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Oil base fluids without tensoactive additives; Fluidos a base de oleo sem tensoativos

Abstract

The goal of this paper is to define an ideal oil base fluid composition without tensoactive additives, since these may cause damage to producing formation during drilling or well completion. We investigated the rheological, filtrating and phase separation properties of the systems composed of diesel oil, organophilic clay and a polar agent (water or ethyl alcohol). In order to to that, we used the 286 Baroid digital rotating viscometer, filtrating cells standardized according to the American Petroleum Institute (AP) for temperatures of 25 deg C to 149 deg C and pressures of 6,89 x 10{sup 5} Pa (100 psig) to 3,44 x 10{sup 6} (500 psig), and the setting method, according to the determinations of respectively rheological, filtrating and phase separation parameters. Results proved that the composition: diesel oil-94% v/v, Na Cl saturated solution - 6% v/v and bentone - 17,1 to 22,8 kg/m{sup 3} (6 to 8 lb/bbl), is ideal to meet the properties required for drilling and well completion operations for low densities, that is 0,84% to 1,02 (6,9 to 8,5 ib/gal). In order to obtain densities in the interval of 1,02 to 1,14 (8,5 to 9,5 ib/gal) the system should be condensed with calcite (Ca CO{sub 3})  More>>
Authors:
Machado, Jose Carlos V; Aragao, Atila Fernando L [1] 
  1. PETROBRAS, XX (Brazil). Centro de Desenvolvimento de Recursos Humanos Norte e Nordeste
Publication Date:
Dec 31, 1989
Product Type:
Conference
Report Number:
ETDE-BR-0094; CONF-890029-
Reference Number:
SCA: 040300; PA: BR-99:000617; SN: 99002141733
Resource Relation:
Conference: 3. seminar on drilling fluids, 3. Seminario de fluidos de perfuracao, Rio de Janeiro (Brazil), 1989; Other Information: PBD: 1989
Subject:
04 OIL SHALES AND TAR SANDS; ENERGY; PETROLEUM; PETROLEUM INDUSTRY; DRILLING; DRILLING FLUIDS; OIL FIELDS; OIL WELLS; ADDITIVES; RHEOLOGY; FLUID FLOW
OSTI ID:
700860
Research Organizations:
PETROBRAS, Rio de Janeiro (Brazil). Centro de Pesquisas e Desenvolvimento Leopoldo A. Miguez de Mello
Country of Origin:
Brazil
Language:
Portuguese
Other Identifying Numbers:
Other: ON: DE99763682; TRN: BR9900617
Availability:
OSTI as DE99763682
Submitting Site:
BR
Size:
8 p.
Announcement Date:

Citation Formats

Machado, Jose Carlos V, and Aragao, Atila Fernando L. Oil base fluids without tensoactive additives; Fluidos a base de oleo sem tensoativos. Brazil: N. p., 1989. Web.
Machado, Jose Carlos V, & Aragao, Atila Fernando L. Oil base fluids without tensoactive additives; Fluidos a base de oleo sem tensoativos. Brazil.
Machado, Jose Carlos V, and Aragao, Atila Fernando L. 1989. "Oil base fluids without tensoactive additives; Fluidos a base de oleo sem tensoativos." Brazil.
@misc{etde_700860,
title = {Oil base fluids without tensoactive additives; Fluidos a base de oleo sem tensoativos}
author = {Machado, Jose Carlos V, and Aragao, Atila Fernando L}
abstractNote = {The goal of this paper is to define an ideal oil base fluid composition without tensoactive additives, since these may cause damage to producing formation during drilling or well completion. We investigated the rheological, filtrating and phase separation properties of the systems composed of diesel oil, organophilic clay and a polar agent (water or ethyl alcohol). In order to to that, we used the 286 Baroid digital rotating viscometer, filtrating cells standardized according to the American Petroleum Institute (AP) for temperatures of 25 deg C to 149 deg C and pressures of 6,89 x 10{sup 5} Pa (100 psig) to 3,44 x 10{sup 6} (500 psig), and the setting method, according to the determinations of respectively rheological, filtrating and phase separation parameters. Results proved that the composition: diesel oil-94% v/v, Na Cl saturated solution - 6% v/v and bentone - 17,1 to 22,8 kg/m{sup 3} (6 to 8 lb/bbl), is ideal to meet the properties required for drilling and well completion operations for low densities, that is 0,84% to 1,02 (6,9 to 8,5 ib/gal). In order to obtain densities in the interval of 1,02 to 1,14 (8,5 to 9,5 ib/gal) the system should be condensed with calcite (Ca CO{sub 3}) and the base fluid composition should be : diesel oil-94 to 98% v/v, Na Cl saturated solution - 2 to 6% v/v and bentone 17,1 to 22,8 kg/m{sup 3} (6 to 8 ib/bbl). The average cost per barrel for the systems studied here is of the same order of conventional oil base fluids (with tensoactive additives). (author) 13 refs., 7 figs., 3 tabs.}
place = {Brazil}
year = {1989}
month = {Dec}
}