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 …
When the mud is in a static condition, the rheological properties should prevent solids (weighting material and drilled formation solids) from settling. The relevant property in this respect is the mud’s gel strength. The drilling mud gel strength is caused by the interactive forces between colloids (e.g., clay particles), polymer radicals, or emulsion droplets in …
In general, whatever job you perform on the drilling rig, you will need to know how the drilling process is managed, supervised, and completed. Who is in charge? And who can permit the stopping of operations? Who can authorize you to visit the rig floor (Check also Drilling Rig Components)? What is the drilling rig …
Most formation solids can be removed by mechanical means at the surface as shale shaker screens. Small particles are more difficult to remove and have a greater effect on drilling fluid properties than large particles. The particle size of drilled solids incorporated into drilling fluid can range from 1 to 250 microns (1 micron equals …
Drilling rigs (check also: drilling rig components) In oil and gas are classified according to field operations into two major types (land rigs and offshore rigs) which in turn are reclassified into other types depending on each rig capability and working environment. Accordingly, rig type can be one of the followings: Land rigs Land rigs …
When encountering losses, the priority is to determine the type of mud losses which will help you choose the suitable size and material for bridging or plugging material for the loss zone. Below is how to differentiate between them: Bridging Material Mechanism In Formation Structure Losses If losses are into the formation structure then our …
The shale shakers are the first mechanical treatment of the returning drilling fluid for solids control. None of the other mechanical devices can cope with solids control without the pre-treatment of the mud in the shale shaker. A shale shaker or vibration screen is a spring-mounted screen. The vibration of the such screen is by …
Shale Shaker performance Design is a function of: The impact of each is discussed in detail in the previous article (please check the link for each article). Guidelines for shaker and screen selection are also provided. Vibration Patterns Design For Shale Shaker Shale shakers are classified in part of the vibration pattern made by the …
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 …