Float Collars and Float Shoes for Primary Casing Cementing

Description

Goldenman manufactures Float Collars and Float Shoes for primary casing cementing in vertical, deviated, horizontal, HPHT and sour-service wells.

The complete product range includes:

• Conventional Float Collars
• Conventional Float Shoes
• Single-Valve Float Equipment
• Double-Valve Float Equipment
• Non-Rotating Float Collars
• Non-Rotating Float Shoes
• Auto-Fill Float Collars
• Auto-Fill Float Shoes
• Stab-In Float Collars
• Stab-In Float Shoes
• Differential-Fill Float Equipment
• High-Temperature and High-Pressure Float Equipment
• Side-Port, Down-Jet and Up-Jet Float Shoes
• Cement-Nose, Composite-Nose and Aluminum-Nose Float Shoes
• API casing threads and premium connections
• PDC-drillable internal components

Standard casing sizes range from 4-1/2 to 20 inches, with project configurations for larger conductor and surface casing strings.

The Float Shoe guides the casing through the wellbore and provides the primary one-way valve at the bottom of the string. The Float Collar is installed above the shoe and provides a secondary backflow barrier and a landing seat for cementing wiper plugs.

Product Short Description

Goldenman Float Collars and Float Shoes use spring-loaded check valves to permit forward circulation while preventing cement slurry and wellbore fluid from flowing back into the casing after displacement.

Standard configurations are rated to 35 MPa / 5,000 psi reverse differential pressure. HPHT configurations are supplied for reverse pressures up to 10,000 psi / 68.9 MPa and temperatures up to 400°F / 204°C.

Available valve systems include single-valve, double-valve, flapper, plunger, auto-fill and stab-in designs. Internal valve components, cement retainers and landing profiles are manufactured from aluminum, phenolic, composite and elastomeric materials for efficient PDC drill-out.

Product Highlights

• Performance-tested cementing float equipment
• Float Collar and Float Shoe integrated series
• Casing sizes from 4-1/2 to 20 in
• Standard reverse-pressure capacity of 35 MPa
• HPHT configurations up to 10,000 psi
• Operating temperatures up to 400°F / 204°C
• Single- and double-valve options
• Conventional spring-loaded check valves
• Non-rotating plug landing profiles
• Auto-fill and differential-fill systems
• Stab-in inner-string cementing equipment
• Full-bore and large-flow-area configurations
• PDC-drillable internal components
• Aluminum, phenolic and composite valve materials
• High-temperature elastomeric seals
• API BTC, LTC and STC casing connections
• Premium and customer-specified connections
• J55, K55, N80, L80, T95 and P110 body grades
• Standard and sour-service configurations
• Side-port, down-jet and up-jet Float Shoes
• Cement, composite and aluminum guide noses
• Plug bump-pressure resistance
• Abrasive-slurry flow endurance
• Reverse-flow and back-pressure testing
• Full material and component traceability
• Individual valve function testing
• Export packaging with connection protectors

General Technical Specifications

Parameter	Available Configuration
Products	Float Collar and Float Shoe
Product category	Cementing Float Equipment
Performance standard	API Spec 10F
Casing size range	4-1/2–20 in
Extended sizes	Project-specific conductor and surface casing sizes
Valve quantity	Single valve or double valve
Valve types	Plunger, poppet, flapper and ball-activated
Operating modes	Conventional, auto-fill, differential-fill and stab-in
Standard back-pressure rating	35 MPa / approximately 5,000 psi
HPHT back-pressure rating	Up to 68.9 MPa / 10,000 psi
Standard temperature	Up to 300°F / 149°C
HPHT temperature	Up to 400°F / 204°C
Body construction	Seamless casing-grade steel
Body grades	J55, K55, N80, L80, T95 and P110
Connections	STC, LTC, BTC and premium threads
Internal materials	Aluminum, phenolic, composite and elastomer
Drillability	PDC-drillable configurations
Shoe noses	Cement, composite and aluminum
Cement ports	Side ports, down jets and up jets
Service	Conventional, HPHT, sour and abrasive cementing
Testing	Flow endurance, reverse flow, back pressure and temperature
Supply	Individual equipment or complete cementing package

