IMECH-IR  > 流固耦合系统力学重点实验室
Removal of formation damage induced by drilling and completion fluids with combination of ultrasonic and chemical technology
Shi X; Xu HX; Yang L(杨柳)
Source PublicationJOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING
2017
Volume37Pages:471-478
ISSN1875-5100
Abstract

Drilling fluids and completion fluids usually contains solids, high amounts of molecular and long chain polymers, which may result in severe permeability damage. The application of ultrasonic waves has been widely used for formation remedy but the effectiveness on polymer-induced damage is limited by downhole acoustic intensity. Thus, the combination of ultrasonic and chemical (acid and chlorine dioxide) technology has been experimentally investigated in this paper. The effect of core initial permeability and the ultrasonic irradiation characteristics, including frequency and time interval, on the cleaning results were then investigated by an ultrasonic technique such that the optimal ultrasonic parameters could be selected. Experimental results demonstrate that the ultrasonic energy and frequency have positive relationships with cleaning effectiveness, and treatment time duration was measured to extend beyond 60 min to ensure a sufficient physicochemical reaction. A comparison with the plugging removal effect with independent chlorine dioxide (ClO2), acidizing, ultrasonic remedial treatments, and a combination of ultrasonic and chemical techniques indicates that the combination technique can produce better cleaning results because of the good coordination among the acid, oxidant and ultrasonic wave. The integration of acid, oxidant and ultrasonic technology is beneficial for long-chain polymer degradation and the removal of iron ion precipitation and solids, whereas ultrasonic energy can extend the chemical activation time3, increase the reaction rate and enhance the byproduct removal. (C) 2016 Elsevier B.V. All rights reserved.

DOI10.1016/j.jngse.2016.11.062
URL查看原文
Indexed BySCI ; EI
Language英语
WOS IDWOS:000392679900033
WOS KeywordFormation damage ; Drilling and completion fluids ; Ultrasonic technology ; Chemical remedy ; Near-wellbore
WOS Research AreaEnergy & Fuels ; Engineering
WOS SubjectEnergy & Fuels ; Engineering, Chemical
Classification二类
Ranking3
Citation statistics
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/60108
Collection流固耦合系统力学重点实验室
Recommended Citation
GB/T 7714
Shi X,Xu HX,Yang L. Removal of formation damage induced by drilling and completion fluids with combination of ultrasonic and chemical technology[J]. JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING,2017,37:471-478.
APA Shi X,Xu HX,&杨柳.(2017).Removal of formation damage induced by drilling and completion fluids with combination of ultrasonic and chemical technology.JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING,37,471-478.
MLA Shi X,et al."Removal of formation damage induced by drilling and completion fluids with combination of ultrasonic and chemical technology".JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING 37(2017):471-478.
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