bluuebunny/crossref_metadata_2025_split huggingface dataset:
A Novel Solution on Integration of Engineering and Geology
Authors: Zhu Jun , Zhang Wei , Zeng Qijun , Liu Zhenxing , Liu Jiayi , Liu Junchen , Zhang Fengxia , He Yu , Xia Ruochen 
Published: May 2023

Abstract
In the past decade, the operators and service companies are seeking an integration solution which combines engineering and geology. Since our drilling wells are becoming much more challenging than ever before, it requires the office engineer not only understanding well construction knowledge but also need learn more about geology to help them address the unexpected scenarios may happen to the wells. Then a novel solution should be provided to help engineers understanding their wells better and easier in engineering and geology aspects. The digital twin technology is used to generate a suppositional subsurface world which contains downhole schematic and nearby formation characteristics. This world is described in 3D modelling engineers could read all the information they need after dealt with a unique algorithm engine. In this digital twin subsurface world, the engineering information like well trajectory, casing program, BHA (bottom hole assembly) status, are combined with geology data like formation lithology, layer distribution and coring samples. Both drilling or completion engineers and geologist could get an intuitive awareness of current downhole scenarios and discuss in a more efficient way. The system has been deployed in a major operator in China this year and received lot of valuable feedback from end user. First of all, the system brings solid benefits to operator's supervisors and engineers to help them relate the engineering challenges with according geology information, in this way the judgement and decision are made more reliable and efficiently, also the solution or proposal could be provided more targeted and available. Beyond, the geology information from nearby wells in digital twin modelling could also provide an intuitional navigation or guidance to under-constructed wells avoid any possible tough layers via adjusting drilling parameters. This digital twin system breaks the barrier between well construction engineers and geologists, revealing a fictive downhole world which is based on the knowledge and insight of our industry, providing the engineers necessary information to support their judgement and assumption at very first time when they meet downhole problems. For example, drilling engineers would pay extra attention to control the ROP (rate of penetration) while drilling ahead to fault layer at the first time it is displayed in digital twin system, which prevent potential downhole accident and avoid related NPT (non-production time). The integration of engineering and geology is a must-do task for operators and service companies to improve their performance and reduce downhole risks. Also, it provides an interdisciplinary information to end user for their better awareness and understanding of their downhole asset. Not only help to avoid some possible downhole risks but also benefit on preventing damage reservoir by optimizing the well construction parameters.
Optimization of Lateral Length and Risk Assessment Based on Wellbore Undulations
Authors: AlGobi Ghaleb. A. , Samuel Robello 
Published: May 2023

Abstract
The success of drilling new horizontal wells depends on connecting the well’s surface location with the targeted formation while achieving the desired lateral length. However, the choice of the surface locations can be limited due to difficulties obtaining the permits to drill on these locations. This creates more deviated wellbore designs and decreases the optimized lateral length. To avoid this, a risk matrix will be developed to evaluate the maximum lateral length for different surface locations.
The first step to creating the risk matrix is to derive a geometry-focused torque and drag model. This model will utilize the wellbore’s step-out and geometrical torsion, which are resulting of both a deviated well design and a far surface location. In this paper, the step-out for any given well path design will be considered as the sum of the horizontal projections of all the deviated segments of the well trajectory above the last curve’s KOP. The calculation of the step-out will be incorporated into the model, then will be used to calculate the maximum lateral length versus the step-out.
A torque and drag model with the simplicity of the soft-string model was created while taking into consideration the wellbore’s geometrical torsion to capture the effect of the well’s trajectory on the axial forces and the torque. This effect will partially simulate the deformation of the drill pipe using simplified mathematical expressions comparing to the calculations of the stiff-string model. This methodology resulted in the model to be more sensitive to the axial force than the torque.
The built risk matrix uses the derived model to highlight one of two mechanisms that determine the dominant constraint that limits the drilling process: either reaching the maximum hook load or the maximum torque, based on the wellbore design. These limits depend on the rig’s capacity and the drilling company. The risk matrix summarizes multiple designs to conveniently compare between different step-out values and their respective maximum later lengths. The risk assessment is quantitative rather than qualitative and is reflected as the percentage used of the dominant constraint for the given designs and the interval of the lateral lengths at which this percentage is reached. The optimum surface location with its step-out is then chosen easily from the created risk matrix.
The built model takes a middle position between the soft-string model and the stiff-string model by capturing the geometrical torsion along the wellbore trajectory. This approach enhances the geometrical optimization when calculating the axial force and the torque. The simplified mathematical derivation incorporates the step-out into the model, thus creating the risk matrix to optimize the lateral length based on the surface location.
Improvement of Slot Recovery Performance with Hollow Bit Technology by Recovering Fully Cemented Dual Casing in Offshore Abu Dhabi Oil Field
Authors: Fukuda K. , Biyanni H. , Toma M. , Moslim S. , Toki T. , Zaabi A. Al 
Published: May 2023

