Unconventional Method of Estimating Oilfield Reserve Initially in Place Using Decline Trends Analyses Techniques

2021 ◽  
Author(s):  
Celestine Udie ◽  
Fina Faithpraise ◽  
Agnes Anuka
Keyword(s):  
Time Estimation ◽  
General Information ◽  
Recovery Factor ◽  
Time To Build ◽  
Decline Curves ◽  
Production History ◽  
Long Time ◽  
Using Data ◽  
Oilfield Development ◽  
Cumulative Recovery

Abstract Methods to estimate reserves, recovery factor and time are highlighted using uconventional method, to reduce the challenges in an oilfield development. General Information about reserves production estimation using long and short production data is collated. The collated data are plotted against time to build production decline curves. The curves are used to estimate the decline rate trends and constants. The decline constant is then used to predict reserves cumulative recovery. The rate trend is extrapolated to abandonment for estimation of reserves initially in place, recovery factor and the correspondent time. The reserves values are compared with field values for accuracy. It was observed that the result using data from long time production history accuracy was 99.98% while evaluation models built with data from short production history accuracy was 98.64%. The models are then adopted after validation. The validated curves are used to build the governing models which are finally used in estimating cumulative reserves recovery and initially in place. It is concluded that accurate reserves, recovery factor and time estimation challenges can be achieved/matched up using rate decline trend techniques.

Coastal Community Empowerment Strategy through PT. Antam (Persero) Tbk UBPN Southeast Sulawesi’s CSR Program

2021 ◽  
Vol 1 (1) ◽  
pp. 31-39
Author(s):  
Nur Azisyah Mukmin ◽  
Krisdyatmiko
Keyword(s):  
Mining Industry ◽  
Community Empowerment ◽  
Coastal Communities ◽  
Coastal Community ◽  
Client Relationship ◽  
Long Time ◽  
Qualitative Descriptive ◽  
Using Data ◽  
The Impact ◽  
A Company

This article attempts to analyze the coastal community empowerment strategy of PT. Antam (Persero) Tbk UBPN Sultra’s CSR program. A company which engages in the mining industry should be aware of the impact caused by its activity. 53% of people living in coastal areas, especially for fisherman communities seen their icome decreased. This research used qualitative descriptive approach to examine the company, local government, yayasanbahari, and coastal communities beneficiaries as its unit analysis while also using data collection techniques such as interviews, observation, and documentation to filter the appropriate data. The sustainable economy-based coastal community empowerment program has been carried out since 2017 in 3 (three) villages in Pomalaa District, Kolaka Regency, Southeast Sulawesi. The findings of this research are: a) there is social jealousy between groups of fisherman due to difference in ethnical identities of Bugis, Bajo, and Makassar tribes. This conflict is known as primordial conflict and can be reduced by the creation of trust via interaction between YayasanBahari and coastal communities; b) there is class conflict between the boss and labor fisherman. The interaction between the two is known as the patron-client relationship that has lasted for a long time and has prevent the coastal communities to become self-sustaining.

Erotic Spectacle

2015 ◽  
pp. 107-126
Author(s):  
Omar Ahmed
Keyword(s):  
Indian Cinema ◽  
Film Maker ◽  
Production History ◽  
Long Time ◽  
History Of ◽  
Critical Perspectives ◽  
The Erotic

This chapter focuses on the courtesan film in Indian cinema. The courtesan film has been popular with audiences for a long time but today it is rare to see a mainstream Indian film choosing to use the figure of the courtesan to address the concerns of women in society. An extension of the Muslim Social, the courtesan film reached its creative epoch in the 1970s, exhausting genre possibilities with the erotic spectacle Pakeezah (Pure of Heart, 1972). A complicated production, film-maker Kamal Amrohi took fourteen years to complete Pakeezah. Unfortunately for Indian cinema's tragedy queen, Meena Kumari, who starred in the film, alcoholism cut short her life, and she never got to see what many consider to be her most accomplished work. The chapter analyses Pakeezah from a range of critical perspectives, including the conventions, origins, and history of the courtesan film; the production history and struggle to finish the film; representations of the courtesan related to sexuality and eroticism; an analysis of the song and dance sequences and their relationship to ideology; and the demise of the courtesan film in the contemporary era.

