Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
17 words
injecting into the formation about 1-500 gallons of a mobility buffer per vertical foot of the formation,
Claim 2
Dependent Claim
17 words
The process of claim 1 wherein the micellar dispersion is comprised of hydrocarbon, surfactant, and aqueous medium.
Claim 3
Dependent Claim
7 words
injecting a mobility buffer slug, and then,
Claim 4
Dependent Claim
27 words
injecting sufficient displacing fluid to substantially displace the mobility buffer to a distance of at least about 7.5 feet in radius from the well bore, and then,
Claim 5
Dependent Claim
14 words
The process of claim 2 wherein the micellar dispersion optionally contains cosurfactant and/or electrolyte.
Claim 6
Dependent Claim
25 words
injecting sufficient water into the formation to substantially displace the micellar dispersion to a radius of at least about 7.5 feet from the well bOre,
Claim 7
Dependent Claim
15 words
injecting about 1 to about 500 gallons of an aqueous solution containing sodium hypochlorite, and,
Claim 8
Dependent Claim
22 words
The process of claim 1 wherein the mobility buffer is an aqueous solution comprised of a partially hydrolyzed, high molecular weight polyacrylamide.
Claim 9
Dependent Claim
50 words
injecting sufficient amounts of a fluid different from the displacing fluid of step 3 and which will act on the formation to substantially increase the relative permeability to the flow of fluids through the reservoir wherein a decreased permeability was caused by a mobility reducing agent within the mobility buffer.
Claim 10
Dependent Claim
28 words
The process of claim 1 wherein from about 1 to about 500 gallons of a mobility buffer per vertical foot of hydrocarbon-bearing formation is injected into the formation.
Claim 11
Dependent Claim
10 words
thereafter continuing the injection of water into the injection well.
Claim 12
Dependent Claim
26 words
The process of claim 1 wherein from about 0.1 to about 50 volumes of water per volume of the mobility buffer is injected into the reservoir.
Claim 13
Dependent Claim
29 words
The process of claim 1 wherein said fluid of step 4 comprises about 5 to about 250 gallons of a sodium hypochlorite solution per vertical foot of hydrocarbon-bearing reservoir.
Claim 14
Dependent Claim
21 words
A process of increasing the injectivity index of an injection well in fluid communication with a hydrocarbon-bearing formation, the process comprising:
Claim 15
Dependent Claim
25 words
The process of claim 8 wherein from about 5 to about 250 gallons of the mobility buffer per vertical foot of the formation is injected.
Claim 16
Dependent Claim
23 words
The process of claim 8 wherein the mobility buffer contains a mobility reducing agent which is a partially hydrolyzed, high molecular weight polyacrylamide.
Claim 17
Dependent Claim
31 words
The process of claim 8 wherein sufficient water is injected to substantially displace the mobility buffer to a distance of at least about 7.5 feet in radius from the well bore.
Claim 18
Dependent Claim
25 words
The process of claim 8 wherein from about 0.5 to about 30 volumes of water per volume of mobility buffer is injected into the reservoir.
Claim 19
Dependent Claim
29 words
The process of claim 8 wherein from about 10 to about 200 gallons of the sodium hypochlorite solution per vertical foot of hydrocarbon-bearing formation is injected into the formation.
Claim 20
Dependent Claim
21 words
The process of claim 8 wherein the sodium hypochlorite solution contains from about 0.1 to about 30 percent of sodium hypochlorite.