ADS_HPHT.pdf

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10" VENT
VENT TO TOP OF
DERRICK
MGS
PRESSURE
SENSOR
8
FROM C & K
MANIFOLD, 4" PIPE
36" DIAMETER
MUD - GAS
SEPERATOR
REMOTELY
ACTUATED
DOWNSTREAM
CHOKE TEMP.
SENSOR
6
DRILL FLOOR LEVEL
TO SHALE SHAKER
REMOTE
CHOKE
TO MUD/GAS
SEPARATOR
MANUAL
CHOKE
MANUAL
CHOKE
REMOTE
CHOKE
5
DOWNSTREAM
CHOKE TEMP.
SENSOR
MAIN DECK LEVEL
6 Meters
TO PORT
FLARE LINE
TO
STARBOARD
FLARE LINE
DIP TUBE
PRESSURE
SENSOR
7
UPSTREAM KILL
LINE TEMP.
SENSOR
4
GLYCOL
INJECTION
POINT
DATA MONITORING SYSTEM
AND BYPASS CONTROL UNIT
MGS
STBD
PORT
DIP TUBE
PRESSURE
BOP
TO SHALE
SHAKER
TO CEMENT UNIT
MUD PUMPS
UPSTREAM
CHOKE TEMP.
SENSOR
7
8
TEMP.
1,2
KILL LINE
CHOKE LINE
MGS
OPEN CLOSED
OPEN CLOSED
OPEN CLOSED
PRESSURE
UPSTREAM
CHOKE LINE
TEMP.
3
4
5,6
3
DECK LEVEL
UPSTREAM
KILL LINE
TEMP.
ALARM
DOWNSTREAM
CHOKE
TEMP.
SEA LEVEL
REMOTE CHOKE AREA
SUBSEA TEMP.
SENSOR
1
FLEX JOINT
ANNULAR
PREVENTEE
2
SUBSEA TEMP.
SENSOR
RD
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Aberdeen Drilling Schools
&Well Control Training Centre
HIGH PRESSURE
HIGH BOTTOM HOLE TEMPERATURE
HPHT
This course has been prepared by Aberdeen Drilling Schools
using industry standard HPHT operational guidelines.
OBJECTIVES OF THE COURSE
To introduce HPHT operations and highlight the concerns
and hazards of drilling HPHT wells.
To encourage operational personnel to offer suggestions
and recommendations to improve the existing guidelines
and procedures for drilling HPHT wells.
To promote team building between onshore and offshore
drilling personnel.
50 Union Glen, Aberdeen AB11 6ER, Scotland, U.K. Tel: (01224) 572709 Fax: (01224) 582896
E-mail info@aberdeen-drilling.com
www.aberdeen-drilling.com
CE
G
L
&
WEL
C
N
TRE
CONTENTS
Section
1
2
3
4
5
6
COURSE INTRODUCTION
GAS BEHAVIOUR, KICKS AND CONTROL
GAS SOLUBILITY IN OBM'S - EFFECTS ON KICK
BEHAVIOUR
RIG EQUIPMENT SUMMARY
SURFACE GAS HANDLING CAPACITIES AND
PROCEDURES FOR HPHT WELLS
DRILLING AND WELL CONTROL PROCEDURES FOR
HPHT WELL PROGRAMMES, TRAINING AND
COMMUNICATION
SHUT-IN PROCEDURES AND DECISION TREES
BULLHEADING OVERVIEW
VOLUMETRIC METHOD OF WELL CONTROL
STRIPPING
THE EFFECTS OF TEMPERATURES AND
PRESSURES ON MUDS
THE EFFECTS OF BOREHOLE BALLOONING ON
DRILLING RESPONSES
MANAGEMENT OF OPERATIONS
SAMPLE
HPHT WELL CONTROL PROCEDURES (SEMI)
SAMPLE
HPHT WELL CONTROL PROCEDURES (JACK-UP)
7
8
9
10
11
12
13
14
15
Appendix 1.
Appendix 2.
Appendix 3.
Appendix 4.
UKOOA GUIDELINES FOR HPHT WELLS
NPD GUIDELINES FOR HPHT WELLS
HPHT MUD PRESENTATION
HPHT CEMENT PRESENTATION
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1. COURSE INTRODUCTION
CONTENTS
1.1
1.2
GENERAL OVERVIEW
LEARNING FROM THE PAST
CE
G
N
TRE
HPHT Course
&
WEL
LC
HPHT Course - Section 1
1.1 GENERAL OVERVIEW
HSE Definition for HPHT Wells:
Where the undisturbed bottomhole temperature is greater then 150
o
C/300
o
F
and where either the maximum anticipated pore pressure of any porous
formation exceeds 0.8 psi/ft., or pressure control equipment with a rated
working pressure in excess of 10,000 psi, is required.
1.2 LEARNING FROM THE PAST
BACKGROUND AND HISTORY OF HPHT WELLS
(A)
Primary Well Control
B.H.P. > Pf
(i.e.) Mud
(B)
Secondary Well Control
B.O.P.E. Equipment
(C)
Tertiary Well Control
Special or Unusual Problems
1-2

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