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Qatar
There are different definitions of what is Well Integrity. The most widely accepted definition is given by NORSOK D-010: "Application of technical, operational and organizational solutions to reduce risk of uncontrolled release of formation fluids throughout the life cycle of a well."[1] Other accepted definition is given by ISO TS 16530-2 "Containment and the prevention of the escape of fluids (i.e. Well Integrity is a multidisciplinary approach. Therefore, well integrity engineers need to interact constantly with different disciplines to assess the status of well barriers and well barrier envelopes at all times.
- North America > United States (0.68)
- Asia > Middle East > Qatar (0.28)
- Well Drilling > Wellbore Design > Wellbore integrity (1.00)
- Well Completion > Well Integrity (1.00)
- Health, Safety, Environment & Sustainability > Safety > Operational safety (1.00)
- Information Technology > Knowledge Management (0.40)
- Information Technology > Communications > Collaboration (0.40)
QatarEnergy has green-lit its new North Field West expansion project as it pursues its quest to nearly double the country's LNG production capacity by decade's end to 142 mpta, an almost 85% increase over current capacity. Saad Sherida Al-Kaabi, the Minister of State for Energy Affairs and president and CEO of QatarEnergy, announced the decision at a 25 February press conference at QatarEnergy's headquarters in Doha and said basic engineering works will proceed to ensure that the project's approved schedule is met. Extensive appraisal drilling and testing has confirmed that the productive layers of Qatar's giant North Field extend towards the west, opening the door to a new LNG production project in Ras Laffan, Al-Kaabi said. Additional gas volumes in the western part of North Field are estimated at 240 Tcf, thus raising Qatar's overall estimated gas reserves to more than 2,000 Tcf from the current 1,760 Tcf. He added that the area has enough condensate to boost those reserves to 80 billion bbl from the current 70 billion bbl; the area also possesses large quantities of liquefied petroleum gas, ethane, and helium.
- North America > United States (1.00)
- Asia > Middle East > Qatar > Arabian Gulf (1.00)
- Asia > Middle East > Qatar > Ad-Dawhah > Doha (0.26)
QatarEnergy has announced the award of four main engineering, procurement, construction, and installation (EPCI) contract packages related to the next development phase of the offshore Al-Shaheen field. The new work at Qatar's largest oil field is designed to increase production by about 100,000 B/D of oil. The awards are part of Project Ru'ya, which is the third phase of Al-Shaheen's development since North Oil Company, a joint venture between QatarEnergy (70%) and TotalEnergies (30%), took over the field's operation in July 2017. The project, which will develop more than 550 million bbl of oil, will be executed over a 5-year period with first oil expected in 2027. The project includes the drilling of more than 200 wells and the installation of a new centralized process complex, nine remote wellhead platforms, and associated pipelines.
Heavy equipment specialist Huisman has been awarded a contract for the upgrade of the offshore mast crane on board Heerema's heavy-lift vessel Aegir. The project will increase the second main hoist capacity from 2000 to 3200 metric tons (mt) at a height of 110 m, making the upgrade suitable for the installation of large jacket foundations. The upgraded crane for one of the world's largest monohull crane vessels will feature a fixed jib section and a 3200 mt lower block and hook., "We are honored to once again collaborate with Heerema on this milestone upgrade for the Aegir vessel," said David Roodenburg, chief executive of Huisman. "This project reaffirms our commitment to delivering cutting-edge solutions to our clients, making their operations more efficient, and strengthening them in their current and future business." The vessel was originally equipped with a 4000-mt offshore mast crane by Huisman in 2013.
Raffie Hosein was former head of the Department of Chemical Engineering at the University of the West Indies (UWI) in Trinidad and Tobago. He is coordinator of the MSc Reservoir Engineering Program and professor of petroleum engineering at UWI. Previously he worked as a petroleum engineer with the Ministry of Energy and Energy Industries in Trinidad, as a senior associate professor in the Department of Petroleum Engineering at Texas A&M University in Qatar and as a consultant for Schlumberger NExT training School. He received his BSc, M.Phil, and PhD degrees in petroleum engineering from UWI. His current area of research is CCUS. He is a registered CEng MEI Chartered Petroleum Engineer with the Energy Institute of London and a Fellow with the Institute of Materials Minerals and Mining also of London.