Goldenman Standard Float Collar Dimensions

Casing Size	Maximum Body OD	Overall Length	Main Internal Diameter	Minimum Flow Diameter	Connection	Back-Pressure Rating
5 in	141.3 mm	500 mm	110 mm	50 mm	5 in BTC	35 MPa
5-1/2 in	153.67 mm	530 mm	112 mm	55 mm	5-1/2 in BTC	35 MPa
7 in	194.46 mm	586 mm	162.5 mm	77 mm	7 in BTC	35 MPa
9-5/8 in	270 mm	720 mm	225 mm	77 mm	9-5/8 in BTC	35 MPa
13-3/8 in	365 mm	720 mm	319 mm	77 mm	13-3/8 in BTC	35 MPa
20 in	533.4 mm	720 mm	475 mm	77 mm	20 in BTC	35 MPa

The maximum body OD follows the coupling envelope of the matching casing connection.

Goldenman Standard Float Shoe Dimensions

Casing Size	Maximum Body OD	Overall Length	Main Internal Diameter	Minimum Flow Diameter	Connection	Back-Pressure Rating
5 in	140.3 mm	495 mm	110 mm	50 mm	5 in BTC	35 MPa
5-1/2 in	153.67 mm	514 mm	122 mm	55 mm	5-1/2 in BTC	35 MPa
7 in	194.46 mm	533 mm	162.5 mm	77 mm	7 in BTC	35 MPa
9-5/8 in	269.88 mm	550 mm	225 mm	77 mm	9-5/8 in BTC	35 MPa

Additional Float Shoe configurations are supplied for:

• 4-1/2 in
• 6-5/8 in
• 7-5/8 in
• 8-5/8 in
• 10-3/4 in
• 11-3/4 in
• 13-3/8 in
• 16 in
• 18-5/8 in
• 20 in

Float Collar

The Float Collar is installed one or more casing joints above the Float Shoe.

Its main functions are:

• Providing a secondary one-way valve
• Preventing cement slurry backflow
• Providing a landing seat for the bottom cementing plug
• Providing a landing seat for the top cementing plug
• Creating a defined shoe-track length
• Supporting plug bump pressure
• Retaining cement within the shoe track
• Providing redundancy if the Float Shoe valve is damaged
• Supporting pressure testing after cement displacement

The distance between the Float Collar and Float Shoe forms the shoe track.

A typical shoe track contains one to three casing joints depending on the casing program, cement volume, well trajectory and operational procedure.

Float Shoe

The Float Shoe is installed at the bottom of the casing string.

It combines:

• A guide nose
• A pressure-containing steel body
• One or two check valves
• Cement-retained internal components
• Flow ports
• A casing connection

The guide nose assists the casing in passing:

• Ledges
• Doglegs
• Washouts
• Formation transitions
• Deviated intervals
• Horizontal build sections
• Open-hole restrictions

During cementing, slurry flows through the check valve and exits through the shoe ports into the annulus.

When pumping stops, the valve closes and prevents reverse flow into the casing.

Float Collar vs Float Shoe

Feature	Float Collar	Float Shoe
Installation position	Above the Float Shoe	Bottom of casing string
Main function	Secondary backflow barrier and plug landing seat	Primary backflow barrier and casing guide
Guide nose	No	Yes
Cement outlet ports	Normally no external ports	Side, down-jet or up-jet ports
Plug landing profile	Primary function	Not normally used for top-plug landing
Shoe-track function	Upper boundary	Lower boundary
Drill-out requirement	Yes	Yes
Valve quantity	Single or double	Single or double
Common configuration	Conventional or non-rotating	Conventional, auto-fill or guided

Float Equipment Operating Sequence

Running the Casing

The Float Shoe guides the casing through the open hole.

