bluuebunny/crossref_metadata_2025 huggingface dataset:
Peran Kepemimpinan Tokoh Informal terhadap Kemandirian Pemuda Sekitar Hutan di Kabupaten Bogor
Authors: Haryanto Yoyon , Suyadi
Published: February 2022

Youth around the forest in general is still very trusting, submissive and obedient to their informal leader. Independence of youth around the forest can be measured from the power strain, competitiveness and sanding. The purpose of this study was to analyze the factors that influence the leadership role of informal leaders, youth independence around the forest, and the leadership role of informal leaders on youth independence around the forest. The research was conducted from October to November 2020, located in the village of Pasir Madang, Sukajaya Subdistrict, Bogor Regency with a sample size of 50 youth. Data were analyzed using path analysis (path analysys). The results of this study are the factors that directly affect the leadership role of informal figures are the individual factors of informal figures, the independence factor of youth around the forest is influenced by the leadership role of informal figures and individual factors of informal figures, and the leadership role of informal figures significantly affects the independence of youth around the forest. Extension support by the government tarhadap informal leaders need to be improved, so that the informal leaders can be more active, innovative, and also care about the community
Perbaikan Manajemen Reproduksi Sapi Potong Peternakan Rakyat di Kecamatan Pakis
Authors: Sholikah Nisa'us , Sumartono
Published: February 2022

Beef cattle are ruminants that have economic value for people's lives in rural areas. The problem that is often faced by beef cattle farmers is the farmer's knowledge that is still lacking because they still rely on experience without being based on correct and precise technical knowledge. The aim of the program was to increased the knowledge of traditional farmers about reproductive management so as to increase the productivity of beef cattle. The target audience for this activity was traditional farmers who maintain productive female beef cattle in Pakis Subdistrict. The method used in the community service program was counseling on reproduction management and application of recording. The results of this community service activity are manifested in an increase in the knowledge of traditional farmers in Pakis Subdistrict and the motivation to improve the management of the reproduction of beef cattle being raised based on the analysis of the results of the pre-test and post-test. It is hoped that the improvement of reproductive management can help increase productivity and improve the economy of traditional farmers if it is implemented correctly and appropriately.
Sumber dan Subjek Artikel Ilmiah pada Jurnal Penelitian Pertanian Tanaman Pangan
Authors: Wilis Jelita
Published: February 2022

Peneliti dituntut membuat karya tulis ilmiah (KTI) sebagai salah satu syarat mempertahankan eksistensi sebagai pejabat fungsional peneliti. Pusat Penelitian dan Pengembangan Tanaman Pangan (Puslitbangtan) memiliki jurnal ilmiah primer yang berjudul Jurnal Penelitian Pertanian (Jurnal PP) Tanaman Pangan yang sudah terakreditasi untuk menampung KTI dari peneliti di lingkungan sendiri maupun institusi lain. Pengkajian ini bertujuan untuk mengetahui sumber dan subjek artikel hasil penelitian serta produktivitas peneliti menulis KTI pada Jurnal PP Tanaman Pangan pada periode 2007-2016. Pengkajian dilakukan di Perpustakaan Puslitbangtan pada bulan Agustus 2018. Hasil pengkajian menunjukkan terdapat 273 KTI yang terbit pada Jurnal PP Tanaman Pangan periode 2007-2016. Sebanyak 197 KTI (73,16%) di antaranya bersumber dari peneliti di lingkungan Puslitbangtan dan sisanya dari institusi penelitian lain dan perguruan tinggi. Artikel didominasi oleh komoditas padi (44,32%), jagung (19,78%), dan kedelai (19,05%). Proporsi artikel berdasarkan disiplin ilmu didominasi oleh pemuliaan tanaman (37%), diikuti oleh agronomi (14,65%) dan ekofisiologi (14,28%). Dikaitkan dengan jumlah peneliti aktif pada tahun 2015 sebanyak 173 orang maka rasio peneliti dan KTI yang terbit pada Jurnal PP Tanaman Pangan rata- rata 0,12 KTI per orang per tahun. Angka ini menunjukkan rendahnya produktivitas peneliti menulis KTI. Oleh karena itu, peneliti perlu didorong untuk menulis KTI melalui pelatihan dan pendampingan penulisan dengan melibatkan profesor riset, pengelola publikasi ilmiah, dan pustakawan profesional.
Analisis Literasi Informasi Pustakawan Kementerian Pertanian di Jawa Barat dan DKI Jakarta
Authors: Kristiyaningsih Erriani
Published: February 2022

Kemampuan literasi informasi pustakawan lingkup Kementerian Pertanian perlu terus ditingkatkan terutama dalam mengevaluasi dan memanfaatkan informasi serta cara mengomunikasikan informasi kepada pengguna perpustakaan. Pustakawan lingkup Kementerian Pertanian perlu memiliki kemampuan literasi informasi karena pustakawan memegang peranan penting dalam penyebaran informasi terbaru guna memenuhi kebutuhan informasi pengguna. Namun, kenyataannya pustakawan lingkup Kementerian Pertanian masih memiliki keterbatasan dalam literasi informasi dan terdapat perbedaan kompetensi literasi informasi antara pustakawan ahli dan pustakawan terampil. Pengkajian ini dilakukan untuk mengetahui kemampuan literasi informasi pustakawan ahli dan pustakawan terampil di lingkup Kementerian Pertanian. Pengkajian dilakukan terhadap 72 pustakawan dengan menggunakan analisis deskriptif dan uji beda. Hasil pengkajian menunjukkan bahwa kemampuan literasi informasi pustakawan ahli lebih baik dibandingkan dengan pustakawan terampil dalam hal mengenali informasi, mengidentifikasi informasi, mengorganisir informasi, serta menggabungkan dan membangun informasi. Sementara kemampuan literasi informasi pustakawan terampil lebih baik daripada pustakawan ahli dalam hal membangun strategi untuk menemukan informasi, mencari dan mengakses informasi, serta membandingkan dan mengevaluasi informasi.
Produktivitas dan Literasi Peneliti Badan Tenaga Nuklir Nasional (BATAN) dalam Menulis Karya Tulis Ilmiah
Authors: Noer’Aida Noer’Aida
Published: February 2022

