scholarly journals Modernization of Two-Phase Oil and Gas Separator

2020 ◽  
Vol 33 (02) ◽  
pp. 616-622
Author(s):  
Guzel Rafikovna Ganieva ◽  
Putu Aunda Niradgnani
Keyword(s):  
High Pressure ◽  
Gas Separation ◽  
Oil And Gas ◽  
Raw Materials ◽  
Low Pressure ◽  
Technological Scheme ◽  
Operating Costs ◽  
Two Phase ◽  
Oil Separation ◽  
Gas Separator

Separators play an important role in the basis of the technological scheme and field preparation of oil and gas. Separation is the process of oil separation from gas. Depending on the requirements for the feedstock, separators are distinguished according to the principle of operation and purpose. In this paper, the company "PT Pertamina EP Asset 3 Subang", Indonesia (Nirajani) is considered as an example. Dimensions, efficiency, reliability of equipment, capital and operating costs are the main indicators of separator work and productivity. "Subang PT Pertamina EP Asset 3 Subang" collection station has 3 horizontal two-phase separators (high pressure, low pressure and test separator). In 2020, it is planned to increase the extraction of raw materials. In this regard, the aim of this work is to modernize the existing two-phase horizontal separator operated at the field. To achieve this goal, it is necessary to study the design of the existing separator, and calculate its performance (Nirajani). After all the calculations, it is necessary to choose a separator suitable for performance. Modernization of the existing separator is economically feasible for this enterprise.

GENERALIZATION OF AN ANALYTICAL TWO-PHASE STEAM FLOW CALCULATOR TO HIGH-PRESSURE CASES

2006 ◽  
Vol 30 (4) ◽  
pp. 581-595
Author(s):  
M. J. Kermani ◽  
M. Zayemouri ◽  
M. Saffar Avval
Keyword(s):  
High Pressure ◽  
Local Equilibrium ◽  
Low Pressure ◽  
Ideal Gas ◽  
Steam Flow ◽  
Stagnation Temperature ◽  
Two Phase ◽  
Dimensional Parameter ◽  
Phase Mixture ◽  
Experimental Values

Extension of a recently developed analytical two-phase steam flow calculator to high pressure cases is performed in this paper. The initial solution, obtained in earlier study was developed for low pressure cases. In low pressure cases, the vapor portion of the two-phase mixture reliably obeys the ideal gas Equation of State (EOS). In the present high pressure study, real gas effects are included using the more suitable EOS of “Lee-Kesler”. The model similar to the low pressure model assumes local equilibrium between the phases, in which condensation onsets as soon as the saturation line is closed. Before the condensation onset, the stagnation properties echo those at the inflow. However, beyond the condensation onset, the transfer of latent heat toward the vapor portion of the two-phase mixture rises its stagnation temperature. To evaluate this rise in the vapor portion stagnation temperature, a non dimensional parameter ζ is defined. Comparison for low- and high-pressure cases between the present analytical solution and the published experimental values in the literature show very good agreement.

scholarly journals Research and application of supramolecular gel plugging agent in abnormal pressure reservoir

2021 ◽  
Vol 2045 (1) ◽  
pp. 012006
Author(s):  
B Baletabieke ◽  
Y X Gu ◽  
T Zhou ◽  
D X Duan ◽  
J T Liu ◽  
...  
Keyword(s):  
High Pressure ◽  
Oil And Gas ◽  
Adhesion Force ◽  
Fiber Composite ◽  
Low Pressure ◽  
Effective Rate ◽  
Pressure Zone ◽  
Composite Gel ◽  
Pressure Area ◽  
Strong Adhesion

Abstract The Aktobe project is the largest oil and gas producing area of PetroChina in Central Asia. However, after years of exploitation, the pressure of the reservoir has dropped, making it difficult to increase the production of a single well. Both the Kenkyak block and North Troyes block of the project have induced fractured leakage, and frequent leakage affects safe and efficient drilling and completion operations and production. Therefore, the research on leakage prevention and control technology is very necessary. This article focuses on the characteristics of the cracks in the high-pressure area of the Kenkyak block and the cracks in the low-pressure area of the North Troyes block. Aiming at the fracture characteristics of the high-pressure zone in the Kenkyak block and the low-pressure zone in North Troyes block, and taking advantage of the synergistic effect of supramolecules, a supramolecular plugging-while-drilling agent was developed based on the deformable fiber composite gel. It forms a strong adhesion plugging layer on the inner wall of the leakage channel through the strong adhesion force, and it achieves a good plugging effect. The 300-500mD sand disc bearing pressure could reach 700psi when adding 3% agent, and the bearing pressure of 3-5D permeability sand disc could reach above 450psi. A supramolecular static plugging agent was also developed based on the dilatant gel. It is rich in strong shear reversible gel with supramolecular structure, which guarantees its pumpability and plugging performance. The effective rate of one-time plugging is over 80%, and the viscosity is greatly reduced after the gel is broken for 72hr, which benefits the reservoir protection.

