bluuebunny/crossref_metadata_2025_split huggingface dataset:
A New Record of Rochia maxima (Koch, 1844) Through a Species Clarification of Lola Snail, Bangka Belitung Islands, Indonesia
Authors: Aisyah Siti , Pringgenies Delianis , Supratman Okto , Wahyudi Dimas , Rizal Fahmi , Ariyanto Dafit , Arbi Ucu Yanu 
Published: November 2024

Graphical Abstract

Highlight Research

Lola snails originating from the Bangka Belitung Islands (Nasik Strait, Rebo Waters, and Ketawai Island) were identified as a maxima not to be R. nilotica species based on morphological molecular identification.
Maxima and R. nilotica have the same morphological form, but they are genetically different.
The clarification of the Lola snail species in this study serves as a reference in determining the conservation status of the Lola snail.
The clarification of the Lola snail species serves as a reference in determining the catch quota from the Bangka Belitung Islands.

Abstract
The use of Lola snails (Rochia maxima) in the Bangka Belitung has continued to increase. However, research focused on Lola snails originating from the Bangka Belitung has not been thoroughly conducted. In a previous study, the Lola snail sample found in the Bangka Belitung was Trochus niloticus (current name: Rochia nilotica). This study aimed to identify Lola snail species using the DNA barcoding as a way of clarifying Lola snail species that originated in the Bangka Belitung. Lola snail sampling was carried out at three locations, which were Nasik Strait, Ketawai, and Rebo Waters. This study was conducted through five stages, including Lola snail tissue sampling, DNA extraction, amplification by PCR, sequencing, and data analysis. The results showed that the molecular identification of the Cytochrome Oxidase Subunit 1 (COI) gene in Lola snail samples was identified as Rochia maxima species (Koch, 1844). The results of the phylogenetic tree analysis showed that Lola snails found in the Bangka Belitung were close to Tectus maximus (or Rochia maxima) species. R. maxima has a lighter shell than R. nilotica, a clear conical shape, and a circle on the body that does not widen at the edges. Unlike zoologists who said that R. maxima is the primitive form of R. nilotica, the present study found that they have the same morphology and are considered similar but genetically different. The clarification of Lola snail species can be used to determine the conservation status and catching quota of Lola snails from the Bangka Belitung.
Radiotherapy efficacy and prognostic factors in hepatocellular carcinoma patients with cardiophrenic angle or superior diaphragmatic lymph nodes metastasis
Authors: Ye Ting , Zeng Zhaochong , Sun Jing , Du Shisuo , Chen Yixing , Wu Zhifeng , Yang Ping , Hu Yong , Zhang Xian , Zhao Qianqian , Wu Qiqiao , Zhang Jianying , Zhang Boheng 
Published: November 2024

Aim: To investigate radiotherapy efficacy and prognostic factors in patients with hepatocellular carcinoma (HCC) with cardiophrenic angle or superior diaphragmatic lymph node metastasis (LNM).
Methods: We retrospectively analyzed 72 patients with HCC presenting with cardiophrenic angle or superior diaphragmatic LNM at Zhongshan Hospital of Fudan University from 2010 to 2023. Response rates, survival rates, local control rates, prognostic risk factors, and side effects of external beam radiation therapy (EBRT) were compared between patients with EBRT (EBRT group) and those without EBRT (non-EBRT group).
Results: The overall response rates in the EBRT group and the non-EBRT group were 68.8% (22/32) and 7.5% (3/40), while median survival was 16.1 (95%CI: 8.09-24.12) and 5.9 months (95%CI: 3.05-7.76) respectively (HR = 2.87, P < 0.001). The survival was significantly prolonged with a daily dose > 4 Gy (P = 0.014). EBRT (P < 0.001) was identified as a factor correlated with the local control rate. Multivariate analysis revealed that tumor thrombosis, multiple intrahepatic tumors, a maximal intrahepatic tumor diameter ≥ 5 cm, abdominal LNM, and lack of EBRT were poor prognostic factors. Gastrointestinal (GI) bleeding in patients with bioequivalent dose 10 (BED10) ≤ 70 and > 70 were 0% (0/22) and 30.0% (3/10), respectively (P = 0.024).
Conclusion: EBRT was a safe and effective treatment for HCC patients with cardiophrenic angle or superior diaphragmatic LNM and might prolong overall survival. Dose > 4 Gy per day and BED10 ≤ 70 would be recommended for LNM. Patients with tumor thrombosis, multiple intrahepatic tumors, a maximal intrahepatic tumor diameter ≥ 5 cm, abdominal LNM, and lack of EBRT had a poor prognosis.
Evaluation of drug use in stroke patients at the inpatient unit of Brebes Hospital, Central Java
Authors: Budiyanti Nur Aini , Hapsari Indri , Nurhidayati Friska Suci 
Published: November 2024

