Submitted by Jorge Silva (jorgelmsilva@ufrrj.br) on 2017-10-04T17:50:04Z No. of bitstreams: 1 2013 - Leilane da SIlva Lima.pdf: 2571314 bytes, checksum: 6a887a80293fe4214d8df0859a55db54 (MD5) / Made available in DSpace on 2017-10-04T17:50:04Z (GMT). No. of bitstreams: 1 2013 - Leilane da SIlva Lima.pdf: 2571314 bytes, checksum: 6a887a80293fe4214d8df0859a55db54 (MD5) Previous issue date: 2013-03-04 / CNPq / A major environmental issue is the impact caused by the extraction of primary materials and the waste disposal. The industry tries to change that with adjustments in the production chain to reduce impacts to the environment. However, this is a subject that has few studies. This study aimed to evaluate the development of rice plants (Oryza sativa) in soils incubated with waste from drilling oil wells, treated by washing to eliminate the influence of sodium and under two moisture conditions. Two residues generated during the drilling of the well 7-SMC- 50D AL were selected. Subsequently, the residue washing was done in water with the 1:5 proportions, to reduce the effects of sodium. Thus, the washing treatment defined two conditions: washed and unwashed residues. The amount of residue added to the soil was set to achieve concentrations of barium of 300 mg kg-1, 600 mg kg -1 and 900 mg kg-1. The soils were kept in two moisture conditions (70% of field capacity and waterlogged to get a reduced condition). During the incubation of vessels the redox potential (Eh) was monitored until values close to -200 mV was reached, in the reduction condition. After reaching these values, we waited up to 30 days before transplanting the rice seedlings and the test starting. Samples were collected from each experimental unit, and the elements barium, iron, manganese, calcium, sodium and potassium were analyzed. The rice was planted, and went throughout the vegetative cycle (approximately 3 months) until the plants were harvested for analysis. The results showed that the residues from the dryer and the centrifuge, with and without washing, in the oxidized condition, did not affect the dry matter yield of the rice plants. However, the soil reduction condition promoted increasing concentrations of barium absorbed by plants, and reduced the iron level. In the treatments with the residue and reduction condition, the solubilization of barium combined with a moderate iron deficiency possible interfered on dry matter production. / Uma grande quest?o ambiental ? o impacto causado pela extra??o de materiais prim?rios e pela deposi??o de res?duos. A ind?stria tenta mudar esse cen?rio com adequa??es ao longo da cadeia produtiva para diminuir os impactos ao meio ambiente. Entretanto, essa ? uma ?rea ainda pouco estudada.Este trabalho teve como objetivo avaliar o desenvolvimento de plantas de arroz (Oryza sativa) em solos incubados comres?duos de perfura??o de po?o de petr?leo tratados com lavagem para eliminar a influ?ncia do s?dio e sob duas condi??es de umidade. Foram selecionados dois res?duos gerados durante a perfura??o do Po?o7-SMC-50D-AL. Posteriormente, foi feita a sua lavagem em ?gua, na propor??o 1:5, visando diminuir os efeitos do s?dio. Dessa forma, o tratamento de lavagem definiu duas condi??es: res?duo lavado e res?duo n?o lavado. A quantidade de res?duo adicionada ao solo foi definida de modo a atingir as concentra??es de b?rio de 300 mg kg-1, 600 mg kg-1 e 900 mg kg-1. Os solos foram mantidos em duas condi??es de umidade (70% da capacidade de campo e reduzido com presen?a de l?mina de ?gua). Durante a incuba??o dos vasos foi monitorado o potencial redox (Eh) at? que, na condi??o de redu??o, fossem atingidos valores pr?ximos de -200mV. Ap?s atingir esses valores, aguardou-se 30 dias para o transplantio das mudas de arroz e in?cio da realiza??o do ensaio. Foram coletadas amostras de cada unidade experimental, onde foram feitas an?lises dos elementos b?rio, ferro, mangan?s, c?lcio, s?dio e pot?ssio. Foi realizado o plantio do arroz, permanecendo durante todo ciclo vegetativo (aproximadamente 3 meses) at? serem colhidas as plantaspara an?lise. Os resultados obtidos demonstraram que os res?duos do secador e da centr?fuga, com e sem lavagem, na condi??o de oxida??o, n?o interferiram na produ??o de mat?ria seca das plantas de arroz. Entretanto, a condi??o de redu??o do solo promoveu o aumento dos teores de b?rio absorvidos pelas plantas e redu??o nos de ferro. Nos tratamentos com res?duo e na condi??o de redu??o, a solubiliza??o de b?rio combinada a uma defici?ncia moderada para ferro levou a uma poss?vel interfer?ncia na produ??o de mat?ria seca.

Specially designed non-damaging lost circulation pills (LCP) are being effectively applied for drilling depleted zones worldwide. Optimizing the LCP compositions stop the lost circulation effectively and protect the production zone from liquid and solids invasion significantly. Shape, particle size distribution and concentration of the lost circulation materials (LCM) are key parameters determining the effectiveness of LCP. In this study, the Permeability Plugging Apparatus (PPA) is utilized to evaluate effectiveness of various LCM&rsquo / s in curing the lost circulation. Sized calcium carbonates are used as LCM in different concentrations and in different particle size distribution. Lost circulation zones are simulated using the ceramic disks and slotted disks. Ceramic disks with nominal pore sizes 20, 35, 60, 90, and 150 microns are characterized in terms of pore size distribution using the computerized image analysis technique. Filter cake quality, spurt loss and filtrate volume are basic parameters to be evaluated in this study. Tests are performed at 75 F and 300 psi of differential.