In a conventional valve configuration, the casing is filled from the surface because the check valves prevent formation fluid from entering through the shoe.

In an auto-fill configuration, wellbore fluid enters through the Float Shoe and Float Collar while the casing is run, reducing surge pressure.

Establishing Circulation

Surface pumps apply pressure to open the spring-loaded valves.

Drilling fluid flows through:

1. The casing string
2. The Float Collar
3. The Float Shoe
4. The shoe ports
5. The casing-to-hole annulus

Pumping the Cement Slurry

The bottom plug separates the cement slurry from the drilling fluid ahead of it.

When the bottom plug lands on the Float Collar, increasing pressure ruptures its diaphragm and opens the flow path.

Cement then passes through the plug, Float Collar, Float Shoe and into the annulus.

Displacing the Cement

The top plug separates the cement slurry from the displacement fluid.

The top plug lands on the bottom plug or landing profile at the Float Collar.

A pressure increase indicates plug bump and confirms that the designed displacement volume has entered the casing.

Preventing Backflow

When pumping stops, the spring-loaded check valves close.

The Float Shoe and Float Collar prevent hydrostatic imbalance from forcing cement slurry back into the casing.

Single-Valve Float Equipment

Single-Valve Float Collars and Float Shoes use one spring-loaded check valve.

The single-valve design provides:

• Simple internal construction
• Large flow area
• Lower circulation pressure
• Reduced drill-out volume
• Fewer internal components
• Efficient manufacturing and maintenance
• Reliable backflow prevention

Single-valve equipment is used in:

• Conventional vertical wells
• Moderate-depth casing strings
• Standard-pressure cementing
• Wells with controlled cementing hydraulics
• Applications prioritizing maximum flow area

Double-Valve Float Equipment

Double-Valve Float Equipment contains two independent check valves in one housing.

The double-valve configuration provides:

• Redundant backflow protection
• Increased operational security
• Improved resistance to valve damage
• Protection against debris contamination
• Improved reliability in high-pressure wells
• Additional protection during long circulation periods
• Increased security after cement displacement

Double-valve equipment is used in:

• Deep wells
• HPHT wells
• Horizontal wells
• Critical production casing
• High-density cement systems
• Long-duration circulation
• Abrasive slurry service
• Wells with high reverse differential pressure

Conventional Float Collar and Shoe

Conventional float equipment uses spring-loaded check valves that remain closed while the casing is run.

Fluid circulation begins when pump pressure overcomes:

• Valve spring force
• Hydrostatic differential
• Flow resistance through the valve
• Internal port pressure loss

Conventional float equipment provides immediate backflow protection throughout the running and cementing operation.

It is used where:

• Formation fracture pressure provides sufficient margin
• Casing fill can be controlled from the surface
• Surge pressure remains within the well design
• A simple and continuously active check valve is preferred

Non-Rotating Float Collar

The Non-Rotating Float Collar incorporates an anti-rotation profile that engages the matching cementing plug.

After plug bump, the plug is mechanically restrained from rotating during drill-out.

The non-rotating design provides:

• Faster plug drill-out
• Reduced plug spinning
• Improved PDC-bit engagement
• Lower drill-out torque
• Reduced time on bottom
• Lower risk of damage to casing ID
• More predictable removal of the plug and valve system

Anti-rotation features include:

• Locking teeth
• Interlocking profiles
• Ribs and grooves
• Castellation profiles
• Key-and-slot systems

The plug and landing profile are supplied as a matched system.

Non-Rotating Float Shoe

The Non-Rotating Float Shoe uses drillable locking features within the valve and guide assembly.

It supports efficient drill-out of:

• Cement
• Valve cages
• Valve seats
• Guide components
• Internal retainers

Non-rotating Float Shoes are used with matching Float Collars and non-rotating wiper plugs.

