Wellbore operations monitoring and control systems and methods
AssigneeVarco I/P, Inc.
InventorsWilliam Leo Koederitz, Terry Lynn Tarvin
Life of this patent
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Abstract
A method for a wellbore operation with a wellbore system, the method, in at least certain aspects, including acquiring with sensor systems data corresponding to a plurality of parameters, the data indicative of values for each parameter, each parameter associated with part of the wellbore system, and, based on said data, calculating a value for each of a plurality of mechanical specific energies each related to a mechanical specific energy for a part of the wellbore system; and, in some aspects, monitoring in real time the value of each of the mechanical specific energies; and, in certain aspects, using such determined values to alter, change, improve, or optimize operations.
Claims28
A method for a wellbore operation with a wellbore system, the method comprising
- acquiring with sensor systems data corresponding to a plurality of parameters, said data indicative of values for each parameter of said plurality of parameters, each parameter corresponding to part of the wellbore system,
- based on said data, calculating a mechanical specific energy value for each of a plurality of mechanical specific energies each related to a mechanical specific energy for a part of the wellbore system,
- monitoring the value of each of the mechanical specific energies,
- wherein the wellbore operation is an operation with a rotating bit and values for the mechanical specific energies are calculated according to the equation for Teale's definition of mechanical specific energy, ES, where
- Es
- =
- WOB
- A
- +
- 120
-
-
- π
-
- (
- N
- )
-
- (
- T
- )
- A
-
- (
- ROP
- )
- and wherein WOB is weight on bit, N is rpm's of a rig's rotary, T is torque at the bit, ROP is rate of penetration, and A is wellbore or bit cross-sectional area.
A computer-readable media having computer executable instructions for a wellbore operation with a wellbore system, the computer-executable instructions performing the following steps:
- receiving from sensor systems data corresponding to a plurality of parameters, said data indicative of values for each parameter of said plurality of parameters, each parameter corresponding to part of the wellbore system,
- calculating, based on said data, a mechanical specific energy value for each of a plurality of mechanical specific energies each related to a mechanical specific energy for a part of the wellbore system,
- wherein the wellbore operation is an operation with a rotating bit and values for the mechanical specific energies are calculated according to the equation for Teale's definition of mechanical specific energy, ES, where
- Es
- =
- WOB
- A
- +
- 120
-
-
- π
-
- (
- N
- )
-
- (
- T
- )
- A
-
- (
- ROP
- )
- and wherein WOB is weight on bit, N is rpm's of a rig's rotary, T is torque at the bit, ROP is rate of penetration, and A is wellbore or bit cross-sectional area, and
- transmitting to receiving apparatus signals indicative of the value of each of the calculated mechanical specific energies.
A method for a wellbore operation with a wellbore system, the method comprising
- acquiring with sensor systems data corresponding to a plurality of parameters, said data indicative of values for each parameter of said plurality of parameters, each parameter corresponding to part of the wellbore system,
- based on said data, calculating a mechanical specific energy value for each of a plurality of mechanical specific energies each related to a mechanical specific energy for a part of the wellbore system,
- monitoring the value of each of the mechanical specific energies,
- wherein the wellbore operation is an operation with a rotating bit and values for the mechanical specific energies are calculated according to the equation
- MSE
- =
- Eff
- b
- ×
- (
- 4
- ×
- WOB
- π
- ×
- D
- 2
- ×
- 1000
- ×
- 480
- ×
- N
- b
- ×
- T
- D
- 2
- ×
- ROP
- ×
- 1000
- )
- wherein
- MSE=Mechanical Specific Energy, in Kpsi
- Effb=Bit efficiency
- WOB=Weight on bit, in lbs
- D=Bit diameter, in inches
- Nb=Bit rotational speed, in rpm
- T=Drillstring rotational torque, in ft-lb
- ROP=Rate-of-penetration, in ft/hr.
A method for a wellbore operation with a wellbore system, the method comprising
- acquiring with sensor systems data corresponding to a plurality of parameters, said data indicative of values for each parameter of said plurality of parameters, each parameter corresponding to part of the wellbore system,
- based on said data, calculating a mechanical specific energy value for each of a plurality of mechanical specific energies each related to a mechanical specific energy for a part of the wellbore system,
- monitoring the value of each of the mechanical specific energies,
- wherein the wellbore operation is an operation with a rotating bit and values for the mechanical specific energies are calculated according to the equation
- MSE
- =
- K
- adj
- ×
- Eff
- b
- ×
- (
- N
- b
- ×
- T
- rel
- D
- 2
- ×
- ROP
- )
- wherein
- MSE=Mechanical Specific Energy
- Kadj=Adjustment factor
- Effb=Bit efficiency
- D=Bit diameter, in inches
- Nb=Bit rotational speed, in rpm
- Trel=Relative measure of drillstring rotational torque, units as per device
- ROP=Rate-of-penetration, in ft/hr.
A method for a wellbore operation with a wellbore system, the method comprising
- acquiring with sensor systems data corresponding to a plurality of parameters, said data indicative of values for each parameter of said plurality of parameters, each parameter corresponding to part of the wellbore system,
- based on said data, calculating a mechanical specific energy value for each of a plurality of mechanical specific energies each related to a mechanical specific energy for a part of the wellbore system,
- monitoring the value of each of the mechanical specific energies,
- wherein the mechanical specific energies are calculated with the equation
- Es
- =
- WOB
- A
- 104
- -
- A
- 102
- +
- 120
-
-
- π
-
- (
- N
- )
-
- (
- T
- )
- (
- A
- 104
- -
- A
- 102
- )
-
- (
- ROP
- )
- wherein A104 is an area of a new hole 104 and A102 is an area of an original hole 102.
Dependencies are inferred from the claim text.