Two-Phase Oil and Gas Separation

2008 ◽  
pp. 150-243 ◽  
Author(s):  
Ken Arnold ◽  
Maurice Stewart
Keyword(s):  
Gas Separation ◽  
Oil And Gas ◽  
Two Phase

scholarly journals Priorities of innovative activity of Orenburg region's subsoil users

2020 ◽  
Vol 177 ◽  
pp. 05017
Author(s):  
Anna Novikova ◽  
Olga Eremenko ◽  
Irina Vashuk
Keyword(s):  
Oil And Gas ◽  
New Technologies ◽  
Raw Materials ◽  
Gas Production ◽  
Operating Costs ◽  
Resource Saving ◽  
Oil And Gas Production ◽  
Process Plant ◽  
Efficiency Indicators ◽  
Solar Batteries

.Instability of the global energy market and internal problems of operation of the mature Orenburg oil and gas condensate field have led to the need for innovation. The relevance of new technologies is explained by the fact that since 1967, the development of the field has been complicated by the aggressiveness of the extracted hydrogen sulfide gas and the activity of water manifestations. The lack of effective technologies has led to a deterioration in the conditions of field preparation of raw materials, a drop in reservoir pressure and flow rate of wells, and an increase in their water content. As a result, oil and gas production and environmental and economic efficiency indicators are rapidly declining. In this regard, priorities have been set for technological improvement of subsurface use: 1) reduction of operating costs through the introduction of resource-saving and energy-efficient technologies; 2) application of environmental innovations in order to reduce the man-made impact on the environment. This paper presents measures aimed at solving the identified problems: re-equipment of oil wells with an automated plunger-lift on solar batteries without reconstruction of fountain fittings; arrangement of a system for utilization of gases degassing of sulfur on the Claus process plant;etc.

scholarly journals SUBSTANTIATION OF THE CONSTRUCTIVE-TECHNOLOGICAL SCHEME OF THE CAVITATION DISPERSATOR-HOMOGENIZER OF AGRICULTURAL RAW MATERIALS OF PLANT ORIGIN FOR FODDER PURPOSES

2020 ◽  
pp. 5-15
Author(s):  
Yelchin Aliyev ◽  
Svitlana Mykolenko ◽  
Vitaliy Yaropud ◽  
Roman Malegin
Keyword(s):  
Numerical Simulation ◽  
Raw Materials ◽  
Technological Scheme ◽  
Constant Density ◽  
Plant Origin ◽  
Two Phase ◽  
Bulk Fluid ◽  
Gas Phases ◽  
The Moment ◽  
Working Bodies

n urgent task is to increase the efficiency of preparation of high-quality feed through the use of technological processes of dispersion and homogenization with cavitation processing of feed components. The aim of the research is to substantiate the constructive-technological scheme of cavitation dispersant-homogenizer of agricultural raw materials of plant origin for feed purposes. As a result of research, the design of the working bodies (rotor and stator) of the cavitation dispersant-homogenizer was proposed and justified. Structurally, stator resonators and rotor confusers at the moment of their comparison form blades, the curvature of which repeats the curvature of the impeller of a centrifugal pump. To verify the operation of the proposed working bodies of the cavitation dispersant-homogenizer, numerical simulation was performed using the Star CCM + software package. Modeling was carried out using the model of multiphase interaction, Eulerian multiphase, volumetric fluid method (VOF). The phase motion obeys the k-ε turbulence model. At the first, the approximate mixture was presented as a two-phase liquid-gas medium, while the gas is the gaseous phase of the liquid. The thermodynamic state of the mixture was allowed as a resolving multiphase temperature. It was assumed that the liquid in the process of movement had a constant density, and the gas was ideal. The interaction between the liquid-gas phases obeyed the VOF-VOF bulk fluid and Schnerr-Sauer cavitation models. As a result of numerical simulation of the cavitation dispersion process on the developed design, its effectiveness is proved as a pump for pumping liquids with components of the feed mixture, as well as a grinder using a hydro-shock, which is formed as a result of cavitation in the stator resonators and rotor confusers.

scholarly journals POSSIBILITY OF VORTEX SEPARATION EJECTOR APPLICATION IN THE COLLECTION AND SEPARATION OF GAS

2020 ◽  
Vol 5 (443) ◽  
pp. 150-155
Author(s):  
Novruzova Sudaba, ◽  
◽  
Qadashova Elmira, ◽  
◽  
◽  
...  
Keyword(s):  
Low Temperature ◽  
Gas Separation ◽  
Low Pressure ◽  
Significant Loss ◽  
Gas Flows ◽  
Offshore Platforms ◽  
Two Phase ◽  
Separation Processes ◽  
Wellhead Pressure ◽  
Flow Energy

