Oil & Gas Technologies

FLEX / FLEXI-BALL & ROTA/ROTARY-BALL TYPE BALL JOINTS

  • SUITABLE FOR OIL & GAS INDUSTRIES IN
  • OIL EXTRACTION
  • STEAM INJECTION
  • STORAGE TANKS
  • OIL-WELL HEADS
  • HIGH TEMPERATURE PIPING SYSTEMS AND VARIOUS INDUSTRIAL PIPING APPLICATIONS
  • OIL & GAS FLOW LINE TECHNOLOGIES
  • ALTERNATIVE ENERGY AND POWER GENERATION
  • DRILLING, COMPLETIONS, OIL & GAS WELL INTERVENTION
  • OFFSHORE-SUBSEA
  • OFFSHORE-TOPSIDE
  • PROCESS & PRODUCTION

OUR PRODUCTS ARE ENABLING RENEWABLE SOLUTIONS. OUR TECHNOLOGIES ARE USED IN DEMANDING APPLICATIONS INCLUDING FPSO’S, REFINERIES, SWIVEL & SWIVEL APPLICATIONS, PIPE CONNECTORS, FLOWLINES, PROCESS PIPING APPLICATIONS, CHEMICAL PROCESSING & PETROCHEMICAL REFINERIES.

We at ‘Fourwents’ offers a vast range of engineered, standard & customized Flexi-ball & Rotary-ball type Ball Joints, Swivel Joints & Loading-Unloading Arms for a broad range of uses in industries and applications.

Our design efforts are supported by a State–of–The-Art Cad System for faster, more accurate response to your technical request. ‘Fourwents’ Flexi-ball, Rotary-ball type Ball Joints, Swivel Joints & Loading-Unloading Arms are durable, reliable, easy to operate & maintain & we meet your most demanding specifications.

Our manufacturing and testing procedures meet or exceed industry standard.

‘F’ SERIES

FLEX / FLEXI-BALL & ROTA/ROTARY-BALL TYPE BALL JOINTS

The exible joint method and the pipe loop method are the two main methods for providing piping exibility.

This paper investigates how exible joint methods, particularly the

BALL JOINT DESIGNS

MULTIAXIAL FLEXIBLE JOINT (FLEXI BALL JOINT)

UNIAXIAL BALL JOINT ( ROTA BALL JOINT )

As shown in above diagram, the most common type of ball joint (also known as a ball-and-socket joint) is made up of three main pieces. It has an inner ball-shaped adapter that is surrounded by a two-piece dome-shaped casing and retainer. The sealing mass is placed in the seal groove, and the adjacent surfaces completely enclose the seal cavity. The sealing mass is placed in the seal groove, and the adjacent surfaces completely enclose the seal cavity. The sealing material completely lls the seal cavity in which it is placed. The compressive loading applied by the screws and during the installation phase is sufcient to cause the sealing material to flow into the casing wall irregularities and against the ball, resulting in a tight seal. The joint can rock within the range specied by the opening of the outer housing or retainer. It can also rotate 360° degrees axially. Both Rotary axial swivel joints (hereafter referred to as Rota joints) and multi axial flexible joints ( hereafter referred to as Flex joints) are ball joint design variants that provide rotation only and flex and rotation movements, respectively. The break-off moment is the moment required to rotate the joint, and its magnitude is available from the joint's manufacturer. This break-off moment can have a signicant impact on the piping system's flexibility.

“A-FRAME” 3 JOINT SYSTEM (Flexi Ball+Flexi Ball+Rota Ball)

Traditionally, vertical wellhead thermal growth or reduction has been accommodated by two Rota joints and one Flex joint arranged in series with their axes nominally parallel, arranged at the three points of an inverted "V" .

