CaCO3 INCRUSTATION IMPACT ON PRESSURE DROP IN SAND CONTROL SYSTEMS BY CFD TECHNIQUE

Correct design and layout of the SCR BYPASS SYSTEM is critically important to the efficiency and operation of power plants. Utilities have even had to consider closing down plants that could not efficiently operate their Bypass Systems. Numerous gas path configurations are available, which vary considerably based on site and space limitations, construction lifting capabilities and site construction limitations, as well as other key considerations specific to each plant site. This technical paper discusses a number of arrangements, technical selection and layout criteria. This paper discusses case studies and design details of approximately 20,000 MW of successful bypass system equipment which improve system performance, reduce pressure drop, reduce abrasive wear, substantially minimize maintenance costs and simplify operating requirements.

Download Full-text

Analysis and synthesis of automatic control systems of pneumatic transport and technological chips account

Forestry Engineering Journal ◽

10.12737/1787 ◽

2013 ◽

Vol 3 (3) ◽

pp. 199-203 ◽

Cited By ~ 1

Author(s):

Петровский ◽

Vladislav Petrovskiy ◽

Щедрин ◽

Sergey Shchedrin

Keyword(s):

Pressure Drop ◽

Automatic Control ◽

Control Systems ◽

Measurement System ◽

Pneumatic Transport ◽

Mathematical Relationship ◽

Automatic Control Systems ◽

Analysis And Synthesis ◽

Relationship Of

The article shows the task solution of mass accounting, volume of pneumatically transported chips per time unit by measuring the pressure drop for the pneumatic transport conveying flow after the feeder. This system has been tested at Bratsk FIC and its implementation was based on the calibration of the measurement system, which takes into account the mathematical relationship of chipping flow per unit of time and reducing the pressure of pneumatic transport.

Download Full-text

A novel chemical-consolidation sand control composition: Foam amino resin system

e-Polymers ◽

10.1515/epoly-2019-0001 ◽

2019 ◽

Vol 19 (1) ◽

pp. 1-8 ◽

Cited By ~ 1

Author(s):

Xiaosen Shang ◽

Yingrui Bai ◽

Zengbao Wang ◽

Quan Wang ◽

Changyin Dong

Keyword(s):

Control Systems ◽

Room Temperature ◽

Horizontal Wells ◽

Curing Temperature ◽

Control Technique ◽

Foaming Properties ◽

Resin System ◽

Sand Control ◽

Amino Resin ◽

Optimized Conditions

AbstractA novel chemical-consolidation method based foam amino resin system of sand control systems in the oilfield is reported. This sand control technique is more superior to the conventional method owing to its advantages such as the outstanding resistance and lower density as well as simple process preparation. The apparent density of the foam resin system ranges from 0.528 g/cm3 to 0.634 g/cm3 at room temperature. Moreover, the system has excellent foaming properties and excellent compatibility with the formation fluids. In addition, the foam amino resin sand consolidation system was optimized and investigated. Simultaneously, the sand-fixing performance of the foam resin system was comprehensively assessed. The optimized conditions are as follows: curing temperature, 60°C; curing time, 12 h; consolidated core compressive strength, 6.28 MPa. Furthermore, the consolidated core showed remarkable resistance to the formation fluids. In summary, the foam resin system effectively met the requirements of the sand control and the horizontal wells in the oilfield.

Download Full-text

Applications That Reduce the Pressure Drop of Air Pollution Control Systems: From Canopy Hood to Stack

AISTech2020 Proceedings of the Iron and Steel Technology Conference ◽

10.33313/380/010 ◽

2020 ◽

Author(s):

A. Feruglio ◽

M. Cudicio

Keyword(s):

Air Pollution ◽

Pressure Drop ◽

Control Systems ◽

Pollution Control ◽

Air Pollution Control

Download Full-text

Design for Reliability: Experimental and Numerical Simulation of Cased and Perforated Completions with Standalone Screen

SPE Drilling & Completion ◽

10.2118/201315-pa ◽

2021 ◽

pp. 1-27

Author(s):

Morteza Roostaei ◽

Mohammad Soroush ◽

Farshad Mohammadtabar ◽

Mohammad Mohammadtabar ◽

Seyed Abolhassan Hosseini ◽

...

