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GST Milling Shoe Features: ▲ Unique engineering designing and special fabrication with welding technology ▲ Long run life and high efficiency ▲ Various types and sizes milling shoes available | ![]() |
Rotatory Scrapping Tool
This tool is sepcially designed for cleaning casing while drilling out cement plugs.

Features:
▲ Scraping casing with no damage to the casing
▲ Self-cleaning
▲ One trip for both cement drilling and casing scraping
Data sheet
Type | 5 | 51/2 | 7 | 7-7/8 | 9.5/8 |
OD (in) | 4-5/16 | 4-7/8 | 6-1/4 | 7-1/8 | 8-11/16 |
ID (in) | 29/32 | 1-1/4 | 1-1/2 | 1-1/2 | 2-1/4 |
IDofDC (in) | 4-1/8-4-1/4 | 4-11/16-4-3/4 | 6-1/8-6-1/4 | 7 | 8-13/32-8-3/4 |
Length (ft) | 4-1/2 | 6-1/8 | 6-1/4 | 6-1/8 | 8-1/4 |
Connection | 2-3/8 IF | 2-3/8 IF | NC35 | 3-1/2 IF | 4-1/2 IF |
Bi-Directional Reaming Tool
This downhole tool is designed to be run with drilling string to smooth a well bore, remove cuttings to minimize pipe-stuck risks, and reduce reaming time to save drilling cost.

Features:
▲ Bi-directional multiple round blades with cutters to improve the reaming efficiency
▲ Big flow area to increase the capability of cuttings removal
▲ Reduce drilling string frictional force and minimize drill pipe sticking risks
▲ High-grade steel for greater reliability
Specification | DHT-165 | DHT-172 | DHT-216 | DHT-241 | DHT-311 | DHT-333 |
ID | 57.2 | 57.2 | 71.4 | 71.4 | 71.4 | 71.4 |
Length | 4.75 | 4.75 | 4.75 | 4.75 | 4.75 | 4.95 |
Connection | NC38 | NC38 | NC50 | NC50 | NC50 | 65/8 REG |
Connection (KN.m) | 15.6 | 15.6 | 40.7 | 40.7 | 55.8 | 55.8 |
Max. Troque (KN.m) | 35 | 35 | 78 | 78 | 96 | 96 |
Mas. Tensile strength (KN) | 1690 | 1690 | 2460 | 2460 | 2720 | 2720 |
Phone: +86-28-83973858
Tel: +86-28-83973858
Email: sales@grandoiltech.com