FISHING TOOLS - National Oilwell Varco

Intervention, Retrieval, and Recovery
FISHING TOOLS
NOV Downhole is the manufacturer of Bowen ® Fishing Tools, the world’s most respected and reliable fishing tool products in the oil and
gas industry for over 85 years. Fishing Tools are utilized in two types of operations.
1. Well Intervention – the operation of servicing an underperforming well in order to increase its production
2. Fishing – the operation of recovering an object that is stuck, damaged, or lost in the wellbore
NOV Downhole provides a vast range of fishing tools that have become industry standards. The comprehensive list of products includes
catch tools, fishing stroking tools such as jars, intensifiers, and bumper subs, junk retrieval tools, milling and cutting tools, as well as
repair and remedial tools. We lead the industry in terms of the size and diversity of our fleet and our ability to provide and service tools at
a global level.
Each fishing tool is engineered to perform a specific operation. Since several fishing tools are utilized to make a fishing bottom hole
assembly, each tool enhances the performance of the others to provide the most effective solution for all types of well intervention and
fishing operations.
NOV Downhole’s Bowen ® Line of Fishing Tools:
External catch fishing tools
Internal catch fishing tools
Junk retrieval fishing tools
Milling and cutting tools
Accessory tools
Repair and remedial tools
NOV Downhole offers a computer-based Fishing Jar Placement Program that determines the optimum jar placement in the fishing string
to maximize the energy of the jarring impact and impulse. This successful, field-proven placement program compensates for the effects of
hole angle, hole curvature, and frictional drag making it applicable for straight, directional, and horizontal hole analysis.
External Catch
Fishing tools that engage the fish on its
outer diameter. These tools help you recover
equipment downhole by using a grapple or by
threading directly to its outside surface.
Internal Catch
Fishing tools that engage the fish in its inner
diameter. Similar to External Catch Tools,
this is achieved by a grapple or by threading
directly to the fish’s inside surface.
Junk Catch
Fishing tools used to remove debris, also
known as “junk”, from the wellbore. Magnets
and junk baskets are ideal when retrieving
a fish that is broken into pieces or has an
irregular shape.
Milling and Cutting
Fishing tools used to mill or cut objects
downhole for a specific reason. Whether
you are milling up a fish that could not be
retrieved to surface, cutting casing or tubing
in an intervention operation, or performing a
washing over procedure, NOV Downhole has
the tools for the job.
Accessory Tools
NOV Downhole offers a variety of tools that
enhance the fishing operation. Bumper subs
provide you that extra movement in the
drillstring when finding the top of the fish,
fishing jars create the impact and impulse
force to free the stuck fish, and our intensifiers
are run in conjunction with the fishing jar to
increase the jarring impact.
Remedial and Repair
Scrapers are used to clean the casing’s inside
wall, rollers restore the the inner diameter
of casing and tubing to their normal inside
diameter and roundness, and patches form
a permanent sealed connection between two
strings of tubing or casing.
Engineering Services
NOV Downhole provides customized solutions
to your specific application. When a special
tool is required, our experienced engineering
staff is available to evaluate your application
and provide a specific and reliable solution.
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