FRICTION REDUCERS, FRACTURING FLUID COMPOSITIONS AND USES THEREOF
Friction reducers, fracturing fluid compositions and methods for treating subterranean formations, wherein friction reducer is a blend of natural gum and polyacrylamide having a molecular weight between 300,000 and 30,000,000.
1 . A friction reducer comprising a blend of a natural gum and a partially hydrolyzed polyacrylamide (PHPA) having a molecular weight between 300,000 and 30,000,000, wherein the PHPA and/or natural gum has an average particle size of 150 μm or less.
2 . The friction reducer of claim 1 , wherein the ratio of the natural gum and the PHPA is from about 5:1 to about 1:0.01 by weight relative to the friction reducer.
3 . The friction reducer of claim 1 , wherein the natural gum is a galactomannan gum.
4 . The friction reducer of claim 3 , wherein the galactomannan gum is guar gum.
5 . The friction reducer of claim 3 , wherein the natural gum is selected from the group consisting of a guar gum, locust bean gum, a karaya gum, and a cassia tora gum.
6 . The friction reducer of claim 1 , wherein the friction reducer further comprises a cellulose polymer.
7 . The friction reducer of claim 1 , wherein the friction reducer further comprises a starch polymer.
8 . The friction reducer of claim 1 , wherein the friction reducer comprises a combination of guar gum, guar gum derivatives, locust bean gum, karaya gum, cassia tora, starch, cellulose or any natural gum.
9 . The friction reducer of claim 1 , wherein the friction reducer further comprises copolymers of acrylamides.
10 . The friction reducer of claim 1 , wherein the friction reducer further comprises acrylic acids.
11 . The friction reducer of claim 1 , wherein the friction reducer is crosslinkable.
12 . The friction reducer of claim 1 , wherein the friction reducer is biodegradable.
13 . A fracturing fluid comprising: an aqueous base fluid, a dry blend or a liquid slurry; and the friction reducer according to claim 1 .
14 . The fracturing fluid of claim 13 , wherein the concentration of the friction reducer is about 0.1% or less by weight of the fracturing fluid.
15 . The fracturing fluid of claim 13 , wherein the aqueous base fluid is fresh water 99.9 weight percent of the total weight of the aqueous base fluid.
16 . The fracturing fluid of claim 13 , wherein the aqueous base fluid is a brine comprising one or more dissolved inorganic salts in a total concentration between 0.1 and 20 weight percent of the total weight of the aqueous base fluid.
17 . The fracturing fluid of claim 16 , wherein inorganic salt comprises one or more monovalent or divalent cations.
18 . The fracturing fluid of claim 17 , where the divalent cations comprise calcium cations.
19 . The fracturing fluid of claim 17 , wherein the divalent cations comprise magnesium cations.
20 . The fracturing fluid of claim 17 , wherein the monovalent cations comprise sodium cations.
21 . The fracturing fluid of claim 17 , wherein the monovalent cations comprise potassium cations.
22 . The fracturing fluid of claim 13 , wherein at least a portion of the aqueous base fluid is flowback water.
23 . The fracturing fluid of claim 13 , wherein the aqueous base fluid comprises fresh fracturing fluid recycled fracturing fluid, flowback fracturing fluid or back-produced fracturing fluid, or combinations thereof.
24 . The fracturing fluid of claim 13 , wherein the friction reducer is used for carrying proppants from 20 mesh to 100 mesh.
25 . The fracturing fluid of claim 1 , wherein the friction reducer is slurriable in mineral oil and other non-sheen forming oils and solvents.