bluuebunny/crossref_metadata_2025_split huggingface dataset:
Pengaruh Motivasi Kerja Terhadap Kinerja Karyawan Bagian Produksi (Studi Pada PT. Mitratani Dua Tujuh, Jember)
Authors: Putri Youlanda Rahmasarita , BP Dwi Windradini , Suhartono Suhartono 
Published: June 2023

This study aims to explain the effect of work motivation on the performance of production employees at PT. Mitratani Dua Tujuh, Jember. This type of research is quantitative research with a positivistic approach. The population of this research is the permanent employees of the production division of PT. Mitratani Dua Tujuh, Jember in 2022. The number of samples for this research is 50 respondents. The data collection tchnique used is a questionnaire. Testing this research instrument using the validity test and reliability test. Analysis of the data used is multiple linear regression analysis with the F test and T test. The results of the T test and F test show that the work motivation variable has a significant positive effect of 0.000 on the performance of employees at PT. Mitratani Dua Tujuh, Jember. The coefficient of determination in this study shows that the value of R Square is 0.590, meaning that work motivation has an effect of 59% on employee performance. The results of the descriptive data analysis show that the highest score is X_1 worth 222 about harmonious interaction between fellow employee and Y_10 worth 228 about work done in a disciplined manner, the lowest score is X_6 worth 195 about praise given in accordance with personal performance appraisal and Y_5 worth 195 about quality of work better than other colleagues.
Keywords: Work Motivation and Employee Performance
Jaminan Mutu pada Pengujian Pour Point ASTM D-97, Flash Point PMcc ASTM D-93 dan Viskositas Kinematik ASTM D-445 di Laboratorium Minyak Bumi PPSDM Migas Cepu
Authors: Salmahaminati Salmahaminati , Candra Dewinara Restu Yudandhiss  , Sahadad  
Published: June 2023

Telah dilakukan pengujian jaminan mutu pada pengujian pour point ASTM D-97, flash point PMcc ASTM D-93 dan viskositas kinematik ASTM D-445 di Laboratorium Minyak Bumi PPSDM Migas Cepu. Penelitian ini bertujuan untuk mengetahui pengendalian mutu pada pengujian pour point ASTM D-97, flash point PMcc ASTM D-93 dan viskositas kinematik ASTM D-445 di Laboratorium Minyak Bumi PPSDM Migas Cepu. Pour point atau titik tuang adalah suhu terendah dimana bahan bakar minyak masih dapat mengalir dengan sendirinya pada kondisi pengujian. Flash point adalah temperatur terendah dimana campuran uap bahan bakar dan udara dapat menyala sekejap apabila terkena pipa dan kondisi tertentu atau dapat menyambar saat dilewatkan api kecil diatasnya. Viskositas kinematik adalah ukuran besar kecilnya hambatan suatu fluida untuk mengalir. Sampel yang digunakan yaitu solar dan Certified Reference Material (CRM). Pada pengendalian mutu dengan control chart berdasarkan parameter viskositas, flash point, dan pour point menunjukkan bahwa nilai pour point, flash point, dan viskositas kinematik berada dalam kendali Upper Warning Limit (UWL) dan Lower Warning Limit (LWL). Hal ini menunjukkan hasil pengujian solar yang berada dalam batas kendali yang baik sedangkan pada analisa pengujian CRM dengan Flash Point diperoleh nilai Flash Point terkoreksi sebesar 60,165 °C sementara nilai flash point pada label CRM sebesar 62,2 °C dan pada analisa pengujian viskositas kinematik diperoleh nilai viskositas sebesar 2,6804434 (mm2/s) sementara nilai viskositas pada label CRM sebesar 2,690 (mm2/s). Hal ini menunjukkan bahwa pengujian CRM dengan metode Flash Point dan Viskositas yang dilakukan kurang akurat.
MENINGKATAKAN LITERASI PEMASARAN MELALUI PEMANFAATAN MARKETPLACE PADA IBU RUMAH TANGGA KAWASAN MURIA
Authors: Rahmawati Auliya , Imaduddin Muhamad 
Published: June 2023

