Automated Selection of Completion Interval Workflow Using Python Script for Probabilistic Range of EUR in a Greenfield Development

2021 ◽  
Author(s):  
Emeline Chong ◽  
Derric Shen Ong
Keyword(s):  
Industrial Revolution ◽  
Dynamic Models ◽  
Field Development ◽  
Python Script ◽  
Dynamic Simulator ◽  
Well Trajectory ◽  
Development Concept ◽  
S Curve ◽  
Development Evaluation ◽  
Selection Of

Abstract In the greenfield development process, one of the key questions that needs to be answered is, "What is the range of EUR for a particular development concept and the associated completion method based on the existing range of subsurface uncertainties?" The key challenge then is how can the team forecast a representative range of EUR efficiently to obtain a range of results that represent a probabilistic outcome. During the reservoir modelling process of this case study, a total of 405 static realizations had been run and then a STOIIP S-curve was generated. In the next step, 20 cases each of "High, Mid and Low" static models were selected based on the S-curve distribution for the next phase of dynamic simulation due to time and resources constraint. In terms of completion, the same development concept and completion method is assumed, where each dynamic case requires 8 horizontal producing wells with 200 metres of completion interval. Wells placement aside, each of the 60 dynamic models should not have the same fixed perforation depths and intervals due to the geological uncertainties with regards to facies distribution and they need to be selected based on the well effective k-h and hydrocarbon saturation along each well trajectory. Manual work could be used to analyse the best intervals for each of the planned wells, or in this case, this laborious process was replaced with an automated selection of the optimum completion interval workflow using Python script. This paper will show the workflow of how a scripted Python code is designed to provide an "automated moving window" to find the best intervals along a well trajectory. This workflow was executed in the pre-processor of the dynamic simulator which has a workflow window with Python-embedded capability. The Python code then generated the simulation keyword COMPDATMD, which contained the best perforation intervals for all the wells as an output. This automated workflow resulted in an optimization of the completion intervals in all the 60 dynamic model cases, while the ultimate recovery for this greenfield development in Peninsula Malaysia increased by 30% compared to EUR from previously "unoptimized runs". This approach is managed to cut down the run preparation time by at least two weeks compared to the manual solution. The improved range of EUR is also considered as a more representative outcome of the field development evaluation. Utilizing emerging technology breakthrough such as ability to customize specific features via a programming language is important towards a successful era of the Fourth Industrial Revolution (4IR). The results of this automated and customized workflow automation demonstrate a successful application of using machine learning for enhanced problem-solving in reservoir simulation.

The Path Selection of Low Carbon Building Development

2013 ◽  
Vol 409-410 ◽  
pp. 660-663
Author(s):  
Xiao Wei Wu
Keyword(s):  
Economic Transition ◽  
Path Selection ◽  
Scientific Development ◽  
Low Carbon ◽  
Paper Briefly ◽  
Low Carbon Economy ◽  
Development Concept ◽  
Realistic Choice ◽  
Selection Of ◽  
Carbon Economy

the development of low carbon building is not only the requirement of current economic transition,it is also the realistic choice to implement Scientific Development Concept and to build "two type society". This paper briefly describes the connotation of low carbon buildings , and then illustrates the low-carbon economy background, the necessity of low carbon building development, and finally put forward the corresponding path selection.

scholarly journals Collision Regulations

1962 ◽  
Vol 15 (4) ◽  
pp. 465-465
Author(s):  
O. W. Neumark
Keyword(s):  
Collision Avoidance ◽  
Late Stage ◽  
Horizontal Plane ◽  
Visual Experience ◽  
Lighting System ◽  
Near Misses ◽  
International Standard ◽  
Dynamic Simulator ◽  
Great Simplicity ◽  
Selection Of

Over a decade ago there was some controversy about the selection of an international standard airfield approach lighting system. At a very late stage, the R.A.E. produced a visual simulator of great simplicity on which any administrator could fly approaches using any of the rival systems. His performance could be checked but, what is far more important, he obtained personal and realistic visual experience. If this simulator had been available in 1945 it might have saved many millions spent on the flight evaluations of the rival systems and years of international conferences.In the present controversy on collision avoidance regulations in the air and at sea, time and wealth could be saved by the creation of a visual and dynamic simulator in which all persons attending symposiums on collision problems could obtain synthetic visual experience of the present day avoidance regulations and of the new conventions proposed by E. S. Calvert and S. H. Hollingdale.Curiously enough, such a simulator would not be very costly. It would consist of a very large hangar and a number of small electric two-seater cars somewhat similar to those known as ‘Dodgems’ often seen at Funfairs.It would be used quite effectively for simulating air traffic as a high percentage of all near-misses occur in the horizontal plane but it would be desirable to gimbal the cars so that they can bank when turning.Simulation of nocturnal traffic requires only black-out and navigation lights.

