bluuebunny/crossref_metadata_2025_split huggingface dataset:
Intelligent Completion in Laterals Becomes a Reality
Authors: Bouldin Brett , Turner Robert , Bellaci Isidore , Abu Ahmad Yousif , Dyer Steven , Oliveira Thales , Bin Al-Sheikh Ali 
Published: February 2017

Abstract
For many years, Saudi Aramco and Schlumberger have collaborated to develop a downhole system to merge multilateral technology and intelligent completions to create the world's first "smart laterals." This was the vision of Saudi Aramco's push to drive ever higher recovery factors, an extreme reservoir contact (ERC) approach to reservoir management. These wells can contain upward of 20 km of reservoir contact and require appropriate compartmentalization to ensure uniform heel to toe production throughout the reservoir.
Proactive reservoir control is crucial for the efficient sweep of heterogeneous formations. This paper describes a full-scale multi-lateral, multi-compartment intelligent completion where many new technologies were integrated and demonstrated: Well construction and deployment practices to allow electrical umbilicals to be branched into laterals using inductive couplers.Deployment of revolutionary low power infinite position electrical flow control valves.Validation of a fully integrated production monitoring system providing direct downhole measurements of pressures, temperatures, flow rates, and water cut for each compartment.Integration of the surface acquisition and monitoring system with production SCADA to provide real-time downhole production information and health status.
The ability to finely control downhole flow, measured directly at the reservoir face, has changed the way the industry will approach reservoir management. The sensing system has been validated with continuous compartment Productivity Index (PI), and multirate testing without shutting in the well. The SCADA integration allows a real-time management function where a compartment can be controlled to a target flow rate or draw down directly without resorting to traditional well system models to estimate choke orifice settings.
This paper highlights the development, installation, and validation of this new ERC well system and identifies some of the immediate production impacts emerging from this level of visibility and control at the formation face.
Seismic-Based Detection of Stratigraphic Traps and Carbonate Mounds
Authors: Alsulami Sulaiman , Ameen Mohammed 
Published: February 2017

Abstract
Tectonostratigraphic analysis using 3D seismic interpretation calibrated with borehole data was conducted as part of exploration effort and enabled the prediction of mid-Cretaceous depositional facies and reservoir architecture. The study helped to identify areas with hydrocarbon potential, within the Mauddud Member of the mid-Cretaceous Wasia Formation.
Based on seismic stratigraphy and facies interpretation, in conjunction with structural restoration, stratigraphic architectural patterns were identified as complex carbonate mounds formed in a back-shelf setting. The carbonate mound architecture within the Mauddud Member exhibits high-amplitude discontinuous reflectors, truncation of clinoforms, and stratigraphic-dipping reflection patterns. Several styles of carbonate mounds were identified, including carbonate clinoforms prograding towards the southeast and carbonate build-ups developed as isolated lenses.
Structural restoration is used to verify the syndepositional paleo-highs that are interpreted to be carbonate mounds. The carbonate clinoform dip-magnitudes as observed in borehole images are higher than the regional bedding dip. Clinoform dip-azimuth is similar to the 3D seismic observations.
Application of Dynamic Temperature Modeling for Planning High Temperature Well
Authors: Suryadi Hendrik , Bolchover Paul , Xin Chen , Jun Azrin Soh , Kurnia Agus Ziyad , Whitmore Andrew 
Published: February 2017

Abstract
The ability to drill wells in high temperature formations is limited by the temperature specification of the available drilling tools. Most drilling tools currently have a temperature rating of 150°C, and there is an ongoing effort to develop tools with a higher temperature rating. A parallel effort is to develop the modeling capability to simulate the complex downhole temperature environment, to allow engineer to understand the temperature effect on drilling operation and better manage the temperature-related risks.
Many high temperature wells are planned in an extremely conservative manner. The engineer will rely on the formation temperature measured in offset wells to determine temperature gradient of the planned well. This temperature gradient will be used as a reference for all aspects of the well design, including drilling tools selection, cementing design, etc. In reality, there are many factors which affect the actual downhole temperature experienced by the tools. There is a complex interaction between heating from the formation, drilling fluid circulation, and the mechanical action of drilling tools. There are many forms of energy loss contributing to the downhole temperature, such as mechanical friction, rock cutting, and fluid friction.
A new state-of-the-art dynamic temperature model is developed to simulate downhole conditions in order to precisely predict downhole temperatures. This paper will explain the development of dynamic temperature modeling and how the model being used to plan high temperature well. The paper will also present several case studies where the modeling was used on planning high temperature well and comparison between model results and actual downhole temperature measurements.
Effect of Drillstring Vibration Cyclic Loads on Wellbore Stability
Authors: Khaled Mohamed Shafik , Shokir Eissa M 
Published: February 2017

