Casing Equipment Catalog Sec 13_Foam Wiping ... - Halliburton

Bottomhole Kickoff Assembly (BHKA) Tool
The bottomhole kickoff assembly tool was designed as a
premium method to get a competent cement plug set in a
wellbore environment where setting a successful plug on the
first attempt could be questionable. It is designed to help
secure a bottom floor in order to support the base of the
cement plug. This tool can be used for kickoff/sidetrack/plug
and abandonment purposes. It is mechanically operated by
wiper darts released from surface. This tool system utilizes
the BHKA disconnect tool, an aluminum sacrificial tubing
tail, an inflatable packer, and a diverter sub to help create a
favorable well condition for successful plug cementing
operations.
• This tool is available in the following sizes:
• 4 /12-in. OD tool.
– Fits 5 1/2- to 8-in. hole.
• 5 9/16-in. OD tool.
– Fits 6 1/2- to 10 1/2-in. hole.
• 10 1/4-in. tool.
– Fits 10 1/2- to 15 1/2-in. hole.
Features
This tool system features four major components:
• The BHKA disconnect tool located at the top of the
cement plug:
– Cement contamination is minimized by placing the
release mechanism near the TOC. This minimizes
swabbing the cement plug while pulling the work string
out of the hole.
• Drillable or non-drillable tailpipe:
– This drillable tailpipe remains in the cement plug to
prevent cement contamination as the work string is
being pulled out of the hole. The aluminum or steel
tailpipe length is equal to the length of the cement plug
less 20 ft. Tailpipe is not included with tool assembly.
• Inflatable packer element:
– The inflatable packer element creates a false bottom to
prevent cement movement. It also seals the formation
from gas or water migration. This portion of the tool
system is not drillable.
• Diverter sub:
– Located at the bottom of the sacrificial tubing. This
allows the wellbore to be washed from top to bottom at
the location the cement plug is to be placed across.
• The tool operates with two surface released darts.
• This system can be used in vertical, deviated, and highly
deviated applications.
• This plug setting aid system helps reduce detrimental
effects of fluid extrusion, spiral flow contamination, and
boycott effects.
• Centralizers may be necessary in larger wellbore
configurations.
HAL25013
Tubing Release
Dart
HAL25014
Inflation and Port
Opening Dart
Plug Setting Aids 13-10