Background: Effective stroke treatment is complicated by factors such as polypharmacy, drug interactions, and side effects, leading to drug-related problems (DRPs) that hinder therapeutic outcomes. Evaluating drug use in stroke patients is crucial to ensure rational, safe, effective, and efficient treatment, ultimately improving therapeutic outcomes.
Objective: This study aimed to evaluate the drug use patterns in inpatient stroke patients at Brebes Hospital, focusing on the appropriateness of drug selection, dosage, administration, and the impact of patient characteristics on DRPs.
Method: A retrospective, descriptive evaluative design was employed, with data collected from medical records of stroke patients hospitalized at Brebes Hospital between May and July 2022. A total of 135 patients (110 ischemic, 25 hemorrhagic stroke) were included through consecutive sampling. Univariate analysis was used to describe patient characteristics and treatment patterns, while bivariate analysis with the chi-square test assessed the relationship between patient characteristics and DRPs.
Results: The most common medications included citicoline (88.15%), clopidogrel (68.85%), and amlodipine (40.48%). DRPs were identified, including non-compliance with guidelines (1 case), contraindicated drugs (5 cases), and inappropriate drug selection (1 case). Notably, five cases of contraindicated use of omeprazole with clopidogrel and one case of phenytoin without indication were observed. Patient characteristics such as age and comorbidities did not significantly influence the incidence of DRPs (p > 0.05).
Conclusion: The study found irrational drug use in stroke patients, with DRPs posing challenges for treatment optimization. Addressing DRPs through improved prescribing practices and pharmacist intervention is crucial to enhancing therapeutic outcomes in stroke management.
Hybrid Design Stabilizer/Reamer Helps Driving Drilling Efficiencies in Unconventional Non-Reservoir Vertical Applications in KSA
Authors: Alhajri N. , Mounzer F. , Noor F. 
Published: November 2024

Abstract
Drilling a well is a costly process with a high element of risk that requires strict monitoring. Given the high-cost environment, introducing new techniques and innovative technology to high-profile offshore, or remote operations is often more feasible and financially viable for both consumer and provider. Such an exercise is more challenging for comparatively low-cost non-reservoir applications similar to that of rotary bottom hole assemblies (BHAs) used in vertical drilling operations. Hence, the introduction of clever yet relatively simple technology and solutions serving improved well economics is highly desirable.
New complex smart downhole tools and technology typically come with a comparatively hefty price tag. Furthermore, adding components to the BHA will automatically result in increasing the bottom line. Therefore, the primary approach was to replace existing components such as stabilizers and/or roller reamers with a design that offers similar functionality with superior efficiency. A similar innovative device was identified and an initiative was started in order to evaluate this new Efficient Design Stabilizer (EDS) in the 12″ hole section as a starting point. After ascertaining representative offset wells offering a reliable benchmark, a suitable well was then selected for the introduction of the EDS. The idea was to swap out the conventional design stabilizers or roller reamer with the novel design in a packed rotary BHA. A set of clear key performance indicators (KPIs) were also required in order to ensure a qualitative evaluation.
The collation and comparison of the standard drilling parameters produced very encouraging findings. There were noticeable improvements across hydraulics data, mechanics as well as performance data compared to the best offset. Moreover, the introduction of the EDS did not pose any new risks to the operation. The objectives of maintaining verticality were likewise successfully accomplished. Correspondingly, the subsequent casing run proved trouble-free and smooth.
These favourable outcomes were really promising, providing the confidence to pursue utilizing the new design tools, and further introduce them to other hole sections. This paper details the selection process of the EDS and provides a thorough description of the new design features and benefits of the adopted design after specifying well, BHA, and the nature of the application. An analysis of the acquired data is then presented and explained. Finally, the results and gains are summarized and quantified.
The avant-garde archetype of the EDS adheres to the recommended stabilizer selection criteria and guidelines by design and addresses known shortcomings of conventional design stabilizers and roller reamers that are yet widely accepted by the industry. As such, the new design challenges the status quo and offers a cutting-edge substitute for roller reamers and conventional stabilizers better suited for 21st century demands.
Repairing Corrosion Resistant Alloy Clad Pipelines: The Weld or Connect Choice
Authors: Cavallini F. , Girello E. 
Published: November 2024

