Agenda

Agenda
• Arrival/Welcome
• Safety Orientation
• Facility Tour
• Presentation on Basic Wellhead and API Requirements
• Lunch
• Stack-up of MBU-LR Speed Head System/Conventional
Wellhead System/Overview of Frac Tree Equipment
• Discussion | Q&A
Conventional Assemblies
• Include the casing head, casing
hangers, spool sections, tubing head,
tubing hanger, valves and fittings
• Provides safe and adequate means for
supporting and attaching blowout
control equipment during drilling
• Provides sealing between casing
strings and a connection for the
Christmas tree
• Requires manipulation of BOP’s with
each added section
• Tubulars suspended on “slips”
Casing Heads
O-Ring
Groove
Test Port
C2 Casing Head
(With FPO’s)
C2-BP Casing Head
(With Two Lockscrews)
Available with Threaded or
Slip-on and Welded bottoms
C2 Casing Head
(With LP Outlets and Baseplate)
Tubing Heads
Test Port
CTH Tubing Head
(With Secondary Bushing)
CTH Tubing Head
(With integral bottom)
Slip Type Casing Hangers
C2 Casing Hanger.
Standard automatic sliptype casing hanger. Used
to suspend medium
casing loads (50% joint
strength) in C2 & C2BP
Casing Heads
C1 Casing Hanger and H
Plate. Non-Automatic sliptype hanger. Used to
suspend light to medium
casing loads in C2 &
C2BP Casing Heads
C9 Casing Hanger. Heavy
duty automatic slip-type
casing hanger. Used to
suspend high casing
loads in C9 & C9BP
Casing Heads
Mandrel Hangers
One Piece Mandrel Hanger
Fluted Mandrel Hanger
Tubing Hangers and Tubing Head Adapters
BPV Threads
BPV Threads
CTH-2W
CTH-2W wrap around
hanger with BO2 coupling
and BO2 tubing head
adapter
CTH-EN with EN tubing
head adapter
BPV Threads
T40 Hanger with T40
tubing head adapter
Multi-bowl Wellhead Systems
11” 10M
11” 5M
MBS
MBU
Multi-bowl Wellhead Systems
Lock-Ring
Threaded-on Flange
2” LP
3” LP
Landing Ring
20” Casing
13-3/8” Casing
9-5/8” Casing
5-1/2” Casing
MBU-T
MBU-LR
‘HPS’ Elastomer Secondary Seals
Interference fit provides pressure
energized seal. No plastic packing
required.
Springs in corners
prevent extrusion
Large ID interference
provides sealing on
rough casing
Type ‘P’ Elastomer Seal
Metal retainer rings prevent
extrusion
Seal energized against
casing with plastic
packing injection
‘Dovetail’ Elastomer Seals
Commonly used as test plug and large O.D. seals
Dovetail shape locks
seal into groove
Tapered edges help
prevent extrusion
Wide seal surface
provides improved
sealing
Type ‘S’ Elastomer Seal
Metal springs in corners to
prevent extrusion
OD bump provides
interference fit allowing
seal to be pressure
energized
Lockscrews
Threaded Lockscrew
Integral Lockscrew
API Ring Gaskets
R Gasket
5,000 PSI
RX Gasket
5,000 PSI
BX Gasket
10,000-15,000 PSI
Frac Valve Comparison
•
•
DS-BSFC 7-1/16” 10M Valve
Two Seat Seal Rings
An Inner and Outer
Seal Ring That are
Both Lip Sealed and
Pressure and Spring
Energized
CW FL-R 7-1/16” 10M Valve
Frac Valves
Detail of Seat with Seals
7-1/16” 10M
Detail of Seat with Seals
Wellhead/Christms Tree Safety
Potential Leaks
• Bonnet/Body
• Stem
• Body Fittings
Wellhead/Christmas Tree Safety
“Line of Fire”
• Test or injection
fittings
• Lockscrews
Wellhead/Christmas Tree Safety
Hidden Pressure
Wellhead/Christmas Tree Safety
One-Piece for lower pressures
Two-Piece for higher pressures
Wellhead/Christmas Tree Safety
Back Pressure Valves
Wellhead/Christmas Tree Safety
Body Fitting
API Flange Bolting
• Flanges under pressure see a separation force equal to
the pressure times the area inside the ring gasket.
F=PxA
• This separation force is contained by the flange bolting.
Thus, larger flanges and higher pressure flanges have
larger bolts and/or more bolts.
• As the bolt diameter increases the amount of make up
torque goes up.