Abstract
Wellbore instability resulted in the largest percentage of non-productive time (NPT) during drilling stage in oil industry. Wellbore instability during drilling includes: wellbore pack-off, excessive torque and drag, blowout, stuck pipe and other related well problems. Many studies assumed that wellbore instability problems were due to physical and chemical interactions between rocks and drilling fluid; and neglected impact of drillstring vibration on wellbore stability. Drillstring vibration is usually mitigated while drilling not for wellbore stability issues; but to prevent drillstring fatigue and downhole tools failure by not exceeding vibration operation limits for drillstring. This work aims to develop a new approach studies the impact of drillstring vibration on wellbore stability by analyzing different rock failure mechanisms can happen to wellbore due to drillstring vibration; and computing drillstring vibration limits (acceleration values) that can collapse wellbore.
Rock failure mechanisms and drillstring dynamic behavior while vibration was studied to understand consequences happened due to drillstring collision with wellbore. Authors innovated a new model to predict drillstring vibration hotspots values that can collapse wellbore.
Results show that drillstring vibration can collapse wellbore by three failure mechanisms: a- when drillstring vibration applies stresses above rock strength, rock compressive failure will take place; b- if drillstring vibration applies repeated cyclic loads on rock continuously; rock fatigue will occur; c- when cyclic loads on rock are not strong enough to cause rock failure; rock fatigue will reduce rock strength and lead to rock shear failure. Model computes drillstring acceleration values that can fail wellbore by these failure mechanisms; and calculates mud weight needed to prevent rock shear failure before and after reduction in rock strength due to rock fatigue.
Model outputs must be compared with drillstring vibration operation limits; and the lower value must be used as a boundary limit for drillstring vibration while drilling to prevent wellbore collapse and drillstring failure. These will make model results used as an early detector for harmful drillstring vibration shocks on wellbore.
A Novel Compact and Controllable Inline Separator: Field and Laboratory Tests
Authors: Voogd Yoerik de , Liew Raoul , Bos Johanna , Ruijter Martijn , Willink Cornelis Tjeenk 
Published: February 2017

Abstract
The demand for cheaper oil and gas production is ever increasing. Because of this, the market forces the processing equipment, e.g. separators, to become more efficient, compact, and lighter in weight. At the same time, the flexibility of operation of this equipment cannot be compromised. A compact, controllable inline separator, the "SwirlSep", is developed to support the oil and gas production to be more efficient and cost effective.
Field tests with the SwirlSep as a demister/desander are presented. The tests primarily focus on the removal of liquids and sand from a gas well during well cleaning. Results show that the removal of liquids varies between 98% and over 99% at very low (0.6%) and higher (20%) pressure drop, respectively. The overall efficiency of solids removal was determined to be 99.4%. Impressive is that results were achieved with flows significantly lower compared to its design capacity (down to less than 21%).
Computational fluid dynamics (CFD) simulations and laboratory experiments focus on flow stability and the performance of the SwirlSep during bulk separation. A CFD of bulk separation using the SwirlSep, in combination with experimental observations showed that the SwirlSep is a suitable technology to have optimum gas and liquid quality; not only as demister and desander, but also as bulk gas/liquid separator.
Seismic-Airborne TEM Joint Inversion and Surface Consistent Refraction Analysis: New Technologies for Complex Near Surface Corrections
Authors: Colombo Daniele , McNeice Gary , Rovetta Diego , Turkoglu Ersan , Sandoval-Curiel Ernesto , Sena Armando 
Published: February 2017

