Subsea Production Layout: Design and Cost

2017 ◽  
Author(s):  
Cheng Hong ◽  
Yuxi Wang ◽  
Jiankun Yang ◽  
Yuri M. Berbert ◽  
Marcelo I. Lourenço ◽  
...  
Keyword(s):  
Design Procedure ◽  
Layout Design ◽  
Harsh Environment ◽  
Deep Waters ◽  
Complex Design ◽  
Hybrid Solution ◽  
New Ideas ◽  
Water Field ◽  
The Cost ◽  
Very High

The development of a subsea field implies a complex design procedure with very high costs involved. The combination of low oil price, harsh environment, very deep waters and high drilling costs has emphasized the need for new ideas to reduce both CAPEX and OPEX. The paper considers different subsea layout scenarios of a typical deep water field. Each scenario is optimized considering pipeline length, equipment cost and flow assurance. The software QUE$TOR is then applied to estimate the cost of each optimized scenario. Two of them are selected for further studies, FPSO connected to six slots subsea manifolds, and subsea separator connected to eight slots cluster manifolds with tie-back to an existing platform. The latter representing a hybrid solution based on the subsea-to-shore concept. Cost and technical feasibility are considered in order to evaluate the two scenarios.

scholarly journals Cost per DALY averted in low, middle- and high-income countries: evidence from the global burden of disease study to estimate the cost-effectiveness thresholds

2021 ◽  
Vol 19 (1) ◽  
Author(s):  
Rajabali Daroudi ◽  
Ali Akbari Sari ◽  
Azin Nahvijou ◽  
Ahmad Faramarzi
Keyword(s):  
Cost Effectiveness ◽  
Inverse Correlation ◽  
Gdp Per Capita ◽  
Middle Income ◽  
Capita Health Expenditure ◽  
Per Capita ◽  
Healthcare Interventions ◽  
Disease Study ◽  
The Cost ◽  
Very High

Abstract Background Determining the cost-effectiveness thresholds for healthcare interventions has been a severe challenge for policymakers, especially in low- and middle-income countries. This study aimed to estimate the cost per disability-adjusted life-year (DALY) averted for countries with different levels of Human Development Index (HDI) and Gross Domestic Product (GDP). Methods The data about DALYs, per capita health expenditure (HE), HDI, and GDP per capita were extracted for 176 countries during the years 2000 to 2016. Then we examined the trends on these variables. Panel regression analysis was performed to explore the correlation between DALY and HE per capita. The results of the regression models were used to calculate the cost per DALY averted for each country. Results Age-standardized rate (ASR) DALY (DALY per 100,000 population) had a nonlinear inverse correlation with HE per capita and a linear inverse correlation with HDI. One percent increase in HE per capita was associated with an average of 0.28, 0.24, 0.18, and 0.27% decrease on the ASR DALY in low HDI, medium HDI, high HDI, and very high HDI countries, respectively. The estimated cost per DALY averted was $998, $6522, $23,782, and $69,499 in low HDI, medium HDI, high HDI, and very high HDI countries. On average, the cost per DALY averted was 0.34 times the GDP per capita in low HDI countries. While in medium HDI, high HDI, and very high HDI countries, it was 0.67, 1.22, and 1.46 times the GDP per capita, respectively. Conclusions This study suggests that the cost-effectiveness thresholds might be less than a GDP per capita in low and medium HDI countries and between one and two GDP per capita in high and very high HDI countries.

scholarly journals The Application of Electromagnetic Sensors for Determination of Cherenkov Cone Inside and in the Vicinity of the Detector Volume in Any Environment Known

Sensors ◽  
2021 ◽  
Vol 21 (3) ◽  
pp. 992
Author(s):  
Valeriu Savu ◽  
Mădălin Ion Rusu ◽  
Dan Savastru
Keyword(s):  
Energy Levels ◽  
Cherenkov Detector ◽  
Electromagnetic Sensors ◽  
The Cost ◽  
Information Errors ◽  
The Universe ◽  
Large Frequency ◽  
Very High ◽  
Detector Volume

