Experimental Study of Frictional Pressure Loss for Eccentric Drillpipe in Horizontal Wells

2018 ◽  
Author(s):  
Milad Khatibi ◽  
Ekaterina Wiktorski ◽  
Dan Sui ◽  
Rune Wiggo Time
Keyword(s):  
Experimental Study ◽  
Pressure Loss ◽  
Horizontal Wells

NUMERICAL AND EXPERIMENTAL STUDY OF PRESSURE LOSS AT THE INTAKE MANIFOLD OF A FORMULA-SAE VEHICLE

2017 ◽  
Author(s):  
ALVARO ROCHA ◽  
Luan Correia ◽  
Raimundo Duarte ◽  
Emerson da Trindade Marcelino
Keyword(s):  
Experimental Study ◽  
Pressure Loss ◽  
Intake Manifold ◽  
Formula Sae

Experimental study on wellbore cleanout in horizontal wells

2019 ◽  
Vol 177 ◽  
pp. 466-478 ◽  
Author(s):  
Soham Pandya ◽  
Ramadan Ahmed ◽  
Subhash Shah
Keyword(s):  
Experimental Study ◽  
Horizontal Wells

scholarly journals Experimental Study of Pressure Loss and Rheo-Optical Behavior of CTAB/NaSal Aqueous Solution under Elongational Flow

2009 ◽  
Vol 37 (1) ◽  
pp. 39-46 ◽  
Author(s):  
Makoto Okawara ◽  
Tomiichi Hasegawa ◽  
Nobuhiro Yamada ◽  
Takatsune Narumi
Keyword(s):  
Aqueous Solution ◽  
Experimental Study ◽  
Pressure Loss ◽  
Elongational Flow ◽  
Optical Behavior

scholarly journals Experimental Study on the Local Drag of Completion String with Packers in Horizontal Wells

Coatings ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 657 ◽  
Author(s):  
Qimin Liang ◽  
Bairu Xia ◽  
Baolin Liu ◽  
Zhen Nie ◽  
Baokui Gao
Keyword(s):  
Experimental Study ◽  
Oil And Gas ◽  
Theoretical Calculations ◽  
Horizontal Wells ◽  
Experimental Results ◽  
Economic Losses ◽  
Horizontal Section ◽  
Friction Coefficients ◽  
Oil And Gas Fields ◽  
Gas Fields

The multistage stimulation technology of horizontal wells has brought huge benefits to the development of oil and gas fields. However, the completion string with packers often encounters stuck due to the large drag in the horizontal section, causing huge economic losses. The local drag of the completion string with packers in the horizontal section is very complicated, and it has not been fully understood by theoretical calculations. A local drag experiment is designed to simulate the influence of microsteps and cuttings on the local drag of the completion string with packers in the inclined and horizontal sections. An obvious increase of the local drag of the packer is found at microsteps of the horizontal section, and the local drag is greatly affected by the amount of sand. In addition, the string with packers will vibrate during the tripping process in the deviated section, and the local drag is different when different amounts of sand are in the hole, but the change law is similar. The experimental results show that the friction coefficients of the packers with different materials in the horizontal section vary greatly, resulting in different local drags. It indicates that the local drag of the completion string not only depends on the microsteps and sand quantity in the wellbore, but also on the material difference of the packers. Only if microsteps and cuttings are removed can the completion string be tripped into horizontal wells smoothly.

scholarly journals Experimental Study on Pressure Loss of CTAB/NaSal Aqueous Solution through Slots and a Capillary

2008 ◽  
Vol 36 (3) ◽  
pp. 137-143 ◽  
Author(s):  
Makoto Okawara ◽  
Tomiichi Hasegawa ◽  
Yoshihiko Iino ◽  
Takatsune Narumi
Keyword(s):  
Aqueous Solution ◽  
Experimental Study ◽  
Pressure Loss

Design and Experimental Study on the Urea-SCR Converter Exhaust System of the Marine Diesel Engine

