Development of Vertical Three-Phase Separators of Gas–Liquid–Sludge Mixtures for Oil and Gas Plants

2013 ◽  
Vol 49 (3-4) ◽  
pp. 220-228 ◽  
Author(s):  
L. M. Mil’shtein
Keyword(s):  
Oil And Gas ◽  
Three Phase ◽  
Gas Plants

A Framework to Support the Optimization of Modularized Oil and Gas Structures

2018 ◽  
Author(s):  
Vincenzo Castorani ◽  
Paolo Cicconi ◽  
Michele Germani ◽  
Sergio Bondi ◽  
Maria Grazia Marronaro ◽  
...  
Keyword(s):  
Lead Time ◽  
Oil And Gas ◽  
Steel Structure ◽  
Steel Structures ◽  
Modular System ◽  
Test Case ◽  
Plant Design ◽  
Conceptual Study ◽  
A Current ◽  
Gas Plants

Modularization is a current issue in the context of plant design. A modular system aims to reduce lead time and cost in design phases. An oil & gas plant consists of many Engineered-To-Order solutions to be submitted and approved during the negotiation phase. In this context, design tools and methods are necessary to support the design life cycle from the conceptual study to the detailed project. The paper proposes an approach to optimize the design of modularized oil & gas plants with a focus on the related steel structures. A test case shows the configuration workflow applied to a modular steel structure of about 400 tons. The modularized layout has been optimized using genetic algorithms. A Knowledge Base has been described to support the configuration phase related to the conceptual design. Design rules and metrics have been formalized from the analysis of past solutions.

Three-Phase Flow Profile Determination of A Horizontal Well in Offshore by Tracer Technology

2021 ◽  
Author(s):  
Alexander Katashov ◽  
Igor Novikov ◽  
Evgeny Malyavko ◽  
Nadir Husein
Keyword(s):  
Oil And Gas ◽  
Horizontal Wells ◽  
Oil And Gas Industry ◽  
World Market ◽  
Dynamic Mode ◽  
Flow Profile ◽  
Offshore Platforms ◽  
Field Development ◽  
Coiled Tubing ◽  
Three Phase

Abstract Over the past few years, the oil and gas industry has faced a situation of high fluctuations in hydrocarbon prices on the world market. In addition, the trend for the depletion of traditional hydrocarbon reservoirs and the search for new effective solutions for the management and control of field development using horizontal and multilateral wells is still relevant. The most common method for horizontal wells testing is production logging tools (PLT) on coiled tubing (CT) or downhole tractor, which is associated with HSE risks and high cost, especially on offshore platforms, which limits the widespread use of this technology. The solution without such risks is the method of marker well monitoring, which allows obtaining information about the profile and composition of the inflow in a dynamic mode in horizontal wells without well intervention. There are several types of tracer (marker) carriers and today we will consider an approach to placing marker monitoring systems as part of a completion for three-phase oil, water and gas monitoring.

scholarly journals A Data Size Reduction Approach Applicable in Process Control System of Oil and Gas Plants

2020 ◽  
Vol 12 (2) ◽  
pp. 639
Author(s):  
Reza Abbasinejad ◽  
Farzad Hourfar ◽  
Chandra Mouli R Madhuranthakam ◽  
Ali Elkamel
Keyword(s):  
Oil And Gas ◽  
Process Control System ◽  
Monitoring Systems ◽  
Process Variables ◽  
Performance Quality ◽  
Mathematical Techniques ◽  
And Performance ◽  
The Cost ◽  
And Storage ◽  
Gas Plants

In oil and gas plants, the cost of devices applicable for supervising and controlling systems directly depends on the transmission and storage systems, which are related to the data size of process variables. In this paper, process variables frequency-domain and statistical analysis results have been studied to infer if there exists any possibility to reduce data size of the process variables without loss of any necessary information. Although automatic control is not applicable in a shutdown condition, for generalization of the obtained results, unscheduled shutdown data has also been analyzed and studied. The main goal of this paper is to develop an applicable algorithm for oil and gas plants to decrease the data size in controlling and monitoring systems, based on well-known and powerful mathematical techniques. The results show that it is possible to reduce the size of data dramatically (more than 99% for controlling, and more than 55% for monitoring purposes in comparison with existing methods), without loss of vital information and performance quality.