The neutrinos of cosmic radiation, due to interaction with any known medium in which the Cherenkov detector is used, produce energy radiation phenomena in the form of a Cherenkov cone, in very large frequency spectrum. These neutrinos carry with them the information about the phenomena that produced them and by detecting the electromagnetic energies generated by the Cherenkov cone, we can find information about the phenomena that formed in the universe, at a much greater distance, than possibility of actually detection with current technologies. At present, a very high number of sensors for detection electromagnetic energy is required. Thus, some sensors may detect very low energy levels, which can lead to the erroneous determination of the Cherenkov cone, thus leading to information errors. As a novelty, we propose, to use these sensors for determination of the dielectrically permittivity of any known medium in which the Cherenkov detector is used, by preliminary measurements, the subsequent simulation of the data and the reconstruction of the Cherenkov cone, leading to a significant reduction of problems and minimizing the number of sensors, implicitly the cost reductions. At the same time, we offer the possibility of reconstructing the Cherenkov cone outside the detector volume.

scholarly journals Addition of Flucytosine to Fluconazole for the Treatment of Cryptococcal Meningitis in Africa: A Multicountry Cost-effectiveness Analysis

2019 ◽  
Vol 70 (1) ◽  
pp. 26-29 ◽  
Author(s):  
Tinevimbo Shiri ◽  
Angela Loyse ◽  
Lawrence Mwenge ◽  
Tao Chen ◽  
Shabir Lakhi ◽  
...  
Keyword(s):  
Sensitivity Analysis ◽  
Cost Effectiveness ◽  
Cryptococcal Meningitis ◽  
Cost Effective ◽  
Immunodeficiency Virus ◽  
The Mean ◽  
The Cost ◽  
The Impact ◽  
Costing Analysis ◽  
Very High

Abstract Background Mortality from cryptococcal meningitis remains very high in Africa. In the Advancing Cryptococcal Meningitis Treatment for Africa (ACTA) trial, 2 weeks of fluconazole (FLU) plus flucytosine (5FC) was as effective and less costly than 2 weeks of amphotericin-based regimens. However, many African settings treat with FLU monotherapy, and the cost-effectiveness of adding 5FC to FLU is uncertain. Methods The effectiveness and costs of FLU+5FC were taken from ACTA, which included a costing analysis at the Zambian site. The effectiveness of FLU was derived from cohorts of consecutively enrolled patients, managed in respects other than drug therapy, as were participants in ACTA. FLU costs were derived from costs of FLU+5FC in ACTA, by subtracting 5FC drug and monitoring costs. The cost-effectiveness of FLU+5FC vs FLU alone was measured as the incremental cost-effectiveness ratio (ICER). A probabilistic sensitivity analysis assessed uncertainties and a bivariate deterministic sensitivity analysis examined the impact of varying mortality and 5FC drug costs on the ICER. Results The mean costs per patient were US $847 (95% confidence interval [CI] $776–927) for FLU+5FC, and US $628 (95% CI $557–709) for FLU. The 10-week mortality rate was 35.1% (95% CI 28.9–41.7%) with FLU+5FC and 53.8% (95% CI 43.1–64.1%) with FLU. At the current 5FC price of US $1.30 per 500 mg tablet, the ICER of 5FC+FLU versus FLU alone was US $65 (95% CI $28–208) per life-year saved. Reducing the 5FC cost to between US $0.80 and US $0.40 per 500 mg resulted in an ICER between US $44 and US $28 per life-year saved. Conclusions The addition of 5FC to FLU is cost-effective for cryptococcal meningitis treatment in Africa and, if made available widely, could substantially reduce mortality rates among human immunodeficiency virus–infected persons in Africa.

Optimally Sensitive and Efficient Compact Loudspeakers for Low Audio Frequencies

2007 ◽  
Vol 38 (7) ◽  
pp. 11-17
Author(s):  
Ronald M. Aarts
Keyword(s):  
Optimality Criterion ◽  
Low Frequency ◽  
Audio Signal ◽  
Design Procedure ◽  
Frequency Range ◽  
Force Factor ◽  
Low Frequencies ◽  
Limited Frequency ◽  
The Cost ◽  
Higher Sensitivity

Conventionally, the ultimate goal in loudspeaker design has been to obtain a flat frequency response over a specified frequency range. This can be achieved by carefully selecting the main loudspeaker parameters such as the enclosure volume, the cone diameter, the moving mass and the very crucial “force factor”. For loudspeakers in small cabinets the results of this design procedure appear to be quite inefficient, especially at low frequencies. This paper describes a new solution to this problem. It consists of the combination of a highly non-linear preprocessing of the audio signal and the use of a so called low-force-factor loudspeaker. This combination yields a strongly increased efficiency, at least over a limited frequency range, at the cost of a somewhat altered sound quality. An analytically tractable optimality criterion has been defined and has been verified by the design of an experimental loudspeaker. This has a much higher efficiency and a higher sensitivity than current low-frequency loudspeakers, while its cabinet can be much smaller.