Abstract
We describe two novel technologies developed for seismic characterization of the complex near surface in Saudi Arabia. Current exploration efforts in the Arabian Peninsula are directed at the identification of low-relief structures and stratigraphic traps where most of the major structures (giant and supergiant reservoirs) have been already identified and are under production. The near surface in arid environments such as Saudi Arabia is affected by anomalies caused by karsting, sand dunes and wadis that introduce severe distortions in seismic wave propagation into the subsurface. These distortions cause apparent false structures in the final stacked image that can be erroneously drilled. Two technologies were recently developed by Saudi Aramco to be able to obtain reliable seismic images of deep and low-relief reservoirs. The technologies consist of helicopter-borne transient electromagnetics (HTEM) in joint inversion with seismic, and a novel surface consistent solution for statics using refracted waves named pQC (from the QC analysis of first break (FB) traveltimes: picks). The TEM technology is based on the transmission of a primary electromagnetic signal through a large moment magnetic dipole source and the reception of a secondary magnetic field deriving from the interaction of the primary field with the earth. The acquisition is performed with a helicopter allowing to acquire data with exceptional spatial density and speed. The velocity modeling of the near surface is obtained by in-house developed joint inversion algorithms allowing to integrate the high resolution TEM information into the velocity reconstruction of the near surface. The pQC technology consists of a surface consistent statics solution using refraction data. The high-resolution time delays are calculated by means of cross-correlation of early arrival waveforms that are inverted for surface consistent time delays. This method provides detailed images of the near surface time corrections in a fraction of the time needed by conventional workflows currently used in the seismic industry. The two newly developed technologies are applied to a complex wadi structure in central Saudi Arabia where conventional seismic data analysis approaches fail. The 3D TEM seismic joint inversion solves the long wavelength of the wadi structure while the high-resolution/medium wavelength time correction is obtained by pQC. The combined time corrections of the near surface enable accurate imaging of deep structures important for reserves evaluation. The joint inversion technology with airborne TEM acquisition systems and the surface consistent refraction analysis (pQC) provide innovative solutions for imaging low-relief structures in exploration and field development applications.
A System Dynamics Approach on Oil Market Modeling with Statistical Data Analysis
Authors: Rafieisakhaei Mohammadhussein , Barazandeh Babak , Afra Salar 
Published: February 2017

Abstract
Oil price is a determinant factor in many economic equations. The consistent growth of oil demand indicates the importance of petroleum products in the economic growth of both developing and developed countries. The new market conditions after the introduction of the shale oil and the extent of its influence on determining the oil price indicates a requirement for new oil market models that include new parameters. In this paper, based on the system dynamics methodology, we provide an updated model of the supply and demand of the oil market to explain the market trends. Our model provides the causal relations between the major components of the market including the determinants of the supply and demand. We divide the supply into the OPEC, non-OPEC and US producers. Further, we have extracted the supply of Iran, Saudi Arabia, Libya, Venezuela, and Iraq in the OPEC, and Russia and Syria in the non-OPEC categories in order to be able to further detail the effects of specific events that influenced their corresponding productions. We also provide a detailed case study of the major market events after 2010 that have had consequences on the oil market. Finally, we train the model with the 2014 and 2015 data and simulate and validate the model for 2016 to support our model's performance.
An evaluation model of educational quality assurance at junior high schools
Authors: Sugiyanta Sugiyanta , Soenarto Soenarto 
Published: February 2017

The study was to develop an appropriate evaluation model of quality assurance (QA) for evaluating the programs of the educational QA (EQA) at junior high schools. The study was a research and development study that referred to the steps developed by Borg and Gall. The results of the study show that the evaluation model of EQA in junior high schools consist of the implementation of QA system and the performance of QA. The constructs for the instrument of QA system implementation consisted of planning, implementation, monitoring and evaluation, and the act of revision is based on the exploratory factor analysis at the significance level of 0.000. The constructs for the instrument of EQA performance consisted of: resource development; program and activity development; participation, satisfaction, knowledge change, attitude change, and behavior change of school community; social, economic, and school environmental development based on the exploratory factor analysis at the significance level of 0.000. The feasibility of the evaluation model is in a good category based on experts’, users’, and practitioners’ judgment and the evidence found in the field testing.
Synthesis and Characterization of Alumina Precursors Derived from Aluminum Metal through Electrochemical Method
Authors: Ginting Eva Marlina , Bukit Nurdin 
Published: February 2017

