Estudo da incorpora??o de res?duos de perfura??o para aplica??o em cimenta??o de po?os de petr?leo

• Main Author: Dantas, Renato Pereira Pinto
• Other Authors: 00957245408
• Language: Portuguese
• Published: Universidade Federal do Rio Grande do Norte 2016
• Subjects: CNPQ::CIENCIAS EXATAS E DA TERRA::QUIMICA; Cascalho; Perfura??o; Fluido de perfura??o; Cimenta??o; Reutiliza??o; Rejeitos s?lidos; Meio ambiente
• Online Access: http://repositorio.ufrn.br/handle/123456789/19675

Submitted by Automa??o e Estat?stica ([e-mail]) on 2016-01-26T17:52:57Z No. of bitstreams: 1 RenatoPereiraPintoDantas_DISSERT.pdf: 1885998 bytes, checksum: a969cb64bed868735a33f1dacbb2d9f1 (MD5) === Approved for entry into archive by Arlan Eloi Leite Silva ([e-mail]) on 2016-01-28T19:48:31Z (GMT) No. of bitstreams: 1 RenatoPereiraPintoDantas_DISSERT.pdf: 1885998 bytes, checksum: a969cb64bed868735a33f1dacbb2d9f1 (MD5) === Made available in DSpace on 2016-01-28T19:48:31Z (GMT). No. of bitstreams: 1 RenatoPereiraPintoDantas_DISSERT.pdf: 1885998 bytes, checksum: a969cb64bed868735a33f1dacbb2d9f1 (MD5) 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.