TK908DH is the first dual branch horizontal well in Tahe
Oilfield. It is the deepest in vertical depth in China. Main hole
adopted two stage cementing technology ,ensuring the cement job
quality and providing the condition of successful construction for
branch horizontal section. The cement job quality is achieved to
standard , bearing leakproofness in first and second branch hole
cross is ensured , by adopting pegged liner hanger in branch
horizontal section and cementing technology on the top of screen
pipe.Well completion technology is achieved to 4 grade of TAML
classification. The cementing technology offers valuable
experience for deep branch horizontal well cement job.