SU-90™ Series Unitized Surface Wellhead System Catalog

SU-702™

Surface Wellhead SyStemS

efficient, cost-effective systems for standard

applications

Single-Stack

dual-Stack

multi-Slot

with Vertical or

Horizontal Production

Trees

SU-902™

Surface Wellhead SyStemS

for high pressure, severe service applications

Single-Stack

dual-Stack

multi-Slot

with Vertical

Production Trees

available in a wide range of pressures

for all standard BOP sizes

in 1 Stack or 2 Stack Systems

for platform, jack-up or land applications.

Su SerieS unitized WellheadS SyStemS

SyStem VerSatilityAt the core of each Dril-Quip SU Series Unitized Wellhead System is a unique surface wellhead that incorporates subsea wellhead metal-to-metal sealing technology, providing benefits not available in typical surface wellhead systems.

• Compact size and time-saving features make the SU Series Unitized Wellhead Systems the technical and economic choice

• The SU Series Unitized Wellhead Systems provide a means of utilizing mandrel casing hangers with mudline suspension

• The SU Series Unitized Wellhead Systems simplify rig operations by replacing spooled wellhead components

• System flexibility allows adaptation to most casing programs

• Annulus seal is pressure-energized and can be retrieved and replaced without disturbing the casing hanger or tubing hanger

• Mandrel-type casing hangers simplify installation process

• Fully compatible with mudline suspension systems with patented adjustment sub

• Adjustment in height and tension to ensure wellhead systems on platforms can be installed to identical height

• Metal-to-metal seals can be pressure tested externally as part of an ongoing maintenance program through the life of the well

• Annulus seal is pressure-energized and can be tested from inside the wellhead during drilling operations and outside the wellhead for maintenance program

• Offered with a “stuck casing” solution that maintains full system metal-to-metal sealing without compromise

• Fire-resistant production tree designs offered in compliance with API 6FA, API 6FB and API 6FC

• SU-90® systems can be specified to operate within a temperature range of -75 F to 350 F and up to 15,000 psi

• Field-proven performance

deSign and analySiS

Dril-Quip's Research and Development Department is equipped with a sophisticated computer network. The SU-90 Wellhead System components have been designed and modeled using the most advanced computer techniques. Each wellhead component has undergone rigorous engineering analysis and testing. Prototypes of each system component have been extensively tested to confirm that the product meets the design criteria. This underlines Dril-Quip's commitment to provide advanced technology in precision-crafted products for the oil industry.

All Dril-Quip SU Series Unitized Wellhead Systems are engineered and designed in compliance with API 6A guidelines where applicable, and can be supplied in compliance with European Union Explosive Atmospheres Directive (ATEX) and EPS regulations.

Dril-Quip SU Series Wellheads are manufactured in accordance with API Q1 and ISO-9001 standards and specifications.

1

The SU-90® Platform Wellhead System is available in a single or multiple BOP stack configuration. Casing heads are designed to provide technical and operational flexibility without sacrificing the pressure-containing or load-carrying capacity of the system.

The low pressure SU-90 Casing Head can be equipped with an adjustment ring for adjusting tension or height as required on the primary conductor string.

The high-pressure wellhead can be landed, adjusted, locked and sealed inside the casing head.

The low-pressure casing head is run on a simple drill pipe or full-bore installation tool and can be supplied with customer-specified side outlets and top connections.

featureS

• Low profile, compact design

• Provision for optional circulation paths

• Adjustable landing ring

• External test ports allow for quick testing of the seal assembly with or without BOP stack in place

• Threaded bottom connections in casing head provide quick installation; no field welding required

Casing Heads are available in a variety of sizes:

21 1/4" – 2,000 psi

20 3/4" – 3,000 psi

18 5/8" – 5,000 psi

2

caSing headS

Casing Head Installations

The high-pressure wellhead provides a means of suspending and sealing multiple strings of casing and tubing inside a single wellhead using mandrel hangers.

The high-pressure SU-90 Wellhead is designed to land in either the low-pressure casing head or on the primary conductor casing. In both cases the wellhead can be adjusted for height or tension as required. Additionally, the high-pressure wellhead can be sealed in the casing head, if desired. Side outlets and top connections can be supplied to meet customer specifications.

featureS

• Low profile, compact design

• Provision for optional circulation paths

• Adjustable landing ring

• External test ports allow for quick testing of the seal assembly with or without BOP stack in place

• Interfaces with tubing hanger with a metal-to-metal seal

• Available with a threaded bottom connection in order to provide quick installation; no field welding required

Wellheads are available in a variety of sizes:

