METHODS TO DELIVER FLUIDS ON A WELL SITE WITH VARIABLE SOLIDS CONCENTRATION FROM SOLID SLURRIES
The invention discloses a storable composition for oilfield application including a slurry of a carrier fluid and a particulate blend made of proppant; the particulate blend comprising at least a first amount of particulates having a first average particle size between about 100 and 5000 μm and at least a second amount of particulates having a second average particle size between about three and twenty times smaller than the first average particle size; such that a packed volume fraction of the particulate blend exceeds 0.74 and the particulate blend volume is sufficient to substantially avoid settling of the particulate in the carrier fluid.
1 . A storable composition for oilfield application, comprising a slurry of a carrier fluid and a particulate blend made of proppant; the particulate blend comprising at least a first amount of particulates having a first average particle size between about 100 and 5000 μm and at least a second amount of particulates having a second average particle size between about three and twenty times smaller than the first average particle size; such that a packed volume fraction of the particulate blend exceeds 0.74.
2 . The composition of claim 1 , wherein the carrier fluid comprises a viscosifying agent and water.
3 . The composition of claim 1 , wherein the carrier fluid comprises a friction reducer agent and water.
4 . The composition of claim 1 , wherein the carrier fluid comprises an acid and water.
5 . The composition of claim 1 , wherein the particulate blend comprises a degradable material.
6 . The composition of claim 1 , wherein the particulate blend comprises a viscosifier material.
7 . The composition of claim 6 , wherein the viscosifier material is an acid soluble polymer which increases viscosity of the composition when in acid pH.
8 . The composition of claim 7 , wherein the acid soluble polymer is chitosan, chitosan derivative, polyimide, copolymer of vinyl pyridine, copolymer of acrylic and/or methacrylic acid or a mixture thereof.
9 . The composition of claim 7 , wherein the particulate blend comprises an acid precursor.
10 . The composition of claim 9 , wherein the acid precursor is encapsulated.
11 . The composition of claim 1 , wherein the particulate blend further includes a third amount of particulates having a third average particulate size that is smaller than the second average particulate size.
12 . The composition of claim 1 , wherein the packed volume fraction of the particulate blend exceeds 0.8.
13 . A method of servicing a well on a well site, comprising:
preparing an oilfield composition comprising a slurry of a carrier fluid and a particulate blend made of proppant; the particulate blend comprising at least a first amount of particulates having a first average particle size between about 100 and 5000 μm and at least a second amount of particulates having a second average particle size between about three and twenty times smaller than the first average particle size; such that a packed volume fraction of the particulate blend exceeds 0.74; and
delivering the oilfield composition to the well.
14 . (canceled)
15 . The method of claim 13 , wherein the particulate blend volume is sufficient to substantially avoid settling of the particulate in the carrier fluid.
16 . (canceled)
17 . (canceled)
18 . The method of claim 13 , wherein the concentration by volume of proppant in the composition is between 74% and 95%.
19 . The method of claim 18 , wherein the concentration by volume of proppant in the composition is between 75% and 80%.
20 . The method of claim 13 , wherein said serving the well is selected from the list consisting of: hydraulic fracturing, drilling, gravel packing, sand control and other completion or workover types of treatments.
21 . The method of claim 13 , wherein the particulate blend comprises a viscosifier material able to reduce settling of the particulate in the carrier fluid.
22 . The method of claim 21 , wherein the viscosifier material is an acid soluble polymer which increases viscosity of the composition when in acid pH.
23 . The method of claim 22 , wherein the acid soluble polymer is chitosan, chitosan derivative, polyimide, copolymer of vinyl pyridine, copolymer of acrylic and/or methacrylic acid or a mixture thereof.
24 . The method of claim 22 , wherein the particulate blend comprises an acid precursor.
25 . The method of claim 24 , wherein the acid precursor is encapsulated.
26 . (canceled)
27 . (canceled)
28 . (canceled)
29 . The method of claim 13 , wherein the particulate blend volume is sufficient to substantially avoid settling of the particulate in the carrier fluid.
30 . The method of claim 13 , wherein the particulate blend further includes a third amount of particulates having a third average particulate size that is smaller than the second average particulate size.
31 . The method of claim 20 , wherein said serving the well is hydraulic fracturing.
32 . The method of claim 20 , wherein said serving the well is gravel packing.
33 . The method of claim 20 , wherein said serving the well is drilling.
34 . The method of claim 20 , wherein said serving the well is performing a frac and pack treatment.