The paper discussed the technique of wall protection with slurry in deep-hole drilling in complicated formation with deep-hole drilling problems in recent years,and presented the test application of PHP mud and LBM mud,which could be the ref.

Numerical Simulation of Flow Around an Oscillating Cylinder Using Lattice Boltzmann Method;

A new method for boundary condition in Lattice Boltzmann Method

Regeneration preparation and dumping treatment of drilling mud for mine shaft drilling;

A series of drilling mud invasion experiments were conducted on Bentheimer sandstone cores to investigate the dynamic filtration and the compatibility of NaCl muds with a hydrocarbon bearing formation in two phase flow.

To solve the problem in the well caused by the stopping of drilling mud at the time of connection,the continuous circulation drilling technology was developed initially in U.

Biodegradation of pyridine in the slurry system;

Character of boring slurry in pozzuolana sediment area;

The functions of slurry in cast-in-place bored pile construction;

Examination and investigation of drilling mud for the strata that always sop in water in diggings in Anhui province;

The purge and utility of mud in drilling cast-in-place pile;

The role lecithin plays in improving slip properties is studied.

The dilution of porcelain clay containing montmorillonite slip is studied using six diluents.

The montmorillonite clay slip and montmorillonite clay with NCMC slip were also analyzed by FT-IR,XRD and TEM.