At times, you will need to mill out collapsed casing and repair the casing using a casing alignment tool. You can also use a string mill and casing alignment tool to repair split casing. Bottom Hole Assembly The bottom hole assembly should contain, from bottom to top (connecting to drill collars): See the diagram below. …
A casing swage tool will typically repair the casing & restore collapsed casing to its original ID. Swages are also used to make gauge runs to ensure the casing size (ID) is clear. Tool Description Swages are made of 4140-grade heat-treated steel. The tool is shaped like an ice cream cone. The long tapered nose …
Use a casing roller when the casing is slightly collapsed. Casing rollers are light-duty tools. We recommend for you this article to read: Tool Description The CASING ROLLER is specifically designed for repairing casing and differs from any other repair tool intended for this application in that it does not include any small parts to …
Milling is the process of steel removal. Such milling may be mandatory in a lot of cases while drilling oil and gas wells after trials of fishing operations. It will also result in a removal of the steel obstruction in the wellbore and continue drilling to the well target. Milling Applications In Drilling: Milling is …
Die Collars (box taps) and taper taps fishing tools are two types of attachments that are used in fishing operations to screw into a fish. Die Collars have threads on the ID, which cut threads into the OD of the fish, externally engaging the pipe. Taper types are used to engage the inside of a …
In open hole well logging operations, well conditions are frequently such that the logging tools become stuck (pipe sticking guide), bridged over, or the line becomes keyseated (Drilling Keyseat) in the wall of the hole. When this happens, the wireline operator will feel anxious, and sometimes he may pull too much which will lead to …
Wireline parted in the hole can be retrieved with either a center prong rope fishing spear, double prong spear, or crank type spear. A typical bottom hole assembly used to fish for wireline would consist of the following components: In cased holes, always run a stop on top of the spear that is 1/8″ to …
The Lead Impression Block in oil and gas is designed to give an imprint of the top of a fish in the hole to help determine the condition and position of the top of the fish. The Impression Block can also be used to give clues on how to retrieve an unknown fish in the …
The side door overshot method is another option for freeing a stuck logging tool. In this method, the line is not cut and a rope socket overshot is not required. However, cut & thread fishing is typically the best option. Applications The Bowen Series 160 fishing overshot is only recommended for fishing in cased-hole environments …
The cable guide method or “cut and Thread” method is one technique for fishing stuck wireline (Check also: Sticking Pipe) and/or logging tools. Even though it is dangerous and time-consuming, the cable guide method is preferred over the side door overshot method as it is the surest method. This method is used for retrieving wireline …