scholarly journals Investor Protection and Agency Theory in Corporate Governance in Pakistan

2021 ◽  
Vol 3 (1) ◽  
pp. 12-21
Author(s):  
Imtiaz Ahmed Khan ◽  
Altaf Hussain Abro ◽  
Farooque Ahmed Leghari
Keyword(s):  
Corporate Governance ◽  
Agency Theory ◽  
Agency Cost ◽  
Corporate Structure ◽  
Minority Shareholders ◽  
Private Benefits ◽  
Controlling Shareholders ◽  
Global Trend ◽  
The Cost ◽  
Very High

The paper discusses the minority shareholders’ protection under the quantumof agency cost in corporate governance in Pakistan. The agency theory statesthat in most of the cases, the controlling shareholders and the topmanagement are normally involved in expropriating the funds of the company.This phenomenon increases the agency cost. The agency cost is directlyproportional to the cost of functioning of the company. In other words, theagency cost is inversely proportional to the profit of the company. Accordingto the agency theory, if the agency cost is decreased, the profit for investorincreases. The Pakistani corporate sector is dominated by the businessfamilies, the state and an opportunity to get the private benefits at the cost ofother stakeholders. There are the different mechanisms as discussed andapplied around the world to minimize the agency cost so as to make companyfinancially strong and better profit for the investors. In Pakistan, the agencycost is very high. Hence, there is a need to revamp the corporate governancemechanism to reduce the agency cost in order to provide a better protection tominority shareholders in a particular in the context of the global trend keepingin the view of the nature of corporate structure in Pakistan.

scholarly journals DIGI-INNO Tech: Reinventing Innovations

2020 ◽  
pp. 356-360
Keyword(s):  
High Speed ◽  
Social Innovation ◽  
Innovation Management ◽  
Innovation Process ◽  
Value Chains ◽  
Technological Innovations ◽  
Green Innovation ◽  
Digital Innovation ◽  
New Ideas ◽  
Very High

Digital-Innovation Technology calls for reinvention of innovations that offers new opportunities and challenges to design new products and services in the era of hi-tech competition. Digitalization and innovations are pressing issues for business in almost each and every industry. The scope to create new digital value chains increases at a very high speed due to interconnection of people and systems . It is to be believed that wonderful new ideas can open up new ways of looking at various Social Problems because of Digi-Inno connection between people and software. However creating digitalized product and services often creates new problems and challenges to the firm that are trying to innovate. The concept of reinvention in innovation process is redesigning the innovations coupled with advances in science and technology. Technological innovations are only one of many kinds of innovation that develops variety of terms like social innovation, sustainable innovation, responsible and green innovation. In this paper, we tried to give special emphasis on issues of digital innovation management which helps to seek a better base for reinventing innovation management research in digital innovative world.

scholarly journals Borehole Rehabilitation: A Case Study in the Dunkwa Mining Town

2020 ◽  
Vol 20 (2) ◽  
pp. 11-17
Author(s):  
A. Ewusi ◽  
J. Seidu
Keyword(s):  
Water Supply ◽  
Central Region ◽  
Pumping Test ◽  
Implementation Cost ◽  
Mining Town ◽  
Long Time ◽  
Borehole Camera ◽  
The Cost ◽  
Very High

Rehabilitation works were carried out on boreholes in the Dunkwa Mining town in the Central Region of Ghana. These works were carried out because the boreholes had lost their original yields due to clogging, corrosion and encrustation and had been abandoned for a long time. The cost of drilling a new well and assessing the productivity of the well is $4,500 which is more expensive that carrying out rehabilitation works which is cheaper, about $800. Also, the initial yields of the boreholes were very high according to the feasibility report which is not a common characteristic of the rocks in the area. Camera inspection followed by rehabilitation, pre and post pumping tests were carried out to assess whether there has been an improvement in their yield after the exercise and that the yield obtained will be adequate for a water supply design. Results show that all the boreholes had an improvement in their yields (57.19 - 259.80 %) after the rehabilitation. It can therefore be concluded that rehabilitation is effective in restoring boreholes to their original yields. Organisations drilling boreholes to communities can take advantage of rehabilitation of the existing boreholes located in the communities which are high yielding, thereby reducing project implementation cost. Keywords: Borehole Rehabilitation, Borehole Yields, Borehole Camera Inspection, Pumping Test

scholarly journals Inexpensive Intelligence Using Procedural Propositional Logic

2009 ◽  
Vol 13 (2) ◽  
Author(s):  
Richard C. Hicks ◽  
Keith Wright
Keyword(s):  
Propositional Logic ◽  
Inference Engine ◽  
External Costs ◽  
High Return ◽  
Order Of Magnitude ◽  
Inference Systems ◽  
The Cost ◽  
Engine Systems ◽  
Logic Rule ◽  
Very High