Auto-Fill Float Collar and Shoe

Auto-Fill Float Equipment permits wellbore fluid to enter the casing while it is being run.

This reduces the pressure difference between the casing interior and the annulus.

The system provides:

• Reduced surge pressure
• Reduced lost-circulation risk
• Faster casing running
• Lower formation loading
• Improved well-control balance
• Reduced requirement for surface filling
• Improved performance in close-clearance annuli

After reaching the required depth, the equipment converts to conventional one-way float operation.

Conversion methods include:

• Dropping a conversion ball
• Applying a defined circulation rate
• Applying differential pressure
• Shearing a retaining sleeve
• Releasing a fill tube
• Pumping a conversion plug

After conversion, reverse flow is blocked by the activated check valves.

Differential-Fill Float Equipment

Differential-Fill Float Equipment permits controlled inflow into the casing while restricting the maximum differential pressure.

It balances:

• Casing filling
• Surge-pressure reduction
• Well-control requirements
• Formation-fracture limitations
• Running speed

The valve opening area and differential-pressure setting are selected from the casing size, running speed, annular clearance, drilling-fluid density and formation strength.

Stab-In Float Collar and Shoe

Stab-In Float Equipment is designed for inner-string cementing of large-diameter casing.

A drill pipe or tubing string carries a stinger that engages the receptacle inside the Float Collar or Float Shoe.

Cement is pumped through the smaller inner string instead of filling the complete casing volume.

The stab-in system provides:

• Reduced cement-displacement volume
• Reduced displacement time
• Improved slurry-volume accuracy
• Reduced cement contamination
• Reduced plug and cement drill-out
• Lower surface pumping volume
• Improved offshore conductor cementing
• Efficient cementing of large casing strings

The system includes:

• Stab-In Float Collar or Float Shoe
• Tapered stinger receptacle
• Drill Pipe Stinger
• Seal assembly
• Landing and alignment profile
• Single- or double-valve system
• Inner-string cementing head

Stab-In Cementing Sequence

1. Run the casing with the Stab-In Float Shoe or Collar.
2. Run the drill pipe with the stinger.
3. Lower the stinger into the tapered receptacle.
4. Apply the specified set-down weight.
5. Pressure-test the stinger seal.
6. Circulate through the drill pipe and Float Shoe.
7. Pump cement through the inner string.
8. Displace the cement to the designed volume.
9. Stop pumping and verify backflow control.
10. Release and retrieve the stinger.
11. Complete the casing cementing operation.

Float Shoe Nose Types

Cement Nose

The Cement Nose uses a rounded cement guide profile.

It provides:

• High compressive strength
• Economical construction
• Smooth wellbore guidance
• Full drillability
• Compatibility with conventional casing-running operations

Composite Nose

The Composite Nose uses high-strength nonmetallic material.

It provides:

• Reduced drill-out time
• Lower bit wear
• Improved impact resistance
• Controlled fracture during drill-out
• Lower total shoe weight

Aluminum Nose

The Aluminum Nose provides:

• High structural strength
• Improved impact resistance
• Accurate port machining
• PDC drillability
• High-temperature capability
• Stable shape during casing running

Eccentric Nose

An Eccentric Nose helps pass ledges and restrictions by directing the shoe around the obstruction.

It is used in:

• Deviated wells
• Horizontal wells
• Irregular open holes
• Wells with known ledges
• Casing strings requiring directional guidance

Tapered Cut-Lip Nose

The cut-lip design provides:

• Improved ledge engagement
• Increased bypass area
• Reduced tendency to hang up
• Better passage through irregular wellbores
• Controlled orientation in high-angle sections

Float Shoe Port Configurations

Side-Port Float Shoe

Side ports direct cement radially into the annulus.

They provide:

• Balanced discharge
• Reduced direct formation impact
• Even cement distribution
• Protection when the shoe nose reaches bottom

Down-Jet Float Shoe

Down-Jet ports direct fluid downward and outward.

