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US 9,540,925 B2Granted
Methods and systems of increasing signal strength of oilfield tools
AssigneeM-I Drilling Fluids UK Limited
InventorsJarrod Massam, Ramy Mahrous, Sandra Reyes
Life of this patent
Estimating the term…
Abstract
A method for measuring at least one property of an earth formation and transmitting information through the earth formation may include positioning at least one sensor downhole, circulating a wellbore fluid downhole, and transmitting a first signal from the sensor to at least one modulator.
Claims24
A method of measuring a property of an earth formation and transmitting information through the earth formation comprising:
- positioning at least one sensor downhole;
- circulating a wellbore fluid downhole, wherein the wellbore fluid has a viscometer reading of less than 5, measured at 6 and 3 rpm and comprises a base fluid and a weighting agent having a d50 less than 25 microns;
- and
- transmitting a first signal from the at least one sensor to at least one modulator in operable communication with the at least one sensor.
1 more element
A method of designing a drilling system, comprising:
- selecting a fluid system to have a viscometer reading of less than 8, measured at 6 and 3 rpm;
- selecting a MWD tool and a gap between a rotor and stator,
- wherein one of the selection of the fluid system and the selection of the MWD tool and the gap is made based upon the selection of the other;
- assembling a drilling system with the selected MWD and gap;
- and
- circulating the selected fluid system through the drilling system while drilling a wellbore through an earth formation.
3 more elements
A downhole measurement while drilling system comprising:
- at least one sensor at a drill string locatable downhole during a well operation;
- and
- a communication medium at the drill string capable of transmitting sensed data between the sensor and a surface processor, wherein the communication medium has a viscometer reading of less than about 5, measured at 6 and 3 rpm, and comprises a base fluid and a weighting agent having a d50 less than 25 microns.
Dependencies are inferred from the claim text.