11 5/8" FA137 , Rock Bit, Oil Well Drilling , Gas Well Drilling , Tooth Bit

RECOMMENDED DRILLING PARAMETERS FOR APPLICATION

Bearing and seal system:

Sealed roller/journal bearing structure with rollers arraged in grooves recessed in cone body and bigger bearing journal can be better adopted with high WOB and hing RPM

Premium HNBR O-ring with optical seal compression and curved seal structure as well as advanced special grease can limit presure differential and prevent drilling fluid from entering the lubrication system and thus strongly assure the lubrication of the bearing.

Applicable formation:

Very soft to medium soft formation with low compressive strength and high drillability, such as mudstone,loose sands, soft limestone, shale layer

Hejian City Feilong Retop Rock Bit Manufacture Co., Ltd. is established in 1992 and located in Hebei Province, China. Integrated with Beijing Feilong International Trade Co., Ltd. and Beijing Superior Drilling Equipment Co., Ltd. , the company has involved into a comprehensive enterprise integrating production, R&D and distribution of tricone bits, PDC bits, trenchless and rotary drilling tools.

The company serves the customers in oil & gas drilling, mining, exploration, HDD drilling and rotary drilling with covering a complete product line.

The company covers an area of 36,000 square meter and has more than 200 employees, including more than 100 technicians. The company has equipped with contemporary advanced processing equipment of processing and detecting and testing instruments. The company has obtained the certification of the quality system: ISO 9001, ISO 14001, OHSAS 18001 and mostly important API 7-1.

The company’s annual production of various drilling tools is over 10,000 sets, which exported to over 20 countries and regions. We, FeiLong ReTop ( FLRT ) are willing to cooperate with friends at home and abroad to make joint development and contribute to global energy development and urban infrastructure development.