Abstract
Hollow bit method was introduced and implemented in Offshore Abu Dhabi Field to eliminate the cement quality uncertainty and improve the slot recovery performance. Hollow bit method improved the overall slot recovery performance by 40% compared to other slot recovery methods, reducing operation duration from 20.8 days to 12.5 days. In this paper, hollow bit technical overview and best practices which can be implemented to similar application are presented
Successful Fit-For-Purpose Coiled Tubing Catenary Sand Cleanout on a Monopod Platform at Offshore East Malaysia – Operator Case Study
Authors: Awang Atim F. , Sipangkui R. B. , Karim M. , Pacifico E. , Aripin I. , Sujavudin M. , Sy M Shahril S. , B M Nor M Abshar , Fidzrus I. 
Published: May 2023

Abstract
Coiled Tubing (CT) operations on small platforms pose multiple challenges, more so at a monopod. Resolution of apparent challenges, including worksite limitations and returns handling, led to new issues that needed to be addressed and overcome. This paper will discuss in detail, the case study of a CT Catenary campaign that addressed all challenges resulting in the first execution of high-complexity sand cleanout operations on a monopod platform at offshore Sabah, Malaysia by the Operator.
The approach commonly used in the region to perform sand cleanout at small platforms is using a work barge or workboat-assisted CT with sand-handling equipment placed on the platform's main deck. For this monopod facility, in addition to adopting a CT catenary solution to reduce monopod deck loading, further load reduction requirements on the structure necessitated a reassessment of sand-handling equipment placement, specifically on the supporting workboat. This approach required the development of safe, effective, and practical returns management between the workboat and the platform.
During the planning stage, the team established that a compact and fit-for-purpose operational set-up was required to meet the approved project economics. It was identified that detailed program engineering, comprehensive operational planning, personnel competency upskilling, and specific equipment optimizations would collectively be critical to the success of the sand cleanout campaign. In addition to the main scope of removing sand build-up in the well completions, the campaign also involved additional CT fishing and pumping activities. These additional scopes required the work program to be sufficiently robust to address potential operational contingencies yet flexible enough to meet all scope requirements for the equipment layout without the workboat having to return to the mobilization port for layout changes.
The value presented in this paper comes from the comprehensive and detailed discussion of all technical and operational issues resolved by the Operator and its Solution Partner, in performing CT catenary cleanouts at a remote, small-size monopod facility. The paper also shares the final configuration and arrangement by which the campaign was executed and completed for insight sharing and further improvements.
Study on the Wellbore Reconstruction Refracturing Technology Based on Expandable Tubular
Authors: Guo H. J. , Zhou Y. , Wang B. D. , Zhang Q. L. , Xu B. G. , Jao T. , Zhou S. H. 
Published: May 2023

