What are the uses of drilling fluid under the introduction of geological drill pipe?

Classification:

Company News

Release time:

2019-08-16

【Summary Description】 What are the uses of drilling fluid under the introduction of geological drill pipe?

地质钻杆

geological drill pipedrilling fluidCarrying function: when the drilling fluid circulates, it carries the rock cuttings broken by the drill bit at the bottom of the well to the ground through its own circulation, so as to keep the well hole clean, make the tripping unimpeded, and ensure that the drill bit always contacts and breaks the new formation at the bottom of the well without causing repeated cutting, thus maintaining safe and rapid drilling.

geological drill pipedrilling fluidSuspension function: when single drilling is connected, tripping or circulation is stopped for some reason, the drilling fluid depends on its viscosity and shear force to suspend the drilling cuttings in the drilling fluid, so that the drilling cuttings will not sink quickly, so as to prevent the occurrence of complicated situations such as sand sinking and sticking.

Stabilizing shaft wall:

1.Select the appropriate drilling fluid density to produce sufficient supporting force on the borehole wall, so as to prevent the occurrence of downhole complex conditions such as well collapse.

2.The drilling fluid has good filtration wall building performance.geological drill pipedrilling fluidA thin and tough mud cake is formed on the borehole wall to stabilize the drilled formation and prevent the liquid phase from invading the formation, thus weakening the degree of hydration expansion and dispersion of shale.

3.The drilling fluid has a good inhibitory effect and weakens the degree of hydration expansion and dispersion of shale.

地质钻杆

Key words:

weilida drill