Rotating Control Devices
1
At Balance
®with Smith
1
HOLD
®1500 and 2500 Rotating Control Devices
2-3
HOLD
®Offshore Conversion Kit
4
Marine Riser Installation
5
RDH 2500
®Rotating Control Device
6
Hydraulic Power Unit/Lubrication System
7
DHS 1400 Rotating Control Device
8
Model 7068 Rotating Control Device
9
Model 8068 Rotating Control Device
10
Model 7368 Rotating Control Device
11
Model 8068-G Rotating Control Device
12
Rotating Control Device Accessories
13
TABLE OF CONTENTS
1
Rotating Control Devices
“Under Pressure…In Control”Smith Services is an industry leader in providing Rotating Control Devices (RCD), also known as rotating heads. An RCD seals around the drillstring components, diverting dust, mud, air/gas, mist, foam or steam away from the rig floor. From conventional air, gas and geothermal drilling to to-day’s complex Underbalanced Drilling (UBD) and Managed Pressure Drilling (MPD) projects, Smith Services has RCDs designed for the job. Smith products are backed by experienced operations and service personnel en-suring that the application, installa-tion and demobilizainstalla-tion are executed properly.
The stripper element is the critical component of the Smith Services RCD. This is the active barrier be-tween the fluids in the wellbore and the rig floor personnel. A stretch-fit seal is created by the stretch inter-ference fit between the kelly/drill pipe and the ID of the stripper ele-ment. This ensures a positive seal at all times. Seal reliability and stripper element life are maximized through the strict material quality and manu-facturing process controls used to build each Smith Services stripper element.
The Stretch-Fit Seal Advantage
Stretch interference fit around •
the drill stem components to seal 100 percent of the time
Stripper elements that are easily •
replaced at the rig
• Maintainable by the rig crew
• Seal that is not lost in the event of any type of hydraulic or elec-trical power disruption
• Seal that is enhanced in the pres-ence of wellbore pressure
Applications
Rig site safety is the main reason •
for utilizing an RCD. This piece of equipment enables drilling oper-ations to continue while isolating the drilling personnel from po-tentially harmful wellbore fluids and gasses
Conventional air, mist, foam and •
gas drilling require an RCD for the isolation and redirection of the wellbore discharge
RCDs protect the environment by •
directing potentially harmful well-bore fluids and gasses through the processing equipment on location, before being returned to the atmosphere
• Underbalanced and managed pressure drilling operations re-quire the use of an RCD to safely direct the wellbore flow through the necessary processing
equip-ment as drilling operations prog-ress. An RCD is required in all types of UBD & MPD operations, however, a good deal of planning must be done to ensure the right equipment and the appropriate stripper elements are selected
• Geothermal drilling requires an RCD designed to operate at high temperatures. High-temperature stripper elements are also neces-sary
• Drilling risks from problems such as lost circulation, fresh water flows or unexpected events from wildcat exploration wells can be mitigated with the use of an RCD to control potential influx
Note: These products, regardless of pressure ratings,
are diverters and not blowout preventers.
Note: The published test pressure ratings contained
herein pertain to the bearing section lower seal assem-blies only and do not apply to any of the stripper ele-ments. Further to this, Smith Services, a Business Unit of Smith International, Inc., does not guarantee, either expressed or implied, the pressure ratings published in this or any other printed materials.
The At Balance Automated Pressure Drilling Services provide a pressure management method which increases safety, enhances performance and reduces drilling costs. This revolutionary technol-ogy uses the Integrated Pressure Manager™ (IPM), which combines a high speed programmable system with a real-time hydraulics model to control bottomhole pressure with unmatched speed and precision. Combined with the Smith HOLD Rotating Control Device, customers now have a high-performance solution for their most challenging managed pressure drilling applications.
At Balance
®
with Smith
2
HOLD
®
1500 and 2500 Rotating Control Devices
The HOLD Rotating Control Device comes in two sizes: the HOLD 1500 and the HOLD 2500. They are both designed with rig safety and opera-tional reliability in mind. The hydrau-lically operated lock-down system eliminates the need to send person-nel below the drilling floor to release primary or secondary locking systems when installing or replacing the strip-per element. These elements can be changed independent of the bearing assembly, saving additional rig time and eliminating the need for excess inventory on location.
