Sensitivity analysis in using of artificial neural network models to determine infill well locations in a mature oil field
Muhammad Taufiq FathaddinMuhammad Ichsan ArshandaYusni A. RachmanErmandy Astama PutraAsri NugrahantiS Kasmungin
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This paper describes a method to rank potential infill well locations using Artificial Neural Networks (ANN) from existing well data. Sensitivity test was conducted for training and testing data used with comparison 2:8, 4:6, 5:5, 6:4 and 8:2 for each data. Root Mean Square Error difference between training and test data show that the best results obtained from the ratio of training data and testing data 8: 2. Two ANN models were built. The first model predicted top sand depth, resistivity, gamma-ray and density-neutron from infill well location (chosen from structural position and good oil rates from offset wells). The second model predicted initial oil rate from outputs from the first model. Predicted initial oil rates from the ANN model were compared with those from the 3D reservoir simulation model. They shows similar prediction of oil rates which gave high confidence in the predicted oil rate. Very different oil rate prediction between the two models can be used as consideration to improve the simulation model.Keywords:
Infill
Multi-unit residential building based on the Open Building concept is called "S/I house" in Japan, and the number of S/I house construction is on the increase. On the other hand, the demand of infill refurbishment of existing buildings, which was constructed in mass-housing era, is also increasing. Field observations of infill refurbishment of three dwelling units in existing S/I building which had their own infill systems in each were conducted, and construction efficiency and construction process were discussed. It revealed their characteristics and problems in case of individual infill refurbishment, which differ from newly infill construction in various respects.
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Building Construction
Architectural plan
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This development aims to realize new infill systems for elderly residents' living. In the case of renovation, the infill systems should be assembled at low cost in a short period of time and be easily disassembled when residents do not need them any more. For this aims, Raku-Inkyo Infill System was developed The results are as follows: (1) Design and production of 'Infill Components' which are adaptable to small room. (2) An experiment involving the disassembling and withdrawal of the infill components developed in before development. (3) Evaluation of renovated space and infill components.
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Living space
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Abstract This article examines the arguments from the economics and planning literature about both the advantages of infill development and the barriers to it. It begins with reviewing the arguments from the economics, policy, and planning literatures on the possible benefits of infill development, the range of policies to promote infill that have been passed or proposed, and the reasons there may be opposition to infill. It then examines ways to measure infill development. It describes characteristics of infill and reveals issues that influence the extent and trends in the density of infill development. Because of immense opposition to infill development based on its potential costs to local residents, the article explores the literature on the effect of urban projects, including infill, on local property values. Finally, it draws out implications for policy and suggests directions for future research on infill.
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Opposition (politics)
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ABSTRACT This paper presents the results of a 3-D, 3-P reservoir simulation study of waterflood infill drilling in a study area of the Johnson J.L. "AB" unit, located in Ector county, West Texas. The primary objective was to evaluate the waterflood infill drilling performance in the study area. This was accomplished by simulating the waterflood infill drilling performance followed by simulation of an alternative infill scheme or targeted infill drilling, utilizing a detailed reservoir characterization model. An economic evaluation was carried out for both the actual and targeted infilling schemes. The targeted infill drilling scheme resulted in higher recovery and better economic returns as compared to the actual infill drilling scheme. The major inference of this study was that the optimal infill drilling pattern need not necessarily be a regular pattern.
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An infill pattern can be implemented in manufacturing a porous component using 3D Printing technology to reduce the mass of the printed part. The use of an infill pattern and infill angle affects the structure of the printed part. This research aims to investigate the effect of various infill patterns and angles on the compressive strength-to-mass ratio of components manufactured by 3D Printing. This research implements a General Linear Model analysis with two replications. Seventy-two compressive test specimens, according to ASTM D695, are printed and tested for compression. The experiment results show that the type of infill pattern has a significant effect on the mass. However, the mass is not significantly influenced by the infill angle. In addition, the infill pattern type and the infill angle significantly influence the compressive strength of the specimen. Then, the compressive strength-to-mass ratio is significantly affected by the infill patterns and angles. The results indicate that a part using the Honeycomb infill pattern type gains the highest compressive strength-to-mass ratio compared to other infill patterns. On the opposite, the infill pattern that creates the lowest compressive strength-to-mass ratio compared to other infill patterns is the Archimedean chords type. The use of a 45° infill angle causes the lowest compressive strength-to-mass ratio compared to other infill angles. Using a 90° infill angle causes the highest compressive strength-to-mass ratio compared to other infill angles.