Abstract
Refracturing is a promising means to improve the output and estimated ultimate recovery of shale oil and gas resources, which is an efficient method to recover the productivity of low permeability old wells. Refracturing has achieved good results in the development of shale gas wells in North America, and has increased output and decreased the extraction cost significantly of shale gas resources. The disadvantage of unable to control the fracturing fluid accurately of the conventional temporary plugging diverting refracturing technologies like chemical particulates has been exposed in the applications.
Wellbore reconstruction technology based on the solid expandable tubular (SET) was studied in this paper, which is a permanent plugging diverting refracturing technology with a high sealing effect and simple operation. Technical principles, tool structures and construction processes were analyzed and relative laboratory tests were conducted to verify the feasibility of this technology. Meanwhile, comparisons between expandable tubular technology and other refracturing technologies were developed to analyze the application prospect in shale oil and gas resources.
The indoor tests indicated that wellbore reconstruction technology based on expandable tubular can plug the perforation on the casing effectively with certain sealing pressure, which showed that this technology can realize the wellbore reconstruction to create the wellbore conditions for the next fracturing work. Compared with other temporary plugging refracturing technologies, the expandable tubular technology can achieve accurate control of fracturing fluid and has a better effect of refracturing work. At the same time, it has the advantages of simple operation and big internal diameter compared to other wellbore reconstruction methods like casing plugging technology, which means that bigger displacement can be used and better effect can be achieved in the refracturing work.
The conclusions obtained in this paper can promote the development of wellbore reconstruction technology based on expandable tubular, which provides a theoretical reference for the design of the refracturing work in shale oil and gas resources.
Effectiveness and mediators of change of an online CBT intervention for students with adjustment disorder – study protocol for a randomized controlled trial
Authors: Juszczyk-Kalina Aleksandra , Holas Paweł , Farchione Todd 
Published: May 2023

Abstract
Background
Adjustment problems and disorders are highly prevalent among university students worldwide. Unfortunately, only half of students in need receive psychological help. Furthermore, there is a paucity of studies evaluating prevalence, predictors and interventions for adjustment disorders in students. For these reasons, new, more scalable forms of treatment for students with adjustment disorder must be developed, evaluated and implemented. The aim of the study is to determine the effectiveness of an online transdiagnostic cognitive behavioural intervention for students experiencing adjustment disorder and to evaluate mediators of change.
Method/Design
In this three-arm randomized controlled trial, we plan to recruit 214 Polish students diagnosed as having an adjustment disorder. Participants who meet initial eligibility criteria will be randomly assigned to one of three conditions: 1) 6-week online cognitive behavioural therapy intervention based on the Unified Protocol, 2) 6-week online progressive muscle relaxation training as an active control group, or 3) waiting-list control group. Both the internet and active interventions are asynchronous, unguided and interactive. Assessments will consist of self-report questionnaires, daily diary measures, neurocognitive tasks for the evaluation of cognitive functioning, and recently received grades at university. Measures will be taken at baseline, at post-treatment and at 1-month follow-up. Daily diary measures will be taken during the first and last week of the interventions. Primary outcome measures will include adjustment disorder severity; secondary outcome measures will include other negative (psychopathology: depression, anxiety and stress) and positive (life satisfaction and level of academic adjustment) indexes of mental health as well as and process measures (e.g., mindfulness, experiential avoidance, cognitive fusion).
Discussion
The current study, to our knowledge, is to be the first evaluating the effectiveness of a psychological intervention for students with adjustment disorder. Therefore, it may have important practical implications for students with this disorder. It has the potential to guide the development of a scalable, validated treatment option.
Trial registration
Clinical Trials, NCT05768308, registered 14 March 2023, https://www.clinicaltrials.gov/ct2/show/NCT05768308
Oral Health Provider Perspective on Facilitators and Barriers to Rare Disease Diagnosis and Management
Authors: Beisang Arthur Allen , Dupuis Danielle , Cady Rhonda , Nelsen Karl , Beiraghi Soraya , Barnes Erica 
Published: May 2023

