Technical Advantages

The piston support head adopts three new technologies and new processes to improve the sealing performance, wear resistance and overall life

The piston support head can work normally when the eye pressure drop of the drill bit is not less than 3-5Mpa, and it can be retracted when the pump is stopped.

After the support head is worn, it can be repaired and used

Technology Introduction

The product has the characteristics of reliable sealing and good wear resistance; it is suitable for inclined well drilling and well sections that are prone to sticking. It prevents the stabilizer in the directional well bore from encountering resistance and jamming accidents, and improves the rate of deviation.

Designed and produced according to API Spec 7-1 standard.

Parameter

Model: ZBW152 ZBW158 ZBW165 ZBW215 ZBW233 ZBW307

Temperature level: -29 ～ 21 ℃ P, U

Material grade: EE

Specification level: PSL3

Performance level: PR1

Applicable borehole (mm): 152.40 158.75 165.10 215.9 233.70 307.98

Body diameter (mm): φ145 φ150 φ155 φ204 222 305

Reducing diameter (mm): φ152 φ158 φ165 φ214 231 305

Centralized length (mm): 630 630 630 650 900 900

Total length (mm): 1100 1100 1100 1350 1500 1500