The HOLD Advantage
HOLD 1500 - Rated to 1500 psi •
operating pressure and up to 13 3⁄8" through the bearing
as-sembly
HOLD 2500 - Rated to 2500 psi •
operating pressure and up to 12 1⁄4" through the bearing
assembly
Static test pressure rated for: •
HOLD 1500 - 1,500 psi
HOLD 2500 - 3,000 or 5,000 psi Rig personnel safe on the rig •
floor during release and removal of the seal element
Designed for safe, reliable fluid •
diversion
Reduced trip time and improved •
well site safety
Features and Benefits
Improved rig safety •
Control console located conve-•
niently on the rig floor
Stretch-fit stripper element to •
provide an uninterrupted well-bore seal
Large heavy-duty tapered roller •
bearings to provide low-torque rotation and load support
Continuous circulation system •
lubricates bearings and seals for reliable service
Independent high-pressure seal •
systems for optimum perfor-mance
Full range of stripper elements •
for oil, gas or geothermal drilling Real time wellbore pressure sen-•
sor and chart recorder
Remote Hydraulic Operation
The HOLD RCD enables the complete replacement of the stripper element without going below the rig floor to unbolt any primary or secondary locking bolts to unlock the clamp. The HOLD RCD offers a superior clamping system that is hydraulically actuated for both locking and unlocking. The driller operates all hydraulic systems from a control console installed con-veniently on the rig floor. The remote operated hydraulic clamp improves rig safety and decreases element re-placement time.
Features and Benefits
Complete hydraulic lock-down •
and release of the stripper ele-ment
Control console conveniently lo-•
cated on the rig floor
Fail-safe locked mechanism that •
requires hydraulic pressure to open
Safety Interlock System that •
prevents release of the seal ele-ment in the presence of wellbore pressure
Secondary mechanical locking •
system not required
Visual indicator pin on the head •
that confirms when the system is locked down
Focus on HSE
The offshore kit option for the HOLD 1500/2500 is the only system cur-rently available which is in compli-ance with 100% zero environmental discharge. In the event of a stripper element failure, the released fluids are safely contained within the over-shot riser, preventing minor environ-mental incidents from impacting rig operations. The offshore kit is easily adapted to land applications where zero discharge compliance require-ments are in effect.
The HOLD RCD requires the High-Pressure Hydraulic Skid for rig site operation.
Pressure ratings have been determined through controlled laboratory test procedures. Due to the uncontrolled environment of well drilling opera-tions, Smith International, Inc., its Business Units, Agents and Affiliates make no warranty, either expressed or implied, on the pressure ratings contained herein. Smith International, Inc. does not, under any circumstances, recommend that its rotating drilling heads be used as primary blowout prevention equipment.
Specifications
HOLD 1500 HOLD 2500
Rotating Test Pressure 1,500 psi 2,500 psi
Static Test Pressure 1,500 psi 3,000 psi/5,000 psi
Maximum RPM 150 rpm 150 rpm
Height 58” 58”
Maximum Bearing 13 ⁵⁄₈” 12 ¼”
Rotary Drive Yes Yes
Top Drive Yes Yes
3
HOLD RCD Components
1. Drive Assembly 2. Stripper Element
3. High-Pressure Seal Section 4. Mounting Spool
5. Visual Indicator Pin 6. Latching Lug 7. Bearing Assembly 8. Wellhead Adapter Spool
9. Inlet Flange to match Annular BOP
1 2 8 9 7 3 4 5 6
4
1
2
3
}
The HOLD Offshore Conversion Kit can be installed on either the HOLD 2500 RCD or the HOLD 1500 RCD bearing section as needed. The Offshore Conversion Kit modifies the top of the HOLD RCD to provide a custom flange at the top of the RCD. A typical installation would provide a top flange with a welded-on 24 inch OD Overshot Mandrel to engage the Overshot Packer for jack-up or tension-leg drilling platform installation, however, almost any configuration of equipment can be provided.