Desa Colo merupakan salah satu desa destinasi wisata alam dan religi Sunan Muria di Kecamatan Dawe, Kabupaten Kudus yang sebagian besar masyarakatnya memiliki Usaha Mikro Kecil dan Menengah (UMKM). Era digitalisasi telah merubah pola bisnis yang dapat dilakukan oleh siapa saja, di mana saja, dan kapan saja. Salah satu peluangnya adalah pemanfaatan platform marketplace dalam pemasaran produk, baik produk milik sendiri maupun produk yang diperoleh dari produsen. Peningkatan teknologi pemasaran diperlukan untuk mengambil peluang bisnis sebagai tambahan penghasilan dan pendapatan bagi para ibu rumah tangga yang masih memiliki waktu luang dalam kesehariannya di Desa Colo. Kegiatan pengabdian ini merupakan program yang bertujuan untuk meningkatkan literasi teknologi pemasaran pada ibu rumah tangga (IRT) melalui pendampingan pemanfaatan platform marketplace. Peserta program berjumlah tujuh orang yang dipilih dengan kriteria IRT yang memiliki waktu luang, familiar dengan penggunaan smartphone, serta memiliki ketertarikan dalam melakukan usaha sampingan melalui jual beli online. Pelaksanaan program mencakup tahapan (1) Perencanaan; (2) Paparan materi dan ide bisnis; (3) Pemanfaatan platform digital marketplace; dan (4) Praktik penyelesaian masalah. Data diperoleh melalui dokumentasi dan observasi respon dan performa peserta pendampingan. Hasil menunjukkan bahwa peserta pendampingan dapat memanfaatkan paltfor marketplace dan memahami penyelesaian pada problem dalam penggunaan platform marketplace.
Multilateral Wells to Control Water Inflow in Reservoir Connected to Active Underlying Aquifers: A Technical and Economic Analysis
Authors: Muñoz Mazo E. O. , Delgadillo Aya C. L. , Espinosa Leon C. , Rueda Lizarazo A. , Toro Agudelo L. , Naranjo Pacheco A. M. , Arango Gómez S. , Nava Ardila G. A. , Villasmil Montero J. A. , Manrique Ventura E. J. 
Published: June 2023

Abstract
In formations with good storage and flow capacity connected to underlying aquifers with strong water intrusion due to the absence of geological seals, conventional primary or enhanced production techniques do not seem to solve the aquifer's water encroachment problem. This work presents the technical and economic analysis of the use of wells with multilateral architectures as an alternative to overcome the uncontrolled water inflow from active aquifers and its consequences on oil productivity.
To analyze the production options of an area with strong water influx in a Colombian field, different configurations of multilateral wells were studied considering the governing flow mechanisms in the reservoir. To do so, a numerical simulation workflow was proposed, using local grid refinement analysis to guarantee the representativeness of the active aquifer inflow phenomenon and the operating parameters that maximize the performance of these wells were determined through sensitivity analysis.
The results of this study demonstrate the potential of the technology to increase oil production and ultimate oil recovery by adequately managing the drained water from the aquifer in a cost-effective manner. A well drilled in an unsealed area with strong aquifer inflow quickly exceeds the 99% water cut and must be shut after a cumulative production of only 40000 BBL of oil. This is the case of more than 5000 Mbbl of oil stored in Colombian fields, connected to very active aquifers that currently cannot be produced economically. Bilateral or multilateral well configurations allow, simultaneously, oil production in the interest area and the creation of a water drainage area below the oil-water contact. In this way, it is possible to mechanically control the water inflow to the oil-producing segment, keeping the water cut below the economic limit (99.5%), increasing the cumulative oil production, and extending its productive life. As for the drained water, there are several management options, either producing it to the surface or reinjecting it into a nearby (upper or lower) formation.
The results of the numerical analysis show that the oil production of a well located in an unsealed zone with strong water encroachment, can increase more than 7 times if the proposed drainage segment support is used in the multilateral configuration. It is possible to keep the water cut below the economic limit and increase the well productive life.
Polymer Flooding from Day One: Reservoir Modelling Challenges and Development Strategy Definition
Authors: Weisman I. , Thomann M. , Gamboa M. , Godino G. , Gandi S. 
Published: June 2023