Analysis of Solder Joint Breakdown Life in Electronic Device Mounted in Vehicle

2004 ◽  
Author(s):  
Qiang Yu ◽  
Masaki Shiratori ◽  
Kimimasa Murayama ◽  
Kazuhiro Igarashi ◽  
Takashi Nakanishi
Keyword(s):  
Thermal Fatigue ◽  
Solder Joints ◽  
Electronic Device ◽  
Time Estimation ◽  
Initial Crack ◽  
Fatigue Reliability ◽  
Electric Device ◽  
Long Time ◽  
Reliability Of Solder Joints ◽  
Improve Reliability

In recent years many electric equipments have come to be used for cars. Solder joints in electric device utilizing car are exposed to harder environment and required higher reliability than that in electric household appliances. Because of this reason, thermal fatigue reliability of solder joints has become one of the most important issues in car electronics. Generally thermal fatigue reliability is estimated by thermal cycle examination, but it needs long time. Estimation by FEM enables it to improve reliability and to reduce time. Analysis of solder life generally can predict only initial crack. But it is important to predict crack propagation and solder joints break down, considering that a function of solder joints is electric connection. In this study, the authors proposed a method to predict break down life by analytical approach.

scholarly journals Assessing natural mortality of Bay of Biscay anchovy from survey population and biomass estimates

2016 ◽  
Vol 73 (2) ◽  
pp. 216-234 ◽  
Author(s):  
Andrés Uriarte ◽  
Leire Ibaibarriaga ◽  
Lionel Pawlowski ◽  
Jacques Massé ◽  
Pierre Petitgas ◽  
...  
Keyword(s):  
Egg Production ◽  
Linear Models ◽  
Production Method ◽  
Natural Mortality ◽  
Bay Of Biscay ◽  
Stock Assessments ◽  
Long Time ◽  
Using Data ◽  
Log Linear ◽  
Firm Evidence

The closure of the anchovy (Engraulis encrasicolus) fishery in the Bay of Biscay between 2005 and 2010 because of low biomass levels provided an opportunity to estimate natural mortality using data from egg (daily egg production method, DEPM) and acoustic surveys implemented for the assessment of this population since 1987. Assuming that natural mortality (M) is constant over time and that catchability in both surveys is equal for all ages, M could be estimated using log-linear models on the series of surveys of population numbers at age and seasonal integrated stock assessments. The analysis suggests M values of around 0.9 for a common natural mortality at all ages. However, we found firm evidence that natural mortality at ages 2 and older (M2+) is markedly higher than at age 1 (M1), which indicates senescent mortality, a possibility suggested a long time ago for this type of short-lived species.

scholarly journals Flexible benchmarking: a new reference model

2015 ◽  
Vol 22 (5) ◽  
pp. 920-944 ◽  
Author(s):  
Marcos Ronaldo Albertin ◽  
Heraclito Lopes Jaguaribe Pontes ◽  
Enio Rabelo Frota ◽  
Matheus Barros Assunção
Keyword(s):  
Gap Analysis ◽  
Reference Model ◽  
Online Data ◽  
Content Type ◽  
Time To Build ◽  
Long Time ◽  
Performance System ◽  
The Individual ◽  
Benchmarking System

Purpose – The purpose of this paper is to describe and propose a new way to do benchmarking. It describes an explanatory case study whereby data are collected through an internet benchmarking system with multi-criteria performance. Design/methodology/approach – The research methodology was to conduct a literature review on international journals about evolution, typology and trends of benchmarking. Through a third year case study of Internet Benchmarking and Monitoring System of Productive Arrangements System the authors describe and propose a flexible benchmarking model. Findings – The paper provides empirical insights about a new model of flexible benchmarking taking into account different demands, whereby partners’ data are collected and processed according to their needs. Research limitations/implications – For monitoring and trending analysis more data and time is needed. These three-year applications show that it takes a long time to build a database that can be meaningful for benchmarking and monitoring purposes management. It also requires management maturity, performance system and finally procedures to invite companies to collect and input online data. Practical implications – The paper describes a flexible benchmarking, detailing its features in the form of a case study. The gap analysis shows the individual and collective gaps and requirements. Examples of practical use and reports generated “online” are presented. Originality/value – The paper presents a new potential for the use of benchmarking tools. It is expected to contribute to the academic area, describing ways to achieve greater potential in the use of benchmarking tools, proposing a new way to do benchmarking.