Abstract
Background
Approximately 15% of rare diseases present with orofacial manifestations, placing oral health providers in front-line positions for timely diagnosis. A recent study investigated barriers to care from the perspective of people living with a rare disease and found access to oral health care a key barrier. The goal of our study was to investigate this disparity by assessing the ‘state of rare disease management and diagnosis and subsequent barriers,’ as reported by oral health providers actively practicing in a single midwestern state.
Results
Seventy oral health providers completed the survey. Overall, these providers were not at all or somewhat familiar with rare disease, and most felt this knowledge adequate for their practice needs. Most oral health providers referred to specialists and few were comfortable accepting care for a person with a rare disease. Most indicated formal dental training programs did not adequately cover rare disease diagnosis and management and felt additional professional education would be beneficial. Dental insurance was a barrier to all aspects of care (diagnosis, referral, treatment plan) and became more acute for people with rare disease transitioning from pediatric to adult oral health providers.
Conclusions
Oral health providers are often the first point of contact for people experiencing symptoms of rare disease and play a key role in identifying, diagnosing, and treating these conditions. Strategies to enlist oral health providers as equal partners in the rare disease health care team is essential to timely diagnosis and management. This reality is only possible with timely access to knowledgeable and confident oral health providers for both children and adults. For people living with a rare disease in the U.S., oral health access is determined by individual state policies that define a limited set of conditions covered by dental insurance plans. Excluded conditions, which often include congenital anomalies and birth defects, must be deemed medically necessary by the insurer before coverage is applied. The responsibility for ‘making the argument’ for medical necessity disproportionately falls to patients, families, and oral health providers and compounds health inequities experienced by people living with a rare disease.
A New Arbitrary Shaped Spatial Clustering
Authors: prasad saurabh , Tripathi Sony , Yadav Narendra kumar , Tiwari Gaurav 
Published: May 2023

Abstract
Clustering is one of the important and widely used techniques for exploratory data analysis. In this paper we have proposed an arbitrary shaped clustering technique for spatial datasets. This method consists of two phases. In the first phase grid based technique is being applied to get the representative means and then identify the arbitrary shaped clusters with these means in the second phase. We have compared our technique with other techniques for comparison purpose.
Leaf litter contributes to the obstacles of Cynanchum auriculatum Royle ex Wight continuous cropping
Authors: Shen Min , Wu Limeng , Zhang Yanzhou , Wang Huanli , Xiao Jiaxin , Kang Yijun 
Published: May 2023

Abstract
Aims
To test a hypothesis that fallen leaf litter results in the continuous cropping obstacle (CCO) in Cynanchum auriculatum Royle ex Wight (CA) via growth promotion and invasion reinforcement of soil-borne fungal pathogen.
Methods
Water extracts of leaf (LE) and root (RE) were compared for their effects on seed germination, seedling growth indices, and plant defense enzymes activities. Besides, the impacts of LE on a fungal pathogen were investigated under laboratory conditions following isolation and verification. Then, the effects of LE on soil microbial communities were determined by using high-throughput sequencing technology.
Key Results
A fungal strain D1 belonging to Fusarium solani causing root rot disease was isolated and confirmed for its potential contribution to CCO. Both LE and RE inhibited seed germination, seedling growth, and plant defense enzymes activities. Extracts especially LE coupled with D1 aggravated the impacts. Apart from the induction of propagation of D1 in soil, extracts could also promote hypha weight, spore number, and spore germination rate of D1 under the culture conditions. Compared with RE, LE showed more promoting-effects on the pathogenesis-related enzymes activities of D1. Moreover, caffeic acid and ferulic acid were the possible active substances contributing to the events. Besides, not bacterial but fungal community were shifted by LE especially by LE+D1.
Conclusions
These results suggested that water extract of leaf litter promoted the growth and propagation of strain D1, and enhanced its pathogenicity towards CA, which synthetically contributed to the CCO process.
Modelling the dynamic connectedness among commodity prices, banking sector’s financial soundness, and macroeconomic variables in Ghana
Authors: Kyei Collins Baffour , Cantah William Godfred , Junior Peterson Owusu 
Published: May 2023

