Tensoativo derivado do ?cido c?trico: s?ntese e aplica??o em fluidos de perfura??o de emuls?o inversa

• Main Author: Moreira, Giselle Pereira
• Other Authors: 18822851404
• Language: Portuguese
• Published: Universidade Federal do Rio Grande do Norte 2016
• Subjects: CNPQ::CIENCIAS EXATAS E DA TERRA::QUIMICA; Emulsificante; Tens?o superficial; An?lise termogravim?trica; Fluido de perfura??o
• Online Access: http://repositorio.ufrn.br/handle/123456789/20284

Submitted by Automa??o e Estat?stica ([e-mail]) on 2016-04-25T20:37:14Z No. of bitstreams: 1 GisellePereiraMoreira_DISSERT.pdf: 2433742 bytes, checksum: d2cf05db4d69f9db9774ee92c4f96457 (MD5) === Approved for entry into archive by Arlan Eloi Leite Silva ([e-mail]) on 2016-04-26T23:11:44Z (GMT) No. of bitstreams: 1 GisellePereiraMoreira_DISSERT.pdf: 2433742 bytes, checksum: d2cf05db4d69f9db9774ee92c4f96457 (MD5) === Made available in DSpace on 2016-04-26T23:11:44Z (GMT). No. of bitstreams: 1 GisellePereiraMoreira_DISSERT.pdf: 2433742 bytes, checksum: d2cf05db4d69f9db9774ee92c4f96457 (MD5) Previous issue date: 2010-02-12 === Ag?ncia Nacional do Petr?leo - ANP === Este trabalho descreve a s?ntese e o estudo da aplica??o em fluido de perfura??o de um novo tensoativo (Tri-?ster Lipof?lico - TEL) obtido a partir de ?cido c?trico com octanol. A rea??o foi acompanhada por cromatografia em camada delgada (CCD) e o produto, ap?s a purifica??o, foi caracterizado por resson?ncia magn?tica nuclear de pr?ton e carbono (RMN H1 e C 13), an?lise termogravim?trica e de tens?o superficial em ?leo e ?gua. Atrav?s de testes comparativos com dois produtos comerciais usados em campo, avaliou-se o desempenho, como emulsificante, do TEL em fluidos ? base de ?ster, n-parafina e biodiesel de mamona nas raz?es ?leo/?gua (ROA) 70/30 e 60/40. Posteriormente, esses fluidos foram envelhecidos em estufa rotativa a 200 ?F durante 16 h, sendo ent?o realizadas medidas reol?gicas e de estabilidade el?trica a 135 ?F, separa??o de fase ap?s sete (7) dias em repouso e volume de filtrado em alta press?o e alta temperatura. O comportamento reol?gico foi avaliado a partir das curvas de fluxos. Observou-se, tamb?m, que estes apresentaram comportamento similares aos dos fluidos usados em campo (Binghamiano e pseudopl?stico com limite de escoamento). Os testes laboratoriais mostraram que o TEL reduziu o volume de filtrado e promoveu um aumento de estabilidade mec?nica e t?rmica. === This work describes the synthesis and study of the application of a new surfactant (Triester Lipophilic ? TEL) obtained by citric acid with octanol. It is reaction was followed by thin layer chromatography (TLC) and after purification the product was characterized by proton and 13 ? carbon nuclear magnetic resonance spectroscopy ( H and 13C NMR), thermogravimetric analysis (TGA) and surface tension analysis of oil-in-water emulsions. The TEL performance as surfactant in ester, n-paraffin and biodiesel based drilling fluids on the 70/30 and 60/40 water- oil rations (WOR) was evaluated by comparative tests of two commercial products used in the fields. These drilling fluids were aged in roller oven at 200 0 F during 16 h. The rheological and electric stability measurements were carried out at 135 ?F, the phase separation was evaluated after seven days at rest and the filtrate volume of drilling fluids was determined at high temperature and high pressure. The rheological behavior of the drilling fluids was evaluated by the flow curves. The results showed that the drilling fluids studied here presented Binghamian behavior as well as the used in the oil fields. The laboratory tests showed that the TEL reduced the filtrate volume and promoted the enhance of the thermal and mechanical stabilities.