Abstract
The use of subsea Corrosion Resistant Alloy (CRA) clad pipelines is increasing nowadays, and there are plans to increase even further their laying to develop large reservoirs and transport high temperature, high pressure, highly corrosive fluids. This tendency calls for the development of solutions capable of facilitating a safe and reliable repair intervention, which are going to be presented hereafter.
This paper aims at comparing traditional welded solutions, such as above water repair methods and underwater hyperbaric welded solutions, with the novel options offered by subsea connectors purposely developed for CRA clad pipelines. These connector solutions ensure continuity of containment of the corrosive fluid by means of engineered non-elastomeric, metallic seals, and are qualified according to the most demanding DnV rules, thus allowing the comparison on a pure operational perspective.
Repair connectors for CRA clad pipelines are robust and qualified solutions, and their installation shall follow the same sequence as legacy elastomeric-seal repair connectors, with minor additional preparation required. From a pure intervention perspective then, a dedicated comparison of each step will be provided, thus emphasizing the reduced demand in terms of installation spread, specialized divers as well as tailor made welding procedures requiring constant update and recertification. From a timeline perspective, repair connectors offer valuable alternatives for all such cases where time is really of the essence, such as in the business interruption scenario post intervention. Finally, an assessment of spare pipes is also provided, showing how the pre-selection of an optimized repair solution can effectively reduce the pre-investment needed for spare pipes, especially in subsea congested areas.
Technology development is constantly evolving for the benefit of the energy industry: while CRA clad pipeline repair solutions have been already shown in certain occasions with focus on the technology qualification, a competent and complete assessment of the wide-reaching benefits of such technology has never been presented, and this would be extremely valuable for the Arabian Gulf area.
A Silent Killer: Capturing The Learnings of Unexpected Casing Deformation - A Case History from Block-61 Tight Gas Field
Authors: Al-Shuraiqi K. A. , Casero A. , Love A. , AL-Hadhrami I. , Roy A. , Al-Harrasi S. , Al-Fadhli K. , Al-Shidhani T. 
Published: November 2024

Abstract
Throughout its life, every oil and gas well is subjected to many risks with potential detrimental consequences affecting reserve accessibility and resulting in expensive corrective intervention activities. One of those risks threatening wells health is Casing Deformation (CD). CD are notoriously difficult to detect real time, and normally discovered after the fact during subsequent operations. Therefore, understanding of the interdisciplinary context and early symptoms associated with CD is crucial to minimize their occurrence. The objective of this paper is to discuss a CD incident that took place in one of the wells – G-107 in bock-61, describing its silent signature and lessons learned for future field development and production enhancements.
Successfully minimizing, managing, and recovering from CD incidents heavily depend on understanding the geomechanics and geologic context associated with a specific field, the data acquisition and processing of diagnostic tools used, and on well architecture and stimulation design and selection. Additionally, proper operational planning is also critical in reducing and mitigating the economic impact of CD when they occur.
Block-61 is considered one of the biggest gas fields in Oman. Production is mainly from Barik and Miqrat sandstone formations with Barik as the main reservoir. Most of the wells are vertical and few horizontals. On 20 November 2022, after the hydraulic fracturing operation and during bridge plug milling operation in G-107, a restriction was encountered at the top of the perforated interval. Through the application of different diagnostic tools, the restriction was later determined to be a casing ovalization with a minimum cross well diameter of 3.18 in., preventing accessibility to the rest of the well and the associated reserves.
The paper will review the incident investigation approach adopting the five whys methodology, including documentation of the findings and learnings, highlighting the gaps associated with well planning, well architecture and stimulation design, and all the ancillary operations such as perforation. Furthermore, it will describe how difficulties in retrieving records of previous CD incidents should be corrected and not underestimated. A detailed description of the diagnostic tool selection such as downhole camera, multi-finger caliper logs and lead impression block, and the analysis of the data acquired with such diagnostic tools will also be presented. Finally, recovery actions and future changes to the well design will be described aiming for a robust system that does not simply react to the incident but allows mitigating future CD events.
An Investigation of the Influence of Liquid Nitrogen on Tight Sands Through Micro-CT Scan Imaging
Authors: Al-Raeeini Khaled Ahmed Mohammed , Aljawad Murtada Saleh , Khan Hasan J 
Published: November 2024