They provide:

• Improved cleaning below the shoe
• Removal of settled cuttings
• Increased bottomhole agitation
• Assistance in working the casing toward target depth

Up-Jet Float Shoe

Up-Jet ports direct fluid upward into the annulus.

They provide:

• Reduced formation erosion below the shoe
• Improved upward cement placement
• Reduced downward jetting into weak formations
• Enhanced annular displacement

Valve Types

Plunger Valve

The spring-loaded plunger moves axially between the open and closed positions.

It provides:

• Positive central sealing
• Controlled opening pressure
• High reverse-pressure capability
• Strong resistance to pressure cycling
• Simple drillable construction

Poppet Valve

A poppet valve uses a guided sealing head and seat.

It provides:

• Stable alignment
• Controlled flow opening
• Reliable reverse shutoff
• High-pressure capability
• Broad temperature compatibility

Flapper Valve

A Flapper Valve rotates away from the flow path during forward circulation.

It provides:

• Large flow area
• Low circulation pressure
• Passage of large lost-circulation materials
• Reduced plugging risk
• Strong backflow shutoff

Flapper equipment is used in cementing programs containing high concentrations of solids or lost-circulation material.

Large-Flow-Area Design

A large valve flow area reduces:

• Circulation pressure
• Cement slurry shear
• Erosion velocity
• Equivalent circulating density
• Pumping pressure
• Risk of plugging

It improves:

• Solids tolerance
• Lost-circulation-material passage
• Cement mixing stability
• High-rate circulation
• Long-duration flow performance

The minimum internal flow area is selected to match the casing size, expected circulation rate, slurry rheology and solids content.

Drillable Internal Components

Goldenman Float Equipment uses drillable internal materials including:

• Aluminum
• Phenolic resin
• Composite polymer
• Engineering plastic
• Elastomer
• Drillable cement
• Nonferrous retaining components

PDC-drillable construction reduces:

• Drill-out time
• Bit damage
• Torque fluctuation
• Metal debris
• Casing damage
• Time required to resume drilling

The steel pressure-containing housing remains part of the casing string after drill-out.

Body Materials

The external housing is manufactured from seamless casing-grade steel.

Available grades include:

• J55
• K55
• N80
• L80
• T95
• P110
• Customer-specified casing grade

The body grade is matched to:

• Casing grade
• Casing nominal weight
• Connection type
• Tensile-load requirement
• Collapse requirement
• Internal-pressure requirement
• Operating temperature
• Sour-service condition

Casing Connections

Available casing connections include:

• STC
• LTC
• BTC
• Premium gas-tight connection
• Semi-premium connection
• Customer-specified thread

The Float Collar normally has a box connection at the top and a pin connection at the bottom.

The Float Shoe normally has a box connection at the top and a closed guide nose at the bottom.

Thread dimensions, taper, lead, thread height and gauging match the specified casing connection.

Standard-Service Configuration

Standard-service equipment is used with:

• Water-based drilling fluid
• Oil-based drilling fluid
• Synthetic-based drilling fluid
• Conventional cement slurry
• Spacer and wash fluids
• Standard-temperature wells

The valve elastomer, spring, seat and drillable materials are selected for the cementing-fluid system and operating temperature.

Sour-Service Configuration

Sour-service equipment is supplied for H₂S-containing wells.

The configuration includes:

• Controlled-hardness steel housing
• Sour-service body grade
• H₂S-compatible elastomer
• Corrosion-resistant spring material
• Compatible valve-seat material
• Full heat traceability
• Hardness inspection
• Material certification

HPHT Float Equipment

HPHT Float Collars and Float Shoes are used in high-pressure, high-temperature cementing programs.