13 5/8" – 5,000 psi

13 5/8" – 10,000 psi

13 5/8" – 15,000 psi

18 3/4" – 5,000 psi

18 3/4" – 10,000 psi

18 3/4" – 15,000 psi

3

high preSSure WellheadS

mandrel type caSing hangerS

The SU-90 Unitized Wellhead Systems utilize mandrel type casing hangers. These casing hangers incorporate field-proven subsea tech-nology for landing, sealing and locking casing hangers to the wellhead without external intervention. These operations are performed through the BOP stack.

featureS

• High load-carrying, pressure- containing capacity

• Designed for a radially preloaded metal-to-metal sealing system on the annulus seal assembly

• Large flow-by areas during running and cementing

• Locks the casing hanger automatically to the wellhead

nominal Bore protectorS and Wear BuShingS

The SU-90 Nominal Bore Protector and Wear Bushing protect the wellhead ID during the drilling operation. The Bore Protector is retained into the wellhead and starter head with a friction bind O-ring seal. The Wear Bushing is locked down to the seal assembly with 4 J-lugs mated to slots on the OD of the seal assembly torque nut.

featureS

• Protects the metal-to-metal sealing surface inside the casing head and wellhead

• Easily installed and retrieved with combination tool

• BOP stack can be tested with wear bushings installed

Wellhead Hanger Casing Head Hanger

Wear BushingsNominal Bore Protectors

4

caSing hangerS, nominal Bore protectorS and Wear BuShingS

Seal aSSemBlieS

The SU-90 Seal Assembly incorporates a metal-to-metal sealing system that was developed for, and field-proven in, Dril-Quip’s SS-15 Subsea Wellhead System. Metal-to-metal seals located on the seal assembly ID and OD are driven over a radial surface to energize the annulus seal. The sealing system is radially preloaded. Each seal assembly has two sealing systems for redundancy and to allow testing of the annulus seal from outside the casing head or wellhead.

featureS

• Field-proven, dual metal-to-metal seals

• Simple remote installation

• Interchangeable seal assemblies fit all casing hangers within a given wellhead size

• High pressure-containing capacity

Seal Assemblies are weight-set, pressure-assisted

Wellhead Seal Assembly

Casing Head Seal Assembly

5

Seal aSSemBlieS

The SU-90 Tubing Hanger can be installed on top of the production casing hanger or can be nested inside the production casing hanger. The SU-90 Tubing Hanger accommodates either single-string or multi-string tubing completions.

featureS

• Simple installation

• High-load, high-pressure capacity

• Designed for radial-set metal-to-metal seal

• Large flow-by areas

• Tubing hangers can be landed on top of or nested inside a casing hanger

• Metal-to-metal seals provided on extended neck between tubing hanger and tree adapter

• Tubing hanger and seal assembly are hydraulically set

• Ported for SSSV control lines, chemical injection lines and downhole monitoring equipment

• Field-proven design

Tubing Hanger

OPEN OPEN

OPEN

OPEN

OPENOPEN OPEN

OPEN

OPEN

Single-String Tubing Hanger

6

tuBing hanger

The SU-90 Tubing Hanger Running Tool is a hydraulic tool that can run the tubing hanger and annulus seal in a single trip. Dril-Quip can offer the tubing hanger running tool in a configuration that accommodates either single-string or multi-string tubing completions.

featureS

• High-load, high-pressure capacity

• Tubing hanger and seal assembly are hydraulically set

• Ported for SSSV control lines, chemical injection lines and downhole monitoring equipment

• Allows communication with downhole safety valve throughout the installation process

• Field-proven design

7

tuBing hanger running tool

Running Tools

comBination tool

• Drill pipe tool runs and retrieves nominal bore protector and all wear bushings within a given wellhead size

• Tests the BOP stack with or without wear bushings installed

• Cup tester accessories allow tool to test the seal assembly and BOP stack with wear bushing installed

caSing head running tool

• Threaded running tool available with either drill pipe connection or full- bore configuration

• Available as a clutch type tool for mudline operation

unitized Wellhead running toolS

• Threaded running tool available with either drill pipe connection or full-bore configuration

• Available as a clutch type tool for mudline operations

CASING HeADRUNNING TOOL(211/4"; 203/4")

WELLHEADRUNNING TOOL

(183/4"; 135/8")

COMBINATIONTOOL(203/4"; 211/4";183/4"; 135/8")

�EAL A��EMBL�RUNNING TOOL(183/4"; 135/8")

CA�ING HANGERRUNNING TOOL

(183/4"; 133/8"; � 5/8";�"; 13 5/8"; � 5/8"; �")

CLUTCH T��ECA�ING HANGERRUNNING TOOL

(183/4"; 133/8"; � 5/8";�"; 13 5/8"; � 5/8"; �")



(183/4"; 135/8")




(183/4"; 133/8"; � 5/8";�"; 13 5/8"; � 5/8"; �")


(183/4"; 133/8"; � 5/8";�"; 13 5/8"; � 5/8"; �")



(183/4"; 135/8")