scholarly journals The Inspiration of European Countries’ Rural Value Orientation to China’s Rural Revitalization

2021 ◽  
Vol 3 (5) ◽  
pp. 205-210
Author(s):  
Yong-Sheng Xu
Keyword(s):  
Rural Areas ◽  
Industrial Revolution ◽  
Value Orientation ◽  
European Countries ◽  
Rural Revitalization ◽  
Urban Rural ◽  
Urbanization Rate ◽  
Rural Construction ◽  
Selection Of

The economy of European countries developed rapidly after the Western Industrial Revolution, and the rural areas of European countries also experienced long-term failure and depression. In the process of urbanization construction, the rural construction also faced many problems. In particular, after the urbanization rate exceeded 50%, European countries took targeted measures to revitalize rural areas in response to many problems in rural development, promoting the development process of urban-rural integration. Especially in Europe in the value orientation in the process of rural construction, there are many worth learning and using for reference of experience, in this paper, the European countries value index selection of rural construction, and implementation of rural construction scheme under this value orientation [1] research summary, draw lessons from the mature experience of the European countries rural construction, combined with China’s national conditions related to rural revitalization of advice are put forward.

scholarly journals A Theoretical Treatment of Memetic Traits Using Gene-Meme, Meme-Meme and Population Equilibrium

2021 ◽  
Author(s):  
Robert Shuler
Keyword(s):  
Industrial Revolution ◽  
Spreading Rate ◽  
Theoretical Treatment ◽  
Genetic Trait ◽  
Diverse Range ◽  
Transient Nature ◽  
Candidate Solution ◽  
Wide Group ◽  
Replication Factors ◽  
Selection Of

Background: Conceived as a unit of lasting cultural (mostly vertical) trait transmission, memes now include transient horizontally transmitted fads. Memes may sometimes follow the logic of population genetics, e.g. learned birdsong, but not always over the diverse range found in human hosts. Much current work focuses on selection of memes rather than hosts. Methods: We analyze equilibrium between gene-meme and meme-meme competing propagators and consider whether a meme is linked to reproduction (e.g. vertical culture transmission), or not. We employ a genetic component and combined meme induced fitness components for hosts, while memes have replication factors to distinguish from what’s good for the host (fitness). To anticipate future meme effects on population stability we use a Monte Carlo simulation roughly calibrated to the Industrial Revolution. Results: A basic effective calculus of memetic trait competition and interaction with genes is derived and analyzed. The transient nature of short term memes may be a defense against accumulation of deleterious memes. Horizontally transmitted (panmictic) memes with high spreading rate will often not equalize with a genetic trait, spreading outside of natural selection of the hosts, presenting a cumulative existential threat. Vertical transmission reduces replication rate and allows group selection against deleterious memes. Competing mutually exclusive memes contribute to inequality and altruism, but compete through adverse fitness since exclusivity assumes low conversion. Conclusions: The advantage of a portfolio of groups or species may not accrue to a single group. This analytical understanding elevates meme-risk to the level of a candidate solution to the so-called Fermi Paradox, as interstellar travel might require a planet wide group.

scholarly journals A Theoretical Treatment of Memetic Traits Using Gene-Meme, Meme-Meme and Population Equilibrium

2021 ◽  
Author(s):  
Robert Shuler
Keyword(s):  
Industrial Revolution ◽  
Spreading Rate ◽  
Theoretical Treatment ◽  
Genetic Trait ◽  
Transient Nature ◽  
Candidate Solution ◽  
Replication Factors ◽  
Population Equilibrium ◽  
Stability Results ◽  
Selection Of

Background: The term meme includes vertical trait transmission and laterally transmitted ideas that can be lasting or transient. Memes may sometimes follow the logic of population genetics, e.g. learned birdsong, but not when laterally transmitted. Much current work focuses on selection of memes rather than hosts. This paper investigates mathematically the interaction of behaviorally transmitted traits with host selection fitness. Methods: We analyze equilibrium between gene-meme and meme-meme competing propagators and consider whether a meme is linked to reproduction (e.g. vertical culture transmission), or not. We employ a genetic component and combined meme-induced fitness components for hosts, while memes have replication factors to distinguish from what’s good for the host (fitness). We use a Monte Carlo simulation roughly calibrated to the Industrial Revolution to study meme effects on population stability. Results: A basic effective calculus of memetic trait competition and interaction with genes is derived and analyzed. The transient nature of many lateral memes may be a defense against accumulation of deleterious memes. Laterally transmitted (panmictic) memes with high spreading rate will often not equalize with a genetic trait, spreading outside of natural selection of the hosts, presenting a cumulative existential threat. Vertical transmission reduces replication rate and allows group selection against deleterious memes. Competing mutually exclusive memes contribute to inequality and altruism, but compete through adverse fitness since exclusivity assumes low conversion. Conclusions: The advantage of a portfolio of groups or species may not accrue to a single group. This understanding elevates meme-risk to the level of a candidate solution to the so-called Fermi Paradox.