Developing Turnaround Maintenance (TAM) Model to Optimize TAM Performance Based on the Critical Static Equipment (CSE) of GAS Plants

2019 ◽  
Vol 01 (01) ◽  
pp. 12-31
Author(s):  
Abdelnaser Elwerfalli ◽  
M. Khurshid Khan ◽  
J. Eduardo Munive-Hernandez
Keyword(s):  
Oil And Gas ◽  
Reliability Function ◽  
Operating Conditions ◽  
Normal Operation ◽  
Tam Model ◽  
Third Stage ◽  
Inspection And Maintenance ◽  
Oil And Gas Companies ◽  
A Company ◽  
Gas Plants

Many oil and gas companies have suffered major production losses, and higher cost of maintenance due to the total shutdown of their plants to conduct TAM event during a certain period and according to scope of work. Therefore, TAM is considered the biggest maintenance activity in oil and gas plant in terms of manpower, material, time and cost. These plants usually undergo other maintenance strategies during normal operation of plants such as preventive, corrective and predictive maintenance. However, some components or units cannot be inspected or maintained during normal operation of plant unless plant facilities are a totally shut downed due to operating risks. These risks differ from a company to another due to many factors such as fluctuated temperatures and pressures, corrosion, erosion, cracks and fatigue caused by operating conditions, geographical conditions and economic aspects. The aim of this paper is to develop a TAM model to optimize the TAM scheduling associated with decreasing duration and increasing interval of the TAM of the gas plant. The methodology that this paper presents has three stages based on the critical and non-critical pieces of equipment. At the first stage, identifying and removing Non-critical Equipment pieces (NEs) from TAM activity to proactive maintenance types. During the second stage, the higher risk of each selected equipment is assessed in order to prioritize critical pieces of equipment based on Risk Based Inspection (RBI). At the third stage, failure probability and reliability function for those selected critical pieces of equipment are assessed. The results of development of the TAM model is led to the real optimization of TAM scheduling of gas plants that operated continuously around the clock in order to achieve a desired performance of reliability and availability of the gas plant, and reduce cost of TAM resulting from the production shutdown and cost of inspection and maintenance.

scholarly journals Estimation of Shutdown Schedule to Remove Fouling Layers of Heat Exchangers Using Risk-Based Inspection (RBI)

Processes ◽  
2021 ◽  
Vol 9 (12) ◽  
pp. 2177
Author(s):  
Abdelnaser Elwerfalli ◽  
Salih Alsadaie ◽  
Iqbal M. Mujtaba
Keyword(s):  
Heat Exchanger ◽  
Heat Exchangers ◽  
Oil And Gas ◽  
Waste Heat ◽  
Complex Phenomenon ◽  
Cleaning Process ◽  
Chemical Substances ◽  
Operation Period ◽  
The Heat Transfer Coefficient ◽  
Gas Plants

Oil and Gas plants consist of a set of heat exchangers, which are used in recovering the waste heat from product streams to preheat the oil. The heat transfer coefficient of exchangers declines considerably during the operation period due to fouling. Fouling in heat exchangers is a complex phenomenon due to the acceleration of many layers of chemical substances across tubes of heat exchangers resulting from chemical reactions and surface roughness. In this paper, the fouling process was determined as a critical failure in the heat exchanger. Failure is an accelerated fouling layer across the heat exchanger tubes, which can be the reason for the clogging of tubes. Hence, a risk assessment was conducted using the Risk-Based Inspection (RBI) approach to estimate the probability of fouling in heat exchangers. The results showed that the RBI approach can be used successfully to predict the suitable time to shut down the plant and conduct the fouling cleaning process.

scholarly journals PROJECT PERFORMANCE AND MONITORING OF A REVETMENT, COCOS BAY, EAST TRINIDAD

2012 ◽  
Vol 1 (33) ◽  
pp. 38
Author(s):  
Charmaine O'Brien-Delpesh ◽  
Candice Gray-Bernard ◽  
Marisha Tang-Kai
Keyword(s):  
Structural Integrity ◽  
Oil And Gas ◽  
Wave Climate ◽  
Winter Period ◽  
Coastal Evolution ◽  
Suitable Material ◽  
The North ◽  
Three Phase ◽  
Severe Erosion ◽  
Actual Response

