Method and apparatus for a monodiameter wellbore, monodiameter casing, monobore, and/or monowell
An assembly and methods for constructing a MONOWELL includes a monodiameter casing disposed in a monodiameter wellbore having diametric efficiency with a monobore production delivery system disposed within the monodiameter casing. An assembly for constructing a monodiameter wellbore includes a bottomhole assembly having a overgauge hole drilling member, a directional steering assembly, a measurement while drilling tool, and a logging while drilling tool; a work string attached to the bottomhole assembly and extending to the surface; drilling fluids flowing through the work string and bottomhole assembly; chemical casing casing the borehole; expandable casing disposed in the wellbore; and a sealing composition disposed between the expandable casing and the wellbore.
1. A method for achieving a monodiameter wellbore extending through various formations, the method comprising:
extending a work string into the wellbore, the work string having a bottomhole assembly;
flowing drilling fluids through the work string and bottomhole assembly;
drilling the wellbore using an extended gauge drilling member to minimize spiraling of the wellbore;
sending to the surface real-time downhole information from a measurement while drilling tool, a logging while drilling tool, and one or more sensors in the extended gauge drilling member tool;
altering the direction of drilling based on the real-time downhole information using a directional steering assembly; and
chemically casing the wellbore.
2. The method of claim 1 wherein extended gauge drilling member includes an energy balanced bit.
3. The method of claim 1 wherein the directional steering assembly includes a rotary steerable assembly associated with the extended gauge drilling member.
4. The method of claim 1 further including a downhole motor matched to the extended gauge drilling member.
5. The method of claim 1 further including circulating drilling fluids which are matched to the formations.
6. The method of claim 5 wherein the drilling fluids use a membrane efficient mud system which allows the drilling of a consistent tight wellbore.
7. The method of claim 6 wherein the membrane efficient mud system is a water or synthetic based system.
8. The method of claim 7 wherein the drilling fluids produce a mud cake that effectively controls hydraulic pressure, chemical differences, and electrical differences in the formation.
9. The method of claim 1 further including flowing a spottable material through the wellbore.
10. The method of claim 1 further including installing expandable casing in the wellbore.
11. The method of claim 10 further including flowing a sealing composition between the expandable casing and a wall of the wellbore.