- North America > United States > Texas (0.31)
- North America > Trinidad and Tobago (0.31)
- Asia > Middle East > Qatar (0.31)
Pressure Transient Analysis for Water Injection Wells with Waterflooding-Induced Nonsimultaneously Closed Multistorage Fractures: Semianalytical Model and Case Study
Wang, Zhipeng (State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum (Beijing)) | Ning, Zhengfu (State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum (Beijing) (Corresponding author)) | Guo, Wenting (State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum (Beijing)) | Lu, Weinan (China Petroleum Engineering Construction Corporation) | Lyu, Fangtao (State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum (Beijing)) | Liu, Gen (Beijing Institute of Technology)
Summary Waterflooding will induce the opening and extension of fractures, which will create some water flow channels. Due to fracture multiclosures, the obtained fracture half-length from conventional finite-conductivity models is less than the actual value, leading to water flow channels that have been formed but not detected by engineers. According to a large number of waterflooding-front matching schematics and interwell connection coefficient analyses, we find that waterflooding usually connects natural fractures to form bi-induced fractures, which will close nonsimultaneously during the falloff test. In this paper, we develop a waterflooding-induced nonsimultaneously closed multistorage fracture model (WNMF) to describe waterflooding-induced fracture characteristics accurately. The bi-induced fractures are separated into multiple segments to calculate their pressure response. The closed induced-fracture conductivities are constant, and the opened induced-fracture conductivities follow the exponential equation measured by the experiments. Induced-fracture interference and multistorage effects are considered. Finally, the Duhamel principle is used to characterize the storage effects of bi-induced fractures and the wellbore. Results show that the type curve of the WNMF model has bi-peaks on the pressure derivative curve, which was regarded as error data in the past. Closed induced-fracture half-length is identified quantitatively. We can obtain an induced-fracture angle by matching the interference flow (an innovative flow regime in this paper), which can guide engineers to prevent and monitor water breakthrough in time. Using the obtained parameters (induced-fracture angle and closed induced-fracture half-length) can guide well pattern encryption and reasonable well location determination. If the induced-fracture angle is 90°, an additional horizontal line will be shown on the pressure derivative curve. When the horizontal line is misidentified as a quasiradial flow regime, the obtained reservoir permeability will be amplified many times. The multistorage coefficient is obtained to correct the magnified storage coefficient. Equation calculation and model matching methods verify each other to improve closed induced-fracture half-length accuracy. In conclusion, the experiment and mathematical model methods work together to describe the pressure response behavior of water injection wells. The WNMF model is compared with the conventional finite-conductivity model to verify its accuracy. A field case demonstrates its practicality.
- Europe (1.00)
- Asia > China (0.68)
- North America > United States > Texas (0.28)
- (2 more...)
- Energy > Oil & Gas > Upstream (1.00)
- Water & Waste Management > Water Management > Lifecycle > Disposal/Injection (0.61)
- Europe > United Kingdom > North Sea > Central North Sea > Central Graben > Block 23/27 > op (0.99)
- Europe > United Kingdom > North Sea > Central North Sea > Central Graben > Block 23/22a > op (0.99)
- Asia > China > Shanxi > Ordos Basin > Changqing Field (0.99)
- (4 more...)
