Low surface friction proppants
AssigneeHalliburton Energy Services, Inc.
InventorsChristopher Y. Fang, Dilip K. Chatterjee, Robert D. Skala, Christopher E. Coker, John R. Loscutova
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Abstract
A proppant having low surface friction is described, which is useful in hydrocarbon recovery. Methods of making low surface friction proppants are further described, as well as uses thereof.
Claims26
A proppant having low surface friction comprising an angle of repose of 30° or less;
- wherein said proppant comprises:
- a) a Krumbein sphericity of at least 0.5;
- b) a roundness of at least 0.5;
- c) a particle size distribution such that the proppant has a dps from about 0.001 to about 0.3, wherein dps=(dp90−dp10)/dp50 and wherein dp10 is a particle size wherein 10% of the particles have a smaller particle size, dp50 is a median particle size wherein 50% of the particles have a smaller particle size, and dp90 is a particle size wherein 90% of the particles have a smaller particle size;
- d) a porosity, excluding a central void, of from about 6% to about 40%;
- and
- e) proppant pores, wherein at least 90% of the proppant pores have a pore size of from about 0.1 micron to about 10 microns and at least 80% of the proppant pores are not in contact with each other.
A method comprising:
- manufacturing a proppant;
- and
- measuring the angle of repose of the proppant, wherein said proppant comprises:
- a) a Krumbein sphericity of at least 0.5:
- b) a roundness of at least 0.5;
- c) a particle size distribution such that the proppant has a d from about 0.001 to about 0.3, wherein dps=(dp90−dp10)/dp50 and wherein dp10 is a particle size wherein 10% of the particles have a smaller particle size, dp50 is a median particle size wherein 50% of the particles have a smaller particle size, and dp90 is a particle size wherein 90% of the particles have a smaller particle size;
- d) a porosity, excluding a central void, of from about 6% to about 40%;
- and
- e) proppant pores, wherein at least 90% of the proppant pores have a pore size of from about 0.1 micron to about 10 microns and at least 80% of the proppant pores are not in contact with each other.
A method comprising:
- manufacturing a proppant having an angle of repose of 30° or less;
- and
- placing the proppant in a transport fluid or carrying fluid, wherein said proppant comprises:
- a) a Krumbein sphericity of at least 0.5;
- b) a roundness of at least 0.5;
- c) a particle size distribution such that the proppant has a dps from about 0.001 to about 0.3, wherein dps=(dp90−dp10)/dp50 and wherein dp10 is a particle size wherein 10% of the particles have a smaller particle size, dp50 is a median particle size wherein 50% of the particles have a smaller particle size, and dp90 is a particle size wherein 90% of the particles have a smaller particle size;
- d) a porosity, excluding a central void, of from about 6% to about 40%;
- and
- c) proppant pores, wherein at least 90% of the proppant pores have a pore size of from about 0.1 micron to about 10 microns and at least 80% of the proppant pores are not in contact with each other.
A method comprising:
- manufacturing a first proppant having an angle of repose of 30° or less, wherein the first proppant comprises a ceramic material;
- measuring the agglomeration of the first proppant in a treatment fluid;
- wherein the first proppant has less agglomeration relative to a second proppant having an angle of repose greater than 30° and comprising the same ceramic material as the first proppant, wherein said first proppant comprises:
- a) a Krumbein sphericity of at least 0.5;
- b) a roundness of at least 0.5;
- c) a particle size distribution such that the proppant has a d from about 0.001 to about 0.3, wherein dps=(dp90−dp10)/dp50 and wherein dp10 is a particle size wherein 10% of the particles have a smaller particle size, dp50 is a median particle size wherein 50% of the particles have a smaller particle size, and dp90 is a particle size wherein 90% of the particles have a smaller particle size;
- d) a porosity, excluding a central void, of from about 6% to about 40%;
- and
- e) proppant pores, wherein at least 90% of the proppant pores have a pore size of from about 0.1 micron to about 10 microns and at least 80% of the proppant pores are not in contact with each other.
A method of achieving lower resistance to multi-phase flow in a subterranean formation comprising:
- introducing a proppant having an angle of repose of 30° or less into the subterranean formation such that the resistance to multi-phase flow in the subterranean formation is lowered;
- wherein said proppant comprises:
- a) a Krumbein sphericity of at least 0.5;
- b) a roundness of at least 0.5;
- c) a particle size distribution such that the proppant has a dps from about 0.001 to about 0.3, wherein dps=(dp90−dp10)/dp50 and wherein dp10 is a particle size wherein 10% of the particles have a smaller particle size, dp50 is a median particle size wherein 50% of the particles have a smaller particle size, and dp90 is a particle size wherein 90% of the particles have a smaller particle size;
- d) a porosity, excluding a central void, of from about 6% to about 40%;
- and
- e) proppant pores, wherein at least 90% of the proppant pores have a pore size of from about 0.1 micron to about 10 microns and at least 80% of the proppant pores ores are not in contact with each other.
A method to achieve lower pressure drop in a subterranean formation comprising:
- introducing a proppant having an angle of repose of 30° or less into the subterranean formation such that the pressure drop in the subterranean formation is lowered;
- wherein said proppant comprises:
- a) a Krumbein sphericity of at least 0.5;
- b) a roundness of at least 0.5:
- c) a particle size distribution such that the proppant has a dps from about 0.001 to about 0.3, wherein dps=(dp90−dp10)/dp50 and wherein dp10 is a particle size wherein 10% of the particles have a smaller particle size, dp50 is a median particle size wherein 50% of the particles have a smaller particle size, and dp90 is a particle size wherein 90% of the particles have a smaller particle size;
- d) a porosity, excluding a central void, of from about 6% to about 40%;
- and
- e) proppant pores, wherein at least 90% of the proppant pores have a pore size of from about 0.1 micron to about 10 microns and at least 80% of the proppant pores are not in contact with each other.
A method to reduce bridging and/or clogging of the proppant in a subterranean formation comprising:
- introducing a proppant having an angle of repose of 30° or less into the subterranean formation such that the bridging and/or clogging, of the proppant in the subterranean formation is reduced;
- wherein said proppant further comprises:
- a) a Krumbein sphericity of at least 0.5;
- b) a roundness of at least 0.5:
- c) a particle size distribution such that the proppant has a dps from about 0.001 to about 0.3, wherein dps=(dp90−dp10)/dp50 and wherein dp10 is a particle size wherein 10% of the particles have a smaller particle size, dp50 is a median particle size wherein 50% of the particles have a smaller particle size, and dp90 is a particle size wherein 90% of the particles have a smaller particle size;
- d) a porosity, excluding a central void, of from about 6% to about 40%;
- and
- e) proppant pores, wherein at least 90% of the proppant pores have a pore size of from about 0.1 micron to about 10 microns and at least 80% of the proppant pores are not in contact with each other.
Dependencies are inferred from the claim text.