Abstract
This paper describes two aspects of a polymer flooding project in a multilayer low-dipping, heavy oil reservoir (100 to 250 cp): reservoir numerical simulation and field development strategy. The field is produced only by discovery and delineation wells. The proposed development plan consists in applying EOR without a preceding water flooding.
The Upper Centenario formation lies completely within a water-oil transition zone due to its low structural dip and high oil viscosity. In order to simulate reservoir behavior, end point scaling was necessary. The simulation was used to perform production forecasts, defining the optimal development plan, and performing sensitivity analyses to different uncertain parameters.
A modular field development plan was proposed to reduce the capital exposure and facilities investment. The plan consists of developing the field with a fixed number of polymer injection units (hereafter, PIU), that is related to the fluid treatment capacity.
The field is at an early stage of development, thus having a relatively short production history and rather long well spacing. Therefore, simulation history matching process has multiple degrees of freedom. Sensitivities to static and dynamic parameters were performed such as: net to gross ratio, oil-water contact, relative permeabilities, etc. Also, sand displacement was detected during the well completion, producing reservoir self-stimulation. Additional sensitivity was considered to evaluate its impact.
Due to high water-oil mobility ratio, EOR development without a water flooding stage was decided. A modular EOR development in three stages using 5 PIU with 10 polymer injection wells each one, was proposed, starting from zones with the highest expected recovery. The pattern array is 5-spot with 200-250 m well spacing. Injection time/volume is decided to optimize the project NPV, moving the PIU afterwards to a new zone.
The modular development reduces the maximum capital exposure (maximum downside exposure, hereafter, MDE) and facilities investment, thus improving the project economics in comparison to full field simultaneous development. Also, modular strategy will allow us to perform better risk management.
The present work shows a methodology to simulate a complex reservoir in an early development stage and perform several forecast scenarios.
The paper demonstrates how the modular strategy approach reduces the MDE and helps to mitigate risk.
Digital Innovation for Fault Diagnosis and Control of Sensor Variables. Reduction in Operational Time and Cost in Run-In-Hole
Authors: Mateus D. , Ramírez H. , Cruz J. , González C. , Pinilla J. 
Published: June 2023

Abstract
The Oil and gas industry is continuously searching for a digital transformation and evolution to Industry 4.0. It plans to complement it whit cutting-edge technologies that positively impacts the installation processes of electro submersible pumping systems (ESP).
A few years ago, there wasn't a system capable of giving continuous and on real time ESP downhole diagnosis during Run in Hole operations under any weather conditions and without interruption, situation that usually generated nonproductive times, by not having the ability to identify an electrical fault at the instant it occurred.
To reduce periodic stops of the drilling RIG and not to prolong working hours checking electrical conditions, a digital solution was developed with real-time failure identification warning of any electrical and mechanical condition associated with the system (CABLE-MOTOR-SENSOR) during installation. The system is composed by wireless connection to obtain background sensor data reading, with instantaneous fault indicator and web interface, in addition to downloadable data logging that is compatible without connectivity limits for Smartphones and Laptops.
By using the system while installing, the time of exposure of personnel to electrical and mechanical risks is reduced by 75% from 4 hours to 1 hour per service and a considerable saving of 16% was obtained in the total time of completion under normal conditions; in the event of an electrical failure with immediate detection, a saving of up to 40% could be achieved. Considering the volume of operations in the country, an economic benefit of US$ $840,000 per year can be obtained. The development and implementation tests were successful, and it was determined to expand the use of the tool during services to increase customer benefits and reduce non-productive times.
Induced Flow Geometries During Steam Injection in Unconsolidated Sand in Heavy and Extra-Heavy OiI Fields in Mexico
Authors: Cinco-Ley H. , Chavez S. , Aguilera R. 
Published: June 2023

