Bypass:

A pipe connection around a valve or other control mechanism that is installed to permit passage of fluid through the line while adjustments or repairs are being made on the control.

2.

A delivery of gas to a customer by means of a pipeline other than that customer’s traditional supplier.

For example, delivery of gas to an end user directly off a transmission pipeline without moving the gas through the end user’s traditional local distribution company supplier.

Terms Related to Bypass

• Pig

  1. A flow line clearing device, pumped through the line with normal flow. 2. A scraping tool that is forced through a pipeline or flow ...

• Control line

  A small-diameter hydraulic line used to operate downhole completion equipment such as the surface controlled subsurface safety valve (scssv). Most systems operated by control line operate ...

• Bury barge

  A vessel used to bury pipeline beneath the seafloor. The barge moves itself forward by means of anchors. A jet sled is lowered over the ...

• Sampler

  A device attached to pipeline to permit continuous sampling of the oil, gas, or product flowing in the line.

• Pressure-drop loss

  The pressure lost in a pipeline or annulus due to the velocity of the liquid in the pipeline, the properties of the fluid, the condition ...

• Valve

  A device used to control the rate of flow in a line to open or shut off a line completely, or to serve as an ...

• Reel vessel

  A ship or barge specially designed to handle pipeline that is wound onto a large reel. To lay the pipeline, the vessel pays out the ...