While the Offshore Conversion Kit is not designed to be a struc-tural member of the Marine Riser, it provides a fluid connection to enable flow through the RCD to
the diverter and bell nipple used in many typical marine installa-tions, and substantial side loads can be accommodated which help maintain RCD alignment with the rotary or top drive above.
A 16.8 inch minimum ID is re-quired above the RCD to allow installation of the stripper rub-ber elements. The maximum OD of the bearing assembly with the conversion kit installed is 30 inch-es, and it adds approximately 3 inches to the height of the RCD.
HOLD Offshore Conversion Kit Components
1. Overshot Mandrel 2. Special Top Flange 3. Offshore Conversion
HOLD 2500 Bearing Section with Offshore Conversion Kit installed
Top view looking into the RCD Control Console
HOLD
®
Offshore Conversion Kit
5
With the stripper rubber element in-stalled, all return flow is diverted through the side outlet on the wellhead adapter spool. In typical installations, a valve is installed on the adapter spool outlet to allow the flow to be directed through the rigs conventional mud system when the stripper rubber is removed.
Typical Marine Riser Installation
Marine Riser Installation
7
6
The Hydraulic Power Unit (HPU) is an important component of the HOLD®
1500/2500 and the RDH 2500®
Rotat-ing Control Devices (RCD). This unit pumps oil that lubricates and cools the bearing assemblies and delivers the required pressure to the inside of the high pressure seals, enabling them to hold up to 3,000 or 5,000 psi (static test pressure) wellbore pres-sure. The HPU is located away from the drilling floor, requiring a 110V electrical supply and an air supply from the rig.
The operational features of the HOLD High-Pressure HPU are:
Two large 75-gallon oil reservoirs •
Separate high-pressure and low-•
pressure lubrication systems
Built-in air compressor that au-•
tomatically engages if the rig air supply is disrupted
High-pressure lubricant system •
regulated by a mechanical system (electrical wiring not required be-low the rig floor)
Wellbore pressure sensor that sig-•
nals the high-pressure lubricant system to deliver measured pres-sure plus an additional 150 psi, ensuring a positive pressure dif-ferential across the seal face A seven-day chart recorder that •
maintains a continuous wellbore pressure record
A control console located on the •
rig floor that operates the clamp-ing system, and is independent of the High-Pressure HPU
Low Pressure Lubrication
Since the bearing assemblies in all Smith Services rotating heads are sealed, a low-pressure lubricator is a necessary part of the system. The lubricator does not have to be placed on the rig floor and only needs to be hooked to the rig air supply to oper-ate. The system is virtually mainte-nance free, requiring only occasional service from the rig crew to top off the oil in the reservoir.
The lubricators come in two types: Recirculating system for use with •
high-temperature applications Non-recirculating system for use •
in normal conditions and cold temperature applications
RDH 2500 HPU
Hydraulic Power Unit/Lubrication System
HOLD 2500 Hose Reel
HOLD HPU
RDH 2500
®
Rotating Control Device
The RDH 2500 Rotating Control Device (RCD) offers built-in safety features that make this head an excellent choice for underbalanced and managed pressure drilling projects. The stripper element can be easily changed independent of the bearing assembly, saving rig time and eliminating the need for excess inventory on location. This product features a split body de-sign with the bearing assembly at-taching to the mounting spool via a heavy-duty lower clamp.
