power tong frame supplier

Our experienced and skilled power tong technicians play a major role in the safety and efficiency of a casing run. This makes the selection of your power tong service company a key component of overall performance.

ProTorque attracts and employs some of the industry’s most talented and experienced casing running technicians. Every detail of a casing run must be considered when looking for cost savings and efficiency; particularly on long production strings where every second counts while maintaining a safe operation. When making-up hundreds of connections, filling on the fly and selecting the correct handling equipment (air or hydraulic powered slips); we save time and effort on long challenging casing runs. ProTorque can meet handling requirements of up to 500 tons of hoist capability.

The HD26000 casing tong can handle tubulars as small as 10-3/4″ and as large as 26″ in diameter. Other sizes can be special-ordered. Tong can be mounted on either a CLINCHER® or a FARR® hydraulic backup. Available with McCoy’s patented WinCatt® data acquisition and torque control system for the make-up of tubular connections.

Model XQ28/2.6 hydraulic power tong is an improved type of XYQ1.8 which is used to make up and break out sucker rod thread in Well Service. This product has the following features:

A. The structure is compact, concise and light. Master tong is driven by a low-speed large torque hydraulic motor that matches with a manual control valve. The backup tong is just like a spanner. The total weight is approximately equal to XYQ1.8.

B. The operating is briefness and convenience with high efficiency. Put the respondence size jaw set into master tong and the respondence size glutting into backup tong, turning the reset knob incorrect direction then can make up and break out sucker rod by operating manual control valve. Two speed, snapping at low speed, spinning at high speed.

Versatility is the name of the game here as this tong works well whether powered by a workover rig or a portable casing tong power unit. Options include manual backup or cam-type hydraulic backups.

TThe Tri-Grip® Backup is the industry standard for reliable make-up and break-out of tubular connections that are optionally supplied with Eckel tongs. Utilizing two hydraulic cylinders and a three head arrangement ensures a slip-free operation. The backup is suspended at an adjustable level below the power tong employing three hanger legs and allows the backup to remain stationary while the power tong moves vertically to compensate for the connection"s thread travel. The Tri-Grip® uses two pivoting heads and one stationary. The Eckel Tri-Grip® Backup has exceptional gripping capabilities with Rig Dies when running drill pipe or optional Eckel Wrap-Around True-Grit® dies or Pyramid Fine Tooth dies for making up other types of tubular.

For casing up to 20 inches, here"s a tong that combines surprising speed with an ability to handle smaller sizes economically (as small as 7 inches). The 20 Standard reaches peak efficiency at just 38 horse power input, thus requiring no "souped-up" power unit. Available torque: 42,000 ft-lb

XQ140 micro-marking and no-marking hydraulic power tongs is a special equipment and open power tongs which is applicable to make up or break out 41/2"-51/2" casing during oil field work over operation. Master and back tong device adopts jaw plate type multi-point clamping mechanism.Can choose contour coated rig dies or pyramid tooth , to ensure the column minimum damage, and can improve the pipe thread connection quality, reduce due to improper work over pipe accident etc..

1. The tongs head is the open structure which is quick and convenient for entering and retreating working position. The integral tong head has good hardness and rigidity.

2. Master tong is roller climbing two jaw plate structure，can install arc tooth die ，the contact surface is more larger and clamp no deformation, The assembly and disassembly is very convenient. The optimum tangent-diameter ratio design ensures reliable clamping and easy slope retreating.The back tong is the three-jaw-plate structure pushed by hydraulic cylinder. The structure is simple and the clamping is reliable; The minimum damage to the tubular column can be ensured, and the main body of the pipe string can be clamped.

6. Master and back tong adopt integral frame structure，back tong is floating connection，The master and back tong adjustable distance, reduce the damage of pipe string shackle;

The present invention relates to open-head power tongs used in drilling operations, and more particularly, is directed to an improved means of actuating and deactuating the operation of the power tong drive means in response to the opened and closed positions of an access door.

