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API well drilling head IADC117 4 5/8 inches (117.5mm) for rig

Product Description

In the drilling process, the drill bit is the main tool to break the rock and the wellbore is formed by the drill bit breaking the rock. How well a wellbore is formed and the length of time it takes are not only related to the characteristics of the rock in the drilled formation and the performance of the drill bit itself, but also to the degree of mutual matching between the drill bit and the formation. Reasonable selection of drill bits plays an important role in increasing the drilling speed and reducing the overall cost of drilling.
The drill bit is one of the important tools for oil drilling work. Whether the drill bit adapts to the rock properties and its quality plays a very important role in the selection of drilling technology, especially in terms of drilling quality, drilling speed and drilling cost.

Product Specification

 

Basical Specification

Size of Rock Bit

4 5/8"

118 mm

Bit Type

Steel Tooth Tricone Bit/ Milled tooth Tricone Bit

Thread Connection

2 7/8 API REG PIN

IADC Code

IADC 117

Bearing Type

Journal Sealed Roller Bearing

Bearing Seal

Rubber Seal

Heel Protection

Anvailable

Shirttail Protection

Available

Circulation Type

Mud Circulation

Drilling Condition

Rotary drilling,high temp drilling,deep drilling,motor drilling

Nozzles

Central Jet Hole

Operating Parameters

WOB (Weight On Bit)

9,280-19,888lbs

41.3-89KN

RPM(r/min)

60~180

Formation

Very soft formations with low compressive strength and high drillability,such as clay,mudstone,chalk,etc.