The paper sketches the course of research and development of" CG percussive grabbing boring equipment with casing", composition and specification of equipment;

Through shooting fast neutron and measuring spectral gamma-ray produced by neutron activation reaction, oil-bearing saturability of strata outside boring casing can be determined.

通过向地层发射快中子并测量中子反应产生的伽玛射线能谱能够确定套管外面地层的含油饱和度。

Discussing the OilWell Construction Question from Surficial Boring Casing Tripping in Accurate Location in Yanchang 86 Well

从延86井表层套管下入位置谈油井施工问题

Ultrasonic casing inspection tool cryogenic line leak detector

超声套管检查测井仪制冷剂排管泄漏检测器

The results show that: the strength and fatigue lifetime of the outer casing including welding line can satisfy the design requirement.

分析结果表明：外机匣（包含焊缝）强度和寿命满足设计强度和寿命的要求；

Tianjin Pipe Corporation Tube Processing Factory transformed the original plain-end tube production line into plain-end/ casing tube line in order to produce the oil casing tube with high additional value.

天津钢管公司管加工厂为了生产高附加值无缝石油套管，将原来一条光管生产线改造为光/套管线。

Through the comprehensive technical level analysis of China plate rolling, pipe making and pipe processing, it points out the possibility and necessity of establishment of ERW casing production line in China.

通过对我国近年来卷板轧制、管材制造及管加工等技术水平综合分析，认为，在我国建造ERW石油套管生产线是必要的、可行的。

The Design Alternative of Automation Reform for Oil Casing Production Line Based on PLC

基于PLC的石油套管生产线自动化改造方案设计

Application of PLC Technology in Petroleum Casing Product Line

PLC技术在石油套管生产线上的应用

DESIGN AND EXPERIMENT OF HIGH SPECIFIC SPEED VOLUTE MIXED FLOW PUMP Measurement of Hydraulic Losses in Volute Casing of a Reversible Pump-Turbine under Pumping Mode

高比转数蜗壳式混流泵的设计与研究混流可逆式水泵-水轮机泵工况蜗壳损失试验研究

Based on four kinds of elements, the contact node pairs are established and the finite element analysis of the clearance and contact among the volute casing, vaned intake ring and cement foundation is carried out with the step loading method.

本文在采用板壳元、块体元、边界元、伪单元和建立接触点对的基础上，利用分步加载法对蜗壳、座环与水泥基础间的间隙和接触问题进行了有限元分析计算。

The experiments of an oil film visualization technique are accomplished on the surfaces of impeller, inlet segment and partial meet face between inlet segment and volute casing.

对螺旋离心泵叶轮、进水节和进水节与蜗壳交界处的部分端面做了表面油膜、油点试验。

Flow field of centrifugal pump ( Pump flow passage includes suction pipe, impeller and volute casing.) was obtained by solving the Reynolds average Navier-Stokes equation.

通过求解包括进水管、叶轮、泵体等过流部件在内的水泵流道内的三维稳定雷诺平均Navier-Stokes方程，获得水泵内部的流场分布特征。

A Higher Order Sound Modal Analysis of the Volute Casing of a Centrifugal Fan with a Sound-Soft Boundary

声软边界离心风机蜗壳高阶声学模态分析

Contact among Volute Casing, Vaned Intake Ring of Large Hydraulic Turbines and the Cement Foundation

大型水轮机蜗壳座环与水泥基础间的接触问题

Optimum Design for Volute Casing and Base Ring of Large Hydraulic Turbines

大型水轮机蜗壳、座环结构优化设计

A Discussion on new ISO criteria for oil well casing strength calculation

油井管强度计算方法新ISO标准讨论

Development of checking software for deep well casing string in complex conditions

复杂工况下深井套管柱校核软件的开发

Mechanics model for interaction between creep formation and oil well casing

蠕变地层与油井套管相互作用力学模型油套-套管环形空间

The 3D simulation and recognition method of oil/ water well casing defects

油（水）井套管缺陷的三维模拟及其识别方法

Application of ANSYS in forecasting of water injection well casing damage

ANSYS软件在注水井套损预测中的应用