anchor type weight Indicator

Anchor Type Weight Indicators

Anchor Type Weight Indicators accurate and reliable indications of hook load and weight on bit are essential to drillers for the efficient control of ROP and hole direction. Weight indicator comes in either a panel mounted or box mounted version. Maintain weight indicator has proven over the years to be accurate and economical. Many models are available: Type D, Type E, Type EB, Type 125, Type 150 and Type 200.

In oil and gas production, snubbing is the process of inserting and pulling pipe into and out of wells  weight indicator The process can be a valuable tool for performing workovers without having to kill the well, but it involves using hydraulic jacks and must be performed carefully to balance well pressure with pipe weight and movement. The weight indicator is a tool that helps operators and crews monitor snubbing operations and avoid dangerous situations that can cause damage to equipment, personnel and the environment.

Snubbing is a safer and more efficient way to perform completion and workover activities than rigging down the well with traditional cable and sheave systems. Snubbing can also reduce non-productive time by allowing the rig to quickly snub in and pull pipe while performing completion and workover activities.

Snubbing requires the use of BOPs (blowout preventers) and other well control equipment, as well as careful balancing of well pressure with pipe weight. Rigging up the snubbing unit over the wellhead and installing BOPs is the first step. The next step is securing the snubbing unit to the rig draw works or using other slips and then monitoring the pressure and movement of the pipe. Once all the required steps are complete the weight indicator is attached to the pipe and the snubbing unit is released.

The weight indicator allows the operator to see when it’s safe to start inserting and removing the tubing and the snubbing unit is ready to move. Once the weight indicator is in place the operator can set the snubs to move up or down the stubs while monitoring the pressure and tubing weight. Snubbing indicators can also be used on the surface to monitor snubbing operation and help locate problems such as stuck tools, ball valves or wireline.

Shocks to the system can occur during snubbing operations, especially when the snubbing units are snubing out drill strings and snubbing in new ones. These shocks can cause the pressure gauge to experience water hammers, pulsation and pressure spikes that can damage the gauge and make it unreadable.

Several types of snubbers exist that work to arrest these rapid pressure fluctuations, spikes and pulsation in order to protect the gauge and improve gauge readability. The simplest and lowest-cost type is the porous disc snubber that creates a semi-permeable barrier between the incoming pressure and the gauge orifice. This causes the pressure to rise slowly, so it doesn’t jolt a valve or burst a bourdon tube.

Other types of snubbers use a piston-type design with a free moving piston that moves in the snubbers body to dampen the pulsation caused by rapid pressure increases. Piston-type snubbers are often self-cleaning and can be tuned for various processes by changing the size of the pistons. Another type uses a small pressure vessel with a long length of small bore (.010'' ID) capillary to allow the snubber to act as a shock absorber. This snubber traps the pressure pulse for a few milliseconds to reduce the pulsation and stop it from damaging the gauge.

Tags:16 inch weight indicator | anchor type weight indicator | bulk tank weight indicator systems