Rental tools

RWA provide rental varieties tools:

• Elevator specifications, requirements & sizes.
  RWA center latch elevators are constructed In two halves of practically the same weight for Proper balance and easier opening and closing. Safety features include guarded operating Handles to help prevent accidents to operators and an extra handle at the rear of the elevator for Faster, safer operation. All elevators are equipped with a latch and latch lock combination.
  In Some cases, an addition “latched-and-locked verification pin” must be installed prior to Lifting loads. RWA side door elevators consist of a stationary body and a door which can be opened to allow the pipe to be handled. All elevators have a latch lock mounted on the door.
  The construction Protects the latch from accidental opening. Both latch and latch lock operate from a single handle. RWA elevators are made of high-quality steel castings that Is fully heat treated.(Fig A)
• Safety Clamp.
  RWA offers safety clamps for tubing. Multipurpose (MP) safety clamps are adjustable to a variety of tubular. The clamp has its own box with a nut wrench and an Allen wrench. Manual clamps are equipped with screw and nut combination. The nut secures the clamp around the pipe and should be tightened with the supplied nut wrench. The clamp grips uniformly by design. The individual links give the clamp flexibility to wrap around the pipe and the inserts are spring loaded.(Fig B)
• Hydraulic Power Tongs.
  NOV Gill™ Services specializes in mobile rig handling tools such as the Power Tubing Tong, and the Power Tubing & Casing Tong. National Oil well Varco offers eight models of Gill Power Tongs, the Model 450 500, 500HT 550, 600, 600HT, 700 and RSHD Power Tubing Tong.(Fig C)
  
  

  Models

  • Model 500 Power Tubing Tong: With a maximum standard torque of 6,000 ft-lbs at 2,000 PSI, the Model 500 Power Tubing Tong enables operators to change gears during operation and an improved drive alignment minimizes wasted power, providing quiet operation and less friction.
  • Model 600 Power Tubing Tong: With a maximum standard torque of 12,000 ft-lbs at 2,000 PSI, the Model 600 Power Tubing Tong enables operators to change gears during operation and an improved drive alignment minimizes wasted power, providing quiet operation and less friction.
  • Model RSHD Tubing Tong: The Model RSHD Tubing Tong uses a traditional chain-driven design for a familiar jaw-and-bushing biting system.
  • Model 700 Power Tubing & Casing Tong: With a maximum standard torque of 20,000 ft-lbs at 2,000 PSI, the Model 700 Power Tubing & Casing Tong has the required torque for the job.
  Features/Benefits
  • Supports variable size ranges for all your needs.
  • Consistent operations provide fast make-up and break-out procedures.
  • Pressured oil bath ensures uniform lubrication of moving parts.
  • Available with air or hydraulic assist for back-up tool.
  • Adjustable clutch extends the life of transmission component.
  • Improved drive alignment minimzes wasted power and provides quiet running with less friction.
• Compressor and cleaning tool
  The drilling fluid forms a thin layer of mud on the sand grains of the borehole wall and is forced into the pore spaces and cracks in the aquifer. This plugging effect decreases the flow of water into the well. The act of cleaning out the clay and silt introduced during the drilling process as well as the finer part of the aquifer directly around the well screen prior to putting the well into service is called "well development".(Fig D)
  Benefits:
  • Increases the rate of water movement from the aquifer into the well.
  • Stabilizes the aquifer to prevent sand pumping, thereby producing better quality water and increasing the service life of the pump cylinder and well.
  • Removes organic and inorganic material which may inhibit effective well disinfection.
  By ensuring that wells are developed to the best possible technical standards, fewer boreholes will be required to meet the total demand and the wells will be less likely to fail within a few years.
  • Well Development Techniques:
    Well development methods are all based on establishing velocities of flow greater than those produced by the expected rate of pumping from the completed well. Ideally, this is combined with vigorous reversal of flow (surging) to prevent sand grains from bridging against each other. Movement in only one direction, as when pumping from the well, does not produce the proper development effect - sand grains can "bridge" voids around the screen. Agitation from pumping during normal pump use may cause these bridges to break down over time and sand to be pumped. This sand will act like sandpaper in the pump cylinder and will cause the cup leather to wear-out and the pump to fail within a few days or weeks! As discussed below, there are a number of techniques which can be used to develop newly constructed wells.
  • Over pumping:
    The simplest but least effective development method is pumping a well at 2-3 times the designed discharge rate for a prolonged period. This does not really agitate the soil enough to create a real filter around the screen and it tends to develop only a short section of the length of screen. However, it is useful because if the well can be pumped sand free at a high rate, it can be pumped sand free at a lower rate. If the water level is within 3.05 to 4.57 m (10 to 15 ft) of ground surface, it is sometimes possible to use the mud pump as a suction pump to pump water from the well for 2 to 3 hours. If this can be done, do not pump continuously: start-stop cycle pumping is best for developing a well.
    
  • Compressed Air: Compressed air can be injected into the well to lift the water; As it reaches the top of the casing, the air supply is shut off, allowing the aerated water column to fall (process called "rawhiding"). The air supply should be periodically run without stopping to pump sediment from the well.