(183/4"; 133/8"; � 5/8";�"; 13 5/8"; � 5/8"; �")


(183/4"; 133/8"; � 5/8";�"; 13 5/8"; � 5/8"; �")

Casing Head Running Tool

(211/4" ; 20 3/4")

Wellhead Running Tool

(18 3/4" ; 135/8")

Combination Tool

(20 3/4" ; 21 1/4" ; 18 3/4" ; 13 5/8" ;

75/8" ; 7")

Alternative Running Tool sizes available upon request8

running toolS

Wellhead, Casing Hanger and Combination Running Tools



(183/4"; 135/8")




(183/4"; 133/8"; � 5/8";�"; 13 5/8"; � 5/8"; �")


(183/4"; 133/8"; � 5/8";�"; 13 5/8"; � 5/8"; �")

Seal aSSemBly running tool

• Drill pipe tool runs all seal assemblies within a given wellhead size

• Sets all seal assemblies using either pressure or torque

• Tests seal assembly and BOP stack in the same trip

• Retrieves seal assembly if necessary

full Bore caSing hanger running tool

• Threaded full-bore running tool available in each casing hanger size

clutch type running toolS

• Available as casing head, unitized well-head and casing hanger running tool

• SU-90 Unitized Wellhead Systems can be used with mudline suspension systems, which may require rotation of the mud-line running tool and the riser string for opening/closing wash ports; clutch type running tool allows left- or right-hand riser rotation while transmitting torque without disengaging from the hanger, casing head or wellhead



(183/4"; 135/8")




(183/4"; 133/8"; � 5/8";�"; 13 5/8"; � 5/8"; �")


(183/4"; 133/8"; � 5/8";�"; 13 5/8"; � 5/8"; �")



(183/4"; 135/8")




(183/4"; 133/8"; � 5/8";�"; 13 5/8"; � 5/8"; �")


(183/4"; 133/8"; � 5/8";�"; 13 5/8"; � 5/8"; �")



(183/4"; 135/8")




(183/4"; 133/8"; � 5/8";�"; 13 5/8"; � 5/8"; �")


(183/4"; 133/8"; � 5/8";�"; 13 5/8"; � 5/8"; �")

Seal Assembly Running Tool

(18 3/4" ; 13 5/8")

Clutch Type Casing Hanger Running Tool

(18 3/4" ; 13 3/8" ; 103/4" ; 9 5/8" ; 75/8" ; 7")

Casing Hanger Running Tool

(18 3/4" ; 133/8" ; 103/4" ; 9 5/8" ; 75/8" ; 7")

Alternative Running Tool sizes available upon requestAlternative Running Tool sizes available upon request 9

SerieS dh, dhS, dm and dl gate ValVeS

The Dril-Quip series DH, DHS, DM, and DL Gate Valves are bidirectional sealing gate valves designed to offer maximum reliability for extended service in the field. All Dril-Quip gate valves are manufactured in accordance with API and ISO-9001 quality standards, and are available in four styles, all qualified to API 6A PR2:

SerieS dh gate ValVeS

• Bore sizes 2 1/16" through 7 1/16", and pressure ranges 2,000 to 15,000 psi

• Metal-to-metal seat seals and non-elastomeric stem packing

• Available in API 6A material classes AA to HH, and PSL levels 2 to 4

• Fire-resistant designs per API 6FA and 6FC

SerieS dhS gate ValVeS


• Metal-to-metal seat seals and non-elastomeric stem packing

• Unique split gate design reduces torque requirements and facilitates simultaneous testing of the upstream and down-stream seats with the valve in the closed position

• Available in API 6A material classes AA to HH, and PSL levels 2 to 4

• Fire resistant designs per API 6FA and 6FC

SerieS dm gate ValVeS


• Metal-to-metal seat seals and elastomer stem packing

• Available in API 6A material classes AA to FF, and PSL levels 2 to 4

SerieS dl gate ValVeS

• Bore sizes 2 1/16", 2 9/16", and 3 1/8", and pressure ranges 2,000 to 5,000 psi

• Resilient/elastomer seat seals and resilient stem packing

• Available in API 6A material classes AA and DD, PSL levels 1 and 2

SeRIeSPressure Ratings

(psi)

Sizes

API Material Classification

Body Construction

Gate-to-Seat Seal

Seat-to-Body Seal

Bonnet-to-Body Seal

Stem Seal

Temperature Range

DH / DHS* DM DL

5,000 / 6,000 / 10,000 / 15,000

2 1/16" to 7 1/16"

AA to HH

Forged

Metal-to-Metal with Tungsten

Carbide Hardfacing

Pressure energized Metal-

to-Metal with Teflon® Second-

ary Seals

Metal-to-Metal with Nitriding or Tungsten Carbide

Hardfacing

Pressure energized

Metal-to-Metal with elastometric Secondary Seals

Resilient Face Seal

elastometric

2,000 / 3,000 / 5,000 / 10,000

2 1/16" to 7 1/16"

