What is the Function of Drill Bit?

The popular types of drill bits are Drag bits, Tricone bits, and PDC bits.

1. Drag bit

Drag bit price is cheaper than Tricone bits and PDC bits, in some shallow water well drilling with soft formation, customers will choose drag bits, it is most economical.

2. Tricone bit

Tricone bits also named Roller cone bits, now are the most widely used bits, mainly because different bit design parameters (including tooth height, tooth pitch, tooth width, wheelbase shift, cone placement, etc.) can be changed to suit the needs of different formations. It popular used for Horizontal directional drilling as pilot bits ,Oil and Gas , Geothermal well drilling. Great manufacture metal seal tricone bits can be used for oil and gas in deep well drilling and high temperature well.

3. PDC bits

With the development of the market, the application of PDC bit is more and more widespread, more customers pay attention to efficient work, because now the labor cost, equipment cost continues to increase, daily cost consumption is in a continuous growth trend, which makes more customers choose PDC bit.  Therefore, PDC bit selection is particularly important, suitable for homogeneous layers. If you want to choose a suitable PDC bit, you can contact GREAT to provide customized service.

What Are Drill Bits Made out Of?

PDC drill bits including Matrix body and Steel body base on the raw material different.

Matrix body bit made by Matrix powder, strictly quality control in the process.

Steel body pdc drill bits made by AISI4145H steel and heat treatment, with advanced CNC machines process and strict quality control until finish bit.

The main parts that influence the quality of the bits are bit body and PDC cutters.

GREAT now cooperated with famous PDC cutters manufacture which customized the performance in wear resistance and impacts resistance to achieve a good result.

What Are the Strongest Drill Bits?

The strongest drill bits should be based on types. We manufacture PDC bits and tricone bits from soft formation to hard formation. Such as PDC bits, you will choose blades from 3-9, the more blades used for the more hard formation. However, the tricone bit will be based on the IADC Code. The first number of IADC codes is bigger, then the bits can be used for the harder formation , such as 637,737,837 for very high abrasive and hard formation.

How to Drill a Hole in a Rock?

The rotary power of the bit during drilling comes from two parts:

1. Torque transmitted by the turntable;

2. Torque provided by downhole hydraulic drilling tools (downhole motor). Most of the weight of the drill is on the hook, A little of it is on the bit. This weight is called weight on bit. In addition to the mechanical rock breaking of the bit, there is also the hydraulic rock breaking effect caused by the high-speed jet of drilling fluid formed at the water hole of the bit under high pressure.

Drilling fluid is called drilling blood. It carries cuttings, transmits hydraulic power, cools drilling tools, and creates mud cakes on the borehole walls to reduce friction. Therefore, good drilling fluid can greatly improve drilling speed and reduce the incidence of downhole accidents.

Most importantly, each type of drill bit (PDC bits and Tricone bits) has a maximum torque, which is generally not exceeded during normal drilling.

How Does an Oil Rig Drill Bit Work?

In the use of drill bits in oil drilling operations, not all geological environments can give full play to the maximum use effect, and in the specific use process, different petroleum drill bits types need to be selected for different geological environments.  Specifically, the main factors are the lithology of the formation and the hardness of the formation. GREAT can provide customized design according to need. Contact us now！