A double-sided human nanocoating particle capable of modulating drilling fluid rheology

Abstract

The invention discloses a double-sided nano-coating particle capable of adjusting the rheology of drilling fluid. The particle uses silicon dioxide micron particles as a matrix, and the outer side is sequentially covered with titanium (Ti)-nickel (Ni)-titanium with nanoscale thickness. (Ti) coating. The double-sided human nano-coating particles are polarized and added to the drilling fluid, and then the magnetic field is applied at different positions or the strength of the magnetic field is changed to use the double-sided human nano-coating particles to adjust the rheology of the drilling fluid. The non-chemical solvent of the present invention can be recovered and recycled, greatly reducing the cost of drilling fluid; the linear structure is different under different magnetic fields, which facilitates the adjustment of rheology, and the movement direction and speed of nano-coating particles are controllable; different positions give different magnetic field strengths, The rheology can be adjusted to realize the anisotropy of drilling fluid rheology, which has significant advantages compared with traditional chemical reagents.

Description

technical field [0001] The invention relates to a particle whose surface is incompletely covered with a nano-metal coating, which is used for adjusting the rheology of drilling fluid and belongs to the technical field of drilling materials. Background technique [0002] In the exploration and development of energy and deep geological drilling, the stability of the borehole wall cannot be separated from the drilling fluid. During drilling, large amounts of cuttings and debris are produced. Through the circulation of the drilling fluid, the cuttings broken by the drill bit are carried to the ground, keeping the wellbore clean, making tripping smooth, and ensuring that the drill bit always touches and breaks new formations at the bottom of the well without repeated cutting, realizing safe and fast drilling Enter. [0003] During this process, cuttings carrying and suspension, wellbore stability and hydraulic jet flow are all closely related to the rheology of drilling fluid. ...

AI Technical Summary

Problems solved by technology

Therefore, the consumption in the drilling process is huge, resulting in higher costs;

[0006] ②Chemical polymer materials will seep into the groundwater system during the drilling process, causing environmental pollution;

[0007] ③In the drilling fluid system with chemical additives, the viscosity and shear force of the drilling fluid at different positions are consistent, and the anisotropy of the rheological properties at different positions in the same solution cannot be realized

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