Desenvolvimento de fluidos de perfuração poliméricos a base de microemulsões e avaliação de suas propriedades
The use of drilling fluids ensures greater efficiency of oil drilling, as they perform a number of functions and are capable of profoundly influencing this process, both improving or hindering the drilling process. The different types of drilling fluids and their applicability cause constant stud...
Spremljeno u:
| Glavni autor: | |
|---|---|
| Daljnji autori: | |
| Format: | Dissertação |
| Jezik: | pt_BR |
| Izdano: |
Brasil
|
| Teme: | |
| Online pristup: | https://repositorio.ufrn.br/jspui/handle/123456789/26683 |
| Oznake: |
Dodaj oznaku
Bez oznaka, Budi prvi tko označuje ovaj zapis!
|
| Sažetak: | The use of drilling fluids ensures greater efficiency of oil drilling, as they perform a number
of functions and are capable of profoundly influencing this process, both improving or
hindering the drilling process. The different types of drilling fluids and their applicability
cause constant studies on their formulation. Thus, microemulsion systems (SME's) have been
evaluated as a good proposal among the additives used in the formulation of these fluids,
given that these systems present lubricity and stability that can be transferred to the drilling
fluid. This work aimed to develop drilling fluids using oil in water microemulsions (ME's), as
well as to analyze their properties compared to the literature. For this, several SMEs were
initially tested in order to find the one that presented a good oil in water ME region to prepare
the fluid. The system found was composed of industrial water and glycerin in the aqueous
phase, Alkonat 70 nonionic surfactant and paraffin or olefin as the organic phase. From these
systems, an experimental design was elaborated to evaluate the influence of the percentage of
glycerin in the aqueous phase and the NaCl concentration in the properties of the drilling
fluid, finding an optimized fluid whose characterization was made later. The results showed
that microemulsion fluids presented as an alternative for drilling fluids, considering that their
rheological properties were considered satisfactory even after the aging of the fluids, in
addition to presenting very low fluid loss control volumes. Besides that, the optimized fluid
presented 24.5% of glycerin in de microemulsion aqueous phase and 2.55 g of NaCl as an
obturant of the fluid and it was evaluated as a fluid with satisfactory rheological and filtrate
properties according to de Petrobras N-2604 standard and have better properties than aqueous
fluid, as well as similar or better properties than non-aqueous fluids that were studied in the
literature. |
|---|