As well known in the drilling industry, power tongs are employed in making-up and breaking-out operations of casings, tubings, rods, pipes and the like. More particularly, power tongs are used to grip and rotate lengths of drill pipe or the like to connect or join several lengths of pipe together to thereby form a drill string in a make-up operation, and in the alternative, to grip and rotate a length of drill pipe to disconnect it from the drill string in a break-out operation.

One type of power tong commonly used today is the open-head tong, such as the one shown and described in U.S. Pat. No. 4,060,014. The open-head tong has a bifrucated frame defining a central opening and a side opening communicating with the central opening for the passing therethrough of a drill pipe or the like. Due to the extreme costs of drilling, open-head tongs have become very popular, in that, they can easily and readily be moved into and out of an operative position when they are needed in the making up and breaking out of drill strings.

In operation, the open-head power tong exerts large rotational torques on the drill pipes, usually the larger the tong, the larger the torque output. Due to these large torque outputs and the resulting forces generated therefrom, the open-head tongs have been provided with an access door that bridges the gap between the bifrucated ends of the tong. The primary purpose of such an access door is to strengthen the tong structure so as to prevent, during the operation of the tong, the bifrucated ends from separating or springing apart, which not only results in damage to the tong, but could also inflict injury to the operating personnel. The access door, in addition to providing structural rigidity to the tong, also provides the operator with safety in bodily protecting him from the rotating pipe gripping and engaging jaws.

Such access doors perform very satisfactorily in providing structural rigidity to the tong and do provide protection to the operators from the rotating components of the tong when the door is properly latched in position during the make-up and break-out operations; however, in an effort to save time, operators have been known to operate the tong with the access door open, and in some instances, the operators have even removed the access door from the tong. Such operator"s carelessness not only causes costly structural damage to the tong, but also results in personal injury to the operator.

In U.S. Pat. No. 2,705,614 there is shown an open-head power tong having an automatic hydraulically powered access door, operably interconnected to the hydraulic cylinders that actuate the jaw gripping mechanism, which must be closed before the jaws can be actuated so as to rotate a drill pipe. Such door interlock mechanism has been specifically designed for the type of tong disclosed and is not readily adaptable to other types of power tongs, such as the one shown in the above-mentioned U.S. Pat. No. 4,060,014. Further, the hydraulic circuitry that is involved with such a powered access door is not only complicated, having expensive components, but is also, costly to maintain and repair. Still further, such door interlock mechanism does not provide adequate safety to an operator, in that, although the operator is protected from the pipe gripping and engaging mechanism when the door is closed, he is also subjected to the risk of having the power operated door being automatically swung into him as it is being closed, thus, creating a potentially dangerous and unsafe condition under which the operator must work.

The present invention obviates the problems experienced with access doors and disadvantages associated with the prior art door-interlock mechanisms by providing, as one of its principle objects, an improved door-interlock mechanism for an open-head power tong that ensures the access door is in a closed position before the tong can be operated, thereby preventing possible structural damage to the tong from operating the tong with the door open, as well as, preventing personal injury to the operators by protecting them from the various rotating components of the tong.

Another object of the present invention is to provide a door-interlock mechanism for an open-head power tong that is simple in structure and adaptable to all types of open-head power tongs.

Accordingly, the present invention, sets forth in an open-head power tong having an access door mounted on the tong and moveable between opened and closed positions, an improved door-interlock mechanism that includes means for controlling the operation of the tong in response to the opened and closed position of the door. More particularly, the control means preferably includes a pneumatic contact valve interconnected with a pneumatically piloted diverter valve operably associated with the power means of the tong such that the power means is placed in either an operative or inoperative condition in response to respective closed and opened positions of the door. Specifically, the pneumatic contact valve is so positioned in the vicinity of the side opening that the door, in its closed position, engages the contact valve thereby actuating the diverter valve to permit operation of the power means, and when, the door is moved from its closed position out of engagement with the contact valve, the contact valve causes the diverter valve to deactuate the power means, thus stopping the operation thereof.

FIG. 1 is a top plan view of an open-head power tong incorporating the improved door-interlock mechanism of the present invention with the access door being in its closed position in engagement with the contact valve which actuates the diverter valve.