AA to FF

Forged

2,000 / 3,000 / 5,000

2 1/16" to 2 9/16" and 3 1/8"

AA to DD

Forged or Cast

Pressure energized

Metal-to-Metal

Spring Pressure energized Teflon®

-35°F to 250°F

Flat Gasket Metal-to-Metal

elastometric

Flat Gasket Metal-to-Metal

Resilient

-35°F to 250°F

MANUALLY OPERATED GATE VALVE

* The Series DHS is the split gate version of the Series DH Gate Valve

10

SerieS: dh, dhS, dm and dl gate ValVeS

fire-Safe gate ValVeS – modelS 6fc and 6fa featureS

• Designs meet standard API specifications

• Metal-to-metal seat-to-body and seat- to-gate seals

• Fire-resistant bonnet design

• The 6FA model is avail-able for Dril-Quip split gate valves

Bonnet featureS

• The Valve is designed so the stem-to-bonnet metal-to-metal backseat will engage in a fire. This is to eliminate the pos-sibility of the packing burning out and creating a new fuel source for the fire. All other com-ponents are designed to withstand the half-hour burn and cooldown without leaking. The pressurized valve must not show any significant leakage during the test.

• The Metal-to-Metal DX® Bonnet Seal is pressure energized and will not leak due to high temperatures.

• A Nut Shroud is added to protect the bonnet bolting from direct flame.

• A Eutectic Ring is positioned above the upper bearing face and will melt in the event of a fire, or if the temperature exceeds 250°F. If this occurs, valve body pressure forces the stem upward and a metal-to-metal backseat seal is engaged. This seal isolates the valve bore and body pressure from the stem packing.

• A Spring Cartridge is used to engage the stem’s backseat when the Eutectic Ring has melted and there is no or low body pressure in the gate valve.

Significant deSign featureS of the api 6fa deSign

• Components of the pressurized valve can withstand a half-hour burn and cooldown and one-time operation without significant leakage

• The Stem Packing is made up of a high-tem-perature Teflon®*-and-metal backup ring that can withstand the heat of a half-hour burn

*Teflon is a registered trademark of DuPont

Upper Roller Bearing

eutectic Ring

Spring Cartridge

Lower Roller Bearing

Gland Nut

Stem Packing

Nut Shroud

Mechanically energized Selective Backseat

6FC Fire-Resistant Design on Slab Gate Valve

Metal-to-Metal DX Bonnet Seal

Pressure energized Selective Backseat

Stem Roller Bearings

Nut Shroud

Gland Nut Stem Packing

eutectic Ring

6FA Fire-Resistant Valve Design

11

dhf SerieS fire-Safe gate ValVeS

Production Trees

Dril-Quip offers a Multi-Slot Wellhead Sys-tem that integrates two or more wellheads inside of one conductor string. Each spe-cially designed wellhead system incorporates features of our field-proven SU-90 or SU-702 Unitized Wellhead Systems.

Dril-Quip’s Multi-Slot Wellhead System includes double and triple well or producing zone completions. The Multi-Slot Wellhead is available in vertical or horizontal tree configu-rations and can accommodate stack valve or block valve tree designs.

featureS

• Maximizes conductor slot utilization

• Compact wellhead design saves space

• Space-saving feature results in smaller platform size requirements

• Fewer connections reduce possible leak paths and save BOP nipple-up/nipple-down time

• Weight-slip hangers for surface casing; mandrel hangers optional

• Available for standard or H2S service

• Simple control line termination block assemblies

• Each well can be drilled and completed independently

• Compatible with surface horizontal completion trees

• Field-proven system performance

12

multi-Slot Wellhead SyStemS

Depiction of conventional Multi-Slot Two- Wellhead System with Stacked Valve Production Trees

TM TM

OPEN

OPEN OPEN OPEN

OPEN OPEN

OPEN OPEN

OPEN

OPEN

OPE

NO

PEN

OPE

N

OPE

NO

PEN

OPE

N

OPEN

OPEN

OPE

N

OPEN

OPE

NO

PEN

R

TM TM

OPEN

OPEN OPEN OPEN

OPEN OPEN

OPEN OPEN

OPEN

OPEN

OPE

NO

PEN

OPE

N

OPE

NO

PEN

OPE

N

OPEN

OPEN

OPE

N

OPEN

OPE

NO

PEN

R

13

Depiction of Dual Zone Multi-Slot Two-Wellhead System with Block Valve Production Trees

Depiction of Multi-Slot Three- Wellhead System with Block Valve Production Trees

072214T © 2014 Dril-Quip, inc. Printed in the USA

Documents

SU-90™ Series Unitized Surface Wellhead System Catalog