PHYSICAL SIMULATION AND FRACTAL FEATURES OF ACID FINGERING IN PAD ACID FRACTURING TREATMENT

doi:10.3863/j.issn.1000-2634.2007.06.025

西南石油大学学报(自然科学版) ›› 2007, Vol. 29 ›› Issue (6): 105-108.DOI: 10.3863/j.issn.1000-2634.2007.06.025

• 石油与天然气工程 • Previous Articles Next Articles

PHYSICAL SIMULATION AND FRACTAL FEATURES OF ACID FINGERING IN PAD ACID FRACTURING TREATMENT

LI Xiao-gangYANG Zhao-zhongCHEN RuiJIANG Hai

1.Southwest Petroleum University，Chengdu Sichuan 610500，China；2.Sichuan Prteoleum Administration Bureau，Chengdu Sichuan 610051，China

Received:2006-12-25 Revised:1900-01-01 Online:2007-12-20 Published:2007-12-20
Contact: LI Xiao-gang

Abstract

Abstract:

The phenomenon of acid fingering in pad acid fracturing treatment directly affects acid distribution, effective distance, fracture conductivity. It is more complicated and difficult to study than other fingering phenomena. Previously, acid fingering was simulated in a model that consists of two lucite plates, which failed to simulate acid fingering with acidrock reaction. Based on previous study, one marmoreal plate and one doubledeck toughened glass plate, rather than two transparent glass plates, are used as the fracture walls. Acid fingering is successfully simulated with acidrock heterogeneous chemical reaction. Some new phenomena, which are not mentioned in existing literature, are discovered. The acid fingering patterns are characterized by fractal dimension, which is 1.86, 1.75, 1.75 and 1.81 respectively. Which illustrates that the fingering pattern is evidently fractal and directly supports the applications of fractal theory in acid fracturing design.

Key words: acid fracturing, acid, fingering, physical simulation, fractal

CLC Number:

TE357.2

LI Xiao-gang YANG Zhao-zhong CHEN Rui JIANG Hai. PHYSICAL SIMULATION AND FRACTAL FEATURES OF ACID FINGERING IN PAD ACID FRACTURING TREATMENT[J]. 西南石油大学学报(自然科学版), 2007, 29(6): 105-108.

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PHYSICAL SIMULATION AND FRACTAL FEATURES OF ACID FINGERING IN PAD ACID FRACTURING TREATMENT

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