1. A method of conducting logging operations, the method comprising:
logging in a borehole penetrating an earth formation using a formation evaluation (FE) sensor, the borehole including a fluid with an added Relative Permeability Modifier (RPM) for inhibiting an invasion of a component of the fluid in the borehole into the earth formation.
2. The method of claim 1 further comprising:
conveying the FE sensor into the borehole; and
adding the RPM to the fluid.
3. The method of claim 1 wherein the RPM further comprises at least one of: (i) a polymer, (ii) nano-size particles, and (iii) submicron sized particles.
4. The method of claim 1 wherein the fluid in the borehole further comprises a formate and wherein the FE sensor further comprises a Nuclear Magnetic Resonance (NMR) sensor.
5. The method of claim 1 wherein the fluid in the borehole further comprises a formate and wherein the RPM is selected to be: (i) reactive with formation grain minerals and form a permeability barrier to formates but not to reservoir fluids, or (ii) non-reactive to hydrocarbons and reduces permeability to water and the formate.
6. The method of claim 1 wherein the RPM further comprises a hydrophilic polymer.
7. The method of claim 1 wherein the RPM further comprises at least one of: (i) an alkaline earth metal oxide, (ii) an alkaline earth metal hydroxides, (iii) an alkali metal oxide, (iv) an alkali metal hydroxide, (v) a transition metal oxide, (vi) a transition metal hydroxide, (vii) a post-transition metal oxide, (viii) a post-transition metal hydroxide, (ix) a piezoelectric crystal, and (x) a pyroelectric crystal.
8. The method of claim 1 further comprising conveying the FE sensor into the borehole on one of: (i) a wireline, and (ii) a bottomhole assembly, conveyed on a drilling tubular.
9. The method of claim 1 wherein the FE sensor is selected from the group consisting of: (i) an NMR sensor, (ii) a nuclear sensor, and (iii) a fluid sampling device.
10. An apparatus configured to conduct logging operations, the apparatus comprising:
a formation evaluation (FE) sensor configured to be conveyed into a borehole in an earth formation;
a device configured to add a Relative Permeability Modifier (RPM) to a fluid in the borehole for inhibiting an invasion of the fluid in the borehole into the earth formation; and
wherein the FE sensor is further configured to measure a property of at least one of: (i) a fluid in the earth formation and (ii) the earth formation.
11. The apparatus of claim 10 wherein the RPM further comprises at least one of: (i) a polymer, (ii) nano-sized particles, and (iii) submicron sized particles.
12. The apparatus of claim 10 wherein the fluid in the borehole further comprises a formate and wherein the FE sensor further comprises a Nuclear Magnetic Resonance (NMR) sensor.
13. The apparatus of claim 10 wherein the fluid in the borehole further comprises a formate and wherein the RPM is selected to be at least one of: (i) reactive with formation grain minerals and form a permeability barrier to formates but not to reservoir fluids, or (ii) non-reactive to hydrocarbons and reduces permeability to water and the formate.
14. The apparatus of claim 10 wherein the RPM further comprises a hydrophilic polymer.
15. The apparatus of claim 10 wherein the RPM further comprises at least one of: (i) an alkaline earth metal oxide, (ii) an alkaline earth metal hydroxides, (iii) an alkali metal oxide, (iv) an alkali metal hydroxide, (v) a transition metal oxide, (vi) a transition metal hydroxide, (vii) a post-transition metal oxide, (viii) a post-transition metal hydroxide, (ix) a piezoelectric crystal, and (x) a pyroelectric crystal.
16. The apparatus of claim 10 further comprising conveying the FE sensor into the borehole on one of: (i) a wireline, and (ii) a bottomhole assembly, conveyed on a drilling tubular.
17. The apparatus of claim 10 wherein the FE sensor is selected from the group consisting of: (i) an NMR sensor, (ii) a nuclear sensor, and (iii) a fluid sampling device.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A method for controlling a hybrid vehicle, the method comprising:
recording a historical load of a vehicle for a defined time period during or after operation of the vehicle;
classifying the historical load for the defined time period in accordance with load category, including a first load category and a second load category wherein the classifying comprises classifying the historical load in accordance with a usage factor comprising a specific task;
determining a present load associated with an electric drive;
assigning a first slew rate control curve if the present load is consistent with the first load category and assigning a second slew rate control curve if the current load is consistent with the second load category for a duration after the defined time period based on the determined present load being consistent with the classified load category.
2. The method according to claim 1 wherein at least one of the load categories reflects a low duty with marked acceleration and cruising.
3. The method according to claim 1 wherein the determining comprises determining a present load category of the present load based upon a user input of a specific task.
4. The method according to claim 1 wherein the first slew rate control curve and the second slew rate control curve are expressed in terms of generator slew rate versus state of charge of an energy storage device of the vehicle.
5. The method according to claim 1 wherein the recording a historical load comprises recording a traction load associated with a traction load detector.
6. The method according to claim 1 wherein the assigning assigns the first slew rate control curve based on a first look-up table entry associated with the first load category and assigns the second slew rate control curve based on second look-up table entry associated with the second load category.
7. The method according to claim 1 wherein the first slew rate control curve is associated with a low duty load category, the first control curve comprising generally lower maximum generator currents than a reference control curve associated with a general purpose load category; the first control curve comprising an intermediate curve region of generally constant current over a wider state of charge range than that of the reference control curve.