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Mass ratio
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The residential infill development monitoring program captures data relating to future infill dwelling supply and building activity in south east Queensland (SEQ). The profile presents infill multiple dwelling planning applications and approvals and infill residential building approvals data by local government area.
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ABSTRACT This paper summarizes the results of a larger study assessing the economic potential of extensive infill drilling in the San Andres/Grayburg, South Central Basin Platform Play.1 The study provides estimates of economically recoverable crude oil and associated gas from infill drilling in 19 West Texas carbonate fields contained in the play. A detailed geologic and engineering analysis was conducted on a specific 640-acre section of the Dune Field (Section 15), which was considered to be representative of the fields in the play and was used for evaluating the potential infill recovery in the analyzed reservoirs. Estimates of recoverable oil and associated gas were contrasted for reductions in well spacing from 80 acres to 10 acres per well, using a uniform or "blanket" infill drilling program compared to a geologically targeted, "strategic" infill drilling program. The results indicate that, due to reservoir heterogeneity, significant volumes of oil and gas are economically recoverable through extensive infill development in the play. Geologically targeted drilling significantly improves project economics and dramatically lowers the threshold oil price required to support project implementation. The results indicate that cost-effective infill development of existing oil and gas fields will increasingly rely on interdisciplinary solutions requiring the expertise of both petroleum geologists and engineers to maximize recovery and economic viability.
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Well drilling
Economic feasibility
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Skeleton/Infill Housing in Japan was developed in 1979 in order to provide a solution to the modem problem of the need to flexibly respond to diversified demands for housing, and to establish a social basis of housing as public housing complexes are realized. In this system, the skeleton like building structure, which has a social nature, is separated from such as interior furnishings, which have more individuality, The public body was the unified supplier of the skeleton, and the private sector satisfied each household's needs in tenus of infill using a demander participation approach, Today however, Skeleton/Infill Housing is required to solve an entirely new housing problem, necessitating a dramatic change of infill. For this reason, this study aims to clear the infill within the system and propose a more flexible system which can provide appropriate information to improve the infill.
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Skeleton (computer programming)
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Abstract The purpose of this paper is to update our original Kansas Hugoton infill drilling studies. This paper examines the performance of the first 1513 infill wells placed on production through September 1992 and presents a number of infill well case histories. Official deliverability tests, production histories and completion data are used to evaluate infill well performance. The case histories review the performance of the older infill wells which shows the greatest potential of finding additional gas-in-place (GIP). These results indicate the infill wells have not found any additional GIP.
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<p class="Abstract">To optimize the 3D printing process, the influence of its parameters on the performance of the printing process needs to be investigated. This research investigates the effect of infill pattern, infill density, and infill angle on the printing time and the filament material length. First, this research collected the printing time and the filament length data for each combination of infill pattern, infill density, and infill angle. The data collection was conducted by implementing Repetier-Host v.2.1.6 software as a data acquisition tool. Then, the General Linear Model was applied to analyze the effect of infill pattern, infill density, and infill angle on the printing time and filament length. Based on the analysis, higher infill density increases the printing time for each infill pattern and each infill angle. Also, higher infill density increases the filament length for each infill pattern and each infill angle. The implementation of the Gyroid type of infill pattern reduces the required printing time for each density. Meanwhile, the implementation of the 3D honeycomb type of infill pattern increases the filament length for each infill angle. The use of the 45° infill angle increases the filament length and printing time. To reduce the filament length and printing time, the 90° infill angle should be implemented.</p>
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Area density
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