Produk akhir seorang peneliti adalah karya tulis ilmiah (KTI) yang diterbitkan dalam publikasi nasional maupun internasional. Artikel yang terbit pada publikasi yang terindeks di Scopus merupakan salah satu capaian tertinggi bagi peneliti. Kualitas KTI seharusnya berbanding lurus dengan kemampuan literasi informasi yang dapat diukur melalui kemutakhiran, jenis, dan jumlah acuan yang digunakan. Tujuan kajian adalah untuk mengetahui produktivitas dan tingkat literasi peneliti Badan Tenaga Nuklir Nasional (BATAN) melalui KTI yang terindeks di Scopus. Metode yang digunakan adalah bibliometrik dengan analisis sitasi dan deskriptif evaluatif. Populasi kajian adalah KTI peneliti BATAN yang terindeks di Scopus sejak tahun 2013 sampai 2017 yaitu sebanyak 305 judul. Sementara sampel kajian adalah KTI peneliti BATAN sebagai penulis pertama sebanyak 149 judul dengan jumlah acuan yang digunakan 2.937 judul. Hasil kajian menunjukkan bahwa produktivitas KTI peneliti BATAN meningkat pada kurun waktu tersebut. Tingkat literasi informasi peneliti berdasarkan kemutakhiran daftar acuan yang digunakan adalah lebih dari 5 tahun (60,84%). Jenis sumber acuan yang paling banyak digunakan adalah jurnal ilmiah (72,45%). Jumlah acuan yang paling banyak digunakan berkisar antara 10-20 judul dan lebih  dari  20 judul (83,22%). Banyaknya jumlah acuan yang digunakan menunjukkan bahwa secara umum tingkat literasi peneliti BATAN masuk dalam kategori baik, namun belum optimal. Untuk lebih meningkatkan kemampuan literasi informasi peneliti, pustakawan dapat mengoptimalkan layanan dengan memberikan pelatihan literasi informasi bagi peneliti.
ANALISIS INFORMASI PATEN LEMBAGA ILMU PENGETAHUAN INDONESIA TERSERTIFIKASI TAHUN 1991-2018
Authors: Wijaya Didik Prata
Published: February 2022

Kekayaan intelektual merupakan aset berharga yang perlu dikelola secara terencana dan si stematis agar dapat terl indungi dan bermanfaat bagi masyarakat, salah satunya ialah melalui paten. Lembaga Ilmu Pengetahuan Indonesia (LIPI) merupakan salah satu lembaga penelitian yang menghasilkan paten. Pengkajian ini bertujuan untuk mengetahui (1) jumlah paten LIPI yang tersertifikasi, (2) jenis/kategori paten, (3) satuan kerja LIPI yang paling banyak menghasil kan paten terserti fikasi , (4) jumlah inventor paten tersertifikasi, (5) perbandingan jumlah paten tersertifikasi dan inventor, dan (6) jumlah rata-rata klaim per paten. Objek pengkajian adalah paten LIPI yang tersertifikasi pada tahun 1991-2018. Data paten diperoleh secara online melalui pangkalan data Information Tracer of Intellectual Property and Document Accountability Inquiry (INTIP DAQU). Data yang diperoleh disajikan dalam bentuk tabel dan dianalisis secara deskriptif. Hasil pengkajian menunjukkan bahwa LIPI memiliki 158 judul paten tersertifikasi pada tahun 19912018 dengan jenis paten terbanyak berupa proses/metode, yakni 69 judul. Paten tersertifikasi terbanyak dihasilkan pada tahun 2010 dan Pusat Penelitian Fisika merupakan satuan kerja LIPI penghasil paten tersertifikasi terbanyak dengan 30 paten. Berdasarkan gender, inventor laki-laki sebanyak 416 orang dan inventor perempuan 229 orang. Jumlah klaim setiap paten terbanyak terdapat pada tahun 2018 yaitu 200 klaim, sedangkan jumlah klaim paling sedikit pada tahun 1994 dan 1996 yaitu 0 klaim. Jumlah rata-rata klaim per paten tertinggi terdapat pada tahun 2018 (28,5 klaim per paten) dan terendah pada tahun 1994,1995,1996, dan 1997 yaitu 0 klaim per paten.
IDENTIFIKASI KOLEKSI ANTIKUARIAT INDONESIANA DI WEBSITE PERPUSTAKAAN UNIVERSITAS LEIDEN
Authors: Nurhayati Muthia
Published: February 2022

Jumlah koleksi antikuariat Indonesiana di Perpustakaan Universitas Leiden mencapai lebih dari separuh yang dimiliki Perpustakaan Nasional Republik Indonesia (Perpusnas RI). Padahal fungsi Perpusnas RI sebagai perpustakaan deposit merupakan keniscayaan untuk menyimpan seluruh karya cetak dan karya rekam yang terbit di Indonesia, salah satunya adalah koleksi Indonesiana. Koleksi antikuariat Indonesiana termasuk dalam benda cagar budaya karena memiliki arti khusus bagi sejarah, ilmu pengetahuan, pendidikan, agama, dan/atau kebudayaan, juga mempunyai nilai budaya bagi penguatan kepribadian bangsa. Pengkajian ini bertujuan untuk mengidentifkasi koleksi antikuariat Indonesiana yang dimiliki Perpustakaan Universitas Leiden melalui website perpustakaan tersebut (https://www.library.universiteitleiden.nl/). Hasil pengkajian menunjukkan bahwa koleksi antikuariat Indonesiana di website Perpustakaan Universitas Leiden terdapat dalam menu Special Collections, submenu Digital Collections dan Unlock the Asian Collections. Pada bagian Digital Collections, dari 69 topik koleksi, yang termasuk koleksi antikuariat Indonesiana mencapai 21 buah. Pada Asian Collections, terdapat enam topik koleksi antikuariat Indonesiana. Perpustakaan Universitas Leiden memiliki komitmen yang tinggi dalam program digitasi koleksi Asia.
KAJIAN PUBLIKASI DAN IMPLEMENTASI SERAH SIMPAN PUBLIKASI LINGKUP KEMENTERIAN PERTANIAN
Authors: Iskak Penny Ismiati , Suryantini Heryati , Andriaty Etty , Kusmayadi Eka , Pertamasari Riko Bintari
Published: February 2022

