Loading patent…
AssigneeBaker Hughes Incorporated
InventorsPaulo Tubel, Brian Bidigare, Michael Johnson, John Harrell, Benn Voll
Estimating the term…
The present invention provides systems utilizing fiber optics for monitoring downhole parameters and the operation and conditions of downhole tools. In one system fiber optics sensors are placed in the wellbore to make distributed measurements for determining the fluid parameters including temperature, pressure, fluid flow, fluid constituents and chemical properties. Optical spectrometric sensors are employed for monitoring chemical properties in the wellbore and at the surface for chemical injection systems. Fiber optic sensors are utilized to determine formation properties including resistivity and acoustic properties compensated for temperature effects. Fiber optic sensors are used to monitor the operation and condition of downhole devices including electrical submersible pumps and flow control devices. In one embodiment, a common fluid line is used to monitor downhole parameters and to operate hydraulically-operated devices. Fiber optic sensors are also deployed to monitor the physical condition of power lines supplying high electric power to downhole equipment. A light cell disposed downhole is used to generate electric power in the wellbore, which is used to charge batteries.
A system for monitoring a downhole production fluid parameter, comprising:
A system for determining an acoustic property of a subsurface formation, comprising:
A system for determining resistivity of a subsurface formation, comprising:
A system for determining a formation parameter of a subsurface formation, comprising:
A downhole tool monitoring system, comprising:
A method of monitoring chemical injection into a surface treatment system of an oilfield well, comprising:
A measurement-while drilling (“MWD”) tool for use in drilling of a wellbore, comprising:
A method of monitoring and controlling an injection operation, comprising:
A downhole injection evaluation system comprising:
A system for optimizing hydrocarbon production comprising:
A method for avoiding injection induced unintentional fracture growth comprising:
A method for enhancing hydrocarbon production wherein at least one injection well and an associated production well include at least one sensor and at least one flow controller comprising providing a system capable of monitoring said at least one sensor in each of said wells and controlling said at least one flow controller in each of said wells in response thereto to optimize hydrocarbon production.
A method of making measurements in a wellbore, comprising:
A method of avoiding drilling into preexisting wellbore, comprising:
Dependencies are inferred from the claim text.