Frac Fluids for Far Field Diversion
AssigneeBJ Services Company
InventorsLeonid Vigderman, Lingjuan Shen, Diankui Fu
Life of this patent
Estimating the term…
Abstract
Aqueous well treatment fluids are provided especially for use in far field diversion in low viscosity carrier fluids. The fluids comprise water, a friction reducer, and a diverter. The diverter comprises dissolvable particulates and proppants. The dissolvable particulates have a specific gravity of from about 0.9 to about 1.6 and a particle size of about 50 mesh or less. The proppants have a specific gravity of from about 0.9 to about 1.4 and a particle size of from about 20 to about 100 mesh. The dissolvable particulates have a higher specific gravity and a smaller particle size than the proppant.
Claims20
An aqueous well treatment fluid, said well treatment fluid comprising:
- (a) water;
- (b) a friction reducer;
- (c) a diverter, said diverter comprising:
- i) dissolvable particulates having:
- (1) a specific gravity of from about 0.9 to about 1.6;
- and
- (2) a particle size of about 50 mesh or less;
- and
- ii) proppants having:
- (1) a specific gravity of from about 0.9 to about 1.4;
- and
- (2) a particle size of from about 20 to about 100 mesh;
- and
- iii) wherein said dissolvable particulates have a higher specific gravity and a smaller particle size than said proppant.
A method of fracturing a subterranean formation in a well, said method comprising:
- (a) providing an aqueous carrier fluid;
- (b) adding a diverter to said carrier fluid, said diverter comprising:
- i) dissolvable particulates having:
- (1) a specific gravity of from about 0.9 to about 1.6;
- and
- (2) a particle size of about 50 mesh or less;
- and
- ii) proppants having:
- (1) a specific gravity of from about 0.9 to about 1.4;
- and
- (2) a particle size of from about 20 mesh to about 100 mesh;
- and
- iii) wherein said dissolvable particulates have a higher specific gravity and a smaller particle size than said proppant;
- and
- (c) pumping said carrier fluid with said diverter into said formation.
Dependencies are inferred from the claim text.