Banca de QUALIFICAÇÃO: IANE BARBOSA AUGUSTO DOS SANTOS

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
STUDENT : IANE BARBOSA AUGUSTO DOS SANTOS
DATE: 30/01/2026
TIME: 09:15
LOCAL: via meet
TITLE:

STUDY OF NPOM AND ORGANOPHILIC ATAPULGITE IN AQUEOUS DRILLING FLUID

KEY WORDS:

Drilling fluids, nanoparticles, attapulgite, thermal capacity.

PAGES: 80
BIG AREA: Engenharias
AREA: Engenharia Química
SUBÁREA: Tecnologia Química
SPECIALTY: Petróleo e Petroquímica
SUMMARY:

Constant technological innovation in the oil exploration industry improves well drilling performance. The application of nanofluids has gained prominence in the oil industry, particularly in the enhancement of petroleum fluids. The incorporation of metal oxide nanoparticles, such as cobalt oxide, contributes to improved thermal, rheological, and filtrate control properties due to its thermal and chemical stability. In this context, organophilized attapulgite clay, also called organophilized attapulgite, stands out for its ability to act as a viscosifier in saline environments, forming derived suspensions and contributing to the formation of low-permeability coatings for aqueous fluids. The application of these materials offers a promising alternative for the development of more efficient drilling fluids, especially in highly complex operations, such as those performed in deepwater. The addition of nanomaterials and clay can represent a more efficient and sustainable alternative to traditional methods, contributing to well pressure stability, reducing fluid losses to the formation, and preventing operational problems. In this context, this study evaluates the use of nanomaterials and attapulgite clay in aqueous drilling fluids, highlighting the benefits provided by nanotechnology. The physicochemical and rheological properties of fluids containing nanomaterials such as cobalt oxide (CoO) and attapulgite clay at different concentrations were investigated. Furthermore, filtration characteristics were assessed using an HPHT cell at temperatures of 25, 50, and 70°C, as well as thermal performance with heating to 60°C and cooling to 8°C. The results demonstrated that fluids containing nanomaterials and clays were thixotropic at 70°C. At concentrations of 0.25% and 0.5%, with attapulgite clay, it presented a lower filtrate volume and the fluid containing 0.25% cobalt oxide showed better thermal retention, evidencing its potential in improving the efficiency of detailing fluids.

COMMITTEE MEMBERS:
Presidente - 1531209 - VANESSA CRISTINA SANTANNA
Interna - 1679234 - JENNYS LOURDES MENESES BARILLAS
Externo à Instituição - RHAUL PHILLYPI DA SILVA - UFS