A High-Pressure Swivel for Natural Gas Service and Oscillating Motion in a Marine Environment

1982 ◽  
Vol 104 (3) ◽  
pp. 229-234
Author(s):  
J. T. Herbert ◽  
J. E. Ortloff
Keyword(s):  
High Pressure ◽  
Natural Gas ◽  
Development Program ◽  
Small Degree ◽  
Qualification Test ◽  
Test Program ◽  
Joint Development ◽  
Elastomeric Bearing ◽  
Oscillating Motion ◽  
Maximum Design

A joint development program has produced a unique flowline swivel for high-pressure natural gas service under continuous, small degree rotation, oscillating service. The swivel uses an elastomeric bearing element made up of alternate, frusto-conical shaped rings of metal and rubber (elastomer) to absorb continuous small degree rotary oscillations or flexures of the swivel. It accommodates larger oscillations, including complete 360-deg rotations, by locking the elastomeric element at its maximum design flexure capability and permitting the entire shaft assembly to rotate relative to the housing. A 6-in. (152.4-mm), 6000-psig (41,370-kPa) prototype successfully passed a rigorous qualification test program. The swivel should be useful in offshore marine production riser systems and loading terminals.

CCM.FF-K5: a comparison of flow rates for natural gas at high pressure

Metrologia ◽  
2006 ◽  
Vol 43 (1A) ◽  
pp. 07001-07001 ◽  
Author(s):  
Dietrich Dopheide
Keyword(s):  
High Pressure ◽  
Natural Gas ◽  
Flow Rates

Experimental and simulation study on high-pressure V-L-S cryogenic hybrid network for CO2 capture from highly sour natural gas

2021 ◽  
Author(s):  
Khuram Maqsood ◽  
Abulhassan Ali ◽  
Rizwan Nasir ◽  
Aymn Abdul Rehman ◽  
Abdullah. S. Bin Mahfouz ◽  
...  
Keyword(s):  
High Pressure ◽  
Natural Gas ◽  
Co2 Capture ◽  
Simulation Study ◽  
Hybrid Network

ANALISA KINERJA CNG COOLER PADA SISTEM CNG PLANT

2021 ◽  
Vol 21 (2) ◽  
pp. 91-94
Author(s):  
Seno - Darmanto ◽  
Muhammad Fahrudin
Keyword(s):  
High Pressure ◽  
Heat Exchanger ◽  
Natural Gas ◽  
Peak Load ◽  
Normal Pressure ◽  
Gas Storage ◽  
Compressed Natural Gas ◽  
Plant System ◽  
Process Utility

CNG Cooler is a heat exchanger in CNG Plant System which has function to reduce CNG temperature. CNG (Compressed Natural Gas) is natural gas which compressed by gas compressor from normal pressure up to certain high pressure. CNG Plant is gas storage and supply facility for PLTGU when it work at peak load hours. CNG Cooler reduce temperature of CNG which out from gas compressor before saved in storage utility which purpose to avoid over heating in the next process, increase durability of the next process utility, and make gas storage utility design easy.

A Numerical Investigation on Mixing Characteristics of Natural Gas Jets With High-Pressure Injection

2021 ◽  
Author(s):  
Long Liu ◽  
Tianyang Dai ◽  
Qian Xiong ◽  
Yuehua Qian ◽  
Bo Liu
Keyword(s):  
High Pressure ◽  
Natural Gas ◽  
Air Entrainment ◽  
Gas Jet ◽  
Swirl Ratio ◽  
Marine Engine ◽  
Low Speed ◽  
Pressure Injection ◽  
Mixing Characteristics ◽  
High Pressure Injection

Abstract With increasingly stringent emissions limitation of greenhouse gas and atmospheric pollutants for ship, the direct injection of natural gas on the cylinder head with high-pressure injection is an effective method to make a high power output and decrease harmful gas emissions in marine natural gas dual fuel engines. However, the effects on mixing characteristics of high-pressure natural gas underexpanded jet have not been fully understood. Especially, the injection pressure is up to 30 MPa with large injection quantity and critical surrounding gas conditions for the low-speed two-stroke marine engine. Therefore, this research is focused on the flow and mixing process of the natural gas jet with high-pressure injection under the in-cylinder conditions of low-speed two-stroke marine engine. The gas jet penetration, the distribution of velocity and density, the equivalence ratio and air entrainment have been analyzed under different nozzle hole diameters by numerical simulation. The effects of surrounding gas conditions including pressure, temperature and swirl ratio on air entrainment and equivalence ratio distribution were studied in detail. From the numerical simulation, it is found that the mixing characteristics of natural gas jet can be improved under in-cylinder conditions of higher ambient temperature and swirl ratio, which is relevant to the low-speed two-stroke marine engine.

Development and Evaluation of a Mobile Plant to Prepare Natural Gas for Use in Foam Fracturing Treatments

2017 ◽  
Author(s):  
Griffin Beck ◽  
Melissa Poerner ◽  
Kevin Hoopes ◽  
Sandeep Verma ◽  
Garud Sridhar ◽  
...  
Keyword(s):  
High Pressure ◽  
Natural Gas ◽  
Oil And Gas ◽  
Department Of Energy ◽  
Gas Processing ◽  
Current State ◽  
Fracturing Process ◽  
Mobile Plant ◽  
Processing Plants ◽  
Production Techniques

Hydraulic fracturing treatments are used to produce oil and gas reserves that would otherwise not be accessible using traditional production techniques. Fracturing treatments require a significant amount of water, which has an associated environmental impact. In recent work funded by the Department of Energy (DOE), an alternative fracturing process has been investigated that uses natural gas as the primary fracturing fluid. In the investigated method, a high-pressure foam of natural gas and water is used for fracturing, a method than could reduce water usage by as much as 80% (by volume). A significant portion of the work focused on identifying and optimizing a mobile processing facility that can be used to pressurize natural gas sourced from adjacent wells or nearby gas processing plants. This paper discusses some of the evaluated processes capable of producing a high-pressure (10,000 psia) flow of natural gas from a low-pressure source (500 psia). The processes include five refrigeration cycles producing liquefied natural gas as well as a cycle that directly compresses the gas. The identified processes are compared based on their specific energy as calculated from a thermodynamic analysis. Additionally, the processes are compared based on the estimated equipment footprint and the process safety. Details of the thermodynamic analyses used to compare the cycles are provided. This paper also discusses the current state of the art of foam fracturing methods and reviews the advantages of these techniques.

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