This study investigated the use of the electrochemical method to prepare alumina (a-Al2O3) from aluminum metal. The a-Al2O3 precursor was calcined at 110 °C for six hours and then characterized using Fourier Transform Infrared (FTIR) spectroscopy, Particle Size Analysis (PSA), X-Ray Diffraction spectroscopy (XRD), and Scanning Electron Microscopy (SEM). To study transformation of the precursor into α-Al2O3, three samples were sintered at 400, 800, and 1200 °C, respectively and they were characterized. The most interesting result obtained was the transition of AlOOH and β-Al(OH)3 into γ-Al2O3 at low temperatures (400 to 800°C), followed by transformation of γ-Al2O3 into a-Al2O3 at high temperature (1200 °C). The overall results obtained demonstrated that electrochemical method is a potential alternative for production of α-Al2O3, which can be achieved in practically pure phase at sintering temperature at 1200 °C.
PENGEMBANGAN BAHAN AJAR METODE PEMBELAJARAN BAHASA DAN SASTRA INDONESIA BERBASIS PEMBELAJARAN KOOPERATIF JIGSAW UNTUK MENINGKATKAN PEMAHAMAN DAN KEMAMPUAN APLIKATIF MAHASISWA
Authors: Nurjaya Gede 
Published: February 2017

Tujuan utama penelitian ini adalah menghasilkan bahan ajar Metode PembelajaranBahasa dan Sastra Indonesia yang mampu meningkatkan pemahaman dan kemampuanaplikatif mahasiswa. Untuk tujuan itu, rancangan penelitian yang digunakan adalahrancangan penelitian dan pengembangan (R&D). Penelitian ini membutuhkan waktu duatahun untuk menghasilkan produk yang siap pakai. Pada tahun kedua ini adalah uji coba efektivitas penggunaan bahan ajar. Hasilnyaadalah sebagai berikut ini. (1) Prestasi mahasiswa setelah diajarkan dengan menggunakanbahan ajar yang telah disusun berada pada kategori baik dengan rata-rata skor 79,42. Skoruntuk pemahaman sebesar 81,17 dalam kategori baik, lebih tinggi dibandingkan skorkemampuan aplikatif yang sebesar 76,8 pada kategori baik juga. (2) Respon mahasiswaterhadap penggunaan bahan ajar dalam pembelajaran adalah positif dengan rata-rata 4,43pada skala 5. (3) Kendalaa yang dihadapi oleh mahasiswa saat penggunaan bahan ajartersebut dalam pembelajaran adalah kekurang waktu dan ada beberapa bagian bahan ajaryang sulit dipahami karena redaksinya.
PENGEMBANGAN MODEL TUTOR BIMBINGAN KONSELING SEBAYA (PEER COUNSELING) UNTUK MENGATASI MASALAH MAHASISWA FAKULTAS ILMU PENDIDIKAN UNDIKSHA
Authors: Suranata Kadek 
Published: February 2017

Penelitian ini bertujuan untuk mengembangkan model tutor bimbingan konseling teman sebaya untuk membantu meminimalisasi masalah yang dialami mahasiswa di Fakultas Ilmu Pendidikan Undiksha Singaraja. Secara lebih rinci tujuan penelitian ini adalah: (1) mengidentifikasi masalah-masalah yang dialami mahasiswa FIP Undiksha, dan (2) mengetahui validasi teoretik rumusan model. Penelitian ini menggunakan pendekatan pengembangan (research & develovement) yang terdiri dari tujuh langkah pokok yaitu, (1) research and information collecting. (2) pllaning. merumuskan rencana penggunaan hasil penelitian, sasaran atau pengguna hasil penelitian, dan deskripsi komponen-komponen hasil penelitian serta, (3) develop preliminary form of product yaitu menyusunan draf uji coba hasil penelitian di lapangan (4) preliminary field testing and product revition yaitu melakukan evaluasi hasil penelitian untuk mengetahui apakah hasil penelitian dapat dikembangkan atau tidak (5) main field test and product revision yaitu melakukan uji kembali hasil-hasil yang telah dicapai, (6) operational field test and product revision yaitu mengkaji apakah hasil penelitian benar-benar dapat digunakan oleh praktisi pendidikan sebagai pelaksana dan pengembang pendidikan (7) dessemination implementastion and institutionalization, implementasi hasil-hasil penelitian melalui proses desiminasi di lembaga. Populasi penelitian adalah mahasiswa di Fakultas Ilmu Pendidikan Undiksha yang ditentukan dengan teknik proposional cluster random sampling serta pakar bimbingan konseling. Untuk mengidentifikasi masalah- masalah mahasiswa menggunakan instrumen alat ungkap masalah (AUM) jenis PTSDL seri mahasiswa selanjutnya data dianalisis menggunakan program komputer analisis AUM PTSDL versi 2011. Analisis validasi teoretik melibatkan dua orang pakar bimbingan konseling, data validasi dianalisis menggunakan teknik Geregory. Hasil penelitian menunjukkan: (1) masalah yang paling dirasakan mahasiswa FIP Undiksha berdasarkan hasil analisis AUM PTSDL adalah terkait dengan penguasaan keterampilan belajar dengan skor mutu 47,2 atau pada kategori rendah sedangkan rata-rata masalah yang dialami pada aspek keterampilan belajar ini adalah 22,5 atau pada kategori sedang. (2) hasil validasi model menggunakan nilai R sebesar 0,90 yang dapat bermakna bahwa model tutor bimbingan konseling teman sebaya layak dikembangkan lebih lanjut.
PENGINTEGRASIAN MEDIA PEMBELAJARAN VIRTUAL BERBASIS GEOGEBRA UNTUK MENINGKATKAN KETERLIBATAN DAN PEMAHAMAN KONSEP MATEMATIKA SISWA KELAS VIII SMPN 6 SINGARAJA
Authors: Suweken Gede 
Published: February 2017

