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AssigneeBaker Hughes Incorporated
InventorsJohn B. Weirich, Ronald G. Bland, William W. Smith, Jr., Volker Krueger, John W. Harrell, Hatem N. Nasr, Valeri Papanyan
Estimating the term…
The present invention provides a drilling system for drilling oilfield boreholes or wellbores utilizing a drill string having a drilling assembly conveyed downhole by a tubing (usually a drill pipe or coiled tubing). The drilling assembly includes a bottom hole assembly (BHA) and a drill bit. The bottom hole assembly preferably contains commonly used measurement-while-drilling sensors. The drill string also contains a variety of sensors for determining downhole various properties of the drilling fluid. Sensors are provided to determine density, viscosity, flow rate, clarity, compressibility, pressure and temperature of the drilling fluid at one or more downhole locations. Chemical detection sensors for detecting the presence of gas (methane) and H2S are disposed in the drilling assembly. Sensors for determining fluid density, viscosity, pH, solid content, fluid clarity, fluid compressibility, and a spectroscopy sensor are also disposed in the BHA. Data from such sensors may is processed downhole and/or at the surface. Corrective actions are taken based upon the downhole measurements at the surface which may require altering the drilling fluid composition, altering the drilling fluid pump rate or shutting down the operation to clean wellbore. The drilling system contains one or more models, which may be stored in memory downhole or at the surface. These models are utilized by the downhole processor and the surface computer to determine desired fluid parameters for continued drilling. The drilling system is dynamic, in that the downhole fluid sensor data is utilized to update models and algorithms during drilling of the wellbore and the updated models are then utilized for continued drilling operations.
A drilling system for use in drilling a wellbore, said drilling system having a source supplying drilling fluid under pressure to the wellbore, comprising:
A drill string for use in drilling of a wellbore, said wellbore filled with a drilling fluid during drilling of the wellbore, comprising:
A method of determining at a downhole location the relative amount of a selected component material included in a drilling fluid supplied from a surface source to a wellbore during the drilling of said wellbore, comprising:
A system for monitoring a parameter of interest of a drilling fluid in a wellbore during drilling of the wellbore, comprising:
A downhole tool for use in drilling of a wellbore utilizing drilling fluid during said wellbore, said downhole tool comprising at least one fiber optic sensor providing measurements for an operating parameter of the drilling fluid during the drilling of the wellbore, said sensor being one of (i) a chemical sensor, and (ii) a radiation spectrometer.
A downhole tool for use in drilling a wellbore wherein a drilling fluid supplied from a surface location passes through the downhole tool and circulates through an annulus between the downhole tool and the wellbore during drilling of said wellbore, comprising said viscosity measuring device providing signals representative of the viscosity of the drilling fluid at a selected downhole location in the wellbore during drilling of the wellbore.
A drilling system for use in drilling of a wellbore, comprising:
A method of drilling a wellbore with a drill string extending from a surface location into the wellbore, the drill string including tubing extending from the surface and into the wellbore, a drilling assembly carrying a drill bit attached to the tubing, said drill bit disintegration earth formation into cuttings during drilling of the wellbore, said method comprising:
A downhole tool for use in drilling of a wellbore wherein a drilling fluid supplied from a surface source passes through the tool, circulates through the wellbore and returns to the surface during drilling of the wellbore, said downhole tool including a density measuring device for providing signals representative of the density of the drilling fluid at a selected downhole location in the wellbore during drilling of the wellbore.
A drilling system for use in drilling of a wellbore, comprising:
A method of drilling a wellbore with a drill string extending from a surface location into the wellbore, the drill string including a tubing extending from the surface to the wellbore, and a drilling assembly carrying a drill bit attached to the tubing, said drill bit disintegration earth formation surrounding the wellbore into cuttings during drilling of the wellbore, said method comprising:
A downhole tool for use in drilling of a wellbore wherein a drilling fluid supplied from a surface source passes through the tool, circulates through the wellbore and returns to the surface during drilling of the wellbore, said downhole tool including a compressibility measuring device for providing signals representative of the compressibility of the drilling fluid at a selected downhole location in the wellbore during drilling of the wellbore.
A method of determining compressibility of drilling fluid downhole during drilling of a wellbore, comprising:
A downhole tool for use in drilling a wellbore wherein a drilling fluid supplied from a surface source passes through the tool and circulates through the wellbore and returns to the surface during drilling of the wellbore, said downhole tool including a clarity measuring device for providing signals representative of the clarity of the drilling fluid at selected downhole location in the wellbore during drilling of the wellbore.
Dependencies are inferred from the claim text.