Abstract
This objective of this paper is to demonstrate that transient linear flow is the dominant behavior in unconsolidated sands performing under steam injection in Mexico.
It has been observed in the past and there is evidence from fall-off tests that all wells injecting water in unconsolidated sands that store heavy oil exhibit a condition similar to being fractured. Apparently, this is the result of high mobility around the fracture. Something similar can occur during the processes of cyclic steam and continuous steam injection in unconsolidated sands. This is investigated in detail in this paper with different types of transient pressure tests.
The paper presents the analysis of falloff, injection and interference tests carried out in steam injection wells in an unconsolidated sand that stores extra-heavy oil. Subsequent to a series of steam injection cycles, the well exhibited a transient pressure behavior that is characteristic of linear geometry. The boundary of the linear flow behavior is associated with the extra-heavy oil zone not affected by steam. Furthermore, subsequent to a period of continuous gas injection (as opposed to the previous cyclic gas injection), it was observed that linear flow was prevalent again. In addition, an interference test was carried out between the injection well and another well producing from the same unconsolidated sand. The interference pressure signal at short times showed a behavior that corresponds to linear flow. The test also permitted to estimate the compressibility of the unconsolidated sandstone. Based on the evidence collected during the different tests, the conclusion is reached that during the processes of steam cyclic and steam continuous injection, a channel of high oil mobility was generated by the viscosity contrast of water and extra-heavy oil. This channel is limited by oil zones not affected by steam.
The novelty of the paper is demonstrating that transient linear flow is prevalent throughout the fall-off, injection and interferences tests in the Mexican unconsolidated sand. It is likely that the same observation might have application is other unconsolidated sands undergoing steam injection.
Modeling Caprock Failure During Injection in a CO2 Capture and Storage Project Using a Compositional/Geochemical/Geomechanical Coupled Numerical Simulation
Authors: Alvarez Argenis , Mercado Diana , Salazar Victor 
Published: June 2023

Abstract
Carbon Capture and Storage (CCS) in a geological formation is being implemented in different countries around the world as an alternative to reduce CO2 emissions from the atmosphere. To assess the CCS project implementation feasibility, it is necessary the assurance of the injected CO2 confinement considering the main trapping mechanism (e.g., structural trapping, residual gas or mineralization, etc.) and operational parameters like injection rate/pressure and caprock integrity.
The caprock integrity is the key to avoiding CO2leakage to the surface or overlying formations, like freshwater aquifers, due to the pressure increase during the CO2 injection. To mitigate the risk of caprock failure, a full compositional, geochemical and geomechanical coupling approach must be implemented to estimate the fluid flow, the gas solubility in the aqueous phase, the stress distribution and the deformation in the formations. As part of the CSS modelling, it is also necessary to optimize the operational parameters to inject the maximum volume of CO2 considering the caprock properties uncertainties.
In this work, we present an integrated methodology to mitigate the caprock failure risk in a CSS project using compositional/geomechanical coupled numerical simulation. In this methodology we show the main physical/chemical effects that must be considered in the reservoir model during the CCS modeling. Subsequently, a geomechanical model was coupled to the reservoir model, to consider the effect of the stress distribution changes on the caprock integrity. Finally, an optimization study was performed considering operating well constraints and well location looking for an increase of the volume of CO2 injected avoiding caprock failure.
Downhole Water Sink at High Mobility Ratio: The Tambaredjo Field Pilot Test
Authors: Niz-Velasquez E. , Nagesar H. S. , Bhajan R. V. , Nandlal B. 
Published: June 2023

Abstract
This study discusses the development and results of the Downhole Water Sink (DWS) pilot test in two wells of the Tambaredjo Field (Suriname). It includes the mechanical completion, design and execution of operating strategy, well performance and forecast, and reservoir simulation employing an oil-in-water emulsion formulation.
The DWS process, well and reservoir information and properties are introduced. The problem of heavy oil production in oil-water contact (OWC) areas is explained. The results in terms of production data and its analysis, and issues encountered, are presented. A reservoir simulation model capable to handle transport of oil components in water phase is described and used to history-match the production performance. Then, conclusions are drawn from the information presented.
Although the water sink is expected to work under stable displacement conditions, the results of the pilot test show that DWS could successfully reduce water coning at the prevalent unstable mobility ratio. It also promoted inverted coning of oil from the transition zone to the water leg completion. This was confirmed by direct measurements of oil content in the fluid produced from the water leg completion. The physical mechanism that allows such phenomenon is hypothesized to be the flow of oil droplets of size smaller than that of the typical pore throat. Such mechanism was numerically modeled and found to be consistent with the pressure and rate measurements at both wells. Early measurement and completion issues in the first well were overcome later on and in the second well.
This paper presents the first results for DWS in a heavy oil reservoir with highly adverse mobility ratio. The results will serve as a guidance for implementation of DWS in heavy oil reservoirs overlying an oil-water contact.
Artificial Intelligence (AI) Inside of Rock Physics Modelling, Case of Study in Tight Sand Reservoir.
Authors: Bassoult L. A. Castellanos 
Published: June 2023