Features and Benefits
High-pressure oil circulation •
and lubrication system
Real-time wellbore pressure •
sensor and recorder
Stretch-fit stripper element to •
provide an uninterrupted well-bore seal
Large heavy-duty tapered roller •
bearings to provide low-torque rotation and load support Continuous circulation of hy-•
draulic oil to lubricate and cool the bearings and seals
Independent high-pressure •
seal assembly to ensure fail-safe operation
Elastomers that are available •
for oil, gas, high-temperature and water-based drilling fluids Dual stripper element adapter •
to increase drilling personnel rig floor safety
Notes:
Kelly bushings are available for most API kellys •
Stripper elements are available for 2
• 7⁄8", 3 1⁄2", 4 1⁄2", 5"
and 5 1⁄2" drill pipe (other sizes available on request)
Ordering instructions, please specify:
Inlet flange size •
Outlet flange size •
Kelly size and shape •
Drill pipe size •
Drilling fluid type •
Expected circulating temperature •
Expected surface pressure •
Technical Data Specifications
HOLD 1500 HOLD 2500 RDH 2500
Rotating test pressure 1,500 psi 2,500 psi 2,500 psi
Static test pressure 1,500 psi 3,000 psi / 5,000 psi 3,000 psi
Max. rpm 150 rpm 150 rpm 150 rpm
Height 54" 54" 48" - 59"
Max. width 39 5⁄8" 39 5⁄8" 39 5⁄8"
Bearing assy. rotary table pass
through 27 1⁄2" 27 1⁄2" 27 1⁄2"
Rotating stripper element Single or dual Single or dual Single or dual
Stripper element mounting Bolt on Bolt on One-piece or bolt on
Rotary drive Yes Yes Yes
Top drive Yes Yes Yes
Dual stripper element adapter Yes Yes Add 18" - 22"
Max. pass through bearing assembly 13 5⁄8" 12 1⁄4" 9"
Inlet Flange Spool ID Outlet Flange
7 1⁄16" - 5000# 7 1⁄16" 7 1⁄16" - 2000/3000/5000# 7 1⁄16" - 5000# Shorty 7 1⁄16" 7 1⁄16" - 2000/3000/5000# 9" - 3000# 9" 7 1⁄16" - 2000/3000/5000# 11" - 3000/5000# 11 1⁄4" 7 1⁄16" - 2000/3000/5000# 11" - 3000# Shorty 11 1⁄4" 7 1⁄16" - 2000/3000/5000# 13 5⁄8" - 5000# 13 5⁄8" 7 1⁄16" - 2000/3000/5000# Drive bushing Top clamp Bearing assembly Lower clamp Inlet flange Outlet flange Clamp bolts RDH 2500 RCD
9
Model 7068 Rotating Control Device
The Model 7068 Rotating Control Device(RCD) is the low-pressure workhorse of the Smith Services rotating head fleet. It has es-tablished a reputation for dependability and ease of operation. The compact design of this head (the “Shorty” is less than 25 inches tall) makes it ideal for use on small drilling rigs where substructure height is limited.
Features and Benefits
Stretch-fit stripper element to provide an •
uninterrupted wellbore seal
Large heavy-duty tapered roller bearings •
to provide low-torque rotation and load support
Shock cushion in the retrievable drive •
bushing to absorb lateral drillstring im-pact, ensuring dependable bearing per-formance
Available in “Shorty” (only 24 ⅜ inches •
high) version
Elastomers available for oil, gas, high-•
temperature and water-based drilling flu-ids
Notes:
Kelly bushings are available for most •
API kellys
Stripper elements are available for •
2 7⁄8", 3 1⁄2", 4 1⁄2", 5" and 5 1⁄2" drill
pipe (other sizes available upon request)
Stationary casing stripper elements •
are available from 6 5⁄8" to 10 3⁄4" upon
special order
Ordering instructions, please specify:
Inlet flange size •
Outlet flange size •
Kelly size and shape •
Drill pipe size •
Drilling fluid type •
Expected circulating temperature •
Technical Data Specifications
Inlet Flange Spool ID Outlet Flange Height
9" - 3000# 9" 7 1⁄16" - 2000# 31" 11" - 3000/5000# 11 1⁄4" 7 1⁄16" - 2000# 29 7⁄8" 11" - 3000/5000# Shorty 11 1⁄4" 7 1⁄16" - 2000# or 7" threaded 24 3⁄8" 13 5⁄8" - 3000# 14" 7 1⁄16" - 2000# 29 7⁄8" 13 5⁄8" - 3000# Shorty 14" 7 1⁄16" - 2000# or 7" threaded 24 3⁄8" 13 5⁄8" - 5000# 13 5⁄8" 9" - 2000# 31 7⁄8"
Rotating test pressure 250 psi*
Static test pressure 750 psi*
Max. rpm 150 rpm
Height 24 3⁄8" - 38"
Max. width 32 1⁄2"
Stripper element mounting One-piece or bolt on
Rotary drive Yes
Top drive Yes
Dual stripper element adapter Add 18" - 22"
Max. pass through bearing assembly 13 3⁄4"
Clamp bolt Drive bushing Clamp Outlet flange Inlet flange Model 7068 RCD
* Pressure ratings apply only to heads equipped with PolyPak seals
8
DHS 1400 Rotating Control Device
The DHS 1400 Rotating Control Device (RCD) is the Smith Services intermediate-pressure rat-ed drilling head. Its compact design and large 14 inch thru-bore make it the ideal choice when substructure height is limited. The stripper ele-ment can be easily changed independent of the bearing assembly, saving rig time and eliminat-ing the need for excess inventory on location. This product features a split body design with the bearing assembly attaching to the mount-ing spool via a heavy-duty lower clamp.
