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Previous issue date: 2014-12-19 / Durante a perfura??o de po?os de petr?leo e g?s natural, s?o gerados res?duos
s?lidos, l?quidos e gasosos. Os fragmentos s?lidos, que s?o denominados
cascalhos, s?o carreados para a superf?cie atrav?s do fluido de perfura??o.
Al?m disso, esse fluido tem a fun??o de resfriar a broca, manter a press?o
interna do po?o, dentre outras. Esse res?duo s?lido ? bastante poluente, pois
tem incorporado al?m do fluido de perfura??o, que possui v?rios aditivos
qu?micos nocivos ao meio ambiente, alguns metais pesados tamb?m danosos,
tais como chumbo. Com o intuito de tornar as atividades menos nocivas ao
meio ambiente, as ind?strias v?m desenvolvendo processos cada vez mais
sustent?veis. Atualmente, est?o sendo estudadas in?meras t?cnicas para
mitigar problemas gerados com res?duos de perfura??o, tais como adi??o do
cascalho na composi??o de tijolos solo-cimento para constru??o em alvenaria,
nas matrizes argilosas para a fabrica??o de tijolos maci?os de alvenaria e
blocos cer?micos e coprocessamento desse res?duo na fabrica??o do cimento.
Desta forma, o presente trabalho tem como objetivo incorporar o cascalho
oriundo da perfura??o em pastas de cimento utilizadas durante as opera??es
de cimenta??o de po?os de petr?leo. O cascalho utilizado nesse trabalho,
oriundo da forma??o Pend?ncias, foi mo?do e separado numa peneira de 100
mesh. Ap?s a moagem, o mesmo foi caracterizado por granulometria a laser,
DRX, FRX. A mat?ria-prima apresentou di?metro m?dio de part?culas na ordem
de 86 mm e estrutura cristalina contendo fases do tipo quartzo e calcita,
caracter?sticos do cimento Portland. Foram formuladas e preparadas pastas de
cimento, com densidade 13 lb/gal, contendo diferentes concentra??es de
cascalho, e realizados ensaios de caracteriza??o API SPEC 10 A e RP 10 B.
Os testes de ?gua livre apresentaram valores inferiores a 5,9% e o modelo
reol?gico que melhor descreveu o comportamento das misturas foi o de
pot?ncia. Os resultados de resist?ncia ? compress?o (10,3 Mpa) e estabilidade
( Dr < 0,5 lb/gal), apresentaram valores dentro dos limites estabelecidos para
procedimentos operacionais. Assim sendo, o cascalho oriundo da perfura??o
pode ser utilizado em pastas de cimento Portland para po?os petrol?feros, como
forma de reaproveitamento deste res?duo e redu??o do custo da pasta de
cimento / During the drilling of oil and natural gas are generated solid waste, liquid and
gaseous. These solid fragments, which are known as cuttings, are carried to the
surface through the drilling fluid. Furthermore, this fluid serves to cool the bit,
keeping the internal pressure of the well, and others. This solid residue is very
polluting, because it has incorporated beyond the drilling fluid, which has
several chemical additives harmful to the environment, some heavy metals that
are harmful to the environment, such as lead. To minimize the residue
generated, are currently being studied numerous techniques to mitigate the
problems that such waste can cause to the environment, like addition of cuttings
in the composition of soil cement brick masonry construction, addition of
cuttings on the clay matrix for the manufacture of solid masonry bricks and
ceramic blocks and coprocessing of the cuttings in cement. So, the main
objective of this work is the incorporation of cuttings drilling of oil wells, the
cement slurry used in the cementing operation of the well. This cuttings used in
this study, arising from the formation Pend?ncias, was milled and separated in a
sieve of 100 mesh. After grinding had a mean particle sike in order of 86 mm
and crystal structure containing phases of quartz and calcite type, characteristic
of the Portland cement. Were formulated and prepared slurries of cement with
density 13 lb / gal, containing different concentrations of gravel, and realized
characterization tests API SPEC 10A and RP 10B. Free water tests showed
values lower than 5.9% and the rheological model that best described the
behavior of the mixtures was the power. The results of compressive strength
(10.3 MPa) and stability (Dr <0.5 lb / gal) had values within the set of
operational procedures. Thus, the gravel from the drilling operation, may be
used as binders in addition to Portland cement oil wells, in order to reuse this
waste and reduce the cost of the cement paste.
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/19675 |
| Date | 19 December 2014 |
| Creators | Dantas, Renato Pereira Pinto |
| Contributors | 00957245408, http://lattes.cnpq.br/2357217530716519, Curbelo, Fab?ola Dias da Silva, 87599651420, http://lattes.cnpq.br/6991333478380004, Santos, Luciene da Silva, 27832155515, Braga, Renata Martins, 05165674460, http://lattes.cnpq.br/4603529162393328, Freitas, J?lio Cezar de Oliveira |
| Publisher | Universidade Federal do Rio Grande do Norte, PROGRAMA DE P?S-GRADUA??O EM QU?MICA, UFRN, Brasil |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| Source | reponame:Repositório Institucional da UFRN, instname:Universidade Federal do Rio Grande do Norte, instacron:UFRN |
| Rights | info:eu-repo/semantics/openAccess |
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