Implementations of inference engine systems invoke many costs, including the cost of the inference engine itself, the cost of integrating the inference engine, and the cost of specialized personnel needed to create and maintain the system. These costs make a very high return on investment a criterion for incorporating these systems into the corporate portfolio of applications and technologies. Recently, the No Inference Engine Theory (NIET) [8] has been developed for creating procedural propositional logic rule-based systems. The NIET systems are implemented in traditional procedural languages such as C++ and do not need an inference engine or proprietary languages, thus eliminating the cost of the inference engine, the cost of integrating the system, and the cost for knowledge of a proprietary language. In addition, these procedural systems are an order of magnitude faster [8] than inference systems and maintain linear performance. For problems using propositional logic, the procedural systems described in this paper offer dramatically lower costs, higher performance, and ease of integration. Lowering the external costs and eliminating the need for specialized skills should make NIET systems more profitable and lead to the wider use of propositional logic systems in business.

High Production Well Operating Plant in a Traditional Design: Piping & Instrumentation Challenges

2021 ◽  
Author(s):  
Jordana Luiza Barbosa da Costa Veiga ◽  
Antonio Jose Renno Chaves ◽  
Breno De Souza e Silva ◽  
Ivan Noville Rocha Correa Lima ◽  
Ilvan Porto Jr Pereira ◽  
...  
Keyword(s):  
Production Potential ◽  
Great Expectation ◽  
Deep Waters ◽  
Alternative Approach ◽  
Production Wells ◽  
Full Production ◽  
High Production ◽  
Technical Assessment ◽  
Very High ◽  
Operating Plant

Abstract During the exploration design phase of recent pre-salt development in Santos Basin, it was identified great potential for the production of some wells, generating great expectation by how it would perform in the production phase, above the average of 30,000 bpd. The Subsea and Topside design were developed based on this expectation and therefore, diameters were limited considering the premises of 45,000 bpd production from the well to the FPSO. As a result of first oil production the expectation not only became a reality but also was largely supersede, confirming a very high production potential of up to 65,000 bpd per well, some of which are at the world top list of highest production wells for deep and ultra-deep waters. Despite the outstanding high potential of the well, full production was then, not able to be achieved due to limitations considered in the design's premises of 45,000 bpd per well, what overcome the already great expectation. In this scenario, there was intense effort to make the real production potential of the wells viable. To fit the design to the new dynamic flow conditions, a multidisciplinary technical assessment team was mobilized involving several disciplines such as: Subsea Equipment, Wells, Risers, Process, Piping, Instrumentation and Automation, in addition to Operational Safety, a non-negotiable value. After technical discussions between those different disciplines, alternative proposals were raised that could make possible a safe operation under this new challenging condition. The defined actions were implemented and currently the wells already operate on high levels of production. On the FPSO with those high production wells, due to this individual increase in the production, whose potentials exceed by 45% the design capacity, generating a significant increase in the profitability of the asset, contributing to revenues anticipation in the company's cash flow. This article presents the piping and instrumentation study to deal with a high flow velocity issue. The methodology adopted to overcome the challenges in vibration and erosion considered an unusual design approach, leading to some field test to check the effectiveness of the solution. This alternative approach allowed this increment in production rate per well piping branch.

Smart Healthcare

2018 ◽  
pp. 21-33
Author(s):  
R. Rajkumar
Keyword(s):  
Internet Of Things ◽  
Real Time ◽  
Cost Effective ◽  
Reliable System ◽  
Smart Healthcare ◽  
Cloud Server ◽  
Android App ◽  
The Cost ◽  
Very High ◽  
At Home

Internet of things is a revolutionary domain, when we use it for the wellness of people in a smart way. As of now, the cost to implement IoT-enabled services is very high. So, this chapter introduces a cost effective and a reliable system to monitor patients at home and in hospitals with the help of IoT. The monitored details of a person can be drawn at any time with the help of an android app, which can produce output at real-time. The processed data are stored in the UBIDOTS cloud server, and the patients' needs can be met in time as well lives saved during critical cases with the help of the system proposed in this chapter.

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