Whether a drillstring breaks and falls to the bottom of the wellbore or a bit breaks, accidents happen. Even pipe or a tool can fall from the rig floor into the bottom of the well. This stray equipment that has fallen into the well is referred to as fish or junk, and regular drill bits cannot drill through it.
What does fishing mean in the oilfield?
1. n. [Well Workover and Intervention] The application of tools, equipment and techniques for the removal of junk, debris or fish from a wellbore.
What is a fishing well?
: a well for fish on a fish boat.
What are fishing operations?
In technical terms, a fish can be any object which has been lost or stuck in a borehole, and has a serious negative impact on well operations. … To solve this issue, fishing involves the use of special tools and procedures to recover the fish and allow drilling to continue.
What is down hole fishing?
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. Remedial and Repair.
What are the tools used in fishing?
Fishing tackle is the equipment used by anglers when fishing. Almost any equipment or gear used for fishing can be called fishing tackle. Some examples are hooks, lines, sinkers, floats, rods, reels, baits, lures, spears, nets, gaffs, traps, waders and tackle boxes.
What is Live Well for?
A livewell is a tank found on many fishing boats that is used to keep bait and caught fish alive. It works by pumping fresh water from the surrounding body into the tank, as well as keeping the water aerated.
Do fishing boats keep fish alive?
The fish is stored in boxes and covered with ice, or stored with ice in the fish hold. The fishing time of such vessels is limited, so they operate close to the landing place.
How long can fish live in livewells?
Fish will stay alive in livewells anywhere from 5 to 8 hours. This depends on several circumstances such as livewell size, fish count, oxygen count and more. These things are easy for anglers to fix and observe in order to keep their fish healthy for longer periods of time.
What is a downhole tool?
Downhole Tools are pieces of oilfield equipment that are used during well drilling, completion and intervention or well workover activities and helps the oil well in optimizing the production levels and maintain a continuous flow from a reservoir.