目前对塔中志留系物源的认识仍存在不确定性.利用LA-ICP-MS分析技术对塔里木盆地塔中地区志留系柯坪塔格组2件样品开展碎屑锆石U-Pb年代学研究.结果表明塔中志留系碎屑锆石主要为岩浆结晶成因,锆石年龄主要分布在早古生代460～490 Ma、新元古代760～1000 Ma、古元古代1600～2200 Ma及新太古代晚期-古元古代早期2400～2600 Ma四个时期,其中新元古代760～1000 Ma碎屑锆石年龄占绝对优势(56.8％),峰值～850 Ma.结合志留纪时期塔里木板块南北缘的板块动力学背景,通过盆内构造演化及地貌特征的分析以及和潜在源区锆石年龄的详细对比,确定塔中志留系碎屑锆石主要来源于塔里木盆地西南缘的铁克里克隆起构造带.

岩相及其组合有规律地分布于层序地层格架内.通过岩心观察和样品测试数据综合分析,基于T(湖进)-R(湖退)层序划分方法,系统分析了渤海湾盆地济阳坳陷古近系沙三下亚段陆相断陷湖盆关键层序界面特征、变化形式、构成样式及分布模式,总结出沙三下亚段的沉积层序演化模式.研究结果表明:①沙三下亚段关键层序界面类型主要有区域性的最大湖泛面和层序界面;②层序变化形式主要有向上变浅的R半旋回、向上变深的T半旋回和稳定旋回3种,层序单元构成可归为3种类型,分别为快升慢降型、慢升快降型和均一型;③沙三下亚段为一完整的三级层序,可划分为4个四级层序,对应早期湖进体系域(早期LTST)、晚期湖进体系域(晚期LTST)、早期湖退体系域(早期LRST)和晚期湖退体系域(晚期LRST),四级层序和划分的五级层序单元具有全区的可对比性和完整性;④济阳坳陷沙三下亚段湖平面在总体快升慢降的背景下,主要经历4个变化阶段——早期LTST的快速上升阶段、晚期LTST的缓慢上升阶段、早期LRST的缓慢下降阶段及晚期LRST的下降阶段.层序演化过程中,构造沉降、沉积物供给和气候条件等因素在不同阶段所起的作用不同,从而造成层序格架内岩相及其组合分布的差异.

当前石油企业的生产方式仍然是机械化操作,因此设备管理工作是石油企业日常管理工作中的重点,倘若设备维护与检修不及时,则会出现工作延误,严重时还会带来生产事故,可见设备管理工作的重要性.文章将先从当前石油企业设备管理工作中暴露出的问题进行阐述,并提出针对性的加强设备管理工作的措施.

Well testing is an important technology in oil field development, and it is also the foundation of the adjustment of injection and development program, of the evaluation and selection of the measure and of the fine reservoir description, which is considered as the "stethoscope" of the oil field. This paper is based on the heterogeneous reservoir of Jurassic and fractured wells of the Triassic, through the characteristics of the testing curves, combining with the characteristics of the reservoir to analyze the causes of it and recognize the law of low permeability reservoir; and applied to the oil field development, in addition to routine evaluation of energy distribution and the guidance of injection and adjustment, which can value the development and technology policy of oil field, besides it can also recognize the front and the effect of water injection; it can guide multi-storey explore and tap the potential and evaluation of various measures, which gradually form the application model of well testing in low permeability reservoir and guide the development of oil field effectively.