Experimental Research of Simultaneous Water and Gas Injection Technology into Injection Wells using Mixing Devices (Russian)

Experimental Research of Simultaneous Water and Gas Injection Technology into Injection Wells using Mixing Devices

10.2118/187734-ms ◽

2017 ◽

Cited By ~ 1

Author(s):

E. Sergeev ◽

P. Vinogradov ◽

U. Abutalipov ◽

A. Ivanov ◽

A. Kitabov ◽

...

Keyword(s):

Experimental Research ◽

Gas Injection ◽

Injection Wells ◽

Injection Technology

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Experimental Research on the Qualitative Characteristics of Iron Ores and Ferrous Waste That Can Be Used in Blast Furnace Mixt Injection Technology

Revista de Chimie ◽

10.37358/rc.70.19.11.7655 ◽

2019 ◽

Vol 70 (11) ◽

pp. 3835-3842

Author(s):

Mihai Dumitru Tudor ◽

Mircea Hritac ◽

Nicolae Constantin ◽

Mihai Butu ◽

Valeriu Rucai ◽

...

Keyword(s):

Blast Furnace ◽

Experimental Research ◽

Raw Materials ◽

Coal Dust ◽

Production Costs ◽

Iron Ores ◽

Fine Grained ◽

Experimental Laboratory ◽

Injection Technology ◽

Direct Use

Direct use of iron ores in blast furnaces, without prior sintering leads to a reduction in production costs and energy consumption [1,2]. Fine-grained iron ores and iron oxides from ferrous wastes can be used together with coal dust and limestone in mixed injection technology through the furnace tuyeres. In this paper are presented the results of experimental laboratory investigations for establishing the physic-chemical characteristics of fine materials (iron ore, limestone, pulverized coal) susceptible to be used for mixed injection in blast furnace. [1,4]. The results of the experimental research have shown that all the raw materials analyzed can be used for mixt injection in blast furnace.

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Technology and Effectiveness of Cast Iron Treatment by Gas Injection

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.457.459 ◽

2010 ◽

Vol 457 ◽

pp. 459-464

Author(s):

Edis B. Ten

Keyword(s):

Cast Iron ◽

Gas Injection ◽

Small Diameter ◽

Multiple Use ◽

Positive Effects ◽

Injection Treatment ◽

The Stability ◽

Injection Technology ◽

Stability Regime ◽

Structure Stabilization

In this work the development of the technology and equipment for gas injection treatment of cast iron by inert gas (nitrogen) is presented. The equipment includes the plunging lance as a lined steel pipe with nozzles. The nozzles are thin channels, which are lined by ceramic tubes with small-diameter. The lance has a multiple use, as it has calibrated channel sizes, and provide the stability regime of gas injection treatment. The characteristic of the gas injection technology consists of blowing of melt by gas, which is injected into the liquid cast iron through thin jet with a speed near to the velocity of sound. In this case, the dispersion of gas jets in small-sized bubbles is reached, therefore the refining effectiveness increases. The gas injection treatment shows the promotion of casting properties, improvement of homogeneity and fineness of structure, stabilization or increasing of mechanical properties, decreasing of casting defectiveness. The positive effects of the gas injection treatment is the result of complex action of the injecting gas into the cast iron melt. Together with refining and homogenizing action at specified conditions, it offers the modifying and alloying effects also.

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Meeting the Challenges in Design and Execution of Two High Rate Acid Gas Injection Wells

10.2118/91861-ms ◽

2005 ◽

Cited By ~ 2

Author(s):

Glen Benge ◽

E.G. Dew

Keyword(s):

Gas Injection ◽

High Rate ◽

Injection Wells ◽

Acid Gas ◽

Acid Gas Injection

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Study on Evaluation of Explosion Effects of Gas Injection Wells

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1051.962 ◽

2014 ◽

Vol 1051 ◽

pp. 962-966 ◽

Cited By ~ 3

Author(s):

Qian Huang ◽

Zhen Yi Liu ◽

Zhe Zuo

Keyword(s):

Gas Injection ◽

Gas Explosion ◽

Injection Wells ◽

Severe Injuries ◽

Associated Gas ◽

Safety Distance ◽

Combustible Gas ◽

Blast Effect ◽

Minor Injuries ◽

Tnt Equivalence

In this paper, blast effect of oil-associated gas in gas injection wells is determined when using air injection displacement, and on this basis, the relevant safety distance is determined also. Numerical simulation is used to calculate the overpressure distribution, explosion energy and TNT equivalence of combustible gas explosion in gas injection wells. Based on shock wave damage criterion, the safety distances in seven levels are obtained, which are personnel minor injuries, severe injuries, death, and destruction of buildings with mild, moderate, severe manage and destroying. Therefore, technical support is provided to accident prevention, emergency and rescue.