Pusat Perpustakaan dan Penyebaran Teknologi Pertanian (PUSTAKA) merupakan perpustakaan khusus di bawah Kementerian Pertanian yang berperan sebagai pusat ilmu pengetahuan pertanian nasional. Oleh karena itu, PUSTAKA terus memperkaya koleksi melalui pembelian, pertukaran, hadiah/hibah, dan serah simpan dari UK/UPT Kementerian Pertanian berdasarkan Surat Keputusan Menteri Pertanian No. 433/2003 tentang Pengiriman Publikasi, Dokumentasi dan Informasi Bidang Pertanian. Namun, penghimpunan koleksi melalui serah simpan belum optimal. Pengkajian ini bertujuan untuk mengetahui penerbitan publikasi di UK/UPT Kementerian Pertanian, implementasi SK Menteri Pertanian Nomor 433/2003, dan kendala yang dihadapi. Populasi pengkajian adalah pengelola publikasi di UK/UPT Kementerian Pertanian. Pengumpulan data dilakukan melalui wawancara kepada 86 pengelola publikasi. Hasil pengkajian menunjukkan hampir semua UK/UPT (99%) menerbitkan publikasi yang berupa laporan tahunan (95%), leaflet (86%), petunjuk teknis (72%), buletin (52%), dan majalah ilmiah 25%. UK/UPT yang menerbitkan publikasi dalam media tercetak sebanyak 49%, media tercetak dan digital 48%, dan media digital 3%. Mayoritas responden (94%) menyatakan publikasi yang diterbitkan disebarkan ke pengguna. Sebanyak 87% UK/UPT mengirimkan publikasi ke perpustakaan internal dan lebih dari separuh responden (53%) menyatakan publikasi dapat diakses secara online. Implementasi serah simpan publikasi belum berjalan optimal karena baru 34% UK/UPT yang mengirimkan publikasi ke PUSTAKA. Kendala dalam implementasi serah simpan publikasi yaitu kurangnya pengetahuan pengelola publikasi tentang kewajiban mengirimkan terbitan ke PUSTAKA dan terbatasnya biaya pengiriman. Berdasarkan hasil kajian perlu dilakukan sosialisasi kepada UK/UPT mengenai kewajiban serah simpan publikasi dan penyempurnaan/revisi surat keputusan Menteri Pertanian No. 433/ 2003 sesuai dengan perubahan peraturan yang ada.
ANALISIS BIBLIOMETRIK PUBLIKASI PERTANIAN TERBITAN IAARD PRESS
Authors: Suryantini Heryati , Hardianti Sri
Published: February 2022

Penyebarluasan informasi hasil-hasil penelitian pertanian dapat dilakukan melalui publikasi. Publikasi dinilai sangat efektif dalam penyebarluasan hasil penelitian karena dapat menjangkau pengguna yang lebih luas. IAARD Press didirikan sebagai penerbit pemerintah yang profesional untuk menerbitkan publikasi terkait iptek pertanian yang bermutu. Perkembangan suatu publikasi pada suatu bidang tertentu dapat diketahui dengan menggunakan pendekatan bibliometrik. Pengkajian ini dilakukan untuk menganalisis publikasi terbitan IAARD Press dengan menggunakan pendekatan bibliometrik. Hasil pengkajian menunjukkan bahwa selama periode 2013 – 2018, IAARD Press telah menerbitkan sebanyak 313 publikasi dari beberapa unit kerja lingkup Kementerian Pertanian dengan rata-rata sebesar 52 judul per tahun. Sekretariat Badan Litbang Pertanian merupakan unit kerja yang paling banyak menghasilkan publikasi yang diterbitkan oleh IAARD Press, yaitu 73 judul, diikuti BBP2TP (38 judul), dan BBSDLP (36 judul). Pertanian umum merupakan subsektor yang paling banyak ditulis (70 judul), yaitu mencakup pembangunan pertanian secara umum, program strategis dan kebijakan pembangunan pertanian dan hasil-hasil penelitian pertanian mendukung berbagai program strategis pembangunan pertanian. Selanjutnya subsektor tanah dan iklim sebanyak 54 judul, tanaman pangan 43 judul, tanaman perkebunan 43 judul, dan peternakan 28 judul. Subjek yang paling banyak ditulis adalah mengenai ekonomi dan kebijakan pembangunan (49 judul), diikuti budi daya tanaman (31 judul), ekonomi dan kebijakan nasional mengenai pertanian (25 judul), dan genetika dan pemuliaan tanaman (25 judul). Jumlah penulis pada publikasi terbitan IAARD Press periode 2013-2018 sebanyak 352 penulis dengan jumlah publikasi yang ditulis oleh penulis berkisar 1-34 judul. Penulis yang paling produktif adalah Andi Amran Sulaiman dengan 34 judul publikasi.
IDENTIFIKASI MODAL SOSIAL LAYANAN PERPUSTAKAAN DI PERPUSTAKAAN DAN PENGETAHUAN PERTANIAN DIGITAL
Authors: Iskak Penny Ismiati , Andriyani Juznia
Published: February 2022