The HPHT configuration includes:

• Reverse-pressure capability up to 10,000 psi
• Temperature capability up to 400°F / 204°C
• High-temperature valve seals
• High-strength valve cages
• Heat-resistant composite materials
• Extended abrasive-flow endurance
• Double-valve redundancy
• High-strength body material
• Full temperature and pressure test records

Applications include:

• Deep gas wells
• HPHT exploration wells
• High-density cement systems
• Long cement columns
• High reverse hydrostatic differential
• Extended circulation before cementing

API Spec 10F Performance Testing

API Spec 10F defines testing and marking requirements for cementing Float Equipment.

The performance-test program covers:

• Forward-flow durability
• Reverse-flow performance
• Back-pressure resistance
• High-temperature exposure
• Pressure and temperature measurement
• Flow-rate measurement
• Test-fluid preparation
• Data recording
• Product marking

The ordered test designation defines the required:

• Flow-duration category
• Temperature category
• Back-pressure category
• Test orientation
• Valve configuration
• Equipment size

Performance qualification is linked to the tested valve system and design family rather than the steel housing alone.

Reverse-Flow Test

The reverse-flow test verifies that the valve closes when fluid attempts to flow from the annulus back into the casing.

The test evaluates:

• Valve response
• Seal contact
• Reverse leakage
• Debris tolerance
• Valve closing reliability
• Leakage volume

Back-Pressure Test

The back-pressure test verifies that the closed valve withstands the specified reverse differential pressure.

Standard Goldenman models are rated to:

35 MPa / approximately 5,000 psi

HPHT models are supplied with ratings up to:

68.9 MPa / 10,000 psi

Flow-Durability Test

The flow-durability test circulates abrasive test fluid through the Float Equipment for the specified duration and flow rate.

The test evaluates:

• Valve erosion
• Seat wear
• Flow-path integrity
• Spring performance
• Internal-component stability
• Post-circulation backflow sealing

High-Temperature Test

The static high-temperature test exposes the valve system to the specified temperature before pressure testing.

It evaluates:

• Elastomer stability
• Spring properties
• Valve-seat deformation
• Composite-material stability
• Sealing recovery
• Back-pressure performance after heating

Cementing Applications

Goldenman Float Collars and Float Shoes are used in:

• Surface casing cementing
• Intermediate casing cementing
• Production casing cementing
• Liner cementing
• Conductor casing cementing
• Vertical wells
• Deviated wells
• Horizontal wells
• Extended-reach wells
• HPHT wells
• Sour-gas wells
• Offshore wells
• Deepwater wells
• Geothermal wells
• Thermal-recovery wells
• Lost-circulation formations
• Weak and pressure-sensitive formations

Product Selection

The Float Equipment configuration is selected from:

• Casing size
• Casing nominal weight
• Casing grade
• Connection type
• Well depth
• Well inclination
• Horizontal interval
• Hole size
• Annular clearance
• Drilling-fluid density
• Cement-slurry density
• Circulation rate
• Cementing pressure
• Reverse differential pressure
• Bottomhole circulating temperature
• Bottomhole static temperature
• Lost-circulation risk
• H₂S concentration
• Cementing-plug system
• Drill-out requirements

Installation

Float Shoe Installation

1. Verify casing size, grade and connection.
2. Inspect the Float Shoe body and guide nose.
3. Check the valve for free operation.
4. Clean the casing and shoe threads.
5. Apply the approved thread compound.
6. Make up the Float Shoe to the casing.
7. Apply the specified connection torque.
8. Verify alignment and external condition.
9. Function-test the valve.
10. Begin casing-running operations.

Float Collar Installation

1. Determine the required shoe-track length.
2. Install the selected casing joints above the Float Shoe.
3. Inspect the Float Collar and valve.
4. Confirm plug compatibility.
5. Clean and lubricate the connections.
6. Make up the Float Collar in the correct orientation.
7. Apply the specified torque.
8. Confirm the anti-rotation profile where used.
9. Pressure- and function-test the assembled shoe track.
10. Continue running the casing string.