Features and Benefits
Field replaceable bearing section •
Stretch-fit stripper element that provides •
an uninterrupted wellbore seal
Large heavy-duty tapered roller bearings to •
provide low-torque rotation and load sup-port
Wear bushing for wellhead adapter avail-•
able for use prior to installation of drilling head
Elastomers available for oil, gas, high-tem-•
perature and water-based drilling fluids Sealed bearing assembly retrievable •
through 22 ½ inch rotary table
Notes:
Kelly bushings are available for most API kellys •
Stripper elements are available for 2 ⅞
• ", 3 ½", 4 ½", 5" and 5 ½" drill pipe (other sizes available upon request)
Stationary casing stripper elements are available •
from 6 ⅝" to 10 ¾" upon special order
Ordering instructions, please specify:
Inlet flange size •
Outlet flange size •
Kelly size and shape •
Drill pipe size •
Drilling fluid type •
Expected circulating temperature •
Expected surface pressure •
Technical Data Specifications
Rotating test pressure 600 psi
Static test pressure 1,000 psi
Max. rpm 150 rpm
Height 39 3⁄4" - 50 1⁄4"
Max. width 38"
Bearing assy. rotary table pass through 22 1⁄2"
Stripper element mounting One-piece or bolt on
Rotary drive Yes
Top drive Yes
Max. pass through bearing assembly 14"
Inlet Flange Spool ID Outlet Flange
7 1⁄16" - 3000# 7 1⁄16" 7 1⁄16" - 2000/3000# 7 1⁄16" - 3000# Shorty 7 1⁄16" 7 1⁄16" - 2000/3000# 9" - 2000/3000# 9" 7 1⁄16" - 2000/3000# 11" - 3000/5000# 11 1⁄4" 7 1⁄16" - 2000/3000# 11" - 3000/5000# Shorty 11 1⁄4" 7 1⁄16" - 2000/3000# 13 5⁄8" - 5000# 13 5⁄8" 7 1⁄16" - 2000/3000# 13 5⁄8" - 5000# Shorty 13 5⁄8" 7 1⁄16" - 2000/3000# Test plug Upper clamp Clamp bolt Bearing assembly Outlet flange Inlet flange Lower clamp DHS 1400 RCD
10
Model 8068 Rotating Control Device
The Model 8068 Rotating Control Device (RCD) is designed for use on large diameter wells. This prod-uct features a split body design with the bearing assembly attached to the mounting spool via clamping dogs. The mounting spool is avail-able for 13 ⅝
inch
to 20inch
BOP bolt-on spools and 30inch
and 36inch
weld-on mounting flanges for conductor pipe.The bearing assembly uses the same reliable bearing and seal as-sembly as the Model 7068 RCD, en-suring consistent performance.