2013 ◽  
Vol 291-294 ◽  
pp. 1889-1894
Author(s):  
Lei Jiang ◽  
Jun Huang
Keyword(s):  
Experimental Study ◽  
Diesel Engine ◽  
Pressure Loss ◽  
Catalytic Converter ◽  
Exhaust System ◽  
Marine Diesel Engine ◽  
Exhaust Gas ◽  
Marine Diesel ◽  
New Type ◽  
Design Requirements

Urea-SCR catalytic converter can effectively reduce the NOx emission of diesel engines, but meanwhile catalytic converter will cause some pressure loss in the exhaust system, which has negative influences on the engine performances. In this paper, the method of theoretical analysis calculated the pressure loss of the SCR catalytic converter, and designing a new type of exhaust gas pipe. Through the test to meet the design requirements,the results can provide a reference for optimum design of SCR catalytic converters and assembling.

Experimental Study on the Property of Regenerating Concrete in Different Graduation

2012 ◽  
Vol 174-177 ◽  
pp. 921-924
Author(s):  
Xun Zhong Zhang ◽  
Ping Liu ◽  
Bin Jia
Keyword(s):  
Experimental Study ◽  
Moisture Content ◽  
Water Absorption ◽  
Packing Density ◽  
Pressure Loss ◽  
Reference Value ◽  
New Method ◽  
Strength Grade ◽  
Variation Characteristics

Through experiments based on three different graduations of regenerating concrete,the paper analyzes the parameters variation characteristics, such as performance of the density, water absorption, moisture content, packing density and crushed indicators.The research shows that Pressure loss of the quality of the regenerating concrete is proportional with loading force. What’s more, it can also reflect the own strength grade of aggregate in a more direct way and should be a new method to assess aggregate strength. Simultaneously, it gives us a relatively superior graduation and provides reference value for guiding actual project.

scholarly journals Visualization Experimental Study on Well Spacing Optimization of SAGD with a Combination of Vertical and Horizontal Wells

ACS Omega ◽  
2021 ◽  
Author(s):  
Lei Tao ◽  
Lilong Xu ◽  
Xiao Yuan ◽  
Wenyang Shi ◽  
Na Zhang ◽  
...  
Keyword(s):  
Experimental Study ◽  
Horizontal Wells ◽  
Well Spacing

scholarly journals Gas turbine outlets: test results

2020 ◽  
Vol 4 (394) ◽  
pp. 121-128
Author(s):  
Nikolay N. Ponomarev
Keyword(s):  
Experimental Study ◽  
Gas Turbine ◽  
Pressure Loss ◽  
Total Pressure ◽  
Mutual Influence ◽  
Engineering Calculation ◽  
Total Pressure Loss ◽  
Flow Section ◽  
Pressure Losses ◽  
Flow Parameters

Object and purpose of research. The object of this work is gas turbine outlet consisting of axial-radial diffuser with the struts and the volute. The purpose is to create a methodology for engineering calculations, taking into account the mutual influence of the diffuser and the volute. Materials and methods. Experimental study of the flow in the models of outlets by measuring total and static pressure in characteristic sections. Calculation of integral and averaged flow parameters in measurement sections. Visualization of boundary flows. Based on the experimental results, development of regression models for the correction factors to be applied in the theoretical model, with selection of relevant factors. Main results. An experimental study of 23 variants of models with a total volume of 112 experimental points (modes) was carried out. On the basis of the experiment, methodology and program for engineering calculation of total pressure losses in the outlets were developed. It was found that the installation of guide blades and radial ribs in the diffuser in order to reduce local expansion angles with the ultimate purpose of mitigating total pressure losses actually does not lead to this result due to the because the flow in the diffuser becomes asymmetric due to its interaction with the volute. Visualization of boundary flows in the diffusers and the volutes has been performed, which makes it possible to identify the locations of separations causing increased pressure losses. Conclusion. An engineering method for calculating the total pressure loss in gas turbine outlet has been developed. The technique makes it possible, taking size restrictions into account, to select the geometry of the flow section that ensures minimum total pressure loss.

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