Abstract
Hydraulic fracturing is essential for extracting hydrocarbons from tight sands but often results in suboptimal performance due to formation damage caused by water. Optimizing hydraulic fracturing fluid (HFF) with CO2 or N2 has led to only marginal improvements. This study proposes using liquid nitrogen to induce microfractures via thermal shock, reducing fracture initiation pressure through rock stress redistribution. A Scioto sandstone sample (5 mm in diameter) was heated to 70°C for 24 hours and then exposed to liquid nitrogen for 45 minutes. Changes in pore structure were captured using a high-resolution micro-CT scanner at a resolution of 2.4 microns before and after exposure. The image stacks were processed, and fifty-two cubic sub-samples (each 100x100x100 voxels) were extracted from four spots on the x-y plane and along the z-axis. These sub-samples were segmented into pore and solid grain regions using a machine learning algorithm, and the rock's porosity and permeability were calculated. Results showed an increase in average porosity and permeability from 15.4% and 6.3µD in the initial scan to 17.2% and 7.2µD in the final scan. Visual analysis revealed new pore spaces in the form of long channels, primarily near the outer boundary of the sample. These findings suggest that thermal shock induced rock stress failure, creating fractures that might reduce fracturing pressure. Using liquid nitrogen offers significant advantages, including preventing formation damage by converting to gas and flowing out easily. It also reduces the applied fracking pressure due to induced stress failure and serves as an environmentally friendly alternative to HFF, protecting water resources and avoiding disposal costs and contamination risks.
Identifying Critical Skills for the Future
Authors: Kashwani Hanan Abdulla , Rizvi Shaheena 
Published: November 2024

Summary
With an ever growing emphasis on Sustainability, Abu Dhabi National Oil Company (ADNOC) continuously evaluates various aspects of operation to ensure our ability to navigate market dynamics. Over the last several years, our talent management practices have come under deep focus, and the transitions we have made has impacted the way we hire, retain and progress our people. The discipline approach to managing talent has provided far reaching insights into the capabilities we have and the depth to which we can invoke these capabilities.
In 2023, we embarked on yet another important transition – to identify and develop the Future Skills that we will require as we optimize our net zero journey. Given the shift towards digitalization, automation and integration of renewable energy, we are prioritizing upskilling future generations to keep ADNOC front and center of our industry.
We undertook this exercise in several phases, with the collaboration of our business leads and a Human Capital joint task Force. At its culmination, crucial data has been passed on to our businesses as well as key Human Capital functions for execution and alignment.
This project was divided into the following main stages: Benchmarking with global experts. Collating information through discussions, workshops and identifying a set of skills in areas e.g. Digitalization & Asset ManagementValidating skills with ADNOC Business Leaders and Experts. Creating, sanitizing and customizing skills and their definitions to create fit for purpose Future Skills.Existing Bench Strength. Identifying bench strength of all identified future skills through in-depth focus groups with Business Leaders and Experts to determine Build, Borrow, Buy strategies.Validating Future Skills. Conduct a group wide exercise to assess capability by deploying job specific future skill requirements, as well as mining data through self-declared skills.Integration with Workforce Planning, Talent Acquisition and other Human Capital Partners. To distill strategies to become part of the 5 year Business Plan (Build, Borrow, Buy).
The paper will deconstruct the process and also put forward the impact of this project and the steps that we undertook to deliver concise and usable output.
Study on the Key Factors Analysis and Measures Prevention of Casing Deformation in Horizontal Wells for Unconventional Reservoir
Authors: Zhang Wen , Dong Haihai , Ma Jifeng , Wang Xiaoguang , Zheng Sheng , Xu Hanbing , Ren Xu , Sheng Guorong , Zhou Wei , Zhang Ming 
Published: November 2024