Common Failure Modes

Cement Backflow

Causes include:

• Valve-seat damage
• Debris under the valve
• Eroded sealing surfaces
• Incorrect valve material
• Insufficient valve closing force
• Excessive reverse differential pressure

Excessive Circulation Pressure

Causes include:

• Undersized valve flow area
• Blocked ports
• High slurry viscosity
• Lost-circulation material accumulation
• Debris around the valve cage
• Incorrect equipment size

Auto-Fill Conversion Failure

Causes include:

• Incorrect conversion-ball size
• Insufficient conversion pressure
• Debris in the conversion mechanism
• Incorrect running procedure
• Damaged release sleeve
• Inadequate flow rate

Plug Fails to Land

Causes include:

• Mismatched plug and Float Collar
• Damaged landing profile
• Debris accumulation
• Incorrect plug size
• Deformed internal components
• Restricted casing ID

Plug Spins During Drill-Out

Causes include:

• Conventional landing profile
• Damaged anti-rotation teeth
• Mismatched plug system
• Excessive drill-out weight
• Incorrect bit selection

Float Shoe Becomes Plugged

Causes include:

• Formation debris
• Cement setting in the ports
• Lost-circulation material
• Insufficient flushing
• Small flow area
• Extended static time after circulation

Manufacturing Process

Goldenman Float Equipment manufacturing includes:

1. Casing-grade material verification
2. Heat-number assignment
3. Body cutting
4. CNC body machining
5. Casing-thread machining
6. Thread-gauge inspection
7. Valve-body production
8. Spring and seal verification
9. Drillable-component molding and machining
10. Cement-retainer preparation
11. Valve assembly
12. Guide-nose production
13. Internal cementing
14. Dimensional inspection
15. Valve function testing
16. Reverse-flow testing
17. Back-pressure testing
18. Flow-area inspection
19. Surface coating
20. Permanent marking
21. Thread-protector installation
22. Final documentation review
23. Export packaging

Quality Control

Quality control includes:

• Body material verification
• Heat-number traceability
• Chemical-composition review
• Mechanical-property verification
• Body OD inspection
• Body ID inspection
• Overall-length inspection
• Connection inspection
• Thread gauging
• Valve-component inspection
• Spring-force inspection
• Elastomer inspection
• Flow-area inspection
• Valve opening-pressure test
• Valve closing test
• Reverse-flow test
• Back-pressure test
• Temperature test
• Cement-retainer inspection
• Plug-landing-profile inspection
• Guide-nose inspection
• Final visual inspection

Product Marking

Each Float Collar and Float Shoe is identified with:

• Goldenman identification
• Product type
• Casing size
• Casing grade
• Casing weight range
• Connection type
• Valve quantity
• Float-equipment design
• Back-pressure rating
• Temperature rating
• Test designation
• Heat number
• Product serial or batch number
• Manufacturing date

Product Documentation

The documentation package includes:

• Certificate of Conformity
• Product datasheet
• General assembly drawing
• Casing-connection drawing
• Valve-system drawing
• Material certificate
• EN 10204 3.1 certificate
• Thread-gauge inspection report
• Dimensional inspection report
• Valve function-test report
• Reverse-flow test report
• Back-pressure test report
• Temperature test report
• Flow-durability test report
• Material traceability record
• Plug compatibility list
• Installation instructions
• Drill-out instructions
• Packing list
• Third-party inspection report

Frequently Asked Questions

What is a Float Collar?

A Float Collar is a casing accessory containing one or more check valves. It prevents cement backflow and provides a landing point for cementing plugs.

What is a Float Shoe?

A Float Shoe is installed at the bottom of the casing string. It combines a guide nose, cement ports and a one-way valve.

Is “Floating Collar” the correct product name?

The standard oilfield term is Float Collar.

“Floating Collar” is not the principal technical or SEO product name.

What sizes are available?

Goldenman supplies Float Collars and Float Shoes from 4-1/2 to 20 inches, with project-specific larger sizes.

Which sizes are listed in the standard Goldenman table?

