Well Control - Deviated and Horizontal wells All hydrostatic pressure-related calculations should be based on true vertical depth values. This means that the standpipe kill graph of a deviated well has a different curve as compared to the graph prepared for a vertical well due to the behaviour of Pdp.
Horizontal well completions have been used in a variety of situations to increase well productivity, improve reservoir management, and access incremental reserves that could not be developed economically with vertical wells. While the first horizontal wells were drilled in competent formations, eventually soft formations were completed ...
Kick behaviour can be significantly different in highly deviated and horizontal wells. If influx is mainly gas, problems can be experienced getting the gas to move out of the horizontal section. It maybe impossible to remove the gas if the horizontal section is greater than 90 degrees.
This is a great article, and tackles a subject that is always the topic of heated discussions. In general, Drilling Engineers are very aware of poor success rates associated with setting plugs in highly-deviated, or horizontal hole sections. If there is a way to avoid setting plugs, then it is often found.
A horizontal well may be defined as a well which is drilled to an inclination of 90 , and maintains this inclination for a significant distance. Owing to the need for special equipment and the longer drilling times that must be expected, horizontal wells are considerably more expensive than conventional deviated wells.
Cutting concentration pr ediction in horizontal and deviated wells . ... Xanthan gum is commonly used in drilling fluids to provide viscosity, solid suspension, and fluid-loss control. However, it ...
One tool on the market is a downhole tractor that can reach the end of ER horizontal or highly deviated wells without deploying drill pipe or coiled tubing conveyance methods. This wireline-deployed, self-propelled robotic device can push or pull wireline tool strings out to the end of the wellbore.
A rod-driven PCP system installed in deviated/horizontal wells must be designed to handle the interaction between the rod string and tubing that can cause the following failures. Discover how we designed progressive cavity pumps for horizontal and deviated wells in our customer testimonial.