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Experimental research of condensate blockage and mitigating effect of gas injection

Petroleum ◽

10.1016/j.petlm.2018.03.008 ◽

2018 ◽

Vol 4 (3) ◽

pp. 292-299 ◽

Cited By ~ 1

Author(s):

Zhouhua Wang ◽

Shili Zhu ◽

Wei Zhou ◽

Huang Liu ◽

Yisheng Hu ◽

...

Keyword(s):

Experimental Research ◽

Gas Injection ◽

Condensate Blockage

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Damage Evaluation of Supercritical CO2 for Hydronibrile Nitrile(HNBR)

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.476-478.2582 ◽

2012 ◽

Vol 476-478 ◽

pp. 2582-2585

Author(s):

Xiao Lu Yang ◽

Feng Wang ◽

Qing Li ◽

De Ping Zhang ◽

De Zhi Zeng ◽

...

Keyword(s):

Mechanical Properties ◽

Gas Injection ◽

Co2 Corrosion ◽

Damage Evaluation ◽

Injection Wells ◽

Corrosion Morphology ◽

Before And After ◽

Safety Production ◽

Mechanical Properties And Corrosion ◽

Sealing Failure

CO2 corrosion for rubber materials makes sealing failure of downwell tools and annulus pressure even, which will endanger the safety production of gas injection wells. The high-temperature high-pressure autoclave was used to test supercritical CO2 corrosion for dumbbell-shaped hydronibrile nitrile with pressure 35MPa, temperature 90°C. The change in mechanical properties and corrosion morphology had been analyzed and compared before and after corrosion test in gas and liquid phase environment. Experimental results show that the hardness of hydronibrile nitrile was hardly changed and no dissolution occurred after corrosion. But the tensile strength decreased by 50%. In engineering design, the influence of corrosion on mechanical properties of rubber should be fully considered, and the mechanical properties of rubber in origin state should not be taken as the basis. The research results have provided evidence for the use of rubber materials in CO2 corrosion environment.

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Overview the 5 Years Experience of Intelligent Separate-Layer Injection Technology in B Offshore Oilfield

10.2523/iptc-21329-ms ◽

2021 ◽

Author(s):

Yigang Liu ◽

Zheng Chen ◽

Xianghai Meng ◽

Zhixiong Zhang ◽

Jian Zou ◽

...

Keyword(s):

Short Circuit ◽

Water Injection ◽

Operation Time ◽

Water Flooding ◽

Internal Diameter ◽

Injection Wells ◽

Mode Water ◽

Separate Layer ◽

Injection Technology ◽

Large Flow

Abstract Nowadays intelligent injection is considered as a new frontier for offshore oilfield. In order to improve the water injection indicators such as allocation frequency and qualification rate, intelligent separate-layer injection technology (ISIT) was researched, deployed and optimized in B offshore oilfield from 2015. In the course of 5 years’ project operation, some experience of success or failure was achieved. B offshore oilfield is the largest offshore oilfield in China with 33 water flooding oilfields and more than 800 water injection wells. With the continuous development, the problem of injection management mainly reflected in the contradiction between increasing demand of allocation and limited operation time and space was exposed. Two kinds of ISIT, cable implanted intelligent separate-layer injection technology(CISIT) and wireless intelligent separate-layer injection technology(WISIT), were deployed to solve the above problem. CISIT controlled the distributor downhole by electricity while WISIT controlled the distributor downhole by pressure pulse. By the use of ISIT, downhole nozzle's action, packer testing and downhole data monitoring could be remotely controlled on the ground. During the 5 years’ test, ISIT was optimized from the field breakdown including large flow range flowing test, cable protection project, efficient coding mode, water seepage resistance and so on. With the continuous optimization and quality control improvement, ISIT has overcome many problems, such as downhole short circuit and communication loss, and is becoming more stable and reliable. At present, ISIT can meet the needs of large flow injection(max 800m3/d per layer) and can adapt to the high frequency of acidizing and fracturing in offshore oilfield. The failure rate of ISIT has dropped to nearly 20% in 2020. As of December 2020, ISIT has formed series products for different internal diameter wells and applied in 156 water injection wells in B offshore oilfield. The average allocation frequency has increased from less than one time to 2 times per year. Through the application of ISIT, B offshore oilfield has accumulatively saved more than 2100 days of platform occupation and more than 73 million RMB yuan of allocation cost. The use of ISIT makes B offshore oilfield's injection become more efficient and intelligent. The 5 years’ experience of ISIT applicationin B offshore oilfield has a fairly referential significance for other offshore oilfields.

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