• API 6A publishes recommended make-up torques for API
bolting.
f = 0.07 Xylan
Coated
f = 0.13 Standard
Lubricant
Casing Effects During Frac
Suspension
point in
wellhead
Top of
cement
Initial Hanging
Weight
Cold frac fluid
causes casing to
contract increasing
load on slip
Pressure causes
casing to balloon
increasing load on
slip
Specification for Wellhead and
Christmas Tree Equipment
• API Specification 6A
• Twentieth Edition, October 2010
• ISO 10423:2009 (Modified), Petroleum and
Natural Gas Industries- Drilling and Production
Equipment- Wellhead and Christmas Tree
Equipment
API 6A Basic Contents
435 Pages
• Design and performance
• Materials
• Welding
• Quality control
• Equipment marking
• Storing and shipping
• Equipment specific requirements
• Repair and remanufacture
• Various Annexes covering purchasing guidelines, design,
testing, etc.
API 6A Product Specification
What does it mean?
6A-U-EE-1.5-1-1
PR – Performance
Requirement
API Spec 6A
Temperature
Class
Material
Class
PSL – Product
Specification
Level
Temperature Class
• Determined by the maximum flowing temperature in
the wellhead or the mud circulating temperature and
the minimum seasonal external temperature.
• API Designations
o K ………… -750F to 1800F
o L ………… -500F to 1800F
o N ……….. -500F to 1400F
o P ………… -200F to 1800F
o S …………
o T …………
o U …………
o V …………
o X …………
o Y …………
00F to 1400F
00F to 1800F
00F to 2500F
350F to 2500F
00F to 3500F*
00F to 6500F*
* Non-standard Ratings
Material Class
CO2 Partial Pressure
H2S Partial Pressure
0 to < 0.05
psia
0.05 to 0.5
psia
> 0.5 to 1.5
psia
> 1.5
psia
0 to < 7
psia
AA
Non-sour
Non-corrosive
EE-0.5 or DD-0.5
Sour
Non-corrosive
EE-1.5 or DD-1.5
Sour
Non-corrosive
EE-NL or DD-NL
Sour
Non-corrosive
7 to 30
psia
BB
Non-sour
Slightly Corrosive
EE-0.5
Sour
Slightly Corrosive
EE-1.5
Sour
Slightly Corrosive
EE-NL
Sour
Slightly Corrosive
> 30 to < 200
psia
CC
Non-sour
Moderate to
Highly Corrosive
FF-0.5
Sour
Moderate to
Highly Corrosive
FF-1.5
Sour
Moderate to
Highly Corrosive
FF-NL
Sour
Moderate to
Highly Corrosive
> 200
psia
CC or HH
Non-sour
Highly Corrosive
FF-0.5 or HH-0.5
Sour
Highly Corrosive
FF-1.5 or HH-1.5
Sour
Highly Corrosive
FF-NL or HH-NL
Sour
Highly Corrosive
Product Specification Level (PSL)
• PSL 1, PSL2, PSL3, PSL3G, PSL4
• Quality control requirements such as material
certifications, NDE, etc. that increase with the
severity of service.
• API 6A Annex A provides purchasing guidelines for
selecting the proper PSL of Primary Equipment
o Tubing Heads
o Tubing Hangers
o Tubing Head Adapters
o Lower Master Valves
Performance Requirement (PR)
• Cycle testing of the designs
• Cycles may include pressure, loads, open-close, etc.
depending on product being tested
• PR1 is minimum API cycle requirements found in the
equipment section of the Specification 6A
• PR2 adds additional cycles
Standard Materials for API 6A Materials Classification
Body, End and Outlet Connections
Material Class
Mandrel Hangers
2K, 5K, 10K
15K
AA
4130 60K
(CMS-102)
4130 75K
(CMS-103)
4140 110K
(CMS-106)
BB
4130 60K
(CMS-102)
4130 75K
(CMS-103)
17-4 PH
(CMS-303)
CC
410SS
(CMS-301)
410SS
(CMS-301)
17-4 PH
(CMS-303)
4130 80K
(CMS-104)
Or
4140 80K
(CMS-105)
DD
4130 60K
(CMS-102)
4130 75K
(CMS-103)
EE-XX
4130 60K
(CMS-102)
4130 75K
(CMS-103)
FF-XX
410SS
(CMS-301)
410SS
(CMS-301)
17-4 PH
(CMS-303)
Or
Inconel 718
(CMS-304)
HH-XX
------
------
Inconel 718
(CMS-304)
Bull Plugs, Valve Removal
Plugs and Back-Pressure
Valves
4130 60K (CMS-102)
Product Plan - Quality Control Requirements for Wellhead Bodies and Assemblies
The following chart details the Quality Control Requirements for all bodies. Applies to Casing and Tubing Heads,
Cross-Over Connectors, Tubing Head Adapters, Top Connectors Tees and Crosses, Adapter and Spacer Spools,
Casing and Tubing Hangers, Flanged Connectors Threaded Connectors, Other End Connectors.