Modal sosial merupakan bagian penting dalam pengembangan perpustakaan. Pengkajian ini bertujuan untuk mempelajari modal sosial dalam layanan informasi Perpustakaan dan Pengetahuan Pertanian Digital (P3D). Pengkajianini menggunakan pendekatan kualitatif menggunakan metode etnografi untuk mengidentifikasi dan memahami makna terbentuknya modal sosial pada layanan perpustakaan. Modal sosial dalam layanan perpustakaan di P3D meliputi kepercayaan, jaringan dan norma. Di antara ketiga unsur tersebut, tidak ada yang mendominasi. Norma perlu ditekankan lagi agar kegiatan perpustakaan berlangsung kondusif. Layanan perpustakaan mampu membentuk kerjasama antara perpustakaan dengan lembaga lain dimana pemustaka bernaung. Perpustakaan menjadi tempat untuk berdiskusi dan melakukan kerja kelompok bagi pemustaka pelajar. Perpustakaan juga menyediakan tempat yang nyaman bagi peneliti untuk menyelesaikan tugas. Disarankan agar norma dapat ditingkatkan melalui sosialisasi peraturan secara lebih intensif dengan membuat alat promosi yang diletakkan pada tempat strategis serta menerapkan peraturan dan meningkatkan komunikasi dengan pemustaka. Kepercayaan pemustaka dapat lebih ditingkatkan dengan penyediaan fasilitas-fasilitas lain yang memudahkan pengguna
Kalibrasi Arah Kiblat Hotel di Kabupaten Pamekasan
Authors: Hosen Hosen , Hasanah Hafidatul
Published: February 2022

Hotel atau penginapan yang menjadi tempat istirahat bagi pelancong seyogyanya memenuhi kriteria kenyamanan dalam hal ibadah. Terutama bagi umat Islam yang merupakan mayoritas penduduk Indonesia. Dalam melaksanakan ibadah seperti salat lima waktu, setiap muslim diwajibkan menghadap Kakbah di Mekah sebagai kiblatnya. Fenomena saat ini banyak hotel atau penginapan yang arah kiblatnya tidak ditentukan sesuai dengan kaidah ilmu falak/astronomi. Metode yang digunakan adalah kualitatif deskriptif dari sumber data yang dikumpulkan dengan cara wawancara terstruktur, observasi non partisipan dan studi dokumentasi. Hasilnya adalah, pertama; penentuan arah kiblat di kamar hotel di Kabupaten Pamekasan dilakukan berdasarkan insting/perasaan saja yang penting mengarah ke barat. Hal ini dilakukan oleh pihak pengelola hotel maupun kontraktor. Sehingga arah kiblatnya menyimpang dan tidak mengarah ke posisi Kakbah di Mekah. Kedua; kontraktor sebagai orang atau lembaga yang bertanggung jawab atas tersedianya sarana ibadah khususnya umat Islam seharusnya mengetahui cara menentukan arah kiblat yang benar sesuai kaidah ilmu falak/astronomi. Sehingga salat yang dilakukan pengunjung muslim memenuhi kriteria keabsahan sesuai dengan koridor fiqh. Apabila kontraktor tidak mengetahui cara menentukan arah kiblat, dapat menghubungi petugas yang sudah berpengalaman dibidang menentukan arah kiblat yang tersedia di masing-masing kabupaten/kota.
La lucha contra la pobreza en Marruecos: logros realizados. De la planificacióna la Iniciativa Nacional para el Desarrollo Humano
Authors: Laghdas Mohamed , Cejudo García Eugenio , Navarro Valverde Francisco Antonio
Published: February 2022

Tras su independencia política, en 1956, Marruecos se enfrentó a distintos problemas socioeconómicos. En este trabajo se aborda la política de desarrollo implementada en el país, especialmente, la relacionada con la lucha contra la pobreza y las desigualdades. Se analiza la política de desarrollo desde los primeros años de la independencia hasta 2004. Los escasos resultados obtenidos obligaron a afrontar tales problemas a través de un nuevo enfoque de desarrollo. Así, a partir de 2005, se puso en marcha la Iniciativa Nacional para el Desarrollo Humano. Sin embargo, en esta investigación se muestra que sus inversiones se han canalizado hacia las regiones más pobladas y no han tenido un impacto relevante en la mejora de los indicadores que permiten medir problemas sociales como la pobreza. Se pone de manifiesto, igualmente, que dicha Iniciativa no es la solución “mágica” de la cuestión social en el país. En cuanto a la metodología, se ha combinado información cuantitativa y cualitativa. La primera permite extraer indicadores para su representación gráfica y cartográfica y la segunda permite un análisis de las valoraciones expresadas por los actores públicos implicados en ella.
Modeling and Economic Analyses of Graded Particle Injections in Conjunction with Hydraulic Fracturing of Coal Seam Gas Reservoirs
Authors: Santiago Vanessa , Ribeiro Ayrton , Johnson Raymond , Hurter Suzanne , You Zhenjiang
Published: February 2022

Hydraulic fractures can enhance well productivity from stress-sensitive naturally fractured reservoirs, such as coalbed methane or coal seam gas (CSG) reservoirs. Graded proppant injection (GPI) has been proposed to enhance long-term, far-field interconnectivity between the created hydraulic and short-term, enhanced natural fracture permeability, resulting from fracture fluid leakoff and lowered net effective stress. This novel study shows how applying GPI with hydraulic fracturing treatments resulting in an increased stimulated reservoir volume (SRV) can enhance well productivity and improve CSG well economics.

