Banca de QUALIFICAÇÃO: YVIS HENRIQUE DE OLIVEIRA

Uma banca de QUALIFICAÇÃO de DOUTORADO foi cadastrada pelo programa.
STUDENT : YVIS HENRIQUE DE OLIVEIRA
DATE: 19/12/2022
TIME: 15:00
LOCAL: Online
TITLE:

POLYESTER RESIN SYSTEM FOR OIL WELL APPLICATION: DEVELOPMENT OF METHODOLOGY FOR ANALYSIS OF COMPRESSION STRENGTH BY ULTRASONIC METHOD (UCA)

KEY WORDS:

Abandonment of oil wells, CSB, P&A, Portland cement, alternative materials, thermosetting resins, polyester resin, PET, TBC, compressive strength, UCA

PAGES: 70
BIG AREA: Engenharias
AREA: Engenharia de Energia
SUMMARY:

Historically, Portland cement has been widely used to carry out the most varied interventions in oil wells. It is known the numerous advantages of using this material. However, in recent years, the use of alternative materials for some types of interventions has increased, as is the case of some abandonments, as they have specific characteristics for application in scenarios where the use of cement is limited to its performance.

Among the alternative materials to cement for oil wells, resins have been gaining prominence due to their compatibility with the fluids contained in the wells. The resins are free of solids and this property increases the success rate of works in wells whose injectivity is too low for the penetration of conventional slurry. Another very interesting feature of the resins is their high compressive strength when compared to conventional cement slurry systems, in addition to their very low permeability.

One of the biggest challenges for the application of alternative materials to replace Portland cement is the control and characterization of its technological properties. The API (American Petroleum Institute) standards, specifically SPEC 10A and RP 10B-2, were developed decades ago with a focus on testing for Portland cement. The adaptation of some procedures for the characterization of alternative materials, such as resins, is the key point to guarantee operational success during field application, especially the compressive strength.

Based on the above, in this work a methodology was developed to analyze the compressive strength (CS) by the ultrasonic method in polyester-resin systems. The control of the CS of the resin systems was carried out through the addition of the chemical inhibitor 4-tert-butylcatechol (TBC).

The response to the addition of TBC in the polyester resin system was quite consistent, as it was possible to observe a variation in the time of onset of CS development, proportional to the percentage of TBC in the system.

COMMITTEE MEMBERS:
Externo à Instituição - BRUNO LEONARDO DE SENA COSTA - UFRN
Interno - 348475 - DJALMA RIBEIRO DA SILVA
Presidente - 1804366 - JÚLIO CÉZAR DE OLIVEIRA FREITAS