The Kvaerner Multiphase Pump System for Deepwater Applications

2001 ◽  
Author(s):  
Ove F. Jahnsen ◽  
John Yardley ◽  
Geoff High ◽  
Brede Thorkilsen
Keyword(s):  
Development Program ◽  
Gas Content ◽  
Modular System ◽  
Pump System ◽  
Multiphase Pump ◽  
Current Test ◽  
System Solution ◽  
Twin Screw ◽  
The Individual ◽  
Pump Inlet

Abstract This paper describes Kvaerner’s prototype subsea multiphase pump system and the DEMO 2000 development program (current test completion date 2nd Q2001). Reference is also made to service proven sub-systems, components and subsea expertise incorporated into the pump module and system design. Availability and reliability consideration together with novel plans for the future is presented. The Subsea Multiphase Pump and motor are packaged into a modular system solution that is readily adaptable to template and manifold configurations and maximises the use of existing qualified components and sub-systems. A guidewireless system is adopted and Kvaerner’s design ensures self-alignment upon installation at simple flowbase interfaces, making it ideal for deepwater applications. Due to the individual 40 tonne weight, and moonpool dimensions, of both flow base and pump module, light monohull vessels can be utilised to execute installation and retrieval. The pump unit is Bornemann twin-screw design, service proven and modified for subsea use up to 2000-meter water depth, driven by an oil-filled Loher electric motor that provides efficient power with corresponding low weight. Some main pump features are flexible operation covering all gas-liquid ratios together with tolerance for slug flow and some sand. Of particular importance, compared to centrifugal pump designs, the twin-screw volumetric arrangement is able to maintain the pressure boost specification independent of gas content at the pump inlet, and without an upstream mixing tank.

scholarly journals SUBSEA MULTIPHASE PUMPING SYSTEM X GAS LIFT: AN EXERGO-ECONOMIC COMPARISON

2004 ◽  
Vol 3 (2) ◽  
Author(s):  
C. Y. Nakashima ◽  
S. Oliveira Jr. ◽  
E. F. Caetano
Keyword(s):  
Offshore Platform ◽  
Production Costs ◽  
Pump System ◽  
Operational Conditions ◽  
Multiphase Pump ◽  
Pumping System ◽  
Artificial Lift ◽  
Study Results ◽  
Twin Screw ◽  
Gas Lift

This paper presents a methodology for an exergetic comparison between two artificial lift systems: a gas lift and a twin-screw multiphase pump system, and a standalone offshore platform. A software (Hysys.Process v2.1) was used to simulate an offshore platform with the artificial lift methods and calculate all properties (including exergy) of the material and energy streams. The twin-screw multiphase pump behavior was simulated with a thermodynamic model developed recently (NAKASHIMA (2000) and NAKASHIMA, OLIVEIRA and CAETANO (2002)). The operational conditions of the PETROBRAS 7- MRL-72D-RJS well operating with cited systems were predicted by an internal study conducted in PETROBRAS (BARUZZI et al. (2001a) and partially published in BARUZZI et al. (2001b)). The comparisons cover the range of 2000 to 2020, the same range adopted in the study. Results show that in general the production costs are lower when the multiphase pump is used. The main advantages of this method over the gas lift is the absence of material (gas) recycle and a better energy management.

scholarly journals SUBSEA MULTIPHASE PUMPING SYSTEM X GAS LIFT: AN EXERGO-ECONOMIC COMPARISON

2004 ◽  
Vol 3 (2) ◽  
pp. 107 ◽  
Author(s):  
C. Y. Nakashima ◽  
S. Oliveira Jr. ◽  
E. F. Caetano
Keyword(s):  
Production Costs ◽  
Pump System ◽  
Operational Conditions ◽  
Multiphase Pump ◽  
Pumping System ◽  
Artificial Lift ◽  
Study Results ◽  
Twin Screw ◽  
Gas Lift ◽  
Economic Comparison

This paper presents a methodology for an exergetic comparison between two artificial lift systems: a gas lift and a twin-screw multiphase pump system, and a standalone offshore platform. A software (Hysys.Process v2.1) was used to simulate an offshore platform with the artificial lift methods and calculate all properties (including exergy) of the material and energy streams. The twin-screw multiphase pump behavior was simulated with a thermodynamic model developed recently (NAKASHIMA (2000) and NAKASHIMA, OLIVEIRA and CAETANO (2002)). The operational conditions of the PETROBRAS 7- MRL-72D-RJS well operating with cited systems were predicted by an internal study conducted in PETROBRAS (BARUZZI et al. (2001a) and partially published in BARUZZI et al. (2001b)). The comparisons cover the range of 2000 to 2020, the same range adopted in the study. Results show that in general the production costs are lower when the multiphase pump is used. The main advantages of this method over the gas lift is the absence of material (gas) recycle and a better energy management.