This structure is known as an “AFRAME”.The “A-FRAME” solution with the traditional conguration generally works well enough once installed; however, this approach has some notable shortcomings : it is time consuming to install (which adds to expense) because precise alignment is required, and if precise alignment in the eld is not achieved, it creates additional bending moments on the bottom Rota joints may cause an increase in the nominal break-off moment, pipe overstress, and long-term joint quality problems. It should be noted that the above ball joint conguration concept allows for the ability to fold or unfold the spool by releasing the screws of one or all of the ball joints during the installation and erection of an “A-FRAME”. The break-off moment of the connection can be considerably reduced by loosening the screws, and once the installation process is complete, they can be retorqued using the appropriate torqueing equipment.

The new “A- FRAME ” design is straightforward, as illustrated in diagram. The new “A-FRAME” design includes two Flex and one Rota joint ( Flexi Ball Joint+Flexi Ball Joint+Rota Ball Joint ), which can accommodate misalignment or installation tolerances without requiring precise alignment.

“A-FRAME” 3 JOINT SYSTEM (Flexi Ball+Flexi Ball+Rota Ball)

A-FRAME” DIMENSIONS

NODE/CNODE PAIR (NO PIPE EXISTS BETWEEN 1&2)

MULTIAXIAL FLEXIBLE JOINT SECTION VIEW (FLEXI BALL JOINT)

  • 360° of rotational freedom and 30° total flex capability.
  • Field-adjustable compression type seal that is most reliable.
  • For better wear and smoother performance ball with a chrome plating.
  • Friction and wear are reduced by a hard bearing surface. Independent compression while packing.
  • For best results, joints can be used in conjunction.
  • Field-adjustable packaging for less expensive maintenance.
  • Absorbs mechanical action and thermal growth.
  • Compensates for pipe system misalignment other than massive pipe loops.
  • Designed to prevent bending loads and thermal expansion strains in piping systems for SAGD, cyclic steam.
  • Low torque.
  • Inline maintenance.
  • Compact, strong, and light-weight forgings are machined to create this design.

FLEX / FLEXI-BALL

New Three Ball Joint Conguration For
Cyclic Steam Stimulation-based Heavy Oil Production
OR
Steam Assisted Gravity Drainage

ABSTRACT

Individual Steam Assisted Gravity Drainage (SAGD) or Cyclic Steam Stimulation (CSS) wellheads undergo thermally induced growth on the order of 0.5 m to 1 m, resulting in a bending moment or side loading due to thermal expansion. This wellhead thermal growth is signicant enough that ball joints are typically installed in the piping system adjacent to the well head to accommodate the required growth, reduce stress on wellhead connections, and improve long-term pipe sealing. The new A-frame design has one uniaxial Swivel joint at one bottom end of the “A-FRAME” (piping side) and two multiaxial exible joints at the other points of the “A-FRAME”.

This conguration provides the full three degrees of freedom required to accommodate vertical and horizontal misalignment of the wellhead and adjacent piping. However, pipe stress analysis must be used to assess the stability of the new “A-FRAME” design with different nominal pipe sizes under sustained load cases. According to the endings of the analysis, the new “A-FRAME” design will be stable under Sustained load cases with no risk of sagging in the eld. Furthermore, the industry has begun to implement the new “A-FRAME” design, which has been validated under realistic eld conditions.

‘F’ SERIES FLEXI-BALL & ROTARY-BALL TYPE BALL JOINTS

'Fourwents' Flexible piping ball joint connectors have been developed to meet industry's need for high quality, cost effective flexible piping connectors with enhanced mechanical and sealing properties. 'Fourwents' flexible piping connectors have been designed to provide reliable service in the most severe applications.

DESIGN FEATURES

‘Fourwents' Flexiball and Roto-ball Ball Joints exible connectors are an effective solution to provide piping systems with the exibility required to compensate for thermal growth, vibration or motion of equipment in the piping system.

