配方类型:

ELASTOMERS, POLYMERS, AND RESINS

配方说明:

Aluminum citrate/Polymer (EOR-Polymer Cross-Linking for the
Petroleum Industry)

配方组成:

配制方法:

Inject 25% of the pore volume with anionic partially hydrolyzed polyacrylamide at a concentration of 1500 ppm. Follow with an equal volume of 300 ppm Al^+^+^+equivalent to 10,000 ppm 3% aluminum citrate solution. A reservoir could require 1-5 million barrels of injection fluids.
Aluminum citrate can be formulated as a dry blend of aluminum sulfate and sodium citrate or as a convenient solution containing 3% aluminum.
Notes: A quick and convenient performance test for checking the crosslinking of polymers with liquid aluminum citrate has been designed by Miles Laboratories. Copies of this test are available from Citro-tech Products Technical Services Department.
Aluminum citrate is used to gel polymers in situ for applications in mobility control and channel blocking in Enhanced Oil Recovery (EOR) operations. The cross-linking (gelling) of the polymer is done by the aluminum ion and is injected in the form of aluminum citrate which has a very slow reaction rate, giving the aluminum a chance to p