Short Medium and Long Radius Wells

Short radius wells, typically re-entries of old vertical wells, have curves with a 143 ft (44 m) radius or smaller that cannot be drilled with conventional motors. They are used to isolate higher-/lower-pressured production zones or water sands without setting and cementing a liner. This type of drilling is desirable when kicking off below a problem formation.

Medium radius wells have curves with a 200-500 ft (61-152 m) radius that can be drilled with conventional motors.

Long radius wells have curves with a 750 ft (229 m) radius or larger that can also be drilled with conventional motors.

Study Questions

  1. Which of the following are applications for drilling a directional well? Select all the correct answers.
  2. Onshore drilling to offshore locations b) Relief wells c) Offshore multiwell drilling d) Horizontal wells e) Multiple exploration wells from a single wellbore
  3. Which of the following are applications for drilling a directional well? Select all the correct answers.
  4. Sidetracking b) Salt dome drilling c) Offshore drilling to onshore locations d) Fault controlling e) Inaccessible locations
  5. Which of the following is the best description of a directional drilling application that is used specifically to kill a well that is blowing?
  6. Salt dome drilling b) Horizontal wells c) Offshore multiwell drilling d) Relief wells
  7. Which of the following is the best description of a directional drilling application that is used specifically to intersect a producing formation horizontally to better produce the reservoir?
  8. Onshore drilling to offshore locations b) Offshore multiwell drilling c) Horizontal wells d) Relief wells
Directional Drilling Salt Dome
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Responses

  • caramella
    How medium radius wells are drilled?
    10 months ago

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