The Journey for Digital Well Delivery Technology Adoption: The How and Why

As part of the industry 4.0 revolution, digital technologies are forever changing the way we do things. native cloud applications are able to adapt to specific processes and requirements, particularly those related to well construction planning driven by an automated collaborative solution. The operator of the future will use its engineers mainly for engineering analysis and social interactions, while the system will take over tasks such as orchestration, data mining, and experience management. Based on the definition of a new way of working and the application of new workflows, a thorough trial process was required to evaluate the solution usability and to define the minimum viable product requirements to be developed within a strategic partnership prior to rolling out the technology. The requirement was to enable globally dispersed teams, even across company borders, collaborating through automatically orchestrated processes, supported by knowledge and experience management systems in the background, to deliver a digital drilling program and ultimately accelerate the field development program. The operator decided to prove the concept through a series of pilots within a well-educated well planning team. Major assumptions to the business case were tested while planning actual drilling operations with the purpose to de-risk the value proposition. All different tested elements are captured by the users and the gaps to the final solution are ranked for joint development. The back-end interoperability of the solution supports a fully connected model, where data from subsurface systems can directly feed the well construction planning platform. The automated updates in the end-to-end workflow would ultimately simplify the way drilling engineers work, but also upscale the nature of their work by including many new elements as part of the routing analysis. Supported by the cloud computer power and flexibility, remote working is seamlessly enabled to removing the classic silos and digitally promote the collaboration. Standardization across the whole organization by corporate managed settings reduces iterative control processes. Furthermore, management of change is a key aspect to consider alongside the technical elements. The result of the extended trial confirmed that achieving the minimum viable product requirements of the operators was well within reach and confirmed the operator's value case to a large extent. In this paper we will describe the extended trial process, objectives, and associated workflows, in addition to the collaborative team nominated by both partners. The scope was user centric to assist with competency development and technology adoption. Parallel to confirming the minimum viable product, the extended pilot resulted in a prioritized list of co-developments leading to the full implementation of the operator's vision of a fully integrated well planning workflow.

Optical Soliton Solutions to Gerdjikov-Ivanov Equation Without Four-Wave Mixing Terms in Birefringent Fibers by Extended Trial Function Scheme

Without four-wave mixing terms in birefringent fibers, the extended trial function scheme was used to obtain optical soliton solutions for the coupled system corresponding to the Gerdjikov-Ivanov equation. The procedure reveals singular soliton solutions, bright soliton solutions, and highly important solutions in terms of Jacobi’s elliptic function. And in the limiting case of the modulus of ellipticity, singular and singular-periodic soliton solutions, along with their respective existence criteria.

Extraction of optical solitons in birefringent fibers for Biswas-Arshed equation via extended trial equation method

This article obtains optical solitons to the Biswas-Arshed equation for birefringent fibers with higher order dispersions and in the absence of four-wave mixing terms, in a media with Kerr type nonlinearity. Optical dark, singular and bright soliton solutions are articulated by applying an imaginative integration technique, the extended trial equation scheme. Various additional traveling wave solutions are produced with this integration technique, which include rational solutions, Jacobi elliptic function solutions and periodic singular solutions. From the mathematical analysis some constraints are recognized that ensure the actuality of solitons.

Вариационная модель низкоразмерного магнетика

A variational method with nonlocal trial function is developed for quantum one-dimensional systems. It is applied to the XXZ spin-1/2 chain with an alternating magnetic field. A four-node trial wave function for the fermionic representation of the model is constructed. The results obtained in the model with an extended trial wave function demonstrate a significant increase in the accuracy of the ground state energy in the region of critical behavior compared with the solutions obtained previously. A method for calculation of the spin correlation function are discussed.

A criterion-based approach to systematic and transparent comparative effectiveness: a case study in psoriatic arthritis

Aim: Indirect treatment comparisons are used when no direct comparison is available. Comparison networks should satisfy the transitivity assumption, that is, equal likelihood of treatment assignment for a given patient based on comparability of studies. Materials & methods: Seven criteria were evaluated across 18 randomized controlled trials in psoriatic arthritis: inclusion/exclusion criteria, clinical trial design and follow-up, patient-level baseline characteristics, disease severity, prior therapies, concomitant and extended-trial treatment and placebo response differences. Results: Across studies, placebo was a common comparator, and key efficacy end points were reported. Collectively, several potential sources of insufficient transitivity were identified, most often related to trial design and population differences. Conclusion: Potential challenges in satisfying transitivity occur frequently and should be evaluated thoroughly.