The listed Float Collar sizes are:

• 5 in
• 5-1/2 in
• 7 in
• 9-5/8 in
• 13-3/8 in
• 20 in

The listed Float Shoe sizes are:

• 5 in
• 5-1/2 in
• 7 in
• 9-5/8 in

What is the standard back-pressure rating?

The standard listed models provide 35 MPa reverse-pressure capacity.

Are 10,000 psi Float Collars available?

Yes.

HPHT Float Equipment is supplied with reverse-pressure ratings up to 10,000 psi and temperature ratings up to 400°F / 204°C.

What is the difference between single- and double-valve equipment?

Single-valve equipment provides a simpler structure and larger flow area.

Double-valve equipment provides two independent backflow barriers for critical cementing operations.

What is a Non-Rotating Float Collar?

It contains a locking profile that prevents the cementing plug from spinning during drill-out.

What is an Auto-Fill Float Collar?

It allows wellbore fluid to enter the casing while the string is run, reducing surge pressure. The valve converts to one-way operation before cementing.

What is Stab-In Float Equipment?

Stab-In Float Equipment allows large casing strings to be cemented through drill pipe or tubing using an inner-string stinger.

Are Float Collar and Float Shoe valves drillable?

Yes.

Goldenman supplies PDC-drillable aluminum, phenolic and composite internal components.

Which casing connections are available?

Available connections include:

• STC
• LTC
• BTC
• Premium connections
• Customer-specified threads

Are sour-service models available?

Yes.

Sour-service configurations use controlled-hardness steel housings and H₂S-compatible valve materials.

Can the body grade match the casing grade?

Yes.

Float Equipment bodies are supplied in J55, K55, N80, L80, T95, P110 and matching project grades.

What cement-port configurations are available?

Available Float Shoe ports include:

• Side ports
• Down jets
• Up jets

What guide-nose configurations are available?

Available noses include:

• Cement nose
• Composite nose
• Aluminum nose
• Round nose
• Bullet nose
• Eccentric nose
• Tapered cut-lip nose

Are cementing plugs supplied with the Float Collar?

Yes.

The Float Collar is supplied with matching bottom and top cementing plugs, including non-rotating plug systems.

Information Required for Quotation

Please provide:

• Float Collar, Float Shoe or complete set
• Casing OD
• Casing nominal weight
• Casing grade
• STC, LTC, BTC or premium connection
• Premium-thread drawing
• Single- or double-valve design
• Conventional, non-rotating, auto-fill or stab-in type
• Plunger, poppet or flapper valve
• Cementing-plug type
• Shoe-track length
• Float Shoe nose type
• Cement-port arrangement
• Maximum circulation rate
• Drilling-fluid density
• Cement-slurry density
• Maximum solids size
• Lost-circulation-material requirement
• Required back-pressure rating
• Bottomhole circulating temperature
• Bottomhole static temperature
• Well depth
• Maximum inclination
• Horizontal interval
• H₂S concentration
• Standard or sour service
• PDC-drillable requirement
• Performance-test designation
• Third-party inspection
• Documentation requirements
• Required quantity
• Destination country
• Delivery schedule

Request a Technical Quotation

Goldenman supplies Float Collars, Float Shoes and complete cementing float-equipment packages for surface, intermediate, production and liner casing strings.

The complete range covers:

• Casing sizes from 4-1/2 to 20 in
• Standard reverse-pressure ratings of 35 MPa
• HPHT configurations up to 10,000 psi and 400°F
• Single- and double-valve systems
• Conventional and Non-Rotating Float Equipment
• Auto-Fill and Differential-Fill systems
• Stab-In inner-string cementing equipment
• STC, LTC, BTC and premium casing connections
• J55, K55, N80, L80, T95 and P110 body grades
• PDC-drillable aluminum, phenolic and composite components

Complete orders are supplied with matched cementing plugs, connection protectors, material traceability, valve-function records, reverse-flow testing and back-pressure test documentation.

Email: info@goldenman.com