鄂尔多斯盆地延长组长3油层组油藏与其他油层组油藏基本相似,但发现的储量最少。应用下寺湾油田岩心、测井、录井、试油、试采等资料,探讨长3油层组储层发育特征及油气成藏的控制因素。结果表明:下寺湾油田长3油层组构造较平缓,发育近东西向的鼻状构造;属于三角洲平原亚相沉积,其微相类型有分支河道、陆上天然堤、决口扇和沼泽微相,分支河道微相是砂体最发育的相带;储层岩性以细粒长石砂岩为主,主要孔隙类型为粒间孔隙,平均孔隙度为12.4%,平均渗透率为1.28 mD,属于低孔、低渗储层;油藏主要受岩性控制,其次受构造因素影响,属于构造-岩性油藏。该研究成果对长3油层组油气勘探具有指导作用。 相似文献
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构造演化对葡南黑帝庙油层油气分布的控制 总被引:1,自引:1,他引:0
黑帝庙油层属松辽盆地上部含油组合,该层从1967年勘探至今已经有多口井发现工业油气流,展示了其良好的勘探开发前景.以葡南地区构造特征研究为契人点,通过研究葡南地区构造演化规律以及古构造对油气运聚的影响,探讨了黑帝庙油气的分布规律.研究表明,葡南地区黑帝庙油层的构造格局在明水组地层沉积前后发生了巨大的变化,由明水组地层沉积前"三降两凹"的构造格局转变为现今"一隆"的构造格局.这说明明水组反转变形前的构造格局也决定了嫩末时期所形成的黑帝庙油气藏的分布,古构造高点可能也足当时油气运聚的中心地带,这为黑帝庙油层寻找油气指明了方向. 相似文献
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采油过程中,酸化是油气井增产、注水井增注的主要措施。砂岩基质酸化和碳酸岩基质酸化都是在低于储层破裂压力的条件下向地层中注入酸液,溶解地层中的可溶物质,清除孔隙或裂缝中的堵塞物质,从而使油气井增产或注水井增注的一种工艺措施。本文着重讨论了砂岩酸化的设计计算方法,并由此建立一套基质酸化设计方法。 相似文献
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《Oil and Energy Trends》2008,33(5):6-7
This section summarizes downstream developments of the previous month. Exploration & Production are covered in 'Upstream Review'.
An upsurge of violence in Iraq threatened a recovery in output that began earlier this year. Production in the northern fields hit a post-invasion high of 620,000 bpd in March, rising by 180,000 bpd in one month. Fighting in the south, however, cut production there by more than 100,000 bpd as government troops tried to subdue Shi'ite militias in and around Basrah. Oil installations damaged in the south included a pipeline and a pumping station. The Iraqi government nevertheless announced that oil production would reach 2.9 mn bpd by the year's end, requiring an increase of nearly 500,000 bpd over April 2008 levels. Foreign help is to be sought via a series of technical service agreements and - later this year - an upstream licensing round. Japan's Ministry of Economy, Trade and Industry says it wants a bigger role for Japanese oil companies in both the upstream and downstream sectors in Iraq. Kurdistan says it is negotiating with Baghdad to export oil produced from new oil fields there. The central government does not recognize production agreements drawn up by the Kurdistan Regional Government. The EU - desperate for gas to fill its Nabucco pipeline - has approached Iraq for up to 1 bn cfd. 相似文献
An upsurge of violence in Iraq threatened a recovery in output that began earlier this year. Production in the northern fields hit a post-invasion high of 620,000 bpd in March, rising by 180,000 bpd in one month. Fighting in the south, however, cut production there by more than 100,000 bpd as government troops tried to subdue Shi'ite militias in and around Basrah. Oil installations damaged in the south included a pipeline and a pumping station. The Iraqi government nevertheless announced that oil production would reach 2.9 mn bpd by the year's end, requiring an increase of nearly 500,000 bpd over April 2008 levels. Foreign help is to be sought via a series of technical service agreements and - later this year - an upstream licensing round. Japan's Ministry of Economy, Trade and Industry says it wants a bigger role for Japanese oil companies in both the upstream and downstream sectors in Iraq. Kurdistan says it is negotiating with Baghdad to export oil produced from new oil fields there. The central government does not recognize production agreements drawn up by the Kurdistan Regional Government. The EU - desperate for gas to fill its Nabucco pipeline - has approached Iraq for up to 1 bn cfd. 相似文献
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三江盆地绥滨坳陷白垩纪地层剥蚀厚度恢复 总被引:3,自引:1,他引:2
三江盆地绥滨坳陷地质历史时期曾经历了多期剥蚀作用,其中白垩纪至古近纪期间的剥蚀作用面积大、作用强,造成坳陷内地层大面积抬升剥蚀,地温降低,影响到油气的生成和排出.采用孔隙度法、镜质体反射率法和成熟度反演法分析绥滨坳陷南部和北部的剥蚀量,3种方法相互验证结果显示坳陷北部滨1井要比坳陷南部滨参1井经历了更大的剥蚀过程,相比之下,南部地区更有利于油气的形成和聚集. 相似文献