Capping Freezing Hot Tapping
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This document discusses three special methods used to deal with problems that may occur during oil production operations: freezing, capping, and hot tapping. Freezing involves using dry ice to form an ice plug and allow removal of faulty equipment under pressure. Capping controls blown-out wells by shutting in pressure using a capping stack. Hot tapping permits connections to live pipes or vessels to add monitoring points without shutting down production. The document provides details on equipment, procedures, and applications for each method to maintain well control and safety during oil production issues.
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Capping Freezing Hot Tapping
- 1. THE COURSE TITLE : 1 By : Ahmed Fatehi Alsaqqaf Hassan Emad Mohamed Hayati Al Taeb Mohamed Najm Supervisor : Mrs. Ayah Abdel Adm Jos
- 2. Contents
- 3. Introduction Objectives Freezing Evaluation Hot tapping Capping We may face a lot of problems and obstacles during oil production operations such as valves malfunction and pipe rusting and others may lead to several disasters, so we need ways to deal with these problems and reduce the pollution of the environment that may happened and continue production if possible All of these needs led to Appearance of some special methods to treat such problems and to keep the well under control also to provide safetyReferences
- 4. Introduction Methodology Research plane Research outcomes Objectives In this presentation we will talk about some of the special methods used to reduce the problems and techniques that is related to this methods such as • Capping • Freezing • Hot tapping also we will talk about the associated applications , equipments and examples in the life process. Introduction Objectives Freezing Evaluation Hot tapping Capping References
- 5. Introduction Objectives Freezing Evaluation Hot tapping Capping References At the end of this presentation the students will be able : To know the treating techniques of the previous methods. To have an over view at the required tools that had been used in that methods . To train to find suitable solutions to solve the problems
- 7. Once the blow out happen and the fire is out, the capping operation begins.Introduction Objectives Evaluation Hot tapping Capping References Freezing Definition :- a technique used to control blown- out wells through shutting in and hold pressure on it. The well is capped on an available flange or on bare pipe, utilizing a capping stack It incorporates a choke and a series of valves which allow the progressive closing of the well.
- 8. Introduction Objectives Evaluation Hot tapping Capping References Freezing There is to kinds of capping according to the enviorment :- • At the surface • Under the water ( offshore )
- 9. Introduction Objectives Evaluation Hot tapping Capping References Freezing Capping equipment :- The equipment differ according to the environment Witch we apply this method in it 1. Capping stack The capping stack is composed of one or more blind rams on top followed by a flow cross with diverter lines.
- 11. Introduction Objectives Evaluation Hot tapping Capping References Freezing How we do it (mechanic):-
- 12. Introduction Objectives Evaluation Hot tapping Capping References Freezing How we do it (mechanic):-
- 13. Introduction Objectives Evaluation Hot tapping Capping References Freezing Application videos for hot tapping
- 14. Freezing
- 15. Introduction Objectives Evaluation Hot tapping Capping References In order to remove the valve with pressure on the drillpipe, one of the solutions is the drillpipe would have to be frozen. This method named freezing Freezing is a technique used to form a temporary ice plug across the bore of tubular or pressure control vessels, while under pressure. Freezing allows faulty equipment to be removed and replaced. Freezing
- 16. Introduction Objectives Evaluation Hot tapping Capping References The equipment we use to do it are:- 1. Wooden box or any box with special properties 2. Dry ice (solid carbon dioxide) Freezing
- 17. Introduction Objectives Freezing Evaluation Hot tapping Capping References what we do !? A wooden box is constructed around the area to be frozen. Then, a very viscous mixture of bentonite and waternspotted across the area to be frozen. Next, the freeze box is filled with dry ice (solid carbon dioxide). Note:- Nitrogen should never be used to freeze because it is too cold. The steel becomes very brittle and may shatter upon impact.
- 18. Introduction Objectives Freezing Evaluation Hot tapping Capping References Several hours may be required to obtain a good plug. ((The rule of thumb is one hour for each inch in diameter to be frozen)). Finally, the pressure is bled from above the faulty valve; it is removed and replaced and the plug is permitted to thaw. Almost everything imaginable has been frozen, including valves and blowout preventers.
- 19. Introduction Objectives Freezing Evaluation Hot tapping Capping References Application videos on valves and blowout preventers videos . valves blowout preventers
- 20. Introduction Objectives Freezing Evaluation Hot tapping Capping References Application videos from life.
- 21. Hot tapping
- 22. Introduction Objectives Freezing Evaluation Hot tapping Capping References Hot Tapping is a method of making a connection into an existing pipe or vessel which is still under pressure or live. Definition :- What is it used for? Additional branches allowing supply to and from other areas of plant etc. Monitoring points for temperature probes etc. Entry points for isolation equipment (Stopples) What Advantages are there? Can be performed with out the need to shut down the plant. No need for loss of production or supply to other areas
- 23. Introduction Objectives Freezing Evaluation Hot tapping Capping References Petrochemical Industry: Hydrocarbons – crude & heavy oils Light oils, diesel, kerosene, petroleum, motor oils Various chemicals Power Generating Industry: Steam & Water Pharmaceutical & Food Industry: Compressed air Food products Water Industry: Potable Water & Sewerage Where can it be Used?
- 34. Introduction Objectives Freezing Evaluation Hot tapping Capping References Coupon catch operation
- 35. Introduction Objectives Freezing Evaluation Hot tapping Capping References Application videos for hot tapping on production pipe :- Hot Tapping and Plugging Video Animation for Hydrocarbon Processing
- 36. Introduction Objectives Freezing Evaluation Hot tapping Capping References Each student must bring his / her paper and write his / her name and specialization chose one of the three methods and write a short summary about it u have 2 min
- 37. Introduction Objectives Freezing Evaluation Hot tapping Capping References http://www.delmarus.com/site234.php https://en.wikipedia.org/wiki/Oil_well_fire www.kshottapping.com Blowout and Well Control Handbook By Robert D. Grace