专利名称：Method of Determination of Fracture Extent发明人：Rocco DiFoggio,Anthony A. DiGiovanni,Avi
Hetz
申请号：US13847962申请日：20130320
公开号：US20140284049A1公开日：20140925
专利附图：
摘要：A pressure pulse is initiated from the wellbore into the fractured formationwhere the frac fluid brings into the fractures a material that is responsive to the pressurepulse alone. Alternatively, or with a combination with a wellbore pressure pulse, well
conditions such as time exposure and temperature can initiate local pressure pulseswithin the fracture with the result being signal generation of an electromagnetic signalthat is measured with multiple sensors to allow triangulation of the location of thefracture extremities. The material can be a piezoelectric material that responds to thepressure pulse or ferromagnetic materials that similarly respond to the pulse to createthe measured signals. The material can be delivered initially with the frac fluid or atdifferent points in time during the fracture operation. Different materials with uniquesignal generating characteristics can be used to get a clearer picture of the extent of thefracture.
申请人：Baker Hughes Incorporated
地址：Houston TX US
国籍：US
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