Method to underdisplace hydraulic fractures in horizontal or deviated well

Patent metadata

Field	Value
Publication number	US-9581005-B2
Application number	US-201414480819-A
Country	US
Kind code	B2
Filing date	Sep 9, 2014
Priority date	Sep 11, 2013
Publication date	Feb 28, 2017
Grant date	Feb 28, 2017

Abstract

A method for underdisplacing fracture proppant in a well bore. The method can include providing a set retainer having a passage configured to receive a wiper plug. The method may also include installing the set retainer in the well bore and injecting a proppant-laden fluid into the well bore, through the passage of the set retainer and through a perforation to create the fracture. The method may include providing a wiper plug configured to be received in the passage of the set retainer. The method may also include inserting the wiper plug into the well bore and allowing the wiper plug to wipe a portion of the proppant-laden fluid past the set retainer and into the fracture. Additionally, the method may include allowing the set retainer to receive the wiper plug.

First claim

What is claimed is:

1. A method for creating a fracture in a well bore, the method comprising:
a) providing a set retainer having a passage configured to receive a wiper plug;
b) installing the set retainer in the well bore;
c) injecting a proppant-laden fluid into the well bore, through the passage of the set retainer and through a perforation to create the fracture;
d) providing a wiper plug configured to be received in the passage of the set retainer;
e) inserting the wiper plug into the well bore;
f) allowing the wiper plug to wipe a portion of the proppant-laden fluid past the set retainer and into the fracture; and
g) allowing the set retainer to receive the wiper plug.

2. The method of claim 1 , wherein the proppant-laden fluid comprises a proppant selected from the group consisting of sand, mortar, walnut shells, glass beads, metal pellets, and ceramic beads, and combinations thereof.

3. The method of claim 1 , wherein the set retainer comprises a latch and the wiper plug comprises a retainer slip, and wherein the method further comprises the step of allowing the latch to engage the retainer slip.

4. The method of claim 1 , further comprising the step of forcibly removing at least one of the set retainer and the wiper plug from the well bore.

5. The method of claim 1 , wherein the installing step comprises running the set retainer on a wireline, the method further comprising the step of pulling the wireline to remove the set retainer from the well bore.

6. The method of claim 1 , wherein the set retainer comprises a packer, and wherein the step of installing comprises contacting the packer with the well bore.

7. The method of claim 1 , wherein the proppant-laden fluid comprises an injection fluid selected from the group consisting of slick water, linear or guar-based gel, hydroxyethyl cellulose (HEC), diesel, an oil-based fluid, propane, and foam.

8. The method of claim 1 ,
wherein installing the set retainer in the well bore comprises pumping the set retainer with a first injection fluid into the well bore;
wherein inserting the wiper plug into the well bore comprises pumping the wiper plug with a second injection fluid into the well bore; and
wherein the wiper plug comprises a rupture disc configured to rupture at a user-defined pressure;
the method further comprising:
h) providing a perforation assembly comprising a perforation gun coupled to a stopper;
i) inserting the perforation assembly into the well bore and pumping a third injection fluid into the well bore, wherein the pumped third injection fluid ruptures the rupture disc to thereby form a passage through the wiper plug; and,
j) allowing the passage to receive the stopper.

9. The method of claim 8 , further comprising the steps of:
k) detaching the stopper from the perforation gun;
l) aligning the perforation gun with a desired perforation site; and,
m) perforating the desired perforation site with the perforation gun.

10. The method of claim 9 , further comprising the steps of:
n) removing the perforation gun after perforating the desired perforation site; and
o) repeating steps a) through j) after steps k) through m) are completed.

11. The method of claim 9 , wherein the stopper is attached to the perforation gun by a shear pin, and wherein step k) comprises shearing the pin.

12. The method of claim 8 , wherein one of the perforation assembly and the set retainer is run on a wireline, the method further comprising the step of pulling the wireline to remove at least one of the perforation gun, the stopper, and the set retainer from the well bore.

13. The method of claim 8 , wherein at least one of the first injection fluid, second injection fluid, and third injection fluid flows through the passage of the wiper plug and into the fracture.

14. The method of claim 1 , further comprising:
h) prior to step b), providing a perforation gun coupled to the set retainer;
i) after step b), detaching the perforation gun from the set retainer; and
j) after step i), creating the perforation with the perforation gun.

15. The method of claim 14 , further comprising:
k) moving the perforation gun through the passage of the set retainer.

16. The method of claim 15 , wherein step k) occurs after step i) and prior to step j).

17. An apparatus comprising:
a body with a passage extending from a first end to a second end and configured to retain a stopper;
a plurality of wipers disposed on the body;
a rupture disc configured to block fluid flow through the passage, and to rupture at a user-defined pressure; and,
a slip retainer disposed on the body and configured to be retained by a set retainer having a latch.

18. The apparatus of claim 17 , further comprising a bypass port disposed on the body and configured to permit fluid communication between the passage and an annulus between the well bore and the apparatus.

19. The apparatus of claim 17 , further comprising a retaining nose disposed on the body.

Assignees

• Shell Oil Co

Inventors

• Noe Jeffrey Maloy
• Brisco David Paul
• Mowad Benjamin
• Smith Robert Dale
• Fonseca Ocampos Ernesto Rafael
• Carlile Joddie Joseph

Classifications

• E21B43/267 Primary

  reinforcing fractures by propping · CPC title