Abstract
Based on the structural distribution characteristics and fracture development characteristics of block 530 in the Junggar Basin, Xinjiang, and by using microseismic, logging, and in-situ stress data, the characteristics of casing deformation in deep shale gas wells were summarized, the mechanism and main controlling factors of casing deformation were clarified, a risk assessment chart for casing deformation was established, and targeted risk prevention and control countermeasures were proposed. The research shows that fracture slip activation by fracturing is the main controlling factor of casing deformation. The fracture approach angle in the work area is mainly 10°-50°, accounting for 65.34%, and the critical activation pore pressure increment is 6.05-9.71 MPa. For casing deformation caused by geological factors, the prevention and control measures mainly include avoiding risky fractures and selecting low-stress mechanism factor areas for well placement. For casing deformation caused by engineering factors, the prevention and control measures mainly include four aspects: When placing wells, try to avoid high-activation-risk and high-slip-risk fractures. When it is impossible to avoid them, try to select areas away from the center of the fracture; Optimize wellbore parameters, adjusting the wellbore azimuth can reduce the shear stress acting on the casing to a certain extent and reduce the degree of casing deformation; Optimize the wellbore structure design, and ensure that the curvature radius of the horizontal well bending section is greater than 200 m on the basis of not affecting the drilling encounter rate of high-quality reservoirs; Optimize the fracturing operation parameters, increasing the avoidance distance, reducing the single-stage construction pressure, and increasing the stage length are effective measures to reduce the risk of casing deformation.
Matrix Acidizing Treatments with Particulate Diverters to Enhance Stimulation Fluid Reach in Wells Completed with Inflow Control Devices
Authors: Gadelhak Abdulrahman , Mustafa Hammad , Li Sima. , Kelkar Shrihari , Bazuhair Ahmed , Almaazmi Mariam , Almenhali Marwa , Alhosani Hour , Enkababian Philippe , Ryan Abraham , Araque Gustavo , Elmasry Aly , Mahmoud Wael , Arali Vaishak , Kamaletdinov Bulat 
Published: November 2024

Abstract
A horizontal oil producer well, equipped with a complex dual completion configured with inflow control devices (ICD) and a pre-perforated liner (PPL), situated in an offshore Middle East carbonate reservoir, underwent stimulation using HCl combined with a self-degradable multimodal particulate diverter (PD). The purpose of the PD was to bridge the ICD intervals and significantly redistribute the acid fluid flux from the high-injectivity ICD intervals to the lower-injectivity PPL, maximizing the reach of stimulation treatment fluid to enhance reservoir coverage.
PDs have been successfully used to achieve diversion in cased and perforated completions for years. However, PDs have rarely been used in ICD completions because the ICD design typically ensures even distribution of acid across the completion. In this case, a significant permeability contrast between the ICD-heel interval and the PPL-toe interval necessitated the PD application. Injected particulates bridged the ICD nozzles, diverting acid flow towards the lower-permeability wellbore section. To validate this method, a proof-of-concept yard test with an ICD tool string calibrated the necessary particulate volume, while laboratory testing verified PD degradation under reservoir conditions. Near-wellbore modeling indicated that introducing a PD stage ahead of the main acid stage could temporarily divert acid from the heel to the toe compartments, resulting in a more uniform wormhole length and stimulated skin profile.
The PD was successfully pumped into the ICD liners, and during treatment injection, diversion was confirmed through the pressure response. Upon the first pill landing, the PD stage generated over 400 psi of diversion pressure in the heel compartments, affirming the bridging of the ICD nozzles. Subsequently, when the second pill reached the ICD section, bottomhole pressure remained stable, indicating complete bridging by the first pill. Stimulation acid was effectively diverted and injected into the PPL compartment of the well. The post-stimulation production logs verified the success of the stimulation, demonstrating a more uniform distribution across the entire horizontal drain, despite the permeability contrast between the heel and toe compartments.