Fishing Technology (7)

Using a Boot Basket

Description

Boot Baskets are used to trap cuttings which are too large to circulate out of
the hole during drilling, milling or junk fishing operations. The boot basket
should be run as close as possible to the mill, bit or junk basket, etc.

Figure 2-4: Boot Basket

Table 2-3:
Weatherford Type P Boot Basket

Function

The boot basket design traps junk by producing a sudden decrease in
annular velocity when cuttings pass the larger OD of the boot and reach the
smaller OD of the mandrel and top connection of the basket.

Loading up the boot basket

Using a Globe Type Basket

Description

The Globe type junk basket is used to recover any type of small object that
may be in the well bore. The successful operation of the tool requires that a
core be cut from the formation. Any junk will be recovered above the core.

Figure 2-5: Globe and Boot Baskets

Use

The Globe Type Junk Basket is recommended when performing fishing
operations in soft to medium formations (with a drilling rate above 15 feet
per hour).

Types of globe baskets

Two commonly used globe type baskets are:
1- Bowen Itco/Globe basket
2- Weatherford Globe Type Junk Basket
The Bowen Itco/Globe basket consists of a top sub, barrel, and tungsten
carbide milling shoe. Inside are two manganese bronze catchers that are
free to rotate.
Specifications for the Weatherford and Bowen Itco Globe junk baskets are
listed in Table 2-4 and Table 2-5.

Table 2-4:
Weatherford
Globe Type Junk Basket Specifications

Table 2-5: Bowen Itco Globe Type Junk
Basket Specifications

Requirements for the shoe

The crown on the shoe should be about 1/8" to ¼" less than the hole size.
ould ssed with sten carbide to about 1/8" less than the
catche
The ID sh be dre tung
ID of the rs.

Running the globe basket