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Spiral Drill Collar

  • China China  
  • Last Updated:
    Posted on: 10 Nov 2024

Buyer Information

RFQ Details

Spiral Drill Collar


Spiral Drill Collar is used to reduce contact area with hole so as to avoid efficiently bit sticking from differential pressure. TIANHE brand spiral drill collars are manufactured strictly according to API Spec7-1 and Standard SY5144.

Technical specifications and parameters O.D. Cutting depth Lead +- 25.4
mm in A(mm) B(mm) mm
86 3 3/8 3.5 +- 0.79 679
98.4 3 7/8 4.0 +- 0.79 914
101.6~111.1 4~4 1/8 4.8 +- 0.79 914
114.3~130.2 4 1/2~5 1/8 5.6 +- 0.79 965
133.4~146.1 5 1/4~5 3/4 6.4 +- 0.79 1067
149.2~161.9 5 7/8~6 3/8 7.1 +- 1.59 1067
165.1~177.8 6 1/2~7 7.9 +- 1.59 1168
181.0~200.0 7 1/8~7 7/8 8.7 +- 1.59 5.6 +- 0.79 1626
203.2~225.4 8~8 7/8 9.5 +- 1.59 6.4 +- 0.79 1727
228.6~250.8 9~9 7/8 10.3 +- 2.37 7.1 +- 1.59 1829
254.0~276.2 10~10 7/8 11.1 +- 2.37 7.9 +- 1.59 1930
279.4 11 11.9 +- 2.37 8.7 +- 1.59 2032
All technical specifications and parameters only provides for reference.


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