scholarly journals Highly resolved global distribution of tropospheric NO<sub>2</sub> using GOME narrow swath mode data

2004 ◽  
Vol 4 (2) ◽  
pp. 1665-1689 ◽  
Author(s):  
S. Beirle ◽  
U. Platt ◽  
M. Wenig ◽  
T. Wagner
Keyword(s):  
Spatial Resolution ◽  
Power Plants ◽  
General Information ◽  
Global Distribution ◽  
Seasonal Effects ◽  
Standard Size ◽  
Vertical Column ◽  
Large Power ◽  
Tropospheric No2 ◽  
Long Time

Abstract. The Global Ozone Monitoring Experiment (GOME, since 1995) allows the retrieval of global total column densities of atmospheric trace gases, including NO2. Tropospheric vertical column densities (VCDs) are derived by estimating the stratospheric fraction from measurements over the remote ocean. Mean maps of tropospheric NO2 VCDs derived from GOME clearly allow to detect regions with enhanced industrial activity, but the standard spatial resolution of the GOME ground pixels (320×40 km2) is insufficient to resolve regional trace gas distributions or individual cities. Within the nominal GOME operation, every tenth day measurements in the so called narrow swath mode are executed with a much better spatial resolution (80×40 km2). Though the global coverage of these data is – due to the narrow swath – rather poor, the mean distribution over several years (1997–2001) allows to construct a much more detailed picture of the global NO2 distribution, especially if corrected for seasonal effects. It vividly illustrates the shortcomings of the standard size GOME pixels and reveals an unprecedented wealth of details in the global distribution of tropospheric NO2. Sharply localised spots of enhanced NO2 VCD can be associated directly to cities, large power plants, and heavy industry centers. The long time series of GOME data allows a quantitative comparison of the narrow swath mode data to the nominal resolution that holds general information on the dependency of NO2 VCDs on pixel size. This is important for new instruments like SCIAMACHY (launched March 2002 on ENVISAT) or OMI and GOME II (to be launched 2004 and 2005, respectively) with an improved spatial resolution.

scholarly journals SibNet — Siberian Global Navigation Satellite System Network: Current state

2018 ◽  
Vol 4 (4) ◽  
pp. 82-94 ◽  
Author(s):  
Юрий Ясюкевич ◽  
Yury Yasyukevich ◽  
Артем Веснин ◽  
Artem Vesnin ◽  
Наталья Перевалова ◽  
...  
Keyword(s):  
Global Navigation Satellite System ◽  
Satellite System ◽  
General Information ◽  
Navigation Satellite ◽  
Main Research ◽  
Current State ◽  
Wide Range ◽  
Global Navigation ◽  
Using Data ◽  
Global Navigation Satellite

In 2011, ISTP SB RAS began to deploy a routinely operating network of receivers of global navigation satellite system signals. To date, eight permanent and one temporal sites in the Siberian region are operating on a regular basis. These nine sites are equipped with 12 receivers. We use nine multi-frequency multi-system receivers of Javad manufacturer, and three specialized receivers NovAtel GPStation-6 designed to measure ionospheric phase and amplitude scintillations. The deployed network allows a wide range of ionospheric studies as well as studies of the navigation system positioning quality under various heliogeophysical conditions. This article presents general information about the network, its technical characteristics, and current state, as well as the main research problems that can be solved using data from the network.

scholarly journals Data Mining Classification Of Filing Credit Customers Without Collateral With K-Nearest Neighbor Algorithm (Case study: PT. BPR Diori Double)

