I have been asked by new personnel on the rig about making a drill pipe connection using a spinning chain. With our technology in the drilling industry, people rarely see how old school drilling hands make up a connection.
A drilling jar is used to increase pulling capacity to free the stuck pipe and an accelerator is used to intensify force generated by the drilling jar at the upper depth of the well.
This video demonstrates how a drilling jar and an accelerator are activated to free the stuck pipe.
Summary from this video
• The more you pull on the drilling jar before it is tripped, the more power you will get from the drilling jar.
• Drill collars placed above the drilling jar enhance the performance of the hydraulic jar.
• The jar accelerator is used to intensify effect of jar at any depth. Use of the accelerator is very effective in a shallow fishing operation.
• The accelerator helps keep the energy generated by jar impact from being lost up hole.
If you cannot see the video for some reasons, please check out this link http://youtu.be/w-9gd2eeibc.
I wish you would enjoy learning about the drilling jar and the accelerator.
Many people don’t have any idea about the casing drilling therefore I would like to share the casing drilling operation VDO.
This video demonstrates the overall casing drilling operation. The steps of the casing drilling operation are as follows:
This is a short VDO demonstrating wash over operation with washing tool.
If you cannot see it, please find it via youtube here http://youtu.be/2kIQFuyj_bQ
When the wellbore is collapsed and there are formations over the fish, you need to wash over the top of fish in order to clear any sands or debris.
(Washover Pipe)
The washover pipe is used for this operation. It will slip over the stuck pipe and drilling mud will flush out any debris in the annulus between pipe and wellbore. When the top of fish is clean, you can run in hole with fishing assembly to engage and recover the fish down hole.
Note: This VDO is a part of Weatherford Fishing Service.
This animation demonstrates how to drill an oil well on land and it takes only 1.5 minutes. The process is started from driving the conductor to completing the wells.
What will you learn from this VDO?
• Drive conductor
• Drill surface section, run casing and cement
• Install wellhead spool
• Nipple up BOP
• Drill intermediate section, run casing and cement
• Install next wellhead spool
• Nipple up BOP
• Drill production section, run production casing and cement
• Install wellhead with already included perforations and completion string (tubing and packer)
Even though the VDO miss some steps as perforating, running completion, and set packer, it still give people good idea on how the drilling work.
