In order to solve the problems as high mud density and low penetration rate as well as difficulty in treating mud, meeting with in drilling at the area with abnormally high pressure, this paper puts forward a new method for treating heavy mud by use of compound ion-type polymer.

A comprehensive indoor experiment and application at well-site were done for the compound ion polymer drilling fluid.

A new lead-free piezoelectric ceramics of Bi1/2Na1/2Ti1–x(Zn1/3Nb2/3)xO3(abbreviate as BNTZN—100x) were prepared by the two-steps synthesized method and the effect of B-site the complex ions-(Zn1/3Nb2/3)4+ substitution amount on the piezoelectric and dielectric properties was investigated.

A new kind of lead-free piezoelectric ceramics of Na1/2Bi1/2Ti1-x(Ni1/3Nb2/3)xO3 is prepared by the two-step synthesis method and the effect of the B-site complex ions substitution on the piezoelectric and dielectric properties is investigated.

A new lead-free piezoelectric ceramics of Bi1/2Na1/2Ti1-x(Mg1/3Nb2/3)xO3 was prepared by the two-step synthesize method and the effect of B-site the complex ions substitution on the piezoelectric and dielectric properties was investigated.