Keyword(s):

Pressure Drop ◽

Cfd Simulation ◽

Control Method ◽

Simulation Models ◽

Cost Effective ◽

Optimized Design ◽

Annular Gap ◽

Sand Control ◽

Wellbore Pressure ◽

Perforated Completions

Summary The historical challenges and high failure rate of using standalone screen in cased and perforated wellbores pushed several operators to consider cased-hole gravel packing or frac packing as the preferred completion. Despite the reliability of these options, they are more expensive than a standalone screen completion. In this paper, we employ a combined physical laboratory testing and computational fluid dynamics (CFD) for laboratory scale and field scale to assess the potential use of the standalone screen in completing the cased and perforated wells. The aim is to design a fit-to-purpose sand control method in cased and perforated wells and provide guidelines in perforation strategy and investigate screen and perforation characteristics. More specifically, the simultaneous effect of screen and perforation parameters, near wellbore conditions on pressure distribution and pressure drop are investigated in detail. A common mistake in completion operation is to separately focus on the design of the screen based on the reservoir sand print and design of the perforation. If sand control is deemed to be required, the perforation strategy and design must go hand in hand with sand control design. Several experiments and simulation models were designed to better understand the effect of perforation density, the fill-up of the annular gap between the casing and screen, perforation collapse, and formation and perforation damage on pressure drop. The experiments consisted of a series of step-rate tests to investigate the role of fluid rate on pressure drop and sand production. There is a critical rate at which the sand filling up the annular gap will fluidize. Both test results and CFD simulation scenarios are comparatively capable to establish the relation between wellbore pressure drop and perforation parameters and determine the optimized design. The results of this study highlight the workflow to optimize the standalone screen design for the application in cased and perforated completions. The proper design of standalone screen and perforation parameters allows maintaining cost-effective well productivity. Results of this work could be used for choosing the proper sand control and perforation strategy.

Download Full-text

Evaluation model of two-stage gravel packing sand control well based on additional pressure drop

IOP Conference Series Earth and Environmental Science ◽

10.1088/1755-1315/300/2/022061 ◽

2019 ◽

Vol 300 ◽

pp. 022061

Author(s):

Minhui Qi ◽

Mingzhong Li ◽

Tong Li ◽

Jun Liang ◽

Chunting Liu ◽

...

Keyword(s):

Pressure Drop ◽

Evaluation Model ◽

Two Stage ◽

Additional Pressure ◽

Sand Control ◽

Gravel Packing

Download Full-text

Pressure Drop Characteristics and Reserves Calculation Method of Gas Reservoir of Multi-Layer Unconsolidated Sandstone

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.616-618.864 ◽

2012 ◽

Vol 616-618 ◽

pp. 864-869

Author(s):

Pang Jin ◽

Hong Liu ◽

Xiao Lu Wang

Keyword(s):

Pressure Drop ◽

Formation Pressure ◽

Accurate Calculation ◽

Gas Wells ◽

Gas Reservoir ◽

Gas Field ◽

Practical Result ◽

Straight Line ◽

Sand Control ◽

Pressure Test

Taking Sebei gas field as an example, this paper sorts hydrostatic pressure test data over the years and summarizes the reasons that the formation pressure drop curve generates a straight line, up-warping and recurvation from the perspective of water invasion, perforation adding, layer adjusting, sand burying, and sand control as well as inter-layer interference and inter-well interference, with typical wells analyzed and explained. On this basis, two kinds of mass balance correction models which have taken the offset of the pressure drop curve into account are proposed to calculate the dynamic reserves of gas wells with different offset shapes of pressure drop curves. Practical result shows the simple concept and strong practicality of this method, which provides an effective method for the accurate calculation of dynamic reserves of such gas reservoir.

Download Full-text