Difference between coarse and finecoffee

HI, i am asking about slip velocity , in order to perform good hole cleaning should i calculate the slip velocity or only i should calculate the annulus velocity which is enough to let me perform good hole cleaning & cutting lifting out of hole.

Cutting slip velocity is velocity of cutting that naturally falls down due to its density. In order to effectively clean the hole, effect of mud flow upward direction and mud properties must be greater than cutting slip velocity (settling tendency of cuttings). Otherwise, cutting will fall down and create cutting bed.

What's thedifference betweencoarse''and fineon a knife sharpener

The Prokura team keep records of all our product technical data sheets, please contact us today to discuss this further.

This calculation will show annular velocity, cutting slip velocity and net velocity so you can use as a reference for you hole cleaning indication.

It is important to calculate cut slip velocity, because it is variable of depth, bit type, instrument rotation, formation texture etc.

Example: Please use the following information to determine annular velocity, cutting slip velocity, net rise velocity, and tell us if the flow rate is good for hole cleaning.

Difference between coarse and finereddit

The difference between fine and coarse thread fasteners is the thread pitch. Fasteners and threaded rods that have a coarse thread have a larger pitch, (fewer threads per axial distance). Most commonly you’ll be using a coarse-threaded fastener than its fine-thread counterpart. Did you know fine-threaded fasteners are more difficult to find than coarse threads? Fine-threaded fasteners should be the type you choose when dealing with specific measurements.

Conclusion: This flow rate is GOOD for hole cleaning practice because annular velocity is more than cutting slip velocity.

The question still remains on your use case. If you have a bespoke, highly precise requirement or a project which needs a stronger tensile strength – then fine-threaded fasteners would be the best choice for you. Otherwise, for availability and a cost-effective solution, a coarse-threaded fastener should be sufficient. We would always advise that you research and know the product specification of the fastener you’re using and the required tensile strength. Otherwise, you risk failure.