Method of manufacture and using rod-shaped proppants and anti-flowback additives

1. A method of treating a subterranean formation comprising injecting a fluid into a fractured subterranean formation,

wherein the fluid comprises a blend of a sintered ceramic rod-shaped proppant and a substantially spherical proppant, and

wherein the sintered ceramic rod-shaped proppant has an average length to width ratio ranging from about 2:1 to about 4:1, an average diameter ranging from about 0.5 mm to about 1.5 mm, an average rod length ranging from about 2 mm to about 4 mm, and a narrow rod length distribution such that at least about 60% of the ceramic rod-shaped proppant has a length within 1 mm of the average rod length.

2. The method of claim 1 , wherein the sintered ceramic rod-shaped proppant has an alumina content equal to or greater than about 80% by weight.

3. The method of claim 2 , wherein the sintered ceramic rod-shaped proppant comprises bauxite.

4. The method of claim 2 , wherein the sintered ceramic rod-shaped proppant further has an aluminum titanate level ranging from about 0.2 to about 4%.

5. The method of claim 4 , wherein the sintered ceramic rod-shaped proppant further has an silica content of less than about 4% by weight.

6. The method of claim 5 , wherein the sintered ceramic rod-shaped proppant has a specific gravity ranging from 3.0 to 3.98.

7. The method of claim 1 , wherein the sintered ceramic rod-shaped proppant has an alumina content ranging from about 40% to about 80% by weight.

8. The method of claim 7 , wherein the sintered ceramic rod-shaped proppant comprises kaolin.

9. The method of claim 7 , wherein the sintered ceramic rod-shaped proppant comprises bauxitic kaolin.

10. The method of claim 1 , wherein the sintered ceramic rod-shaped proppant has a packed void volume of greater than 40%.

11. The method of claim 10 , wherein the spherical proppant has a packed void volume ranging from about 33% to about 38%.

12. The method of claim 1 , wherein the sintered ceramic rod-shaped proppant has an API crush resistance value ranging from about 5% by weight and about 9% crushed at 10,000 psi.

13. The method of claim 1 , wherein the sintered ceramic rod-shaped proppant has an API crush resistance value ranging from about 9% by weight and about 19% crushed at 15,000 psi.

14. The method of claim 1 , wherein the blend of sintered ceramic rod-shaped proppant and substantially spherical proppant comprises about 10% by weight of the sintered ceramic rod-shaped proppant.

15. The method of claim 14 , wherein the blend of sintered ceramic rod-shaped proppant and substantially spherical proppant comprises about 90% by weight of the substantially spherical proppant.