自来屯油田储层含油性测井综合评价

河北沧县自来屯油田储层主要为细砂岩、粉细砂岩,粒度细,泥质含量高,以阿尔奇公式为基础的电阻率测井解释结果与储层实际含油性差别较大.作者以岩心资料、试油试采资料为基础,运用回归分析方法,建立了储层含油性与测井参数之间的统计关系,作为测井解释综合评价储层含油性的解释模型,取得了符合该区储层含油性情况的实际结果.     

Research on key technologies in design of middle pylon of Taizhou Bridge

At the middle pylon of a three-pylon two-span suspension bridge, the effect of unbalanced loads on the adjacent spans may result in a series of technical bottlenecks in design, such as stability and anti-slippage between saddles and main cables. This article presents the researches conducted on structure selection and behavior characteristics of middle pylon, interaction mechanism between main cables and saddles and their anti-slippage safety performance, elastic and plastic stability analysis and safety assessment of steel middle pylon, and fatigue design load and method for steel pylon of Taizhou Bridge. According to the research results, a longitudinal inverted Y shape steel middle pylon is used in design, effectively solving many technical difficulties, and this type of pylon has become a suitable middle pylon structural form for many three-pylon two-span suspension bridges.     

Space shape finding FE analysis for suspension bridge based on CR formulation method

The problem of geometric non-linearity simulation for spacial cable system was solved by introducing the truss element based on corotational coordinate (CR) system, cable structure materials and node coordinates and automatic refreshing algorithms for element internal force. And the shape-finding problem for maneuvering profile was solved with the Newton-Raphson based on energy convergence criteria with search function. This has avoided the regular truss element assumption extensively used in traditional methods and catenary elements which have difficulties in practical application because of the complicated formulas. The use of CR formulation has taken into account the stiffness outside the cable plane via a geometric stiffness matrix, realizing the 3D space analysis of a cable bridge and improving the efficiency and precision for the space geometric non-linearity analysis and cable structure, and enabling more precised simulation of geometric form finding and internal force of the large span suspension bridge main cable under construction.     

陕西铜川地区油页岩含油率测井评价方法

油页岩是一种重要的非常规油气资源,油页岩的含油率是油页岩工业品质评价中最重要的参数之一。目前,油页岩含油率主要是通过对岩芯的实验室测定来获取,受取芯和测试成本影响,可利用的含油率数据十分有限,且由离散样品获得的含油率数据难以准确反映强非均质性的有机质在地层中的准确分布。油页岩具有典型的测井曲线特征,利用测井资料估算油页岩含油率,可以在较低的经济成本基础上获得更多且连续性好的数据。通过铜川地区油页岩探井的测井与有机碳、含油率资料,结合ΔlogR方法,初步建立了油页岩有机碳(TOC)质量分数和含油率(ω)解释模型,对油页岩层段进行了识别和有机碳和含油率解释计算,通过对比验证取得了较好的效果,为利用研究区大量石油测井资料进行油页岩工业评价提供了方法和依据。     

多元回归判别在低阻油层识别中的应用

形成低阻油层的因素较多,常规的交汇图无法做出准确判断。多元回归判别由于考虑因素多,所以更适合于油、水层的识别。以大庆油田XX组共32个样本点进行了判别,并得到了判别方程。     

预应力斜拉索屋盖施工

预应力斜拉索屋盖是一种新颖的结构形式，某高校学生活动中心预应力斜拉索屋盖工程施工中通过采取一系列的措施，减少了拉索预应力损失及张拉拉索对屋盖造成的不利影响。     

应用地震资料计算锦州9-3油田储层储量的方法

以往油藏地质人员计算储层的储量，对于储层的物性参数不仅利用井中资料，井间资料只有通过井内插得到，没有很好地把地震资料利用起来，在制图及计算中花费大量时间．鉴于此种情况，通过人机联作绘制了一系列复合参数交会图，经多元统计分析后建立地震参数与储层参数间的数学关系．从而利用地震资料将井孔附近的储层参数扩展到整个油田，并提出计算储层储量的方法．     

±800kV换流站电缆屏蔽方式研究

对±800kV换流站电磁干扰的来源和传播途径进行了分析，给出了换流站中主要电磁干扰源的干扰强度，提出了电缆屏蔽的原则以及在实际工程中的应用。     

一种描述测井信息的数据组织模型

针对测井信息的内部结构机理，提出了一种能对测井信息进行了全面描述和存储的新型模型－测井信息描述数据组织模型，在该模型中，多个全件根据语义与头件进行关联，使测井曲线具有广义和多级性，并对该模型进行了详细描述。     

高速铁路电力供电系统的研究

高速铁路电力供电系统采用多种新技术、新设备提高供电可靠性．本文着重分析单芯全电缆设计过程中的技术难题和解决方法：使用智能箱变、电力远动系统对提高供电可靠性的作用．