Banca de DEFESA: JOAO PAULO NOGUEIRA DE ARAUJO

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : JOAO PAULO NOGUEIRA DE ARAUJO
DATE: 14/04/2023
TIME: 09:00
LOCAL: meet.google.com/ruv-djvd-avt
TITLE:

CONTRIBUTION TO USING RELIABILITY ON WELL CASING DESIGN

KEY WORDS:

Reliability design, Structural Reliability. Well Casing. Well Integrity.

PAGES: 53
BIG AREA: Engenharias
AREA: Engenharia Civil
SUBÁREA: Estruturas
SPECIALTY: Mecânica das Estruturas
SUMMARY:

The casing system is essential to guarantee integrity on oil wells. To ensure a correct casing design, equations and methodologies are suggested by international standards for resistances and loads that should be verified if the casing system designed is adequate to the well throughout its life. One example of such standard is API/TR 5C3, which on its 2008 revision added suggestions for equations and methodologies to use reliability techniques on casing design, going even as far as supplying statistic characterization of various casing tubulars using a database made of different manufacturers from along a few decades. Even so, the use of these reliability techniques and tools are still restricted to specific analyses and are not used as a routine by casing designers. With that in mind, this work aims to study various load cases on a number of casings generally used on oil wells, comparing the results obtained using the standard techniques (Safety Factors - SF) and reliability (Failure Probability - FP). The loads will be equal to the casing resistance considering the Serviceability Limit State (SLS), which is still the most used by casing designers, and would lead to a failure limit (SF = 1.0), with the objective of making a comparison between the results of the techniques. At the end of this work, it is expected to have a better understanding of how much of a risk an FP number actually means, making it easier to add the reliability analysis on regular casing design.

BANKING MEMBERS:
Presidente - 1846598 - EDUARDO TOLEDO DE LIMA JUNIOR
Interno(a) - 1742402 - JOAO PAULO LIMA SANTOS
Externo(a) à Instituição - CHARLTON OKAMA DE SOUZA - PETROBRAS