The article analyzes the experimental and pilot ejector installations and shows shortcomings in their work with two-phase flows. Association of high and low pressure gas flows with a conventional choke device leads to a significant loss of flow energy of high pressure gas. This union of gas flows of high and low pressures, also limits the selection of gas from wells with low wellhead pressure and the combined gas stream in this case becomes a low-pressure, so transporting it over long distances becomes impossible. Thus, new design of the vortex and separation ejector for the improvement of technological processes is proposed. Its design and principle of operation are described. The proposed ejector consists of a feed chamber with a tangential inlet of the passive flow, and a tangential exit of the liquid phase, mixing chamber and diffuser. The possibility of implementing it at the same time in the ejection and low-temperature gas separation processes were considered. The advantages of the ejector are shown. Due to the cold created by very low temperature in the proposed vortex ejector it is possible to carry out the process of static low-temperature gas separation simultaneously with the process of ejection. The use of this small-sized ejector instead of compressor installations on limited areas of offshore platforms, bushes and flyovers is especially expedient and advantageous. The vortex ejector is simple in design and can be made out of the factory by forces of the manufacturers themselves from tube elements.

Numerical Simulation of Labyrinth Oil and Gas Separator in Vehicle Engine

2017 ◽  
Vol 9 (4) ◽  
Author(s):  
Z. Xinjie
Keyword(s):  
Numerical Simulation ◽  
Oil And Gas ◽  
Separation Efficiency ◽  
Simple Algorithm ◽  
Internal Flow ◽  
Simulation Method ◽  
Two Phase ◽  
Vehicle Engine ◽  
Development Cycle ◽  
Gas Separator

The working process of oil and gas separator is a very complex gas-liquid two-phase separation movement; it is difficult to obtain internal flow condition using analytical method. In this paper, with DPM, SIMPLE algorithm and random walk model, velocity distribution, pressure distribution, oil droplets motion trajectory and separation efficiency were analyzed by numerical simulation method. This analysis is helpful to understand flow law of gas-liquid two-phase fluid in oil and gas separator，and then optimize separator structure, short its development cycle, which has important application value in engineering.

Fouling Is the Beginning: Upcycling Biopolymer-Fouled Substrates for Fabricating High-Permeance Thin-Film Composite Polyamide Membranes

2020 ◽  
Author(s):  
Ruobin Dai ◽  
Hongyi Han ◽  
Tianlin Wang ◽  
Jiayi Li ◽  
Chuyang Y. Tang ◽  
...  
Keyword(s):  
Thin Film ◽  
High Pressure ◽  
End Of Life ◽  
Water Purification ◽  
Low Pressure ◽  
Polymeric Membranes ◽  
Membrane Recycling ◽  
Film Composite ◽  
Thin Film Composite ◽  
First Time

Commercial polymeric membranes are generally recognized to have low sustainability as membranes need to be replaced and abandoned after reaching the end of their life. At present, only techniques for downcycling end-of-life high-pressure membranes are available. For the first time, this study paves the way for upcycling fouled/end-of-life low-pressure membranes to fabricate new high-pressure membranes for water purification, forming a closed eco-loop of membrane recycling with significantly improved sustainability.

Applied Process Simulation-Driven Oil and Gas Separation Plant Optimization using Surrogate Modeling and Evolutionary Algorithms

2019 ◽  
Author(s):  
Anders Andreasen
Keyword(s):  
Evolutionary Algorithms ◽  
Gas Separation ◽  
Oil And Gas ◽  
Optimal Solution ◽  
Computer Experiment ◽  
Latin Hypercube Sampling ◽  
Surrogate Models ◽  
Inlet Temperature ◽  
Separation Plant ◽  
Separation Stage

In this article the optimization of a realistic oil and gas separation plant has been studied. Two different fluids are investigated and compared in terms of the optimization potential. Using Design of Computer Experiment (DACE) via Latin Hypercube Sampling (LHS) and rigorous process simulations, surrogate models using Kriging have been established for selected model responses. The surrogate models are used in combination with a variety of different evolutionary algorithms for optimizing the operating profit, mainly by maximizing the recoverable oil production. A total of 10 variables representing pressure and temperature various key places in the separation plant are optimized to maximize the operational profit. The optimization is bounded in the variables and a constraint function is included to ensure that the optimal solution allows export of oil with an RVP < 12 psia. The main finding is that, while a high pressure is preferred in the first separation stage, apparently a single optimal setting for the pressure in downstream separators does not appear to exist. In the second stage separator apparently two different, yet equally optimal, settings are revealed. In the third and final separation stage a correlation between the separator pressure and the applied inlet temperature exists, where different combinations of pressure and temperature yields equally optimal results.<br>

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