Abstract
Artificial Intelligence (AI) and Machine Learning (ML) have made log reconstruction process much easier, faster, and economical by means of learning through uncounted experiences from already explored and developed reservoirs, their rock properties, and the cross-ponding fluid flow behavior under different circumstances and hence, predicts accordingly. AI doesn't require prior knowledge of the petrophysical response equations and is self-calibrating. There are no parameters to pick or cross-plots to make. There is very little user intervention and AI avoids the problem of ‘garbage in, garbage out’ (GIGO), by ignoring noise and outliers. AI programs work with an unlimited number of electrical logs, core and gas chromatography data; and don't ‘fall-over’ if some of those inputs are missing. Quantitative seismic petrophysical interpretation is the skillful integration of geophysical, geological, petrophysical, reservoir engineering, and production data in the predictive determination of reservoir properties, such as rock-fluid properties and fluid contacts. It predicts reservoir extent and development away from the wellbore, and it is used to optimize well placement and to support appraisal and field development planning. (Applied Techniques to Integrated Oil and Gas Reservoir Characterization A Problem-Solution Discussion with Geoscience Experts 2021, Pages 233-248). In Seismic petrophysics the rocks must first be classified according to principles that tend to consider petrophysical, compositional, and textural parameters simultaneously. Careful editing and conditioning of well-log data are two of the first steps in the seismic petrophysics workflow. Even moderately inaccurate information about the elastic rock properties in situ can generate significant errors in rockphysics and, hence, in synthetic seismic models later, during the quantitative seismic analysis (Smith, 2011). The mathematical techniques used by the AI include neural networks, genetic algorithms, random forests and fuzzy logic.
Since we wanted to have a better control in the development of wells within the field under study, a seismic inversion was carried out, knowing the importance of the P and S velocity logs, the need arose to control the input information for the modeling of elastic properties, certain wells lacked information on S waves, for which reason this exercise was carried out, in order to validate what was predicted by rock physics modelling (RPM).
In this paper we will discuss the use of AI, polynomial and rockphysics models, for construction of elastic properties modelling logs in a tight sand reservoir (S velocity).
Water Conformance While Fracturing, Lessons Learned from 37 Jobs in the Oriente Basin of Ecuador
Authors: Izurieta Alvaro Javier , Padilla Wilson Leonardo , Barragan Linda Marielisa 
Published: June 2023

Abstract
This study describes water conformance fundamentals and the uses of relative permeability modifiers (RPM) in stand-alone water control, chemical diverter during acid stimulation, fluid loss control pill (FLCP), and, conformance while fracturing (CWF) treatments. Local examples or references are included when possible. CWF operations, the focus of this study, are explained in more detail including the different approaches on how to pump the HRPM stage depending on the area to be treated. The CWF design process is described with recommendations on candidate selection, core flooding tests, and, reservoir simulation practices.
A total of 37 jobs have been executed from 2014 to 2022. Production results (fluid rate and water cut) for these wells are presented. The data is analyzed by HRPM volume, reservoir, and, water cut variation after CWF. Wells with reduction or slightly increasing water cut are related to volumetric reservoirs, layered formations, and, reservoirs with weak aquifers.
Wells with high water cut located near water intrusion, high water saturation, or active waterdrive, a significant water cut increase was observed despite the use of high HRPM volume. This variability in results demonstrates the need for extensive simulation and laboratory testing before implementation to improve repeatability and hence the chance of success of a CWF job.
All the cases presented uses the pre-pad technique in matrix regime for CWF. Other pumping approaches (Minifrac, Pre-pad, Pad in fracture regime, or HRPM pumped during the entire fracture treatment) cases are recommended for higher water cut cases.
Finally, a proposed treatment to stimulate oil zones that requires hydraulic fracturing with an underlying water zone is described. This technique consists of a double barrier to control water production. A rigid gel disk at or slightly above the water-oil contact (WOC) and an extended CWF treatment in the oil zone.