The eastern shoreline of Trinidad has been suffering extensively from erosion over the years. This coast is exposed to the Atlantic Ocean and is subjected to large swells especially during the North Atlantic winter period, storms and hurricanes. The coastal area of Cocos Bay located on the east coast of Trinidad between the Nariva and Ortoire Rivers has been undergoing severe erosion at a rate of approximately 0.5 m to 1.7 m per year. In 2005, the Ministry of Works and Transport, Drainage Division started the construction of a 2.3 km long rubble revetment (rip rap) which was completed in 2008. The function of the revetment was to control erosion and flooding thereby protecting the Manzanilla-Mayaro Road which is a major artery linking the oil and gas sector as well as several coastal villages. This revetment formed the emergency intervention phase of a three phase solution recommended along the South Cocos Bay. Conforming to the Certificate of Environmental Clearance (CEC), the Ministry of Works and Transport, Drainage Division has been monitoring the possible impacts of the structure on the beach environment from post construction to present and its structural integrity. During the last five years, the monitoring study has revealed that in the vicinity of the revetment, erosion and flooding have been mitigated; however there has been narrowing of the beach even though the gradient has remained the same. Flanking has also been observed immediately north and south of the revetment. In regards to the structural integrity of the revetment, the armour layer which was constructed using local rock (blue limestone), 200 - 300 kg is showing signs of weathering and shearing. This has resulted in voids in the armour layer which has exposed the filter and underlayers. It is recommended that in order to maintain the functionality and structural integrity over a design life of 25 years, the armour layer be repaired with a suitable material which has historically been sourced externally. The post documents the prevailing wave climate, previous coastal evolution modelling, and the pre and post construction profile records. The shoreline response to the revetment is predicted using GENESIS and compared to the actual response based on an analysis of the beach profile monitoring records are also presented.

Influence of Wettability on Residual Gas Trapping and Enhanced Oil Recovery in Three-Phase Flow: A Pore-Scale Analysis by Use of Microcomputed Tomography

SPE Journal ◽  
2016 ◽  
Vol 21 (06) ◽  
pp. 1916-1929 ◽  
Author(s):  
Stefan Iglauer ◽  
Taufiq Rahman ◽  
Mohammad Sarmadivaleh ◽  
Adnan Al-Hinai ◽  
Martin A. Fernø ◽  
...  
Keyword(s):  
Power Law ◽  
Oil Recovery ◽  
Oil And Gas ◽  
Microcomputed Tomography ◽  
Rock Surface ◽  
Phase Flow ◽  
Pore Scale ◽  
Three Phase ◽  
Three Phase Flow ◽  
Capillary Pressures

Summary We imaged an intermediate-wet sandstone in three dimensions at high resolution (1–3.4 µm3) with X-ray microcomputed tomography (micro-CT) at various saturation states. Initially the core was at connate-water saturation and contained a large amount of oil (94%), which was produced by a waterflood [recovery factor Rf = 52% of original oil in place (OOIP)] or a direct gas flood (Rf = 66% of OOIP). Subsequent waterflooding and/or gasflooding (water-alternating-gas process) resulted in significant incremental-oil recovery (Rf = 71% of OOIP), whereas a substantial amount of gas could be stored (approximately 50%)—significantly more than in an analog water-wet plug. The oil- and gas-cluster-size distributions were measured and followed a power-law correlation N ∝ V−τ , where N is the frequency with which clusters of volume V are counted, and with decays exponents τ between 0.7 and 1.7. Furthermore, the cluster volume V plotted against cluster surface area A also correlated with a power-law correlation A ∝ Vp, and p was always ≈ 0.75. The measured τ- and p-values are significantly smaller than predicted by percolation theory, which predicts p ≈ 1 and τ = 2.189; this raises increasing doubts regarding the applicability of simple percolation models. In addition, we measured curvatures and capillary pressures of the oil and gas bubbles in situ, and analyzed the detailed pore-scale fluid configurations. The complex variations in fluid curvatures, capillary pressures, and the fluid/fluid or fluid/fluid/fluid pore-scale configurations (exact spatial locations also in relation to each other and the rock surface) are the origin of the well-known complexity of three-phase flow through rock.

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