The Light Observation Helicopter Programme of the United States Army

1964 ◽  
Vol 68 (648) ◽  
pp. 819-827
Author(s):  
Charles C. Crawford
Keyword(s):  
United States ◽  
United States Army ◽  
The United States ◽  
Basic Requirement ◽  
Operational Requirement ◽  
Time Period ◽  
Development Concept ◽  
Economic Considerations ◽  
Selection Of

SummaryThe United States Army is now engaged in the selection of a Light Observation Helicopter (commonly referred to as the LOH) from three competing designs. It is estimated that large quantities will be procured to fulfil an operational requirement during the 1966-1975 time period. The paper describes the overall programme by examining the basic requirement and the development concept. In addition, a description of the actual hardware being developed is given and some economic considerations of the modernisation of the observation fleet are discussed.

Impacts of Cold Climate Environmental Conditions on a Riser System Design and Installation

2015 ◽  
Author(s):  
Adekunle Peter Orimolade ◽  
Ove Tobias Gudmestad
Keyword(s):  
Environmental Conditions ◽  
Oil And Gas ◽  
Barents Sea ◽  
Research Work ◽  
Cold Climate ◽  
Field Development ◽  
Climate Region ◽  
Probability Of Occurrence ◽  
The Barents Sea ◽  
Development Concept

Interests in exploration and production of oil and gas in cold climate areas has increased in recent times. This can be attributed to the continual depletion of reserves in mature fields, and recent discoveries of large quantities of oil and gas in the cold climate region, including the more recent discovery of the Alta Reservoir, in the Barents Sea. However, marine operations in this region are faced with challenges resulting from its arctic conditions. Knowledge of the physical environment is important in designing offshore structures, and in planning, and executing marine operations. Selection of a suitable field development concept may be influenced by the probability of occurrence of rare events, such as drifting icebergs. Furthermore, occurrence of mesoscale phenomenon such as polar low pressures may adversely affect planned marine operations. In addition, uncertainties in weather forecasting will reflect on the available weather window to perform installation and interventions works. This paper presents some of the challenges in designing and planning for marine operations in the cold climate region. A possible field development concept for the open water areas of the Norwegian sector of the Barents Sea is discussed. The current research work considers the need for further assessment of the probability of occurrence of drifting icebergs as of importance when selecting field development concept. The Floating Production Storage and Offloading (FPSO) is proposed, and this should be designed with an internal turret system that can be disconnected and reconnected. Some of the challenges associated with riser systems design when considering a turret system with the capability to disconnect and reconnect are discussed. This paper also propose the use of ensemble forecasts as an alternative to the use of alpha factors to estimate operational weather window when planning for marine operations in the Barents Sea. The unpredictability nature of the environmental conditions, especially in the early winter is considered a challenge to marine operations.

A Study of Hydrate Inhibition for Deepwater Gas Field Development

2019 ◽  
Author(s):  
Hualei Yi ◽  
Yun Hao ◽  
Xiaohong Zhou
Keyword(s):  
Produced Water ◽  
Water Flow Rate ◽  
Injection Rate ◽  
Gas Field ◽  
Subsea Pipeline ◽  
Field Development ◽  
Flow Simulations ◽  
The World ◽  
Gas Fields ◽  
Selection Of

Abstract For deepwater subsea tie-back gas field development, hydrate tends to be formed in deepwater subsea production system and gas pipeline due to high pressure and low temperature. Based on the gas field A development, this paper studies the selection of hydrate inhibitors and injection points, i.e. different injection points with different inhibitors. Transient and steady flow simulations are performed using the OLGA software widely used for multiphase flow pipeline study in the world. The produced water flow rate affects the hydrate inhibition in case of well opening, including cases of different times with different water temperatures. This paper presents the calculation of the maximum inhibitor injection rate in the subsea pipeline by taking the whole production years into consideration. The measures on hydrate remediation are taken by quickly relieving the subsea pipeline pressure from wellheads and the platform according to different hydrate locations. Now more and more deepwater gas fields are developed in South China Sea and around the world. The experience obtained from the gas field A development will benefit the hydrate inhibition for future deepwater gas field development.

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