Well Integrity Risk Assessment - Software Model for the Future

Brechan, Bjørn; Dale, Stein Inge; Sangesland, Sigbjørn

doi:10.4043/28481-ms

Cited by 5 publications

References 18 publications

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Well integrity management in mature fields: a state-of-the-art review on the system structure and maturity

Yakoot

Elgibaly

Ragab

et al. 2021

J Petrol Explor Prod Technol

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Nowadays, oil and gas (O&G) fields are maturing and creating new threats. This urged the operating companies and industry researchers to have intensive focus on well integrity (WI). Building Well Integrity Management System (WIMS) establishes standardized criteria to guarantee that integrity of all wells is preserved during their lifespan, functions properly in healthy condition, and is able to operate consistently to fulfill the expected production/injection demands. Moreover, exploration and production (E&P) companies put Health, Safety, and Environment (HSE), assets, production, local and public image as top priority in their businesses. Having effective WIMS at all times and throughout all well phases reduces the frequency of major integrity failures and thus helps companies to be on track regarding the aforementioned considerations. In this paper, we present a comprehensive review on the system structure and maturity of WIMS in mature fields. This state-of-the-art review highlights the efforts made by different O&G operators all over the world to develop and start application of WIMS, which varies widely due to differences in the main WI challenges that are recurring in each field or concession. Moreover, it lists the goals and expounds the stages of launching effective WIMS. In addition, the key elements, around which the WI program is structured, are discussed and presented for various O&G operators. The major five elements of accountability and responsibility, well operations procedures, well intervention procedures, tubing and casing integrity program, and wellhead and X-tree maintenance are overviewed. Furthermore, this paper assesses WIMS sustainability through demonstration of WI maturity models, scrutiny of maturity levels, and analysis of transformative elements to convert WIMS into strategic framework. Risk management systems as well as application of analytics in WIMS are also covered and thoroughly discussed. In reviewing the literature covering different assets—all over the world for the last 15 years—it was found that real progress was made in WI area, and WIMS established in many operating companies through different approaches. However, the introduced systems lack universality and few of them are applying artificial intelligence as powerful tool for boosting the system. The most obvious finding to emerge from the analysis is that WIMS is crucial system that must be implemented and matured for well lifecycle. The findings of this study can help operating companies for better framing of key pillars to have robust and operable WIMS throughout different fields and concessions, hence improving the well integrity performance worldwide.

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Well integrity management in mature fields: a state-of-the-art review on the system structure and maturity

Yakoot

Elgibaly

Ragab

et al. 2021

J Petrol Explor Prod Technol

View full text Add to dashboard Cite

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Work Process and Systematization of a New Digital Life Cycle Well Integrity Model

Brechan¹,

Teigland²,

Sangesland³

et al. 2018

Day 1 Wed, April 18, 2018

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This paper outlines an extract of a software model for digitalization of the processes supporting upstream activities for onshore and offshore fields. Digitalization in this context means full automation of planning and a step change in the daily well integrity work. The planning process will produce digital programs and proceduresunderstandable to humans and computers. The software comprises building blocks for every engineering calculation. These are interlinked andconstructed such that their planning capacity can be improved by the users. Today, humans drive every step in engineering and planning. Digital well planning and operations will shift the role of humans towards feeding the planning process with experiences in digital format. Changing from text based learning to digital experience will improve planning and operations. Digitalization can also provide digital standards, governing documentation and automate administrative routines such as invoicing. Visualization of wells, their components, barrier envelopes and elements from plan to "as installed" will form a 3D interactive interface where users of different roles can retrieve information and see relevant engineering, modelling and integrity status. The software is planned to be cloud based and exploit local graphics hardware for optimal performance and response. This article gives an introduction to the planned functionality of a new Digital Life Cycle Well Integrity Model (LCWIM) which is under development. In addition to an overview of the functionality, digitalization is exemplified by automation of one of the LCWIM modules, namely casing wear prediction. The LCWIM will produce digital programs and procedures, which is a foundation for the next step in digitalization: automation of the drilling process. The focus of this paper is to depict a digital work process concerning well planning giving input to the operational phase and well integrity.

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Well Integrity – Managing the Risk Using Accurate Design Factors

Brechan¹,

Sangesland²,

Dale³

2019

Day 1 Tue, May 14, 2019

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Wells closed in due to integry issues compose large volumes of recoverable hydrocarbons. In recent years, there has been advances in the understanding of pipe performance. The understanding of these advances is kept with a few specialists, and the industry standard remains unchanged for most engineers working with well intergrity. This paper shed light on these advances and the impact they have to well integrity. A modest estimate for an average well is an upfront saving potential of ~$45,000 USD for tubulars and a reduction of more than 50 metric tons of CO2 saving of the environment. The larger values, however, is with wells closed in due to integrity marginally under the acceptable. This article shows a hidden design margins. On average, pipe resistance to collapse is ~10 to 25% above the industry standard calculations. And for burst design, the real limit is often more than 7% higher than the industry standard calculations. Well integrity is a discipline ensuring safe hydrocarbon recovery on behalf of an operator. Every well is scrutinized and every signal outside the set boundaires from a well is ensued until the integrity is understood and a decision can be made to safely produce or to suspend the well. Well integrity is based on performance of the equipment in the barrier envelopes. Pipe is an important element in both the primary and secondary envelopes. Following a better understanding of pipe integrity, a new integrity work flow is proposed. Well Integrity is a relatively young discipline, where guidelines and stanards have evolved significantly over the last decade. There are still several important issues to be standardized, such as the minimum integrity information to be defined for a well. Examples are operational parameters such as (assumed) effective hole diameter, cementing parameters (rate, preflush, slurry, etc.) which have an impact to the integrity. Other important information to standardize is the restrictions in pressure testing of casing to avoid damage of the cement sheaths. Finally, this article proposes "information management" as the 4th element in the definition of well intergrity. The digitalization wave washing over the industry is about making optimal use of data, which is essential to make good decision in well integrity as much as any other area in the oil and gas industry.

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Well Integrity Risk Assessment - Software Model for the Future

Cited by 5 publications

References 18 publications

Well integrity management in mature fields: a state-of-the-art review on the system structure and maturity

Well integrity management in mature fields: a state-of-the-art review on the system structure and maturity

Work Process and Systematization of a New Digital Life Cycle Well Integrity Model

Well Integrity – Managing the Risk Using Accurate Design Factors

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