Temp controlled thermally expansive packer

Application Number: 00107852
Application Date: 2000.06.27
Publication Number: 1330205
Publication Date: 2002.01.09
Priority Information:
International: E21B33/126
Applicant(s) Name: Kan Hongzhuan
Inventor(s) Name: Kan Hongzhuan
Patent Agency Code: 00000
Patent Agent:
Abstract A temp controlled thermally expansive packer used for oil field features that its sealed power unit is composed of expanding reaction cylinder and rubber drum. The reaction of filler in said expanding reaction cylinder can generate expanding poewer to expand said rubber drum, resulting in good sealing action. Its advantages are simple manufacture, high sealing reliability and convenient unsealing.