Tag Archives: Well Control

IWCF Well Control Quizzes

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My friend just sent me the very useful well control stuff again. This time is the IWCF well control quizzes by Transocean which use to train their people. The well control quizzes each contain 25 questions and are grouped into related topic areas ranging from fairly basic knowledge through to some of the harder calculations that supervisors may come across in their IWCF exam.

There are a total of 8 modules as follows:

1. Basic knowledge in well control

2. Basic pressure (hydrostatic pressure)

3. Warning signs and shut in

4. Shut in conditions

5. Volume and MAASP (Maximum Allowable Anticipated Surface Pressure)

6. Well control methods

7. Some tricky well control questions

8. Subsea well control questions

If you are interested in these handy well control quiz, please click at the image or the link below

 

Additional information: IWCF stands for The International Well Control Forum which is an oil industry Membership Organization established in Europe in 1992. Its primary purpose is to develop and administer well control certification programs for personnel employed in oil well Drilling, Workover and Well Intervention operations.

 

Useful Well Control Handouts from Texas A&M University

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Petroleum engineering department at Texas A&M University has a strong technical in every aspect of oilfield. This is the one of top petroleum engineering universities in USA. Today, I find the very useful well control documents which are used to teach students at the university. There are several topics in the well control. If you are interested in these excellent well control handouts, please check out the following links to download them.

Introduction to well control
Gas behavior and hydrostatic pressure
Kick and gas migration
Gas solubility
Pore Pressure
Pore Pressure Prediction
Other Abnormal Pressure Detection Methods
Logging While Drilling
Fracture Gradients Part#1
Fracture Gradients Part#2
Fracture Gradients Determination
Kick Detection and Control
Off bottom kick
Circulation Kill Techniques Part#1
Circulation Kill Techniques Part#2
Volumetric Well Control
Special Applications in Well Control
Well Control Equipment
Offshore operations for well control
Snubbing and stripping

I wish you would enjoy the well control lectures.

Calculate Bottles Required for Koomey Unit (Accumulator Unit)

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This topic will demonstrate you how to determine accumulator bottles required for Koomey Unit (Accumulator Unit) in order to close the surface BOP stack.

This is a specification of Accumulator (Koomey) Unit.

Accumulator 3,000 psi system

Volume each bottle is 10 gallon.

Pre charge pressure is 1,000 psi.

Minimum operating pressure is 1,200 psi (200 psi over pre charge pressure)

Usable fluid per gallon is 5 gallon.

Safety factor require is 50 %. This safety factor may be different depending on each company’s requirement.

BOP Stack and HCR’s as listed below:

 Equipment  Gallon to open  Gallon to close
 Annular Preventor  4.0  4.5
 Upper Pipe Rams  3.0  3.5
 Blind Shear Rams  3.5  4.0
 Lower Pipe Rams  3.0  3.5
 Choke HCR  0.5  0.5
 Kill HCR  0.5  0.5

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Well Control Kill Sheet Free Download

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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.

Water Kick and Oil Kick Indications

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All of well control articles in this website are based on gas kick assumption. Therefore, all the responses as bottom hole pressure, surface pressure, gas volume, maximum pit gain, etc are influenced by gas expansion and gas migration. In reality, you may face with water influx or oil influx which is quite different than gas influx.

 water-kick-oil-kick

The following indications showing water or oil kick are listed below:

• When the well is shut in, casing pressure will not increase because water and oil don’t migrate.

• When bumping the float, it is quite clear to see where the float is opened in order to obtain shut in drill pipe pressure.

• While circulating influx out of the wellbore, casing pressure will not increase too high because water and oil don’t expand like gas.

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