Abstract
The study explores the dynamic connectedness among international commodity price, banking sector’s financial soundness (BSFSI) and some selected macroeconomic variables in Ghana. To achieve this, the study employed the TVP-VAR connectedness and a robustness technique: Wavelet Multiple. We utilise monthly data of three (3) commodity prices (cocoa, gold and crude oil), seven BsFSI and six (6) macroeconomic variables in Ghana. In addition, the global economic policy uncertainty (GEPU) was used as a control variable as a gauge of external shock. The monthly data spanned January 2007 to March 2022 to include some major economic, political and health events, yielding 183 datapoints. We found strong degree of connectedness among international commodity prices, BsFSI, and macroeconomic variables in Ghana at an estimate of 68.36% for the total connectedness index. However, the connectedness value changes across time which corroborates the adaptive market hypothesis. We demonstrate strong evidence of interdependence and contagion among the variables. Findings from the study requires that the government should broaden its production and export base to have more diverse sources of economic growth, enabling it to manage the erratic nature of earnings tied to commodities exports on the financial stability of Ghana.
Analysis of three dimensional Rayleigh-type waves in a layered structure
Authors: Saha Shalini , Pramanik Snehamoy , Pradhan Nirakara 
Published: May 2023

Abstract
The present article aims to explore three dimensional Rayleigh-type waves in a layered structure composed of transversely isotropic material. The technique of potential function is utilized to solve the problem. With the aid of appropriate boundary conditions, a dispersion relation (illustrating variation of velocity with frequency) is established for the three dimensional Rayleigh-type waves which depends on the elastic constants. It is worth mentioning that the deduced results are found to be in well agreement with the pre-established and the classical results. Moreover, the obtained results are computed numerically and are illustrated graphically for distinct models. The study further computes the phase velocity of Rayleigh-type waves for the distinct models. The outcomes of the present study provide a better insight into numerous engineering and mechanics problems for various purposes. More specifically, understanding the dispersive nature of Rayleigh waves in three dimensions further help in non-destructive testing, structural health monitoring, exploration of oil, fuels and minerals, and delineating soil properties for geotechnical studies. Hence provides sufficient motivation for exploring the same in similar kinds of structures.
Single-cell characterisation of tissue homing CD4+ and CD8+ T cell clones in immune-mediated refractory arthritis
Authors: Bhattacharya Dipabarna , Theodoropoulos Jason , Nurmi Katariina , Juutilainen Timo , Eklund Kari K. , Koivuniemi Riitta , Kelkka Tiina , Mustjoki Satu , Lönnberg Tapio 
Published: May 2023

Abstract
Background Immune-mediated arthritis is a group of autoinflammatory diseases, where the patient’s own immune system attacks and destroys synovial joints. Sustained remission is not always achieved with available immunosuppressive treatments, warranting more detailed studies of T cell responses that perpetuate synovial inflammation in treatment-refractory patients.Methods In this study, we investigated CD4 + and CD8 + T lymphocytes from the synovial tissue and peripheral blood of patients with treatment-resistant immune-mediated arthritis using paired single-cell RNA and TCR-sequencing. To gain insights into the trafficking of clonal families, we compared the phenotypes of clones with the exact same TCRß amino acid sequence between the two tissues.Results Our results show that both CD4 + and CD8 + T cells display a more activated and inflamed phenotype in the synovial tissue compared to peripheral blood both at the population level and within individual T cell families. Furthermore, we found that both cell subtypes exhibited clonal expansion in the synovial tissue.Conclusions Our findings suggest that the local environment in the synovium drives the proliferation of activated cytotoxic T cells, and both CD4 + and CD8 + T cells may contribute to tissue destruction and disease pathogenesis.