What is a Rathole in drilling?
[Drilling] Extra hole drilled at the end of the well (beyond the last zone of interest) to ensure that the zone of interest can be fully evaluated. The logging tool string may be as much as 120 ft [36.5 m] in length, so the rathole allows tools at the top of the logging string to reach and measure the deepest zone of interest.
What is the purpose of a rat hole?
The rat hole is also the extra hole drilled after total depth has been reached. It allows for more working room for long or multiple tools downhole. It also is used to give additional room for junk and sand to fall. The rat hole is an opening in the rig floor where the kelly can be stored.
What is a mouse hole in a drill rig?
The mouse hole is an opening in the rig floor that allows for the fast connection of a single joint of drill pipe to the drill string during drilling. A new joint of drill pipe is lowered into the mouse hole where it waits for the next connection. Each time the drill bit has deepened the hole...
What is the difference between a Kelly and Rat Hole?
The kelly and drill pipe joint will be raised from the mouse hole and screwed into the top of downhole drill string so that the rig can drill deeper. The rat hole is also the extra hole drilled after total depth has been reached. It allows for more working room for long or multiple tools downhole.
What is a rat hole?
The rat hole is also the extra hole drilled after total depth has been reached. It allows for more working room for long or multiple tools downhole. It also is used to give additional room for junk and sand to fall. The rat hole is an opening in the rig floor where the kelly can be stored. The kelly fits into the rotary table.
What is a mouse hole?
The mouse hole is an opening in the rig floor that allows for the fast connection of a single joint of drill pipe to the drill string during drilling. A new joint of drill pipe is lowered into the mouse hole where it waits for the next connection. Each time the drill bit has deepened the hole (the length of a joint of drill pipe), an additional joint of drill pipe will be added to the drill string. The kelly will be unscrewed from the drill string and screwed into the new single joint of drill pipe. The kelly and drill pipe joint will be raised from the mouse hole and screwed into the top of downhole drill string so that the rig can drill deeper. The rat hole is also the extra hole drilled after total depth has been reached. It allows for more working room for long or multiple tools downhole. It also is used to give additional room for junk and sand to fall.
How deep are rat holes?
Another distinct feature of rat holes is depth. These burrows are rarely more than 3 feet long and 18 inches deep. Deeper rat holes generally happen when the rodents are attempting to burrow past a barrier such as the building’s foundation or a concrete slab.
How to find rat holes in yard?
In short, rats like anywhere they can find sufficient cover and protection against the elements and predators. Start with the suspected area, such as the deck and search in a straight line. Move on the next probable location for rat holes until you have inspected the entire yard.
Why do rats gnaw?
Rats gnaw incessantly to keep their teeth trim and sharp making wires and plumbing easy targets. You can expect electrical and plumbing issues in no time including leakages, shorts, and even fires. Rat holes are unsightly and relatively easy to spot.
What is a rat runaway trail?
rat runaway trail. When you stumble upon a bunch of rat holes in your yard, you might very well confuse them for mole holes. Even though at a first glance they may look very indistinguishable from one another, taking a closer look and inspecting the yard hole may reveal something totally different than a mole.
What does it mean when you see rat droppings?
1. Droppings: If you notice rat droppings in your home as you clean it, that means this pest has gained access to your home. The droppings which resemble seeds are a bit shiny when they are fresh and become dark over time.
What are the holes in my house that attract rodents?
For one, these exposed holes and burro ws are letting other rodents into your house. Even if you are successful in eliminating the rats, pheromones left behind in the nest attract other rodents. These new invaders aren’t limited to just rats and may include birds, skunks, raccoons and squirrels among others. The exposed holes allow other rodents free reign into your home and property where the larger rodents only need to expand the existing holes to slide through.
What do rats make their nests out of?
Rats make their nests out of a bunch of material including plant materials, cotton and twigs, and manmade debris such as insulation, hair, paper, and cloth. The typical nest may have various compartments including a specific area for storing food.
