Tailpipe / Horizontal Production System

Gadget

A single-trip, third-generation tailpipe system that keeps the seat nipple in a more optimal position to pump — increasing production and prolonging mean time between failures.

Gas Fluid Solids
Render of the Gadget system running from surface through the curve into the horizontal wellbore

Overview

The Gadget System creates a more efficient means to produce horizontal wells. Through a series of tools run in a single trip, it helps maintain a more optimal pump position, increasing production and prolonging mean time between failures — which helps bring down lease operating expense.

How it works

A multi-purpose velocity string that draws the reservoir down further while keeping the pump high.

  • Single-trip tailpipe string

    The Gadget System is a third-generation tailpipe where a series of tools runs below the seat nipple or ESP as one single-trip production system.

  • Gaseous flow regime

    As a multi-purpose velocity string, the tailpipe section achieves a more gaseous flow regime, creating a lighter hydrostatic column on the reservoir. That lets the pressure draw down further while the pump stays high.

  • Desander for sandy wells

    A desander can be placed at the entry of the tailpipe to remove solids before they move uphole, with a debris barrier above the anchor packer to keep solids from landing directly on the tool.

  • Retention valves for sluggy wells

    Retention valves help prevent fluid from falling backward when critical lift isn't always achieved. The retention setting is adjustable, allowing some fluid to flush back downhole without killing the well.

Detail render of the Gadget packer assembly through the wellbore curve

System components

A lower completion for solids and slugging control, an upper completion for gas handling and safe retrieval.

Lower completion

  • Desander to prevent solids
  • Cup packer to prevent slugging — no setting mechanism required
  • Sized tailpipe to create critical lifting velocity
  • Retention valve to prevent fluid fallback

Upper completion

  • Gas separator to remove gas — basin-specific separators available
  • Anchor / packer guard to keep solids off the anchor packer
  • AutoJay set / release anchor packer
  • Retention valve to prevent fluid fallback

Features & benefits

Results

3-year run life, with production brought above trend.

Sustained increase in production without lowering the seat nipple.

Related system

Technical data sourced from Vannevar internal data sheets, current as of the most recent revision on file.