A commercially available reservoir model and history-matched hydraulically fractured coal seam case are used to evaluate well performance differences between a hydraulic fractured reservoir and one including GPI application. A dual-porosity system and the Palmer and Mansoori model are used to simulate initial and long-term permeability accounting for reservoir depletion (i.e., increased net effective stress and matrix shrinkage). A previously validated case study is used to describe the post-embedment benefits of GPI based on the porosity model and history-matched reservoir properties. A net present value (NPV) can then be calculated for each scenario, based on the production differences and typical Australian CSG costs.

Our results show that permeability enhancement is achieved beyond the hydraulically fractured region for all post-GPI stimulation cases. An optimal SRV can be found relative to permeability that maximizes the incremental NPV from GPI application. The next most significant parameters after permeability that influence the economic outcomes are fracture porosity and coal compressibility. A larger SRV yields higher cumulative gas production over 30 years with up to 7.2 times increase over gas production without GPI. This study substantially increases our understanding of how to model and understand the benefits of GPI application along with hydraulic fracturing to increase the SRV in CSG wells.
A Sustainable Fluid System for Sand Consolidation
Authors: Vaidya Nirupama , Prabhu Rasika , Santamaria Juan-Carlos , Abivin Patrice , Susmarski Josh
Published: February 2022

Sand production from unconsolidated sandstone reservoirs can adversely affect reservoir productivity and project profitability. Sand consolidation is a remedial technology that consists of injecting a fluid into the formation to bind the sand grains together and provide strong cohesion. Most existing consolidation technologies use solvent-based fluids, which increases the operational complexity of achieving successful treatment without compromising retained permeability and raises environmental concerns. A novel solvent-free resin system for sand consolidation addresses these challenges by using water-based fluids that are capable of providing high compressive strength while maintaining high permeability, thus simplifying operations and reducing environmental concerns.

The new fluid system consists of a resin, a curing agent, and a surfactant dispersed in water. The consolidation mechanism is designed to be triggered downhole by temperature. The fluid system was fully characterized in terms of viscosity, stability at elevated temperature, and performance to provide operational control and reduce pumping risks in a wide range of reservoir applications. Regained permeability and compressive strength of the consolidated sand were quantified for clean sand and sand with different amounts of clays.

The consolidation fluid uses limited resin with the balance being predominantly water. The large volume fraction of water acts as a spacer, resulting in high retained permeability (greater than 75%) after the resin has set. Once mixed, the fluid has very low viscosity (less than 5 cP at ambient temperature and 170 s-1) and is stable for at least 24 hours. Additionally, the consolidation mechanism is uniquely triggered by temperature, providing more control and reducing operational risks. This mechanism allows all required components to be mixed together and the treatment to be single stage, thus drastically improving operational efficiency. The new consolidation fluid functions well over a wide temperature range (104°F to 230°F) yielding an unconfined compressive strength of up to 2800 lbf/in2 while maintaining regained permeability of over 75%. It is also compatible with significant amounts of clays, thereby enabling its use in challenging reservoir conditions.

The new consolidation fluid system introduces more sustainability into the oilfield. It performs well over wide reservoir permeabilities and temperature ranges and is also compatible with clays and oils. The operational simplicity and efficiency gains offered make this fluid an attractive alternate to existing resin-based sand consolidation products.
Calcium Sulfate Scale Dissolution Efficiency by Various Chemicals Additives
Authors: Alissa Faisal M , Aljuryyed Norah W , Balharth Salem A , Leoni Matteo
Published: February 2022

Calcium sulfate scale is one of the challenges that face production stability in the oilfield industry as it is one of the most challenging scales to manage. Sulfate-scales are very hard to dissolve because of their low solubility-product. This work studies the dissolution capacity of different chemical additives and recipes on calcium sulfate scales. In this work, the maximum dissolution capacity (gram of scale/mole of chelating agent) of various chemical additives and recipes will be studied to evaluate the efficiency in the dissolution of Calcium Sulfate scales. Several experiments were conducted at multiple doses, pH, and in-presence of a catalyst. Potassium Carbonate was used as a catalyst in the dissolution of Calcium Sulfate scales. The performance of each additive was studied in a catalyzed and non-catalyzed pathway and with various. A Series of experiments conducted showed that parameters such as the additive-dose, pH, and a catalyst affect the dissolution efficiency. The dissolution performance efficiency of each additive (Lactic Acid, Citric Acid, N,N-Dicarboxymethyl Glutamic Acid (GLDA), and Gluconic Acid) was compared to the additive performance efficiency under a catalyzed pathway in a formulated recipe. The outcome of this work will contribute to the economic value added by finding the most efficient and cheap recipe to remove Calcium Sulfate scales from the wellbore.
Acidizing Treatment Design Assessment Based on Dolomitic Field Core Testing
Authors: Santos Sarai , Salazar Munive Angel , Hernandez Del Angel Everardo , Villaseñor Omar , Guzman Almazo Jose Luis , Hernandez Vulpes Dulce , Beuterbaugh Aaron M. , Reyes Enrique Antonio , Squires Scott , Campos Katya
Published: February 2022

Fields in offshore Mexico present different challenges to maximizing resource recovery due to the reservoir characteristics and completion configurations. Acidizing of high temperature (HT) dolomitic reservoirs (290 °F/143 °C) in the maritime fields represents the primary stimulation option due to existing well parameters restricting treatment designs to matrix rate conditions.

Acidizing treatments are typically based on HCl and organic acids and for the first time a multifunctional, low viscosity, retarded HCl acid is also available. Laboratory wormhole tests were conducted for matrix injection but also in a pseudo-acid fracture condition (split-core) in order to establish feasibility for future stimulation designs. Three acid blends were used, a blend of organic acids (OA), a mixture of HCl and organic acid (HA), and a polymer free retarded HCl acid (HRMA).

