A standalone gas bypass sub for high-gas rod pumped wells — set above the gas separator and below the seat nipple, so gas moves around and through the TAC without adding backpressure to the fluid below.
TAC Bypass is used for high-gas rod pumped wells where the TAC creates backpressure that forces gas into the gas separator. The system is set above the gas separator, below the seat nipple, allowing gas to go around and through the TAC without putting additional backpressure on the fluid below. It's a patent-pending gas bypass system where fluid and gas move freely through and around the TAC, providing more flow area than a conventional through-TAC path.
A heavy-walled housing mates to any TAC, with a dip tube routing gas past it.
On high-gas rod pumped wells, the TAC itself creates backpressure that forces gas into the gas separator rather than letting it vent freely — reducing separation performance right where it matters most.
TAC Bypass sits above the gas separator and below the seat nipple, giving gas a path around the TAC without adding backpressure to the fluid still moving through the system below.
The outer housing is made of heavy-walled L80 material that mates up to any TAC on the market. A dip tube runs through the TAC, allowing gas to flow to surface while fluid continues on its own path.
The bypass is a short assembly by design, adding minimal length to the string while creating meaningfully more flow area above the gas separator.
| Spec | Value |
|---|---|
| OD | 3.5" (88.9 mm) |
| ID | 2.5" (63.5 mm) |
| Length | 2.5 ft (0.76 m) + TAC |
TAC Bypass is a standalone sub, distinct from the integrated TAC bypass built into the B83 and FatMan 239 housings. Technical data sourced from Vannevar internal data sheets, current as of the most recent revision on file.
