Wellheads, Xmas Trees And Chokes

Completion design and well intervention techniques - course design

Wellheads, trees and chokes Session description Link with competence standards Overall aim of the session Objectives At the end of this session participants should be able to:1.

Range for objectives 1.

Learning style employed 1.

Lecture and discussion

2.

Demonstrate model of wellhead

4.

End of session quiz combined with review

Other elements e.g. HSE, Self, Team, Business Handouts 1. FMC catalogue

Exercises 1. Questions in work book

Trianing aids Cut-away model of wellhead

Prior knowledge / pre reading requirements

Lesson plan Time 2.10 2.15 2.32 2.40 2.45 2.48 2.50 2.55 3.05 3.23 3.25

Topic Introduction What is the function of the wellhead? 1) suspend casing, 2) contain annulus pressure, 3) support BOP, 4) provide access to annulus. Wellhead cross section, casing suspension a) slip and seal, b) mandrel Demonstrate how each of the 4 functional requirements is met Safety considerations regarding removing BOP to install next casing spool Tubing hanger spool Xmas tree – function of tree, xsection of tree FS5 Shell wellhead – fire safe 5,000 psi working pressure, metal to metal seal technology Speedloc clamps. Make-up time 15min speedloc, 30 min clamp, 2 hour flange Clamps Running casing and tubing

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Completion design and well intervention techniques - course design

3.48 3.52 3.56 4.10 4.22 4.33 4.55

SBMS seals. Straight bor metal seals. Clamping force has no effect on the seal efficiency Internal pressure i.e. well pressure assists the sealing. Comparison with ring joint Wellhead system with running tools costs around GBP150k. Comparable composite tree costs 45 – 50k Installing control line in tubing hanger – FMC have installed a wellhead in Norway that has 8 ports through the hanger. Xmas trees – types; composite and monobloc, valve arrangements Horizontal tree; advantages, ESPs (where string is frequently removed) Summarise - end

Link with case study Select appropriate. Calculate

Venue Classroom

Logistics Lecturers instructions

Session maintenance Reference material Catalogue and course notes.

Presenters, current and potential Brian Munro (FMC)

Contacts .

Planned enhancements

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