Hejian Hengji Bit Manufacture Co.,Ltd is located in Hejian,Hebei province.and is Chinese bit industry's emerging enterprises.The company is mainly engaged in the development of various series of bits, development, production and sales.

Hengji company has developed and mass-produced products 3 inches to 26 inches series steel tooth bit and tricone bit, various types of PDC bits, core bit and production and processing assembly 0.6 m to 3 m large diameter drill bits.Widely used in the oil, natural gas, hydrology, address, ore drilling engineering, product marketing the country and 20 countries and regions in the world.

Hengji company keeps track of the international advanced technology, and built a flexible production line of CNC machining centers mainly drill bits, established a perfect quality assurance system, widely used in the production and management of computer application systems and control systems.

Hengji various drill bits, to ensure full compliance with all the terms and standards of the American Petroleum Institute API specification, design, manufacturing and production, and to ensure full compliance with the the API specification requirements and content.

"Hengji bit, focusing on quality" Hengji always follow with "high quality products and services users "philosophy, adhere to the leading design highlights the quality, state-of-the-art technology to promote quality, perfect management ensure quality. Hengji produced drill products continues to lead the domestic industry, expanding the international market, providing quality products to the worldwide drilling industry.

1.Please select the applicable formation and parameters according to the instructions.

2.Carefully check the bits appearance and to check the bits threaded end face,whether the serial number on the box and certificate.

3.Selection of WOB and RPM should be within the limits of the recommended parameters, higher WOB and RPM cannot be used simultaneously.

4.Bottom hole must be clean and bit must not be used for long section reaming.

5.Drilling process must operate smoothly, find that there is Bie jump on abnormal phenomenon, should be timely analysis and take effective measures

6.The bit should be kept indoor with dry and well ventilated conditions at 10-33℃ and kept from sunshine and rain. Stored under such conditions, quality of bit is guaranteed for 3 years.

Part lll.Operation Instructions on Hengji Tricone bit

1.Please select the applicable formation and parameters according to the instructions.

2.Selection of the appropriate nozzle according to the hydraulic parameters of the nozzle hole size differential is not too much to prevent erosion of the stream channel.

3.Before the bit running into the well, the user should carefully check the overall appearance and confirm that the serial number on the shank end is the same as those on the packing box and certificate.

4..The required bit operating procedures should be followed. After getting to the bottom hole, the bit must be running in slowly with lighter bit weight(WOB: 5-15KN, RPM: 60r/min) for 1/2 hour and then drilling ahead with normal WOB.

5.If abnormal damage(s) of the bit occurred, please contact the company and the packing box, inspection certificate, original performance records as well as the failure bit(with nozzles on ) should be kept for our view, or we are not responsible for it.