A laboratory investigation of the factors controlling the filtration loss when drilling with colloidal gas aphron (CGA) fluids

被引：20
作者：
Bjorndalen, H. N. [1 ]
Jossy, W. E. [1 ]
Alvarez, J. M. [1 ]
Kuru, E. [2 ]
机构：
[1] Alberta Res Council, Edmonton, AB T6N 1E4, Canada
[2] Univ Alberta, Markin CNRL Nat Resources Engn Facil, Sch Min & Petr Engn, Edmonton, AB T6G 2W2, Canada
来源：
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING | 2014年 / 117卷
基金：
加拿大自然科学与工程研究理事会;
关键词：
colloidal gas aphrons; drilling fluid; filtration loss;
D O I：
10.1016/j.petrol.2014.03.003
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
The colloidal gas aphron (CGA) drilling fluids are designed to minimize formation damage by blocking pores of the rock with microbubbles and reducing the filtration loss. In order to gain a better understanding of the factors controlling the pore blocking mechanisms of microbubbles, a set of core flooding experiments was conducted by using various CGA drilling fluid formulations. The differential pressure drop along the sand-pack was measured. Effects of CGA fluid composition, flow rates, type of reservoir saturating fluids, permeability and wettability on the resistance to CGA drilling fluid flow through porous media (i.e., pressure drop due to CGA fluid flow) have been investigated. An increasing resistance to flow of CGA drilling fluids through porous media was observed as more CGA fluid was injected. Results confirmed that CGA microbubble build-up across the pore structure could establish an effective seal for controlling filtration loss. (C) 2014 Elsevier B.V. All rights reserved.
引用
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页码：1 / 7
页数：7
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