07431088 is referenced by 11 patents and cites 336 patents.

An improved acidization method is provided in which an aqueous solution comprising one or more esters or polyesters of lactic acid or of glycerol is placed in a well where the esters or polyesters undergo hydrolysis. The hydrolysis of the esters or polyesters occurs at a slower reaction rate than that of several other known acidization esters, such as diethyleneglycol diformate, at temperatures higher than 60° C. or even higher than 100° C. Thus, the solution may be distributed substantially throughout a region in the well where acidization is required before hydrolysis is completed, despite being exposed to relatively high temperatures.

Title
Methods of controlled acidization in a wellbore
Application Number
11/336475
Publication Number
7431088 (B2)
Application Date
January 20, 2006
Publication Date
October 7, 2008
Inventor
Bradley L Todd
Duncan
OK, US
William W Shumway
Houton
TX, US
Alan W Moorehead
Houston
TX, US
Agent
Baker Botts
Craig W Roddy
Assignee
Halliburton Energy Services
OK, US
IPC
E21B 43/27
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