准噶尔盆地石炭系火山岩气藏形成条件分析

通过对准噶尔盆地石炭系油气成藏条件的分析,认为火山岩相、基底断裂和生烃中心是石炭系油气成藏的主要控制因素。自生自储是石炭系油气来源的重要特征,火山岩是石炭系主要储层,分布广,厚度大;孔隙和裂缝是主要储集空间类型,且物性不受埋深影响;不同的火山岩性-岩相有不同的储集性能,溢流相的流纹岩、安山岩和爆发相的火山角砾岩是好的火山岩相;火山岩风化壳孔缝发育,是最优质的储集体。断裂是油气运移的主要通道,纵向运移是油气聚集的主要方式,基底断裂控制着油气藏的分布。二叠系和中生界泥质岩类构成了石炭系主要盖层,油气保存条件好。     

柴达木盆地西部北区N2^1～N2^2低渗非常规储层应力敏感特征分析

通过室内实验对柴达木盆地西部北区储层岩石的应力敏感性进行了研究。结果表明,岩石类型对该区储层应力敏感性具有重要的影响,风暴岩应力敏感性一般为中偏弱,而灰泥岩储层具强的应力敏感性。风暴岩的渗透率恢复率明显高于灰泥岩的渗透率恢复率。     

从前侏罗纪古地貌的角度论鄂尔多斯盆地靖边—鄂托克前旗地区油气成藏模式

以陕北斜坡靖边—鄂托克前旗地区下侏罗统延安组延9油藏为例,运用印模法恢复了前侏罗纪古地貌形态。研究表明:研究区古地貌主要为高地、斜坡、河谷和河间丘4种古地貌单元。在此基础上分析了富县组+延10段沉积相带展布以及前侏罗纪古地貌对延9油藏的控制作用,认为古地貌景观基本控制了富县组及延安组下部的沉积相带展布。古河谷的下切作用不仅使延9段与延长组油源层的接触距离缩短,而且为油气运移提供了良好的通道,如遇到有利的储集体与背斜和鼻隆等构造,即可有机配置和富集成藏。存在两种成藏模式,即河间丘区-分流河道组合式和斜坡区-分流河道组合式。指出前侏罗纪古地貌斜坡区与河间丘区是下一步延9段油藏勘探的有利地区。     

塌崖沟油区延长组长4+5、长6油层组高分辨率层序地层学研究

本文综合运用了地质、测井等资料,以现代沉积及岩相古地理学、高分辨率层序地层学、测井地质学及石油地质学为理论指导,通过测井-地质响应模型,对研究区进行了层序地层分析。在长4＋5,长6油层组中识别出三种短期沉积旋回,为后期油田开发和研究提供了一定依据。     

滨里海盆地阿斯特拉罕-阿克纠宾斯克隆起带盐下层系勘探潜力分析——以比克扎尔隆起区泥盆系为例

滨里海盆地阿斯特拉罕-阿克纠宾斯克大型隆起带是一个极其富有的油气聚集带,已发现的大型和特大型油气田,如阿斯特拉罕、田吉兹、扎纳若尔、肯基亚克等油田均处于该隆起带上。比克扎尔隆起与卡腊通-田吉兹隆起一样,作为大型隆起背景下的次一级隆起,具有相似的构造演化、沉积和地层特征。已发现油田的主要产层为盐下的石炭系,分布于盆地的边缘带;随着地质-地震研究程度的不断加深、新的勘探技术不断应用,滨里海盆地的油气勘探将会由边缘带向盆地中心转移。根据区域研究资料,结合地质、地震、钻井资料,笔者对滨里海盆地盐下层系中的泥盆系的构造演化、沉积环境、成藏条件及地层特征进行分析。研究认为滨里海盆地比克扎尔隆起区盐下层系中泥盆系有巨大的勘探潜力。     

苏丹Melut盆地Moleeta油田构造特征研究

Moleeta油田是中国公司在苏丹发现的亿吨级高凝油油田,由12个小油田组成。研究区整体上为西断东超的单断型箕状凹陷,构造十分复杂,断裂十分发育,有大小130多条断层,平面上分为南部洼槽区、中南部断鼻区、中部断槽区、东北部断鼻区,以及西北部复杂断块区。     

形成针对太湖流域三类水源的综合解决方案实现典型和新型污染物的协同控制

太湖流域是我国典型的水质缺水型地区,饮用水安全保障工作面临较大挑战."十三五"水专项"太湖流域饮用水安全保障工程技术与综合管理技术集成研究"课题梳理了太湖流域饮用水专项实施以来的课题及关键技术,针对太湖流域水源水质特征和区域供水特征,通过水源水质评估、关键技术遴选、工艺协同优化和示范工程验证,形成了针对太湖流域三类典型...     

哈萨克斯坦01A井钻井技术研究

01A井是位于滨里海盆地的东缘构造带上部署的一口评价井,在钻井过程中钻遇的盐层软硬交错变化、浅层气等给施工造成了许多困难。根据实钻情况及时分析、总结,采取相应的技术措施,克服了钻井施工中出现的难题,完成了钻探任务。     

Allochthonous blocks misidentified as the basement: Implication for petroleum exploration in the SW Thrace Basin (Turkey)

The sedimentary sequence of the SW Thrace Basin (NW Turkey) comprises of three major sedimentary packages: a) Cretaceous (Meastrichtien)–Early Eocene package formed as pelagic carbonate, turbidite, shelf and nearshore-fluvial deposits, b) Middle Eocene–Early Oligocene package formed as shallow marine, slope apron and turbidite sediments, c) Middle Miocene–Early Pliocene package formed as alluvial fan-fluvial and nearshore deposits. This basin is structurally complex and its southern margin is represented by a fold-thrust zone. The Westward Propagation of the North Anatolian Fault (WPNAF) intersects the Thrace Basin along its southwestern flank. In the SW Thrace Basin, there are ophiolite and limestone blocks in the sedimentary succession, which previously were interpreted as suture of the Intra-Pontide Ocean, Cretaceous aged Yeniköy Mélange or Olistostromal Unit in the Eocene sediments. In this study these rocks have been defined as allochthonous blocks facies of the Gaziköy Formation aged Middle–Late Eocene.In previous studies the Karaağaç Formation (Early Eocene) was considered to be within oil window and have an average potential for oil and gas generation. According to our data the Karaağaç Formation has a moderate TOC content, is mature and overmature. In the study area, there are potential stratigraphic traps (submarine fans and channels of the Karaağaç and Keşan Formations, fluvial channels of the Fıçıtepe Formation and reefs of the Soğucak Formation), potential fractured tuffs (the Gaziköy Formation) and, potential structural traps related to the folds, thrusts and the WPNAF. Although 17 exploration wells have been drilled in the study area and vicinity, no discovery has yet been made. The cause of this may be that the wells were terminated at depths shallower than potential targets or possibly drilling may have been terminated at the allochthonous block facies of the Gaziköy Formation, which is especially derived from ophiolite mélange and was misidentified as basement.     

准噶尔盆地地热场特征与油气

本文根据准噶尔盆地760个测温点资料,结合盆地构造演化过程对盆地地热场特征及其与油气的关系进行了探讨。认为准噶尔盆地是一个较冷的盆地,地热场偏低,而且烃源岩偏老,以致生油气门限深度偏大,给勘探工作造成一定困难。