Standard Design features :

  • Absorbs thermal growth and mechanical movement in single and multiple plane displacements including rotation.
  • Engineered to eliminate thermal expansion stresses and bending loads in piping systems.
  • Compensates for misalignment in piping systems.
  • Joints can be used in combination for optimal results.
  • Alternative to large pipe loops.
  • Advanced & reliable sealing technology.
  • Hardfaced bearing surface to reduce friction and wear
  • Low torque.
  • Robust, compact and light weight design.
  • Field adjustable packing.
  • Inline maintenance.

CODES & STANDARDS

  • Designed to meet the requirements of the many codes and standards.

QUALITY MATERIAL

  • Carbon Steel, Stainless Steel,
  • Advanced Materials : Titanium, Duplex, Inconel.

PRESSURE & TEMPERATURE

  • Ansi 150# to 1500# high temperature design available to 1000 °F
  • Higher available per application

SIZES

  • Standard size range - 3/4” to 6”(Inch)
  • Other Customize sizes also available.

END CONNECTIONS

  • Butt weld
  • Socket weld
  • RF or RTJ Flange
  • Specic to suit the

DESIGN OPTIONS

Depending on the requirements of the specic application, 'Fourwents' exible piping connectors can be outtted with a variety of options. Contact 'Fourwents' for additional information or technical support for your application. Available design options include: Purging, Injectable Packing, Enhanced live loaded seal packing design, Seal monitoring ports.

QUALITY & SERVICE

Factory engineered, manufactured and tested with in ISO 9001-2015 quality standard registered program.
Fourwents Considerable experience and background, enables our customers to get the best and most reliable equipments for their application. Pre-assembled and shop tasted Ball Joints and Swivel Joints.

APPLICATIONS

  • High temperature piping systems
  • Steam assisted gravity drainage (sagd) systems
  • Steam piping systems
  • Thermal injection of oil well heads
  • Rotary digesters in paper mills (Rotational movement)
  • Marine loading applications

3 JOINT SYSTEM

Provides maximum capability to accommodate signicant piping system movements.

EXTRACTION OF THERMAL OIL

Universal ball joints accommodate wellhead movement in enhanced oil recovery processes such as steam-assisted gravity drainage (SAGD), cyclic steam stimulation

PIPING SYSTEM THERMAL EXPANSION

Flexi-ball and Rota-balls can be used to accommodate linear or rotational movement to ensure potential damage as a result of reactive forces imposed on the system is eliminated.

PIPING SYSTEMS FOR SOLAR ENERGY

Universal ball joints are appropriate for use in solar thermal energy systems where pipe spools must be fexible for solar tracking movement and thermal expansion.

PIPE ALIGNMENT

Flexi-balls can provide effective joining of improperly aligned or offset piping system.

PIPE MOVEMENT

When a hose is not suitable due to size, pressure, or temperature constraints, a pipe spool with Universal ball joints is the solution. The universal ball joint is appropriate for both low and high-cycle applications

THERMAL CYCLING

Flexi-ball is an effective way of accommodating expansion and control in the amount of piping systems. Thermal expansion in elevated operating temperatures

SUBSEA

The universal ball joint is a one-of-a-kind solution for subsea applications because it can accommodate static misalignment and pipe movement while also reducing stress at ow line connectors.

SETTLEMENT OF TANKS, VESSELS & EQUIPMENT

Flexi-balls can be used to accommodate equipment settlement during loading or over time to eliminate the potential of piping or equipment nozzles damage.

ANGULAR MISALIGNMENT

Universal ball joints can compensate for piping system joining leg misalignment. Whether the two lines are parallel and oset or come together at an acute angle over a short piping distance, the ball joint provides an eective seal.

PIPING SYSTEMS FOR MARINE LOADING

Universal ball joints can compensate for piping system joining leg misalignment. Whether the two lines are parallel and oset or come together at an acute angle over a short piping distance, the ball joint provides an eective seal.

‘F’ SERIES FLEXI-BALL JOINT & PIPE MOVEMENT