Parameter
PSL 1
PSL2
PSL3
Tensile Testing
CMS-002 and
Material Spec
Impact Testing
CMS-004
Chemical Testing
CMS-002 and
Material Spec
Hardness Testing
CIR-002
CIR-002
CIR-002
Process Router & EPS
Dimensional
CIR-001
CIR-001
CIR-001
Process Router & EPS
CMS-002 and Material CMS-002 and Material
Spec
Spec
Comments
Compare MTR to Material Spec
Section 8.0 & EPS
CMS-004
CMS-004
Compare MTR to Material Spec
CMS-002 and Material CMS-002 and Material
Spec
Spec
CIR-004 or
CIR-004 or
CIR-004 or
TTM-WI-7.5.1
TTM-WI-7.5.1
TTM-WI-7.5.1
Traceability
Heat Traceable
Heat Traceable
Visual Exam
CIR-003
CIR-003
---
CNT-002 or
CNT-002 or
Surface NDE
--CNT-004
CNT-004
Thread Gauging
Compare MTR to Material Spec
End and Outlet Connection Threads
Gauge 100%
Heat Traceable & Heat PSL-1/2-Trace by heat numbers
Lot
PSL-3-Trace by serial numbers
Process Router & EPS
Volumetric NDE
---
---
CNT-005
Prior to Machining
Weld NDE
---
CNT-008
CNT-008
Process Router & EPS, if applicable
Marking
MD Drawing
MD Drawing
MD Drawing
Serialization
---
---
Each component
Hydrostatic Test
CTS-001
CTS-001
CTS-001
Assembly Traceability
CTS-001
CTS-001
CTS-001
Process Router & EPS
Work Order-sequential number
PSL-3 – Chart Recorder Required
PSL-1/2- Record heat number of body
PSL 3- Record heat and serial number
Set Out Reports
Assembly Serialization
---
API Monogram
TTM-MSP-A-1
Work Order-sequential Work Order-sequential
number
number
TTM-MSP-A-1
TTM-MSP-A-1
Process Router
Process Router & EPS
Impact Testing
Minimum Average Impact Value
Transverse Direction - Ft-Lb (J)
Temperature
Classification
Test
PSL 1
PSL 2
PSL 3
K
-75 (-60)
15 (20)
15 (20)
15 (20)
L and N*
-50 (-46)
15 (20)
15 (20)
15 (20)
P
-20 (-29)
--
15 (20)
15 (20)
S
0 (-18)
--
--
15 (20)
T
0 (-18)
--
--
15 (20)
U
0 (-18)
--
--
15 (20)
V
0 (-18)
--
--
15 (20)
Cactus Record Requirements
Bodies, End and Outlet Connections,
Mandrel Tubing Hanger and Casing
Hanger
PSL-1
PSL-2
PSL-3*
Material Test Reports: Chemical analysis,
tensile test, impact test (if required) and
hardness test
X
X
X
Weld Process Records: WPS, WPQR and
WQR
X
X
X
Welding Process Records: Welder
identification, weld procedures, filler
material type, post-weld heat treatments
X
NDE personnel Qualification Records for
Weld Metal Corrosion Overlay on Bodies
X
X
X
Hardness Test
X
X
Actual Hardness
Dimensional Inspection
NDE Records: Surface NDE, Weld
Volumetric NDE, and Repair Weld NDE
Volumetric NDE
Heat Treatment COC
Non-Metallic Seals
X
PSL-1
X
X
X
X
X
PSL-2
PSL-3
Batch Traceability, Cure date certification,
Shelf-life expiration date certification
Bullplugs, Valve-Removal Plugs and BackPressure Valves
Assembled Equipment Records
Pressure Test Records: Actual test
pressure, holding period duration
X
Material Test Reports : Chemical analysis, tensile test, impact
test, and hardness test
PSL-1
PSL-2
PSL-3*
X
X
Pressure Test Records: Hydrostatic Test
Chart
X
Assembly Traceability Record
X
*All required records for PSL3 components & assemblies shall reference the specific part serial number.
Records to be Furnished to Customer
Bodies, End and Outlet Connections,
Mandrel Tubing Hanger and Casing
Hanger
PSL-1
PSL-2
PSL-3*
--
--
--
PSL-1
PSL-2
PSL-3
--
--
--
PSL-1
PSL-2
PSL-3*
Certificate of Compliance – stating that
equipment conforms to PSL 3 of API Spec
6A and the temperature and material
class
--
--
X
Pressure Test Records: Actual test
pressure, holding period duration
--
--
X
Pressure Test Records: Hydrostatic Test
Chart
--
--
X
Assembly Traceability Record
--
--
X
No records are required
Non-Metallic Seals
No records are required
Assembled Equipment Records