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.

为降低伴生气压缩机曲轴箱和注油器润滑油消耗,通过方案比选,选择利用曲轴飞溅式润滑原理制作曲轴箱供油装置,实现将曲轴箱内的润滑油供应到注油器内,将曲轴箱润滑油由封闭状态转变为动态更新状态.通过制作曲轴箱供油装置提高了润滑油使用效率,降低了油品消耗.

高含蜡原油外输管道在生产运行过程中,需定期进行清管作业,在作业过程中,常会遇到卡阻的情况.结合某油田某高含蜡原油外输管道清管工程实例,首先,简要介绍了工程概况.其次,较为详细介绍了初次通球方案实施的通球过程、卡堵原因分析及通球经验.其三,重点介绍了改进后通球方案的技术思路、通球前准备工作、第二次通球过程和通球经验.最后,总结指出:对处于生产运行中的高含蜡原油外输管道,需确定合理的清管周期;对具备分段通球条件的最好选择通球,并优先考虑从后级开始通球.

During the exploitation process of unconventional adsorbed gas reservoirs,as formation pressure decreases,adsorbed gas will be desorbed and make adsorbed layer decrease and free gas space increase.At present,the material balance equation considering adsorbed layer volume variation has not been established and has not been applied to research the influence of adsorbed layer volume variation and density on adsorbed gas reservoir reserves.This paper firstly established new material balance equation considering the adsorbed layer volume variation.The application cases proved the applicability and reliability of this equation,and it is cognized that adsorbed layer volume variation and density have greater influence on natural gas reserves estimation.

According to the reservoir features of the lower member of V Stratum in Shuanghe Oilfield,a heterogeneous model was established,and remaining oil distribution pattern of different models was obtained.The effects of different geological and development conditions on remaining oil distribution were analyzed.Through regression analysis,the correlation of recovery percent,remaining oil heterogeneity degree and other factors(such as fluid extracting rate,well spacing,plane permeability ratio,formation dip angle and reservoir thickness) could be acquired when the composite water cut reached 95% in production well in the flooding pattern.A regression equation and numerical simulation were used respectively to calculate the recovery percent and remaining oil heterogeneity degree of five-spot pattern in Shuanghe Oilfield.The errors of these two methods are less than 10%.The integrated application of regression equation is significance for describing the remaining oil and its distribution pattern quantitatively,it provides a guidance for future adjustment in flooding pattern of oilfields.

According to four diluting parameters affecting heavy oil production assisted with light oil-diluting amount,diluting relative density,diluting temperature and diluting depth,analysis on the impacts of diluting parameters of wellhead pressure using multi-element non-linear regression regression method is presented.The results show that the wellhead pressure increases as the increasement of diluting amount,diluting temperature and diluting depth and decreases as the increasement of the relative diluting density.Diluting amount makes the greatest impact on wellhead pressure,diluting temperature,diluting depth and relative diluting density's impact is smaller.

We usually soak thin oil to visbreaking in heavy oil lifting with hydraulic jet pump. By optimizer, on the basis of the combination of the jetter and the throat, this article mainly analyzed the influence of flowing bottom-hole pressure, water cut and well yield to the blending ratio in heavy oil lifting with hydraulic jet pump. The results show that when flowing bottom hole pressure decreases or water cut becomes to raise, the blending ratio will be rising, when the well yield raises, the blending ratio will be increased in the first and decreased later, but the pressure of injection is always increasing at the surface.