The cores tested correspond to a particular well and X-ray Diffraction (XRD) analysis confirms it is >98% dolomite. CT imaging corroborates the heterogeneous permeability due to primary and secondary porosity systems (5% – 10% and 10% – 15%). The pore volume breakthrough of each acid blend was determined for two cores of similar porosity under same constant injection rate. Results indicate the organic acids blend (OA) can have better injectivity when flow rate is much higher than the HCl/Organic acid (HA) blend. A core with 10X lower permeability (0.1 – 0.5 mD) was tested with new Retarded HCl acid (HRMA) using same injection rate as the other acid blends. Results indicate that Retarded HCl (HRMA) does not cause core facial dissolution under unoptimized injection rate. The wormhole patterns generated for the HCl/Organic acid (HA) blend show good distribution and for Retarded HCl (HRMA) show enhance acid containment (less ramification). Both HCl acid blends (HA and HRMA) are suitable for dolomitic acidizing under different injection rates, while the purely organic acid blend is more adequate for high rate injection.

Notably acidizing of dolomitic reservoirs can be highly efficient under optimized conditions and future work with non-retarded and retarded acids can systematically drive pumping engineering designs. The Retarded HCl acid (HRMA) has multifunctional properties including scale inhibition and lower HCl reactivity.
Improving Fluid Loss Control During Well Intervention; A Case Study on the Use of Innovative Salt System
Authors: Hussein Mahmoud , Al-Rashedi Hamad , Al-Naqi Ahmad , Gonzalez Santiago , Erhamah Abdulaziz , Najaf Reeham , Malik Satinder , Bosilca Dan , Ali Mohamed , Tresco Kim , Luyster Mark
Published: February 2022

Kuwait heavy oil development target reservoir is a shallow, sub-hydrostatic and unconsolidated sandstone with relatively high porosity and permeability.

Due to nature of this reservoir, well intervention operations in North Kuwait Heavy Oil Asset exhibit a higher risk of significant fluid loss that causes wellbore impairment, incremental operational costs, excess brine volume usage, and more importantly a significant impact on production deferment. The latter is due to formation damage and the time required to produce the completion fluid that is lost to the reservoir during any well intervention.

The objective of using a cost-effective and less non-damaging fluid is achieved by the application of a novel customized salt system that was successfully trialed in the field.

A systematic research was employed to find a suitable product/system that could be used in sub- hydrostatic conditions, able to effectively control fluid loss while retaining as near the original permeability.

This new system and subsequent formulation adhered to the following criteria:

Readily available Cost effective Easy to formulate and pump Easy to circulate out No long-term formation damage thus retaining original formation permeability

The success of this fluid loss control material is indicated by a constant fluid level at surface after application thereby confirming its effectiveness in meeting the desired objectives.

This salt system application was successfully field tested, and the results were satisfactory. During well intervention operations, the system effectively arrested fluid loss as confirmed by the fluid level measured at surface. Post operation, the well was brought back immediately to its original rate thereby confirming little to no permanent reduction to reservoir permeability.

Historically, during well interventions in Kuwait Heavy Oil field, dynamic loss rates measured were in the 100 to 120 bbl per hour range. Post application of this salt system showed fluid loss rates ranging from 3 to 4 bbl per hour. To date no post acid stimulations were required to restore well production to original levels. This system was readily adapted for thermal application and compatibility with existing fluids, good bridging characteristics, as well as flow-back enhancement. This approach eliminated additional AFE costs by minimizing dynamic losses.
Uncertainty Driven Formation Damage Control Using Analytical Technique
Authors: Andryushchenko Aleksei , Ghalambor Ali
Published: February 2022

The aim of this work is to develop an analytical technique for characterizing formation damage.

The oil reservoir of the East Siberian Yaraktinskoe field suffers from salt and organic scales precipitation leading to skin damage. Besides, injection water has sulfates, which precipitate as gypsum in the near wellbore area of production wells and at bottomhole. Historically pressure build-ups (PBU) were used to characterize the evolution and extent of the damage. The use of PBUs leads to the shut in of production. Additionally PBUs in the reservoir provide conclusive results in no more than 22% cases. Based on inconsistent results from PBUs and their cost in production losses, it was of interest to find a better and preferable technique for formation damage control using existing data.

The result of that initiative is analytical technique that provides dimensionless productivity index (Jd) range monitoring over time, Jd range comparison to the technical potential and identification of the performance gap range. By identifying the performance gap range, stimulation actions are ordered reestablishing oil production, productivity index (PI) and Jd.

The technique is based on transmissibility (kh/µB or T) model derived from Kamal and Pan study (2010) and reservoir pressure (Pres or P) model. Stochastic part of the technique is provided by T and Pres error functions. The functions are probability distribution functions (PDF) derived from comparison of the modeled T and Pres with well test measured historical values. Using this T and Pres models and historical data of liquid rates and bottomhole pressures (BHP), we can calculate current and historical Jd, Jd drop relative to historical performance or potential and oil rate potential increment with uncertainty margins (10th, 50th and 90th percentile or P10-50-90). The margins are calculated from 10000 stochastic iterations of T and Pres within the PDFs of their error.

The technique has enabled to find 14 stimulation candidates during 6 month of use. Overall, 15 stimulations were implemented since one well was stimulated twice. Ten of 14 stimulations increased oil production rate by 4161 bbl/day. Five stimulations were economically unsuccessful due to inappropriate stimulation technology implementation. The technique shows acceptable uncertainty level to make efficient and appropriate decisions for the appropriately chosen stimulation technology. Modeled P50 PIs have good match with more than 85% correlation with well test measured PIs after economically successful stimulation.