Features and Benefits
Stretch-fit stripper element to •
provide an uninterrupted well-bore seal
Large heavy-duty tapered roller •
bearings to provide low-torque rotation and load support Shock cushion in the retrievable •
drive bushing to absorb lateral drillstring impact, ensuring de-pendable bearing performance Elastomers available for oil, •
gas, high-temperature and wa-ter-based drilling fluids
Dual element adapter to in-•
crease drilling personnel safety
Notes:
Kelly bushings are available for most API •
kellys
Stripper elements are available for 2⅞ • ", 3½",
4½", 5" and 5½" drill pipe (other sizes avail-able upon request)
Stationary casing stripper elements are avail-•
able from 6 ⅝" to 10 ¾" upon special order
Spool Technical Data Flange Technical Data
Note: Customer welds mounting flange directly to conductor pipe
Specifications
*Pressure ratings apply only to heads equipped with PolyPak seals
Clamping dog Seal Outlet flange Inlet flange Mounting Spool
Ordering instructions, please specify:
Inlet flange size •
Outlet flange size •
Kelly size and shape •
Drill pipe size •
Drilling fluid type •
Expected circulating temperature •
Rotating test pressure 250 psi*
Static test pressure 750 psi*
Max. rpm 150 rpm
Height (bearing assembly only) 17"
Max. width 32 1⁄2"
Stripper element mounting One-piece or bolt on
Rotary drive Yes
Top drive Yes
Max. pass through bearing assembly 13 3⁄4"
Inlet Flange Height Spool ID Outlet Flange
16" - 2000# 20" 16 3⁄4" 9" - 3000#
20" - 2000/3000# 20" 20 3⁄4" 9" - 3000#
Casing Size Height Flange ID
20" mounting flange 6" 26 9⁄32"
30"/36" mounting flange 3" 26 9⁄32"
30" mounting flange with
removable adapter ring 3 1⁄4" 28 3⁄4"
Seal Clamping
dog
Weld-on Mounting Adapter
Drive ring Clamp Bearing assembly Model 8068 RCD
11
Model 7368 Rotating Control Device
The Model 7368 Rotating Control Device (RCD) is designed for use where space is limited, such as on workover rigs. The Model 7368 head employs the same design features as the larger Model 7068 low-pressure RCD.Features and Benefits
Stretch-fit stripper element that provides an •
uninterrupted wellbore seal
Large heavy-duty tapered roller bearings to •
provide low-torque rotation and load support One-piece combination drive bushing stripper •
element that passes through a 10 ½
inch
rotary tableElastomers available for oil, gas, high-tempera-•
ture and water-based drilling fluids
Notes:
Kelly bushings are available in 3" square and 3
• 1⁄2" hex
Stripper elements are available for 2
• 3⁄8", 2 7⁄8" and 3 1⁄2" drill pipe
Ordering instructions, please specify:
Inlet flange size •
Outlet flange size •
Kelly size and shape •
Drill pipe size •
Drilling fluid type •
Expected circulating temperature •
Rotating test pressure 250 psi*
Static test pressure 750 psi*
Max. rpm 150 rpm
Height 23 7⁄8"
Max. width 24 1⁄2"
Stripper element mounting One-piece
Rotary drive Yes
Top drive Yes
Max. pass through bearing assembly 7 1⁄16"
Technical Data Specifications
Inlet Flange Spool ID Outlet Flange
7 1⁄16" - 2000/3000/5000# 7 1⁄16" 4 1⁄16" - 2000/3000# 7 1⁄16" - 2000/3000/5000# 7 1⁄16" 7 1⁄16" - 2000# Clamp Outlet flange Inlet flange Clamp bolt Bowl One-piece combination drive bushing stripper element Model 7368 RCD
12
Model 8068-G Rotating Control Device
The 8068-G Geothermal Rotating Control Device (RCD) has been de-signed with several unique features that enable it to operate safely in a high temperature environment. It utilizes the Model 8068 RCD bearing and drive bushing section, ensuring proven reliability and performance. The geothermal head utilizes a split body design with the bearing sec-tion securely fastened to the spool and sealed for safe operation. The spool is equipped with a large diam-eter rubber element, designed with an ID large enough to safely seal on large diameter drillstring com-ponents such as drill collars. Spe-cial water injection ports enable the stripper elements and exposed seal faces to be cooled and lubricated by circulating water through the head when stripping in and out of the well.
