The guide shoe is simply a plain end device run on the bottom of any type of casingwith a cement or composite bottom and a restricted hole through the center. It is rounded on the bottom so it will pass.
[pdf] The dog collar is temporarily attached to the assembly between the tool joint and the slips. If the slips fail to hold the tool assembly, the dog collar will prevent the entire assembly from dropping through and being lost in the wellbore.
[pdf] While the mechanics of drilling a well are very similar for floating, bottom-founded and onshore operations, the po-tential safety and environmental consequences of an inci-dent ofshore,. .
Another proactive step typically taken to mitigate the in-creased risks of ofshore operations is a shallow hazard assessment, which will examine the risks that might be. .
Simultaneous operations plans (SIMOPs) are developed to consider additional risks that occur when two work activities are being done at the same time within close proximity to one another. Communication of SIMOPs risks and hazards during floating drilling. .
Several proactive steps are typically taken to mitigate the in-creased risks of ofshore operations. One of these proactive measures is an environmental impact assessment (EIA), a. .
Hazard assessments are also conducted for ofshore safe-ty concerns. Safety cases identify the hazards and risks of various operations, and then document how the risk is controlled and.
[pdf] 