New analytical technique is presented here, which can be utilized as an automatic process without repeating well tests for routine generation of accurate stimulation plan with numerical assessment of success probability and anticipated oil rate increment uncertainty range. Realization of stimulation potential is simplified to the task of appropriate treatment technology selection and implementation for the candidates from the rating.
Specially Tailored Reservoir Drill-In Fluid and Acid Precursor Technology with Applicability in Ultra Deepwater Gulf of Mexico Wells
Authors: Granger Brittany , Harton Joshua , Detiveaux Christopher
Published: February 2022

The Gulf of Mexico (GoM) presents an array of complex challenges, including ultra-deepwater depths, narrow pressure window environments, low permeability, and elevated temperature zones. Operators in the GoM frequently experience highly reactive, unstable shales while drilling long, heterogenous open hole lateral wells. While traditional Reservoir Drill-in Fluids (RDF) and breakers are well known for use in production wells, the filter cake cleanup can often be non-uniform, corrosive to completion assemblies, and result in variable drawdown. This disparity in pressure drawdown across the reservoir section can ultimately result in the creation of positive skin damage. Injector wells offer a more extreme scenario in comparison to production wells because no flowback occurs, which can make it more difficult to deliver sustainable uniform injection. The solution to these challenges lies in the development of RDF and breakers specifically tailored to provide uniform, time delayed coverage, minimal corrosivity, and effective removal of the RDF filter cake. In order to successfully maximize injection and maintain performance for the scope of the field life, an RDF was customized in tandem with an optimized, delayed-release filter cake breaker to limit formation damage and provide complete uniform filter cake removal. This paper will discuss how the learnings from Eastern Hemisphere operational activities directed at optimizing treatment designs for more difficult injector wells can be tailored for efficient use in the GoM. Results from laboratory testing and global field applications of the new RDF and breaker designs will be presented, as well.
Reversible Fluids and Mud Breaker Technology Outperforms Productivity and Injectivity in West Africa–Fit to Purpose and Designed for Success
Authors: Eyaa Allogo Clotaire-Marie , Allias Benoit , Tayebi Redda , Baraque Antoine , Lansot Jean Yves , Diogo Jose
Published: February 2022

Lessons learned in Moho-Nord field Congo improved well productivity and injectivity, from Miocene formation. Due to the type of drill-in fluid used in the initial development phase of the field, the skin factor showed extremely high values, above 150. The values dropped to near 50 after remediation and stimulation operations. Productivity and injectivity rates were significantly poor and did not meet the targets.

To mitigate these issues, the most suitable fluids for drilling, completion and removing the filtercake for a horizontal open hole standalone completion were required. Fluids were identified by an extensive laboratory study. The selection was based on the reservoir characteristics and sand control completion type. It was also based on review of past experiences from the original project phase, and continuous discussion between operator and the fluids provider. Changes were made to improve practices during the field implementation.

One reservoir drill-in fluid (RDF), a reversible invert emulsion (RIE) non-aqueous base mud (NABM) system and two filtercake breaker systems were selected and implemented in the field. The RIE showed suitable properties required for NABM drilling. It also demonstrated properties of easier filtercake destruction when exposed to lower pH breaker fluids. Its filtercake did not need surfactant/solvent pills to change the wettability of the solids in the filtercake which notably simplified the borehole cleanup operation. The improvement occurred throughout the second and third phases of the field development. The ameliorations were measured through skin value, production and injectivity rates and initial flow initiation pressure. Values were compared against initial targets. As an example, the skin value went from 150 in phase one to less than 5 in phase three. No acid stimulation was required in any of these wells, providing a huge cost saving for the operator. The combination of the fluids selected, and improved drilling and completion practices led to skin values for most between 0 and 3. The productivity and injectivity outperformed and surpassed expectations.

Knowledge gained from the study re-established the importance of selecting the suitable fluids systems and using best in class drilling and completion practices. This paper summarizes upfront fluid design requirements and fluids management procedures implemented during drilling, completion and filtercake breaker placement to ensure safe and successful open hole completions.
DNA Tracer Technology Applications in Hydraulic Fracturing Flowback Analyses
Authors: Asadi Mahmoud , Blair Tyler , Kuiper Ben , Cunningham Bruce , Shamburger Tim , Looyenga Brendan , Morales Rogelio
Published: February 2022

A new and robust tracer technology, based on Nano-sized encapsulated silica DNA sequences is presented. This cutting-edge technology enables a bond of each DNA sequence to a magnetic core particle and encapsulates it with silica. Therefore, one can have infinite sequences of DNA tracers. Each DNA tracer, with its identity signature, can be easily identified and characterized with no interferences. Unique chemistry makes these DNA tracers, either water-wet or oil-wet. The water-wet tracers can be used in hydraulic fracturing to precisely and accurately analyze flowback, both qualitatively and quantitatively. The oil-wet tracers can be used in evaluating the source and quantity of oil production in hydraulic fracturing. In-depth laboratory testing indicates that these tracers, unlike current industry used chemical tracers, are stable at high temperature, do not react with formation mineralogy to form reservoir rock plating, do not partition, and do not disintegrate over time. These tracers are injected in the liquid-laden slurry at very low concentrations and can be detected at parts per trillion.
Numerical Modeling of Waterflooding Experiments in Artificially Fractured and Gel Treated Core Plugs by Embedded Discrete Fracture Model of a Reservoir Simulation Toolbox
Authors: Kaya Onur Alp , Durgut Ismail , Canbolat Serhat
Published: February 2022