Features and Benefits
Stretch-fit stripper element to •
provide an uninterrupted well-bore seal
Large heavy-duty tapered roller •
bearings to provide low-torque rotation and load support
All rubber components that have •
been specially formulated for high temperature service Dual stripper element design •
Upper element that rotates with •
the kelly sealing around drill pipe, tool joints and the kelly Upper stripper element that •
can be changed without re-moving the bearing
Lower stationary element that •
seals around large diameter drillstring components such as drill collars
Spool equipped with a port for •
bleeding off pressure between the upper element and the closed BOP
Drive bushing and stripper el-•
ement retrievable through a 17 ½
inch
rotary tableBearing assembly retrievable •
through a 27 ½
inch
rotary tableShock cushion in the retriev-•
able drive bushing that absorbs lateral drillstring impact ensur-ing dependable bearensur-ing perfor-mance
Available with either 14
•
inch
or15 ¼
inch
thru-boreNotes:
Kelly bushings are available for most API •
kellys
Stripper elements are available for 2 ⅞ • ",
3 ½", 4 ½", 5" and 5 ½" drill pipe (other sizes available upon request)
Stationary casing stripper elements •
are available from 6 ⅝" to 10 ¾" upon special order
Ordering instructions, please specify:
Inlet flange size •
Outlet flange size •
Kelly size and shape •
Drill pipe size •
Drilling fluid type •
Expected circulating temperature •
Technical Data Specifications
Static test pressure 750 psi*
Max. rpm 150 rpm
Height 57" - 65"
Max. width 37 1⁄2"
Bearing assy. rotary table pass
through 27 1⁄2"
Stripper rubber mounting One-piece or bolt on
Rotary drive Yes
Top drive Yes
Max. pass through bearing assembly 13 3⁄4"
Inlet Flange Spool ID Outlet Flange
13 5⁄8" - 3000# 14" 9"- 2000/3000# 16" - 2000# 16 3⁄4" 9"- 2000/3000# 20" - 2000/3000# 20 3⁄4" 9"- 2000/3000# Inlet flange Spool Clamping dog Bearing assembly Clamp Outlet flange Model 8068-G RCD
* Pressure ratings apply only to heads equipped with PolyPak seals
13
Rotating Control Device Accessories
Stripper Elements
All Smith Services stripper elements are manufactured to strict mate-rial specifications and a proprietary compound formulation. Every batch of rubber is subject to multiple QA tests and verification prior to ing. The stripper elements are mold-ed under conditions of controllmold-ed and documented load weight, tem-perature, cavity pressure and cure time. Once elements are molded, documentation for the entire batch of stripper elements is reviewed by an independent rubber lab, complet-ing the QA process. Smith Services builds quality and reliability into each stripper element so that "when you are under pressure you are
in control.”
Stripper elements are passive seals that maintain a constant barrier between the atmosphere and well-bore. The inner diameter of stripper rubbers should always be smaller than the objects (e.g. drill pipe, tool joints) passing through to ensure sealing with zero wellbore pressure. The outer geometry of the passive
seal creates higher sealing pressure as wellbore pressure increases.
Low-pressure One-piece Combo Stripper Element
Combination drive bushing and •
stripper element
Reduced replacement time and •
elimination of cap screws
Available in natural rubber, nitrile, •
butyl or polyurethane
Will fit Models 7068, 8068 and •
DHS 1400 RCDs
High-pressure One-piece Combo Stripper Element
Combination drive bushing and •
stripper element
Reduced replacement time and •
elimination of cap screws
Available in natural rubber, nitrile •
or butyl
Will fit the RDH
• ® 2500 RCD
Standard Stripper Element
Secured to drive bushing with •
cap screws and locking wire Available in natural rubber, •
nitrile, butyl or polyurethane
Strips tools up to 8 ¾
•
inch OD
Available for use on Models 7068, •
8068 and DHS 1400 RCDs
Model 7368 One-piece Combo Stripper Element
Combination drive bushing and •
stripper element
Reduced replacement time and •
elimination of cap screws
Available in natural rubber, •
nitrile, butyl or polyurethane
Heavy-duty Stripper Element
Secured to drive bushing with •
cap screws and locking wire Available in natural rubber, nitrile •
or high temperature compounds Strips tools up to 8 ¾
•
inch OD
Available for use on Models 7068, •
8068 and DHS 1400 RCDs
Accessories
Dual element adapter for HOLD • 1500, HOLD 2500 and RDH 2500 Stabbing mandrels • Snubbing adapter • Logging adapter • Low-pressure one-piece combo stripper element
High-pressure one-piece combo stripper element
Standard stripper element Heavy-duty stripper element
Note: Contact a Smith Services representative to assist with stripper element selection.
Model 7368 one-piece stripper element
