To classify the quality of the resistance spot welding process, the relationship between the welder electrode displacement curve characteristics and the weld shear force has been explored where 11 sta
As a widely used general polymer material, PVC shows the great potential value for insulating or damping the sound and vibration due to their unique combination of structure, inherent damping, light-w
In-situ nanostructured FeAl2O4 composite coatings were prepared by plasma spraying Al/Fe2O3 composite powders using different spraying powers.The effects of plasma spraying powers on microstructure an
QCr0.8 was electron-beam welded to TC4 and the effect of the intermetallic layer (IMC-layer) on the mechanical properties of the joint was investigated.IMC-layers are joint weaknesses at the Cu fusion
A semisolid microstructure of Mg-8%Al-l%Si alloy was fabricated by isothermal heat treatment process.The effects of isothermal process parameters such as holding temperature and holding time on the mi
A novel multilayer Mg-Al intermetallic coating on magnesium alloy was successfully obtained by AlCl3-NaCl molten salt bath treatment.Molten salt bath treatment at 400℃, which is lower than the treatme
Sheet incremental forming (ISF) is known for short lead time and requiring no dedicated dies.Thickness thinning, however, has always been a puzzle which hinds the wide application of ISF.And little wo
运用压汞实验数据建立毛管压力与含水饱和度的关系,根据多块岩样压汞曲线用指数函数拟合J函数与含水饱和度关系;应用自由水界面原理结合petrel软件建立自由水界面模型.运用克里金插值方法,结合西江24-3油田储层物性分析,通过水平井变差函数分析,在J函数的约束下用建立含水饱和度模型,充分体现地质、数学、计算机技术、油藏物理等理论综合建立储层模型的优势.
大情字井油田是一个典型的低丰度、低渗透、裂缝性岩性油藏,储层砂体多呈条带状展布,平面及纵向变化较快,因此针对局部注采井网不完善、水驱控制程度低、部分区块注采井网不适应的问题,进行了以提高水驱控制程度和提高采收率为核心的井网调整攻关方向研究.研究表明,大情字井油田具有一定的井网调整潜力,为低渗透油田的井网调整提供了借鉴意义.
长岭气田火山岩气藏岩性岩相复杂,储层裂缝发育,底水体积大,能量强,开发水侵风险大,并且单井产能差异大,气井合理产能确定难度大.以测试及试采动态资料为基础,运用气藏工程和渗流力学理论,准确计算气井绝对无阻流量,结合气井的高产因素及稳产因素,按无阻流量初步配产.利用采气指示曲线、合理生产压差、气井携液临界产量、采气速度等方法开展了气井优化配产研究,为气藏的合理开发提供了支持.