FIG. 2 is a diagrammatic fragmentary view of the power tong showing the side edge portion of the access door with the door latch removed and with the contact valve being in disengagement with the door which is partly open.

Referring to the drawings, and particularly, to FIG. 1, there is shown, for illustration purposes only, an open-head power tong, being generally indicated by the numeral 10, incorporating the principles of the present invention. The tong illustrated in FIG. 1 is of the type shown and described in U.S. Pat. No. 4,060,014, and thus, for the sake of brevity, since the tong itself forms no part of this invention, only a brief description of the tong will follow.

Briefly, as best seen in FIG. 1, the power tong 10 is comprised of a bifrucated frame structure 12 defining a central drill pipe receiving opening, and a side opening that communicates to the central opening for laterally passing a drill pipe therewithin. Rotatably supported within the frame structure 12 is a pipe engaging and gripping means that includes jaws 14 that swing into and out of the central opening for gripping and rotating a drill pipe disposed within the central opening during make-up and break-out operations of a drill string. The pipe engaging and gripping means with its associated jaws 14 are rotatably driven through a suitable drive train (not shown) by power means such as the hydraulic motor 16 which receives fluid under pressure from a suitable hydraulic pump (not shown) and through a hydraulic control valve 17. The valve 17 is conventional, being moveable between three spool positions; one position being such that the fluid drives the motor in a forward clockwise direction, another position being such that the hydraulic fluid drives the motor in a reverse counterclockwise direction, and the third position being a neutral position wherein fluid passes through the valve to the return line that returns the fluid to a reservoir (not shown) for recirculation thereof.

Also supported on the frame structure 12 is an access door 18, adapted to span or bridge the access opening defined between the bifrucated end portions so as to provide structural rigidity to the power tong 10, as well as, to protect the operator from the various moving components, such as the jaws 14. One end of the access door 18 is hinged to an end of one of the frame bifrucations by a pivot pin 20 whereas the free end of the door is provided with a self-latching arm 22 that engages a latch member 24 mounted on the other bifrucation so as to positively latch the door when it is closed. The door and the door latching mechanism are of the type shown and described in a pending U.S. application, bearing U.S. Ser. No. 791,752; filed Apr. 28, 1977; and entitled TONG LOCKING MECHANISM. The door and the latching mechanism forms no part of this invention and thus a further description will not be given.

To ensure that the tong 10 is only operated when the door 18 is closed, closing the access opening, the tong 10 is provided with an interlock mechanism which basically includes a contact valve 26, engageable by the door 18, and a hydraulic diverter valve 28, operably associated with the hydraulic motor 16 so as to permit flow of hydraulic fluid to the motor, or, in the alternative position, to bypass the flow of hydraulic fluid around the motor.

As seen in FIGS. 1 and 2, in particularly FIG. 2, the contact valve 26 is mounted on the front side of the frame structure 12, in proximity to the access opening, and is so positioned to be engaged by the door 18 when the door is closed and disengaged when the door is opened. The contact valve 26 has an internal spring that biases the valve to its disengaged position. A suitable source for generating pneumatic pressure, such as a compressor (not shown) is provided to supply pressure to the valve 26 through inlet line 30 and therethrough, when valve 26 is in its engaged position, via line 62 to one end of the pneumatic piloted hydraulic diverter valve 28. When pressure is so applied on the diverter valve 28, the valve is so positioned to permit hydraulic fluid to flow to the motor 16 and thereby its operation. However, when pressure is relieved from the diverter valve 28, which is caused when the door 18 is disengaged from the contact valve 26, an internal biasing spring forces the valve to a position which diverts the flow of hydraulic flow around the motor 16, and thus, stoppage thereof.