Numerical Investigation on a Twin-Screw Multiphase Pump Under low IGVF

2021 ◽  
Vol 14 (4) ◽  
pp. 335-344
Author(s):  
Shuaihui Sun ◽  
Pengbo Wu ◽  
Pengcheng Guo ◽  
Guangzhi Yi ◽  
Ahmed Kovacevic
Keyword(s):  
Numerical Investigation ◽  
Multiphase Pump ◽  
Twin Screw

Status of the Automotive Ceramic Gas Turbine Development Program: Year Five Progress

1996 ◽  
Author(s):  
Tsubura Nisiyama ◽  
Norio Nakazawa ◽  
Masafumi Sasaki ◽  
Masumi Iwai ◽  
Haruo Katagiri ◽  
...  
Keyword(s):  
Gas Turbine ◽  
Development Program ◽  
Ceramic Materials ◽  
Inlet Temperature ◽  
Test Rig ◽  
Target Values ◽  
Ceramic Components ◽  
Combined Test ◽  
And Performance ◽  
The Individual

Petroleum Energy Center of Japan has been carrying out a 7-year development program to prove the potential of an automotive ceramic gas turbine for five years with the support of the Ministry of International Trade and Industry. The ceramic gas turbine now under development is a regenerative single shaft engine. The output is 100kW, and the turbine inlet temperature (TIT) is 1350°C. All the ceramic components are now entering the 1350°C TIT test phase after completing 1200°C TIT evaluation tests, including durability tests, in various types of test rigs. The compressor-turbine combined test rig and the full assembly test rig which is the same as an actual engine and incorporates all the components are now going through 1200°C TIT function and performance evaluation tests. In the near future, we are planning to increase the TIT to 1350°C. In consideration of the current level of high-temperature, long-term strength available from the ceramic materials, we decided to change the rated speed to 100,000 rpm because the initial rated speed of 110,000 rpm, if unchanged, involves considerable risks. Then we reviewed mainly the designs of the compressor and turbine and revised the target values of the individual components to match the specifications that satisfy the target performance of the engine.

Experimental Investigation of Wellhead PCP for Gas Well Deliquification

2013 ◽  
Author(s):  
Gerald Morrison ◽  
Michael Glier ◽  
Shankar Narayanan ◽  
Jun Xu ◽  
Stuart Scott ◽  
...  
Keyword(s):  
Mechanical Efficiency ◽  
Isothermal Flow ◽  
Water Mixture ◽  
Pump System ◽  
Gas Well ◽  
Interference Fit ◽  
Multiphase Pump ◽  
Test Conditions ◽  
Full Speed ◽  
Process Fluid

A Progressive Cavity Pump (PCP) was evaluated for use as a multiphase pump. The pump is a 576 gpm, constant wall thickness PCP operating with an air/water mixture. Thermocouples were installed along the length of the pump to monitor the elastomer temperature to determine when excessive temperatures were present. Inlet pressures of 15, 30, and 45 psig were considered with pressure rises of 30, 60, 90, 120, and 150 psig. The GVF’s considered were 20, 40, 60, 90, and 98%. It was determined that with the water and air mixture, 98% was the maximum GVF at which the pump could operate continuously. The volumetric efficiency, pump effectiveness, and mechanical efficiency were calculated. The temperature rise across the pump was small, so an isothermal flow was assumed. The PCP investigated has a steel rotor and an elastomer stator that were manufactured with an interference fit. This resulted in volumetric efficiencies above 95% for all test conditions at full speed. This interference fit produces a significant drag on the rotor which is relatively constant at a given speed over the entire operating range considered. This results in the mechanical efficiency being low, 15 to 20%, for ΔP = 30 psig but approaching 60% at ΔP = 150 psi for 0% GVF. The mechanical efficiency decreased with increasing GVF to a low of 28% at ΔP = 150 psi for 98% GVF. The GVF specified here is the actual GVF passing through the pump. If a liquid recirculation system were added to the pump reducing the GVF in the pump, higher efficiencies and the ability to operate at 100% GVF for the process fluid entering the pump system can be obtained.