- Information Technology > Data Science (0.46)
- Information Technology > Modeling & Simulation (0.34)
The Labor Dimension of the Oil and Gas Industry in the Gulf: Role of Migrant and Expatriate Labor Force
Retnanto, Albertus (Texas A&M University at Qatar) | Mohsin, Anto (Northwestern University in Qatar) | Aloudeh, Zaina (Texas A&M University at Qatar) | Kazim, Tayyibah (Northwestern University in Qatar)
Abstract This paper highlights the role of the migrant and expatriate labor force and their contributions to the oil and gas industry in the Gulf. It would be instructive to acknowledge and learn from the working experiences and challenges faced by these migrant workers. Their backgrounds, skills, knowledge, and technical and managerial know-how have helped develop the oil and gas industry and, to a large extent, the economic development of the Gulf. Understanding their roles and contributions would serve at least two things. First, to appreciate the important part they took in the development of the Gulf oil and gas industry and hence to ensure the protection of their rights under local laws. Second, to tell a complete story of the Gulf's oil and gas industry and the country's development. In addition, multiple themes were examined, such as the challenges and rewards of working in the oil and gas industry in the Gulf, sustainability, and the work environment. The main method used to acquire information regarding the labor dimension in the oil and gas industry in the Gulf was through semi-structured interviews. The interviewees were selected through a sampling technique known as snowball sampling. The interviews were then audio and video recorded with the interviewee's permission. After that, the interviews were transcribed and analyzed using a corpora analysis software, Lancsbox. The various themes were identified and used to write this research paper. Some themes identified are the interviewees’ narratives and reasons for choosing to work in Gulf's oil and gas industry, their workplace challenges, their mentorship experiences, and their advice for young aspirant engineers. They also discussed and compared their professional and personal experiences in Gulf to other places they have worked. Knowing what they do and how they contribute would be beneficial for at least two reasons. First, to recognize the crucial part they play in the growth of the Gulf's oil and gas sector and, as a result, to ensure that their rights are protected by local legislation. Second, to provide a more thorough account of the country's gas and oil sector development. Many international workers find satisfaction in the privileges and comfort their jobs, their host nation, and its thriving oil and gas industry offer them. They are drawn to the nation's multiculturalism, language, opportunities, and safety and want to keep giving back. That, however, does not come without the special difficulties highlighted in this research.
- North America (0.94)
- Asia > Middle East > Qatar (0.62)
In-Reservoir Mixing Dynamics Over Geologic Time of Separate Gas and Oil Charges in Well-Connected Reservoirs
Mohamed, Tarek S. (University of Texas at Austin) | Kristensen, Morten (SLB) | Pan, Shu (SLB) | Wang, Kang (SLB) | Betancourt, Soraya S. (SLB) | Torres-Verdín, Carlos (University of Texas at Austin) | Mullins, Oliver C. (SLB)
Abstract Many reservoirs experience separate gas and oil charges that can lead to a variety of different outcomes of fluid type and distribution. There has been fundamental uncertainty even as to which charge fluid can arrive first, let alone what fluid dynamic processes can result over geologic time. For high-pressure basins such as the Gulf of Mexico, this mixture can lead to increased solution gas, large GOR gradients and sometimes cause formation of viscous oil and tar at the oil-water contact, impacting aquifer support. In some reservoirs, the present-day outcome of oil and gas mixing over geologic time is clearly established by detailed chemical evaluation of reservoir fluids from many reservoir locations. Our objective is to understand the dynamics of the gas and oil mixing processes. Chemical measurements show that the extent of mixing includes thermodynamic equilibration in young reservoirs by 1) FHZ equation of state (EoS) asphaltene gradients and cubic EoS modeling of solution gas for reservoir fluids, 2) analysis of liquid-phase geochemical biomarkers, and 3) methane carbon isotope analysis. Specifically, in the common charge of primary biogenic gas and oil into reservoirs, methane isotope analysis is unequivocal. We employ reservoir simulation of a point gas charge into oil with various geometries and charge rates to establish parametric conditions which lead to excellent mixing vs those conditions that lead to large, disequilibrium gradients. The roles of compositional diffusion vs. momentum diffusion induced by forced convection are explored both in simulation and overall fluid mechanics analysis, which helps both to validate the results and extend the range of applicable parameters. Modeling results and simple fluid mechanics estimates also establish that there is no possibility that these reservoirs could have a gas charge followed by an oil charge; in the selected reservoirs, oil must have arrived first, followed by a biogenic gas charge. Seismic images of gas chimneys offer guidance regarding how the latter process can take place. Second, modeling results clearly establish a surprisingly wide range of charge conditions that can lead to excellent mixing and equilibration even for a point gas charge. Modeling results also show that for a very fast charge, results are consistent with those expected for CO2 injection and sequestration. The evaluation of geodynamic processes of separate biogenic gas and oil charges into reservoirs has rarely been accomplished. Even the result that biogenic gas charge must occur after oil charge challenges widely-held conventional thinking. In addition, the rapid and thorough mixing (less than 2 million years) of gas and oil charges is unexpected yet readily reproduced by reservoir simulation. The ability to connect CO2 sequestration to a wide range of reservoir studies is a novel way to constrain CCS modeling.