Penelitian ini adalah penelitian tindakan kelas yang dimaksudkan untuk meningkatkan motivasi dan pemahaman siswa terhadap konsep-konsep matematika. Subjek penelitiannya adalah siswa kelas VIII A SMP Negeri 6 Singaraja yang jumlahnya 31 orang. Adapun tindakan yang diberikan kepada siswa adalah berupa penggunaan media pembelajaran berbasis Geogebra dalam pembelajaran matematika. Tindakan yang diberikan berhasil meningkatkan prestasi belajar siswa dari 55,6 menjadi 71,2. Tindakan juga berhasil meningkatkan motivasi belajar siswa dalam pembelajaran yang tercermin dari keaktifan mereka selama pembelajaran berlangsung.
IMPLEMENTASI SIOP BERBANTUAN MATHLET UNTUK MENINGKATKAN KUALITAS PEMBELAJARAN MATEMATIKA BILINGUAL
Authors: Suweken Gede 
Published: February 2017

Sebenarnya penyelenggaraan Rintisan Sekolah Bertaraf Internasional (RSBI) merupakan salah satu upaya pemerintah untuk meningkatkan kinerja sekolah untuk mewujudkan tujuan pendidikan nasional. Selain itu, sekolah-sekolah dengan predikat RSBI juga diharapkan mampu menjadi wadah bagi siswa-siswa berkualitas dalam mempersiapkan diri agar mampu bersaing di era global. Karena tuntutan yang tinggi tersebut, maka sekolah yang biasanya ditunjuk menjadi sekolah penyelenggara RSBI adalah sekolah dengan siswa-siswa yang unggul, terutama secara akademik Ditinjau dari tujuan mulia ini, maka seharusnyalah best practice yang sudah terlaksana selama ini di sekolah-sekolah mantan RSBI diteruskan baik dengan maupun tanpa predikat RSBI. Namun demikian, kenyataan menunjukkan bahwa kualitas pembelajaran matematika pada sekolah-sekolah tersebut masih jauh dari harapan. Penggunaan bahasa Inggris dalam pembelajaran juga masih sangat terbatas. Sehingga diperlukan suatu inovasi pembelajaran yang mampu memadukan kedua tuntutan ini, yaitu bagaimana kita menyelenggarakan pembelajaran yang tidak hanya mampu meningkatkan penguasaan bidang studi tetapi juga penguasaan bahasa. Salah satu upaya yang bisa ditempuh adalah dengan mengimplementasikan SIOP dalam pembelajaran. Mengingat keterbatasan baik guru maupun siswa dalam pelaksanaan SIOP ini, maka pembelajaran harus dibantu dengan pemanfaatan media sehingga bagi siswa yang terkendala memahami konsep secara verbal bisa memahaminya melalui eksplorasi visual pada mathlet.