scholarly journals Study of the Influence of the Almond Shell Variety on the Mechanical Properties of Starch-Based Polymer Biocomposites

Polymers ◽  
2020 ◽  
Vol 12 (9) ◽  
pp. 2049 ◽  
Author(s):  
Ana Ibáñez García ◽  
Asunción Martínez García ◽  
Santiago Ferrándiz Bou
Keyword(s):  
Charpy Impact ◽  
X Ray Diffraction ◽  
Almond Shell ◽  
Scanning Calorimetry ◽  
Commercial Mixture ◽  
Hardness Tests ◽  
Twin Screw ◽  
Ft Ir ◽  
Mechanical Tensile ◽  
The Individual

This article is focused on the development of a series of biodegradable and eco-friendly biocomposites based on starch polymer (Mater-Bi DI01A) filled with 30 wt% almond shell (AS) of different varieties (Desmayo Rojo, Largueta, Marcona, Mollar, and a commercial mixture of varieties) to study the influence of almond variety in the properties of injected biodegradable parts. The different AS varieties are analysed by means of Fourier transform infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA), Scanning Electron Microscopy (SEM), and X-ray Diffraction (XRD). The biocomposites are prepared in a twin-screw extruder and characterized in terms of their mechanical (tensile, flexural, Charpy impact, and hardness tests) and thermal properties (differential scanning calorimetry (DSC) and TGA). Despite observing differences in the chemical composition of the individual varieties with respect to the commercial mixture, the results obtained from the mechanical characterisation of the biocomposites do not present significant differences between the diverse varieties used. From these results, it was concluded that the most recommended option is to work with the commercial mixture of almond shell varieties, as it is easier and cheaper to acquire.

OPPORTUNITIES UNLIMITED1

1974 ◽  
Vol 37 (5) ◽  
pp. 269-271
Author(s):  
William B. Lane
Keyword(s):  
Product Development ◽  
Regulatory Agency ◽  
Training Programs ◽  
Development Program ◽  
Food Product ◽  
Educational Institutions ◽  
Research Projects ◽  
Food Needs ◽  
Food Product Development ◽  
The Individual

Recent surveys show that there are unlimited opportunities in the food, dairy, and regulatory agency fields. An entire new food product development program has started with the space age. It has become imperative to consider anew universal nutrition problems. Industry and educational institutions, as well as the individual himself have a responsibility to develop present opportunities through recruitment programs, training programs, research projects, and incentive plans. The future holds higher technological demands which must: be developed to meet the food needs of the world's population.

scholarly journals Status of the Automotive Ceramic Gas Turbine Development Program: Year 3 Progress

1994 ◽  
Author(s):  
Takane Itoh ◽  
Hidetomo Kimura
Keyword(s):  
Gas Turbine ◽  
Gas Turbines ◽  
Performance Test ◽  
Development Program ◽  
Turbine Rotor ◽  
Maximum Speed ◽  
Inlet Temperature ◽  
Test Rig ◽  
Thermal Test ◽  
The Individual

Under the ongoing seven-year program, designated “Research and Development of Automotive Ceramic Gas Turbine Engine (CGT Program)”, started in June 1990. Japan Automobile Research Institute. Inc. (JARI) is continuing to address the issues of developing and demonstrating the advantageous potentials of ceramic gas turbines for automotive use. This program has been conducted by the Petroleum Energy Center (PEC) with the financial support of MITI. The basic engine is a 100 kW, single-shaft regenerative engine having a turbine inlet temperature of 1350°C and a rotor speed of 110,000 rpm. In the third year of this program, the experimental evaluation of the individual engine components and various assembly tests in a static thermal test rig were continued. Exhaust emissions were also measured in a performance test rig for an initially designed pre-mixed, pre-vaporized lean (PPL) combustor. A maximum speed of 130,700 rpm was obtained during hot spin tests of delivered ceramic turbine rotors, which was almost the same level as during cold spin tests. A dynamic thermal test including a centrifugal compressor, a ceramic radial turbine rotor and all the ceramic stationary hot parts was initiated.

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