本期导读

本期着重于向读者展现我校的机械工程学科及石油天然气装备的设计理论及方法的系统研究。 我校机械工程学科长期以来坚持以石油天然气装备为特色，依托“石油天然气装备”教育部重点实验室及3个省部共建重点实验室，在石油钻采工具（岩石破碎与钻头）及石油天然气装备、海洋石油特殊装备、机械现代化设计理论和制造技术、机械系统仿真、油气井管柱力学等方面形成了稳定的研究方向和实力。本期刊登的科学研究专题报道《西南石油大学机械工程科学研究简介》主要从该学科的“学术思想、研究特色、主要研究方向、主要研究内容及成果”等方面，向读者作了较详细的介绍。《双头单螺杆泵衬套有限元分析》由陈次昌教授等人完成，论文讨论了双头单螺杆泵衬套在受到均匀压力与非均匀压力以及静态接触情况下，衬套内各点的变形、应力与应变的分布情况，揭示了双头单螺杆泵衬套的受力状态和变形规律，为双头单螺杆泵的结构优化设计及性能改善提供了参考依据。梁政教授等撰写的《水力旋流器颗粒沉降速度与分离粒度研究》，在对水力螺旋器内部流场数值模拟的基础上，对其内部固体颗粒的运动规律和受力分析进行了深入的研究，首次推导出径向沉降速度为零的轨迹面半径与固体颗粒直径、水力螺旋器自身几何参数以及操作参数之间的定量表达式。《塔里木盆地西北部地壳三维构造研究》一文，由中国地震局地球物理勘探中心的赖晓玲副研究员等人完成。论文主要研究Q值结构和震源分布图像及其与研究区地壳深部断裂的关系，为区域地质构造研究和油气资源的探测提供了深部构造信息。由胡泽、陈平等作者撰写的《应变测试法测试钻井参数的数据采集系统设计》，设计了一种基于应变测试法的钻井工程参数随钻井数据采集系统，采用ADμC8系列单片机为主控制器，作为具备近钻头测试功能的新型工具，能够完成钻压、环空压力等数据的采集、存储和运输。孔祥平等作者撰写的《油藏非生物因素耗氧实验研究》，针对好氧微生物驱油技术注入多少氧气的问题，探讨了胜利油田某区块原油、注入水和产出水的耗氧情况，开展了油藏非生物因素对氧的消耗实验研究。该研究将为空气辅助微生物驱油技术提供理论依据。冯茹森、郭拥军、薛新生等作者认为疏水缔合物作用是HAWP水溶液中形成可逆的超分子结构和溶液保持其结构流体特性的根本原因，提出了设计分子间高缔合比例疏水缔合聚合物的分子设计目标。文章有新意，本刊将分三期连载他们的作品《分子间高缔合比例疏水聚合物研究》。 为鼓励作者们向习惯性认识挑战，共同构建和谐社会，我们将具“探讨与争鸣”性的论文给予优先待遇，欢迎各位勇跃投稿。

Guidance for readers

This issue focuses on showing Petroleum Machinery Engineering in SWPU, oil and gas equipment theory system research to readers.With the characteristics of oil and gas equipment for a long time，the Petroleum Machinery Engineering has three provincial and ministerial key laboratories. It has a stable and strong research strength on the aspect of developing oil drilling tools, oil and gas equipment theory, ocean petroleum special equipment, machinery modern design theory and manufacturing technology, mechanical system simulation, oil, gas pipe mechanics and so on. The special report “A Brief Introduction to Petroleum Machinery Engineering, Southwest Petroleum University” introduces the details of the subjects to readers.“Finite Element Analysis for a Double-Helix Single Screw Pump Bush” is written by CHEN Ci-chan et al.The deformation, stress and strain's distribution of the double-helix single screw pump bush are discussed in this paper when the bush is under equal pressure, disordered pressure and the static contact with the bush and screw. The stress state and deformation regularity of the double-helix single screw pump bush are revealed, and the influence of condensability of the bush material on the deformation discussed, which offer the reference to the optimal design of the structure and the performance improvement of double-helix single screw pump.“Study on The Particle Slip Velocity and Separating Diameter” is composed by professor LIANG Zheng et al. In this paper, the dynamic forces acting on the particles and the radial movement of particles in hydrcyclone are studied on the basis of experiment and CFD simulation. The formula of the trajectory of the particle in which the radial slip velocity of particle is zero is offered.“Three Dimension Crustal Structure at the Northwest Corner of Tarim Basin” is composed by LAI Xiao-ling et al. LAI Xiao-ling is associate researcher in Geophysical Exploration Center, China Earthquake Administration. This paper using Q-value tomography and hypocenter distribution image, find respectively corresponding with fault in the study region. It provides deep tectonic information for the geologic structure research and the petroleum resources exploration.“Design of Data Acquisition System of Measuring Drilling Engineering Parameter Based on Stain Measuring Technology” is composed by Hu Ze,CHEN Ping et al. The authors of the paper design a data acquisition system of drilling engineering parameter while drilling based on strain measuring technology. The data acquisition system adopts ADμC8 series single chip as main controller, by means of four strain gauge full bridge mode, drilling engineering parameters, such as drilling pressure, torque, side pressure and annular pressure etc. can be measured while drilling. “Experiment on Abiotic Factor Oxygen Consumption of The Reservoir” is written by KONG Xiang-ping et al. To aerobic microbial enhanced oil recovery, determining the amount of oxygen injection is a problem urgently to be solved. Oxygen consumption of crude oil, injected water and produced water of one block in Shengli Oilfield is probed by analyzing changes of gas composition before and after the reaction in high-pressure oxidation tubes. The results will provide theoretical basis for microbial enhanced oil recovery by adopting air-assistant technique.FENG Ru-sen, GUO Yong-jun, XUE Xin-sheng, et al.discussed hydrophobically associating water soluble polymers (HAWP), concluded that all these problems in different aspects are the result of incorrect molecular design and inexact control during polymerization process. The relationship between hydrophobical interaction and properties of HAWP, as well as effects of temperature and salt on HAWP solution, are studied, a new idea about HAWP molecular design is put forward. Our Journal will publish their research “HYDROPHOBICALLY ASSOCIATING WATER-SOLUBLE POLYMER with HIGH-RATIO INTERMOLECULAR ASSOCIATION” in three series.In order to encourage authors challenge the customary understanding and construct harmonious society，we will give priority to articles about “Probe and Contends”. Looking forward to your reply and contribution.