Now turning to FIG. 3 which schematically represents the various operating components as well as the hydraulic and pneumatic circuitry associated therewith, the operation of the door interlock will be further described. First, it should be noted that both the hydraulic source and the pneumatic source are fully operating with respective fluids being under pressure in inlet lines, the access door 18 being closed, engaged with the actuating arm of the contact valve 26, the piloted diverter valve 28 being detented so as to pass the flow of hydraulic fluid around the motor 16, and with the hydraulic spool control valve 17 being in its neutral position such that fluid passes directly therethrough to the reservoir tank via inlet line 34, passageway 36, return line 38. Thus, as the spool valve 17 is shifted to its forward drive position, hydraulic fluid passes from the inlet line 34, through passageway 40, to line 42, through passageway 44 (of diverter valve 28), to line 46 which directs fluid into the left-hand side of the motor 16, and then via lines 48,49 to passageway 50 of valve 18 which is internally connected to the hydraulic return line 38. If the spool valve 17 is shifted in an opposite direction so as to reverse the direction of the motor 16, fluid flows via line 34, through passageway 52 to line 49 and line 48 to the right side of the motor 16, and then returns via lines 46, passageway 44, line 42 to passageway 54 which is internally connected to return line 38. It can be thus seen that when pressure is applied on the diverter valve 28, it is so positioned to pass hydraulic fluid either to one or the other sides of the motor 16 to thereby drive the rotating components of the tong 10 in either forward or reverse directions depending on the forward or reverse positions of the control valve 17. However, when the pneumatic pressure is relieved from the diverter valve 28, the internal spring forces the valve to the right, thus changing the flow path of the hydraulic fluid so as to bypass the motor 16. In such pressure relief position of the diverter valve 28, the fluid flow path is via lines 49,58, passageway 56 and line 42, thereby bypassing the flow of fluid to the motor 16. Since the flow of fluid through line 46 is blocked, no fluid passes to the motor 16, thus rendering it inoperative.

It can be understood from the foregoing that the described interlock-mechanism controls the operation of the hydraulic motor 16, and thus the operation of the tong 10, in response to the open and closed positions of the access door 18, such that the tong 10 can only be operated with the access door 18 in its closed position, and thereby eliminating the possibility of structural damage to the tong from operating same with the door open, as well as, providing safety to the operator from exposure to the various operating components of the tong.

US Power Tong’s 13-5/8” Standard Model Casing Tong (Pics below) is capable of biting pipe sizes 4-1/2” in diameter up to 13-5/8” in diameter. With its’ high torque capability rated at 45,000 lb./ft. as well as its’ lightweight and compact design, it makes this tong one of the most versatile and convenient models US Power Tong offers. This tong also offers a door interlocking system which helps reduce the chances of accidents. This tong operates from a hydraulic power unit that provides power to the tong. The biting system this tong uses is that of a cam style biting system.

US Power Hydraulic Casing Tong 13-5/8″ Light Duty Model Rated @ 30,000 lb/ft. w/Safety Interlock Door and Solid Hanger. (USPT-1619) or Hydraulic Casing Tong Standard Duty Model Rated @ 45,000 lb/ft. w/Safety Interlock Door, Solid Hanger, and High Torque Door. (USPT-1190)

Accessories and added options are also available with US Power Tong’s 13-5/8” Standard Hydraulic Casing Tong. Options that are available are listed below and the paragraphs following describe each item:

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The Derrickman™ casing alignment tool eliminates the risks of personnel working at height with a hydraulically powered stabbing arm and the stabberless T-CAT™ casing alignment tool, operated remotely from the rig floor.

Our Leadhand™ tong manipulating systemmoves the hydraulically powered tong to and from the well centerline mechanically, without the need for manual handling. The system facilitates a one-man tong operation, removing multiple personnel from the dangers of the well center.

We have the most comprehensive and robust suite of casing and tubing tongs available. These tong systems are complimented by self-contained hydraulic power units in a variety of diesel and electric configurations. We are able to provide zone-rated units for operation in hazardous areas, custom built, and certified to the highest industry standards.

Our tong systems cover a wide range of sizes and torque capacities from small tubing through large-diameter casing. Integrated hydraulic backups maximize safety, accuracy, and efficiency. All of our power tongs are compatible with ourSalvo torque-turn monitoring systemfor control and accuracy of makeup.