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1. (WO2018183241) METHODS FOR MAKING AND USING RETARDED ACID COMPOSITIONS FOR WELL STIMULATION

Pub. No.:    WO/2018/183241    International Application No.:    PCT/US2018/024439
Publication Date: Fri Oct 05 01:59:59 CEST 2018 International Filing Date: Wed Mar 28 01:59:59 CEST 2018
IPC: C09K 8/72
C09K 8/74
C09K 8/60
Applicants: SCHLUMBERGER TECHNOLOGY CORPORATION
SCHLUMBERGER CANADA LIMITED
SERVICES PETROLIERS SCHLUMBERGER
SCHLUMBERGER TECHNOLOGY B.V.
Inventors: QIU, Xiangdong
BRADY, Dominic Joseph
AL-JALAL, Ziad
PANGA, Mohan Kanaka Raju
DAEFFLER, Christopher Scot
Title: METHODS FOR MAKING AND USING RETARDED ACID COMPOSITIONS FOR WELL STIMULATION
Abstract:
Described herein are methods for treating a subterranean formation penetrated by a wellbore with a retarded acidizing fluid containing an acid and an acid retarding agent, the concentrations of which are adjusted based on measured parameter values of the formation. Also described is a method for treating a subterranean formation by introducing an acid to the formation following the introduction of an acid retarding agent to the formation. Also described is a method for acid fracturing a subterranean formation including reducing the concentration of an acid retarding agent contained in a retarded acidizing fluid over the course of the acid fracturing operation