The well vent allows equalizing air into the casing, preventing any pump performance issues a vacuum may cause. Proper venting at the well head is also essential for gas removal. For instance, if methane gas, which is lighter than air, is present in your well it can exit through a vented well cap.
[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] The IADC Drilling Manual has recently been updated and is now available in its 13th edition in the IADC Bookstore. This book is the definitive manual for drilling operations, training, maintenance and troubleshooting.
[pdf] 