2020 ◽  
Vol 2 (2) ◽  
pp. 204-210
Author(s):  
Jeprianto Sinaga ◽  
Bosker Sinaga
Keyword(s):  
Data Mining ◽  
Nearest Neighbor ◽  
K Nearest Neighbor ◽  
Nearest Neighbor Algorithm ◽  
Savings And Loans ◽  
Long Time ◽  
K Nearest Neighbor Algorithm ◽  
Using Data ◽  
The Many

Unsecured loans are the community's choice for lending to banks that provide Reviews These services. PT. RB Diori Ganda is a regional private banking company that serves savings and loans and loans without collateral for the community. Submission of unsecured loans must go through an assessor team to process the analysis of the attributes that Affect the customer's classification so that credit can be approved, the which is then submitted to the commissioner for credit approval. But what if Reviews those who apply for credit on the same day in large amounts, of course this will the make the process of credit analysis and approval will take a long time. If it is seen from the many needs of the community to apply for loans without collateral, a classification application is needed, in order to Facilitate the work of the assessor team in the process of analyzing the attributes that Affect customer classification. To find out the classification of customers who apply for unsecured loans for using data mining with the K-Nearest Neighbor algorithm. The result of this research is the classification of problematic or non-performing customers for credit applications without collateral.

The Lomond Field, Block 23/21, UK North Sea

2020 ◽  
Vol 52 (1) ◽  
pp. 511-522 ◽  
Author(s):  
Srmuti Jena ◽  
David Olowoleru
Keyword(s):  
Continental Shelf ◽  
North Sea ◽  
Gas Condensate ◽  
Recovery Factor ◽  
High Recovery ◽  
Integrated Production ◽  
Production Platform ◽  
Production Wells ◽  
Production History ◽  
Very High

AbstractLomond is a gas–condensate field on the east flank of the Central Graben UK Continental Shelf, some 230 km east of Aberdeen in Block 23/21. The field was discovered in 1972 and was developed with nine production wells from an integrated production platform. Lomond is a large salt-induced anticline with four-way dip closure. The reservoir comprises Paleocene turbidite sandstones with the majority of the hydrocarbon volume in the Forties Sandstone Member and the top seal is provided by laterally extensive mudstones of the Sele Formation. The field is structurally compartmentalized with three different hydrocarbon–water contacts, but with the gas leg in pressure communication. Significant reservoir and structural complexities are observed in Lomond Field; however, the production behaviour exhibits classical tank-like depletion behaviour over its production history. With a very high recovery factor to date, the field has produced 883 bcf or 86% of the gas resource initially in place.

scholarly journals Towards a more complete sample of binary central stars of planetary nebulae with Gaia

2021 ◽  
Vol 648 ◽  
pp. A95
Author(s):  
N. Chornay ◽  
N. A. Walton ◽  
D. Jones ◽  
H. M. J. Boffin ◽  
M. Rejkuba ◽  
...  
Keyword(s):  
Binary Systems ◽  
Large Fraction ◽  
Planetary Nebulae ◽  
Close Binary ◽  
Close Binaries ◽  
Photometric Variability ◽  
Long Time ◽  
Using Data ◽  
Central Stars

Context. Many if not most planetary nebulae (PNe) are now thought to be the outcome of binary evolutionary scenarios. However, only a few percent of the PNe in the Milky Way are known to host binary systems. The high-precision repeated observing and long time baseline of Gaia make it well suited for detecting new close binaries through photometric variability. Aims. We aim to find new close binary central stars of PNe (CSPNe) using data from the Gaia mission, building towards a statistically significant sample of post-common envelope, close binary CSPNe. Methods. As the vast majority of Gaia sources do not have published epoch photometry, we used the uncertainty in the mean photometry as a proxy for determining the variability of our CSPN sample in the second Gaia data release. We derived a quantity that expresses the significance of the variability, and considered what is necessary to build a clean sample of genuine variable sources. Results. Our selection recovers a large fraction of the known close binary CSPN population, while other CSPNe lying in the same region of the parameter space represent a promising set of targets for ground-based confirmatory follow-up observations. Gaia epoch photometry for four of the newly identified variable sources confirms that the variability is genuine and consistent with binarity.

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