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APLICAÇÃO DE DISPERSANTES TENSOATIVADOS NO CONTROLE DE REBOCO, FILTRADO E NO DESENVOLVIMENTO DE POÇOS TUBULARES

2007; Associação Brasileira de Águas Subterrâneas; Volume: 21; Issue: 1 Linguagem: Inglês

10.14295/ras.v21i1.16177

2179-9784

Kássie Vieira Farias, Luciana Viana Amorim, Eugênio Pereira, Heber Carolos Ferreira,

Drilling and Well Engineering

The aim of this work is to evaluate the use of dispersant with and without tensoactive over filter-cake,water loss and rheology of the water based drilling fluids. Three samples dispersant additives, called Hexa (withouttensoactive), Hexa T (with tensoactive) and Spersene were studied. The drilling fluids were prepared with 4.86 % w/w ofsodium bentonite clay from Boa Vista, PB and determinate the apparent and plastic viscosities and the water loss before andafter treatment with additives according to Petrobras N-2605 standard. The filter-cake thickness was determinate usingmethodology based on API 13B-1 standard. Also, it was done the characterization of the dispersant additives and thesimulation of the action of the dispersant additives as “washing fluids” in the development of tubular wells. The resultsshows the importance to using dispersant and tensoactive agents simultaneously in formulating additives for drilling fluidsto prevent or solve thick filter-cake problems. Besides, it may help in the cleaning process to improve the efficiency and theproductivity of the well.