Patent ID: 9206659
Filing Date: 2015-12-08
Classification: C09K,E21B

Abstract:
1. A method of hydraulic fracturing, the method comprising the following steps: (a) providing a work string comprising a well treatment tool at an end of the string, the tool comprising an electromagnet; (b) inserting the tool into a wellbore in a subterranean formation to a first target zone; (c) injecting a magnetorheological fluid into the wellbore via the string; (d) inducing a magnetic field with the electromagnet in the magnetorheological fluid in the wellbore; (e) conducting a fracturing treatment by injecting a fracturing fluid into the wellbore at a pressure sufficient to fracture the formation; (f) after the fracturing treatment, turning off the electromagnetic field; (g) moving the work string along the wellbore to a second target zone; (h) repeating steps (d), (e) and (f) for fracturing the formation at the second target zone; and (j) repeating steps (d), (e), (f) and (g) successively for each additional target zone to be isolated and fractured.