Category Archives: Well Control

Well Control Kill Sheet Free Download

By | | ,
21 Comments

I got several people asking about well control kill sheets and Jeff Crawford share me the good kill sheets created by worldwide trusted well control company, Wild Well Control.

well-control-kill-sheet

Their kill sheets are Excel files and they support several applications (surface stack, subsea stack, volumetric, lubricate and bleed, bullheading). There are several advantages from these well control kill sheets such as

• Solve problem either simple or complex wells

• Available for multiple casing, liner and tubular sizes

• Semi-automatically draw charts and graphs

• Calculate and display critical well control parameters

• Calculate how many bleed cycles required for volumetric well control

• Estimate maximum surface and pit gain for Volumetric

• Injection fluid vs pressure bleed down for Lube and Bleed

• Safety and working margins are established

It would be benefit you everybody to check out the well control sheets from Wild Well Control company.

Note: The new download links are updated in March 2017.

wild well control

Ultimate Killsheets  by Wild Well Control

Ps, Thanks for wild well control company (http://www.wildwell.com) for creating the good kill sheets. I wish these kill sheets would be advantage for your work. Have a nice day.

Deepwater Horizon Incident VDO

By | | , ,
1 Comment

Transocean demonstrates an excellent animated video of the Deepwater Horizon incident. This video will show you what was happened to the Deepwater Horizon rig’s BOP and there are a lot of things that you can learn from this VDO as sequence of the incident, deep water BOP stack configuration, why the BOP elements were failed, force of high flow velocity, etc.

Please click at the image below to see the full VDO.

Please give me your thought about this VDO.

Advantages and Disadvantages of Driller’s Method

By | | ,
Leave a comment

Many topics of driller’s method have been taught on the drillingformulas.com and I would like to summarize about advantages and disadvantages of driller’s method.

Advantages  of Driller’s Method

 

• Circulation can be established right away so the bottom hole pressure will not increase much due to gas migration.

• Influx can be removed out of the well even though the rig does not have sufficient amount of weighting agent.

• Gas migration is minimized.

• Operation is quite simple when compared to weight and weight method.

• Calculation is simple and drill pipe pressure schedule is not required.

Continue reading →

Slow Circulation Rate (SCR)

By | | ,
4 Comments

Slow Circulation Rate is a circulation rate which will be used in well kill operation. Typically, slow circulation rate pressure (SCR) is recorded from each particular flow rate and the pressure represents pressure loss of the system while circulating. Since there are so many pressure gauges on the rig, you may get confused on the figures. In order to be at the same page for every personnel on the rig, the SCR should be recorded by the pressure gauge that we will use for killing the well.

 

There are a lot of reasons why we should kill the well with slow rate rather than a drilling rate as follows:

 

• To minimize friction pressure

• To allow time to weight up mud if you use wait and weight method

• To reduce pressure on surface equipment

• To allow degasser to separate gas from the mud

• To reduce needs for fast choke operation

• To allow personnel to think if something goes wrong

Continue reading →

Pressure Profile of Drillpipe and Casing Pressure while killing a well with wait and weight method

By | | ,
Leave a comment

This topic will cover about pressure profile both drill pipe and casing pressure while kill a well with wait and weight method.

 

Drill Pipe Pressure

Firstly, we will take a look at the drillpipe pressure. When kill weight mud is displaced in the well, drill pipe pressure drops as per the drill pipe schedule. Once kill weight mud is to the bit, drill pipe pressure is maintained until the well is killed. A pressure profile will look like the following chart.

Continue reading →