Surveying Wells with Anticipated Well Control Problems
This article describes the surveying guidelines for wells with potential well control problems.
Magnetic Single Shot / MWD
In Exploration, Appraisal or Development well hole sections, where mobile hydrocarbons are present or potential well control problems could be encountered, regularly spaced Magnetic Single Shot(MSS) (or MWD ) surveys shall be taken at a frequency not to exceed 500 ft. When drilling deviated wells, this frequency shall be increased to a minimum of every 100 ft during build (more if the Directional Driller needs them), turn or drop sections regardless of . . .