The process of long-distance hot oil pipeline is complicated, and its safety and optimization are contradictory. In actual production and operation, the theoretical calculation model of oil temperature along the pipeline has some problems, such as…
The process of long-distance hot oil pipeline is complicated, and its safety and optimization are contradictory. In actual production and operation, the theoretical calculation model of oil temperature along the pipeline has some problems, such as…
The process of long-distance hot oil pipeline is complicated, and its safety and optimization are contradictory. In actual production and operation, the theoretical calculation model of oil temperature along the pipeline has some problems, such as…
The process of long-distance hot oil pipeline is complicated, and its safety and optimization are contradictory. In actual production and operation, the theoretical calculation model of oil temperature along the pipeline has some problems, such as…
The fluid behavior in a pipeline of Liquefied Petroleum Gas (LPG)-according to the principles of conservation of mass and momentum-is governed by a set of Partial Differential Equations (PDE). In this work, such equations are modified with the…
The authors of the article have developed the computer application allows to determine the value of the friction coefficient and anti-turbulent additives efficiency with a high degree of accuracy. The program can be used in the calculations and…
The present work focuses on the improvement of flow properties during the transportation of heavy oil via 0.0254-, 0.0381-, and 0.0508-m-diameter pipelines. The effect of temperature, water cut, natural extract Madhuca Longifolia (ML), and potato…
During the pigging process in long-distance natural gas transportation pipelines, the pig is easy to block and cannot be located accurately, resulting in serious economic losses. The analysis of pipe and soil vibration rule can be used as the basis…
In the lubricated pipe flow (LPF) of non-conventional oils, a water annulus acts as the lubricant. It separates the viscous oil from the pipe wall by taking a steady state position at the high shear region in the pipe. Compared to transporting the…
The Friction Theory (FT) for viscosity modeling is applied to a characterization method based on the Saturates-Aromatics-Resins-Asphaltenes content (SARA) which makes use of the Perturbed-Chain version of the Statistical Associating Fluid Theory…
Coil-wound heat exchangers (CWHEs) have been widely used in natural gas liquefaction plants nowadays. But few studies on the condensation heat transfer and frictional pressure drop of mixed hydrocarbon refrigerants inside the tubes of CWHEs have been…
Friction and wear behavior of nitrile butadiene rubber in crude oil with sand was investigated by the reciprocating wear tester, while the movement of sand grains of different shapes during the wear process was also studied. Morphology and chemical…
To investigate the fracture propagation near the wellbore in natural fractured gas shale, a traction-separation relation is proposed and incorporated with the finite-discrete element method (FDEM) model. In the FDEM, shale matrix is discretized by…
With the increasing of fracturing scale and displacement, the risk of engineering operation is increased because the high friction of string. Therefore, it is very important to predict the friction in fracturing operation. Used the local…
In terms of nature, the internal combustion engine is a kind of power machinery. Through the analysis of the maintenance operation flow of diesel locomotives and combined with the control principle of diesel locomotives, the key cost waste points in…
Important hydraulic characteristics of liquid pipelines and pumps that are necessary to assist the power engineer in evaluating optimum drive characteristics are reviewed. Typical pipeline pumping stations are developed with characteristic curves at…
In terms of nature, the internal combustion engine is a kind of power machinery. Through the analysis of the maintenance operation flow of diesel locomotives and combined with the control principle of diesel locomotives, the key cost waste points in…
The transportation of heavy and extra-heavy crude oils from the head-well to the refinery is becoming important since their production is currently rising all over the world. Such oils are characterized by a low API gravity (103cP at 298.15K) that…
Metal working fluids (MWFs) play an important role in the machining processes by providing proper cooling and lubrication. The life of tool as well as the power consumption during machining can be minimized by applying cutting fluid at the chip–tool…