- Europe (1.00)
- North America > United States > Texas (0.28)
- Asia > Middle East > Qatar (0.28)
- Asia > Middle East > UAE > Abu Dhabi Emirate > Abu Dhabi (0.19)
- Geology > Rock Type > Sedimentary Rock (0.97)
- Geology > Geological Subdiscipline > Economic Geology > Petroleum Geology (0.90)
- Geology > Geological Subdiscipline > Geochemistry (0.88)
- Europe > Norway > North Sea > Central North Sea > Central Graben > PL 018 > Chalk Formation (0.99)
- Asia > Middle East > Turkey > Selmo Field (0.99)
- Asia > Middle East > Qatar > Arabian Gulf > Rub' al Khali Basin > Al Shaheen Field > Shuaiba Formation (0.99)
- (10 more...)
The aim of the course is to recap main techniques required to build an integrated reservoir model and to explain different potential workflows for field development and/or history matching processes. This course will include explanations of upscaling techniques and the use of proxies for uncertainty assessment of production forecasts. All these methods will be illustrated and applied to the Brugge case. Understand the fundamentals of Geostatistics and Spatial Modeling Calculate a variogram Know what are the principal of Kriging Know the main methods of Geostatistical Simulations for modeling heterogeneous and fractured reservoirs Be familiar with the main Upscaling techniques used in reservoir simulators Know how to use proxy models for assessing Uncertainty in Production Forecasts Application to the Brugge field will be given to illustrate the methodology. The course is primarily addressed to reservoir geologists and reservoir engineers involved in building reservoir models but could also be of interest to production engineers who have to deal with the consequences of uncertainty in reservoir performance.
- Energy > Oil & Gas > Upstream (1.00)
- Government > Regional Government > Asia Government > Middle East Government (0.32)
Abstract The fast pace of exploration and production level increase over recent years has led operators to expand the horizon for exploration of hydrocarbons in more complex and exigent reservoirs which includes the high temperature and pressure (HTHP) reservoirs. Typically wells in the North of Vietnam have been drilled using a Non-Aqueous Drilling Fluid (NAF) for their lower and reservoir intervals. The challenges of multi-string design, potential of acid gas contamination, well bore stability, down hole losses and a high temperature environment require a well-engineered NAF to meet the overall well objectives. Alternatively, Water-Based Fluid (WBM) has significant environmental benefits compared to NAF. This paper presents the technical development, evolution and lessons learned from using a high performance HTHP WBM over a series of extremely challenging HPHT exploration wells Offshore Vietnam, with temperatures expected to reach 170°C (338°F) and pressures over 12,000 psi. These conditions place severe limitations on the drilling fluid design and can often lead to failures in open-hole wireline logging operations, which is probably the most important objective in an exploration well. To ensure the successful drilling, wireline logging and completion operations under the thermal conditions, the development of the HPHT WBM for these exploration wells needs to address the HTHP filtration control properties, filter cake quality, inhibition and the thermal stability of the drilling fluid. Extensive laboratory testing was performed to optimize the rheological properties for mud weights up to 18.7 ppg to ensure minimal sag tendency after static condition, while also providing excellent filter cake quality, system inhibition and hole condition to allow the well to be fully logged and evaluated. The enhancements made in the HPHT WBM design led to an improved drilling performance in drilling these challenging exploration wells. Inhibition of the reactive formations was improved with each well drilled, as was the rate of penetration and wellbore stability. Extensive logging was performed with the wellbore remaining in excellent condition throughout the long open-hole time.
- North America > United States (0.93)
- Asia > Vietnam (0.91)
- Asia > Middle East > Qatar (0.28)
- Asia > Vietnam > South China Sea > Nam Con Son Basin > Block 05/2 > Hai Thach Field (0.99)
- Asia > Middle East > Qatar > Arabian Gulf > Rub' al Khali Basin > North Field (0.99)
- Well Drilling > Drilling Fluids and Materials > Drilling fluid selection and formulation (chemistry, properties) (1.00)
- Reservoir Description and Dynamics > Unconventional and Complex Reservoirs > HP/HT reservoirs (1.00)
- Reservoir Description and Dynamics > Formation Evaluation & Management > Open hole/cased hole log analysis (1.00)