Well treatment

Patent metadata

Field	Value
Publication number	US-2016145483-A1
Application number	US-201414554866-A
Country	US
Kind code	A1
Filing date	Nov 26, 2014
Priority date	Nov 26, 2014
Publication date	May 26, 2016
Grant date	—

Abstract

Methods of treating a subterranean formation penetrated by a well bore, by providing a treatment fluid providing a treatment fluid comprising non-bridging fibers and particles comprising a degradable material,; by introducing the treatment fluid into the well bore; and by creating a plug with the treatment fluid.

First claim

What is claimed is:

1 . A diverting composition comprising a treatment fluid comprising non-bridging fibers and particles comprising a degradable material.

2 . The composition of claim 1 , wherein the fibers are crimped staple fibers.

3 . The composition of claim 1 , wherein the fibers contain 0.1 to 20 wt % silicones.

4 . The composition of claim 3 , wherein the fibers are crimped staple fibers.

5 . The composition of claim 1 , wherein the treatment fluid contains a blend including a first amount of particles having a first average particle size between about 3 mm and 2 cm and a second amount of particles having a second average size between about 1.6 and 20 times smaller than the first average particle size or a second amount of flakes having a second average size up to 10 times smaller than the first average particle size.

6 . The composition of claim 1 , wherein the fibers are dispersed in the treatment fluid in an amount effective to inhibit settling of the particles in said treatment fluid.

7 . The composition of claim 1 , wherein the treatment fluid comprises is a low viscosity fluid.

8 . The composition of claim 3 , wherein the silicone is a linear polysiloxane.

9 . The composition of claim 3 , wherein the silicone has an average molecular weight of from about 100 000 g/mol to about 900 000 g/mol.

10 . The composition of claim 1 wherein the degradable material is a polylactic acid material or a polyglycolic acid.

11 . The method according to claim 4 wherein the treatment fluid further comprises a third amount of particulates or flakes having a third average size smaller than the second average size.

12 . The method of claim 11 wherein the treatment fluid further comprises a fourth and a fifth amount of particulates or flakes having a fourth average size smaller than the third average size, and a fifth average size smaller than the fourth average size.

13 . The method according to claim 1 wherein the treatment fluid is such that a packed volume fraction of the blend exceeds 0.7.

14 . A method of treating a subterranean formation penetrated by a well bore, comprising:
providing a treatment fluid comprising non-bridging fibers and particles comprising a degradable material, introducing the treatment fluid into the well bore; and, creating a plug with said treatment fluid.

15 . The method according to claim 14 further comprising removing the plug.

16 . The method of claim 14 wherein the method further comprises subjecting the subterranean formation to a fracturing treatment.

17 . The method of claim 14 wherein the method further comprises subjecting the subterranean formation to a fracturing treatment after the creating of the plug.

18 . A method of treating a subterranean formation of a well bore, wherein the well bore comprises a casing and at least one hole on said casing, said hole having a diameter, the method comprising:
providing a treatment fluid comprising non-bridging fibers and particles comprising a degradable material, introducing the treatment fluid into the hole; creating a plug of the hole with said treatment fluid; and removing the plug,
wherein the treatment fluid contains a blend including a first amount of particles having a first average particle size between about 3 mm and 2 cm and a second amount of particles having a second average size between about 1.6 and 20 times smaller than the first average particle size or a second amount of flakes having a second average size up to 10 times smaller than the first average particle size.

19 . The method of claim 18 , wherein the fibers are crimped staple fibers.

20 . The method of claim 19 , wherein the fibers contain 0.1 to 20 wt % silicones.

Assignees

• Schlumberger Technology Corp

Inventors

• Lecerf Bruno
• Usova Zinaida Yurievna
• Usoltsev Dmitriy

Classifications

• E21B43/26

  by forming crevices or fractures · CPC title

• C09K2208/08

  Fiber-containing well treatment fluids · CPC title

• E21B33/12

  Packers; Plugs (used for cementing E21B33/134, E21B33/16) · CPC title

• C09K8/426 Primary

  for plugging · CPC title

• E21B43/267

  reinforcing fractures by propping · CPC title