The fluid flow dynamics of the matrix and fractures are significantly different from each other. Fractures are high-permeability flow channels that serve as the main flow units. On the other hand, the Matrix takes up the majority of the reservoir volume and is generally regarded as the main storage unit. The primary goal of this research is to investigate numerically the effects of fractures and polymer gel treatment on oil recovery during waterflooding of artificially fractured core plugs. In this study, the MATLAB Reservoir Simulation Toolbox (MRST) was used for the numerical solution. Different numerical models were developed using MRST to describe three main cases: non-fractured core plug, fractured core plug, and polymer gel treated core plug. Following the creation of the physical models, 2 PV water was introduced into all core plugs. Oil recovery and water saturation profiles vs. time plots were obtained. The standard Buckley-Leveret solution is utilized to evaluate the numerical model, and the fractures are modeled using the Embedded Discrete Fracture Model (EDFM). The results of the simulations were compared with the results of the experiments. In the experiments, results were recorded after 2 PV water injections. For the polymer gel treated core plugs, 2 PV more water was injected after the polymer gel operation. same injection volumes as used in the MRST model. For an artificially fractured core sample, initial oil recovery was measured as 28.57% experimentally and 28.87% with MRST. Then polymer gel was applied to the core plug, increasing the oil recovery to 42.85% experimentally and to 40.83% with MRST. Similarly, before and after polymer gel operation, mean water saturation was measured as 58.34% and 66.5%, respectively. MRST results showed mean water saturation of 58.38% and 65.45%. It is clear from both numerical and experimental models that the existence of fractures decreases the overall hydrocarbon recovery. Polymer gel treatment decreases fracture permeability, resulting in a more uniform sweep and increased overall recovery. Additional oil recovery was observed after polymer gel treatment. Besides, polymer gel treatment of the matrix is also efficient for increasing the recovery and leads to the same results. Moreover, the effects of the fracture aperture and fracture permeability on the recovery were also investigated. Fracture aperture directly impacts the recovery of the low aperture values when the permeability is constant. Similarly, permeability directly affects recovery for high values when the aperture is constant. Finally, the results showed that experimental and numerical findings are significantly close to each other for all non-fractured, fractured, and polymer gel-treated cases.
Protective Effect of Phytogenic based Additives in Enterotoxigenic Escherichia Coli Challenged Piglets
Authors: Caprarulo Valentina , Turin Lauretta , Hejna Monika , Reggi Serena , Dell'Anno Matteo , Riccaboni Pietro , Trevisi Paolo , Luise Diana , Baldi Antonella , Rossi Luciana
Published: February 2022

Post Weaning Diarrhea (PWD) is the most important multifactorial gastroenteric disease of the weaning in pig livestock. Phytogenic (PHY) natural extracts are largely studied as alternatives to antibiotic treatments in combating the global concern of the antimicrobial resistance. The aim of this study was to evaluate the protective effect of innovative phytogenic premix with or without short and medium chain fatty acids (SCFA and MCFA) in O138 E. coli challenged piglets. Twenty-seven weaned piglets were allotted into four groups receiving different diets according to the following experimental doses: PHY1 (n=7) fed basal diet supplemented with 0.2% of phytogenic premix, PHY2 (n=7) fed basal diet supplemented with 0.2% of phytogenic premix added with 2000 ppm of SCFA and MCFA. After 6 days of feeding experimental diets, animals were challenged (day 0) with 2x109 CFU/dose of E. coli and CTRL group fed basal diet was divided at day 0 into positive (CTRL+; n=6) and negative control group (CTRL-; n=7). Body weights were recorded at -14, -6, 0, 4 and 7 days and the feed intake was recorded daily. E. coli shedding was monitored for 4 days post-challenge by plate counting. Fecal consistency was registered daily by a four-point scale (0-3; diarrhea >1) during the post-challenge period. Tissue samples were obtained for gene expression and histological evaluations at day 7 from four animals per group. Lower average feed intake was observed in CTRL+ compared to PHY2 and CTRL during the post-challenge period. Infected groups showed higher E. coli shedding compared to CTRL- during the 4 days post-challenge (p<0.01). PHY2 showed lower frequency of diarrhea compared to PHY1 and CTRL+ from 5 to 7 days post-challenge. No significant alterations among groups were observed in histopathological evaluation. Duodenum expression of occludin tended to be lower in challenged groups compared to CTRL- at 7 days post-challenge (p=0.066). In conclusion, dietary supplementation of PHY plus SCFA and MCFA revealed encouraging results for diarrhea prevention and growth performance in weaned piglets.
The chemical chaperon 4-phenylbutric acid improves cardiac function following isoproterenol-induced myocardial infarction in the rat
Authors: Vatankhah Fatemeh , Garjani Alireza , Vaez Haleh
Published: February 2022

Purpose 4-phenyl butyric acid (4-PBA) is a chaperone-mediated autophagy (CMA) inducer, which eliminates unnecessary and damaged cellular components through lysosomal enzymes. It could reduce misfolded and unfolded proteins produced after myocardial infarction (MI) and can improve cardiac function. We aimed to investigate the effect of 4-PBA on isoproterenol-induced MI in the rat. Methods Isoproterenol (100 mg/kg) was injected subcutaneously for two consecutive days simultaneous with an intraperitoneal (IP) injection of 4-PBA at 20, 40, or 80 mg/kg with 24-h intervals for five days. On day 6, hemodynamic parameters, histopathological changes, peripheral neutrophil count, and total antioxidant capacity (TAC) evaluated. The expression of autophagy proteins measured by using western blotting. 4-PBA significantly improved post-MI changes in hemodynamic parameters.Results Histological improvement found in 4-PBA 40 mg/kg (P<0.05). The neutrophils count in the peripheral blood significantly decreased in the treatment groups compared with the isoproterenol. Furthermore, 4-PBA at 80 mg/kg significantly increased the serum TAC compared to isoproterenol (P<0.001). Western blotting results showed a significant decrease in the P62 level (P<0.05) of 40 and 80 mg/kg 4-PBA treated groups.Conclusion This study demonstrated that 4-PBA could have a cardio-protective effect against isoproterenol-induced MI, which can be due to the modulation of autophagy and inhibition of oxidative stress. Obtaining effective results in different doses shows the need of optimum degree of authophagic activities in cells.