Part l.Brief introduction
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. Henderson produced drill products continues to lead the domestic industry, expanding the international market, providing quality products to the worldwide drilling industry.
Part ll.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.
Part lll.Rubber sealing tungsten carbide insert bit Recommended Parameter and Formation
IADC | Recommended Parameter | Formation | |
WOB KN/mm (bit dia.) | RPM(r/min) | ||
417\427 | 0.3~0.9 | 150~70 | Very soft low compressive strength and high drillability,such as clay,soft mudstone,shale,salt,loose sands,etc. |
437\447 | 0.35~0.9 | 150~70 | Very soft low compressive strength and high drillability,such as clay,soft mudstone,shale,salt,loose sands,etc. |
515\525 | 0.35~0.9 | 180~60 | Very soft with low compressive strength and high drillability,such as mudstone,salt,soft limestone,sands,etc. |
517\527 | 0.35~1.0 | 140~50 | Very soft with low compressive strength and high drillability,such as mudstone,salt,soft limestone,sands,etc. |
535\545 | 0.35~1.0 | 150~60 | Medium soft with harder,more abrasive streaks,such as hard shale,mudstone,soft limestone,etc. |
537\547 | 0.4~1.0 | 120~40 | Medium soft with harder,more abrasive streaks,such as hard shale,mudstone,soft limestone,etc. |
617\627 | 0.45~1.1 | 90~50 | Medium hard with higher compressive strength as well as thick and hard streaks,such as hard shale,sands,limestone,dolomite,etc. |
637 | 0.5~1.2 | 80~40 | Medium hard with higher compressive strength as well as thick and hard streaks,such as hard shale,sands,limestone,dolomite,etc. |
737 | 0.7~1.2 | 70~40 | Hard with high abrasiveness such as hard limestone,dolomite,firm sands,etc. |
827\837 | 0.7~1.2 | 70~40 | Very hard with high abrasiveness,such as quartzite,quartzitic sand,chert,basalt,granite,etc. |
Note:Do not use the maximum WOB and maximum RPM at same time!
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All sizes and IADC codes of drill bits are available. Special requirements of different models can be customized.
