This document provides an overview of high pressure high temperature (HPHT) wells. It defines HPHT wells as having a maximum surface pressure over 15,000 psi or requiring pressure control equipment rated over 15,000 psi. The document outlines a 20-point course on HPHT wells over multiple notes, covering topics like classifications, considerations, mechanisms, challenges, well control, drilling fluids, cementing and material selection. It states well control incidents are much more frequent in HPHT wells compared to conventional wells. The document encourages the recipient to follow the notes and contact the author via email for updates.

1. High Pressure High Temperature
Wells (HPHT)
Note #1
Mahmoud Abdelrazik
Offshore DSV and Technical Instructor for ADC
Contacts: +20 100 079 2174
m.abdelrazik6@gmail.com

2. Important to be updated
• Firstly I would like to thank you for electing the course for
#Every_day_note and wish you getting more knowledge, experience with
what we are going to say there.
• Following the post is very important for your question, and following what
others thinking about and sharing your experience along with others to
have the full image.
• If you will follow all notes, send me an email to m.abdelrazik6@gmail.com
to send you the updates if you don’t have time for linkedin.
HPHT - Note #1 Mahmoud Abdelrazik 2

3. Course Outlines (20 Points in 20 Days)
• We will continue delivering the other courses same way so, keep
updated.
• We will go through 3 points by 3 points and each 9 points will have 1
note of review so as to be refreshed with knowledge.
• That would be great opportunity for a final assessment for each 3
notes, you can solve, send to me to m.abdelrazik6@gmail.com for
yourself to make sure you got the knowledge understood.
HPHT - Note #1 Mahmoud Abdelrazik 3

4. 0
10
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40
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HPHT MPD ERD
HPHT MPD ERD
1st
2nd
3rd

5. High Pressure High Temperature
• Note #1: Introduction
• What is the HPHT?
• HPHT Classification
• HPHT Considerations
• HPHT Mechanisms
• HPHT Challenges
• Well control
• Casing seat selection and casing design
• Drilling Fluid
• Cementing
• Material Selection including e.g. wellheads
HPHT - Note #1 Mahmoud Abdelrazik 5

6. What is The HPHT
• There are two definitions for HPHT:
• API Guideline 17 TR8:
• Maximum anticipated surface pressure greater than 15,000 psi and
flowing temperature greater than 350 deg F
• OR requirement for pressure control equipment PCE or well control
equipment with rating greater than 15,000 psi
• Health, Safety Executive UK
• Non distributed temperature > 300 deg F
• Pore pressure gradient > .8 psi/feet
• Pressure control equipment > 10,000 psi
HPHT - Note #1 Mahmoud Abdelrazik 6

7. What is The HPHT
HPHT - Note #1 Mahmoud Abdelrazik 7

8. What is The HPHT
HPHT - Note #1 Mahmoud Abdelrazik 8

9. HPHT Classification
HPHT - Note #1 Mahmoud Abdelrazik 9

10. HPHT Classification
In General
HPHT - Note #1 Mahmoud Abdelrazik 10

11. HPHT Worldwide Experiences
Falcao, 2007
HPHT - Note #1 Mahmoud Abdelrazik 11

12. HPHT Considerations
• Two Important
considerations for design
1.The margin
2. ECD’s (Effective
Circulating Density
HPHT - Note #1 Mahmoud Abdelrazik 12

13. HPHT Considerations
• Two Important considerations for design
1. The margin
2. ECD’s (Effective Circulating Density
HPHT - Note #1 Mahmoud Abdelrazik 13

14. HPHT Mechanisms
• Depositional Effect
• Diegetic Effect
• Tectonic Effects
• Structural Causes
• Thermodynamic Effects
HPHT - Note #1 Mahmoud Abdelrazik 14

15. HPHT Challenges
• Well control operation and
equipment
• Drilling fluid
• Cementing
• Material selection
• Wellhead
• Downhole tools reliability and
durability with high temperature
• Measurement reading accuracy
• Safety issues
• seals
• Others
HPHT - Note #1 Mahmoud Abdelrazik 15

16. HPHT Challenges
HPHT - Note #1 Mahmoud Abdelrazik 16

17. HPHT Challenges
HPHT - Note #1 Mahmoud Abdelrazik 17

18. HPHT Challenges
0
5
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25
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Well Control Drilling Fluid Cementing Others
HPHT Challenges
HPHT Challenges
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19. HPHT Well Control
• Well control incident in
normal pressure wells 4-5%
for each 20-25 wells
• HPHT wells incident
frequency 1-2 incident per
well (100-200%)
*** Worldwide statistics for N.S operating
companies
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
Conventional HPHT
Chart Title
WC Incidents f Drilled Wells
HPHT - Note #1 Mahmoud Abdelrazik 19

20. End of Note #1 Definition of HPHT
• Later, we have about 19 notes
• 13 Notes for Well control
• 1 Note Rig equipment summary
• 1 Note Management of the operation
• 1 Note Samples of HPHT guidelines (HSG’s)
• 1 Note HPHT Drilling Fluid
• 1 Note HPHT Cementing
• 1 Note HPHT Standards
• Keep Following for the updates.
HPHT - Note #1 Mahmoud Abdelrazik 20

21. Thank you, and keep following
************
Next Note, Note 2; Gas behavior, kicks and control for
HPHT
HPHT - Note #1 Mahmoud Abdelrazik 21