Gel diverting agent used in acidizing treatments
Diverting methods have been developed and used extensively to distribute treating fluids in a zone or to divert them from one zone to another. Diverting may be accomplished mechanically or chemically. Mechanical diverting with perforation-sealing balls is a common procedure, but conditions may exist which make it ineffective. Packers also have provided effective mechancial diverting. However, they are more difficult to use because their effectiveness is dependent on accurately locating the zone to be treated and accurately setting the packer to isolate this zone. Numerous soluble particulated solids, which are often referred to as temporary bridging agents, have been developed for fluid diversion. The need for an impermeable gel-diverting system was recognized. In order to be used as a diverter in acidizing treatments, the gel has to meet the following criteria: low viscosity during placement, hydrate to form a solid impermeable gel in the formation, revert with time to a liquid for removal, and leave a minimum of permeability damage. The procedure used on a field job is presented, and the results are described.
- Research Organization:
- Halliburton Services
- OSTI ID:
- 6621407
- Report Number(s):
- CONF-760410-
- Journal Information:
- Proc. Annu. Southwest. Pet. Short Course; (United States), Conference: Southwestern petroleum short course, Lubbock, TX, USA, 22 Apr 1976
- Country of Publication:
- United States
- Language:
- English
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