Spiral klsv calibrator is a unique tool designed for efficient destruction of high-strength rocks while drilling wells. This tool is located directly in the open hole of the drilled hole above the bit.
Purpose of calibrators
With the help of special calibrators, adjustments of the compressed wellbore and centering are carried out. For the purpose of centering, a spiral type of calibrator is used.
By making the necessary adjustments and centering, it is possible to achieve a significant increase in bit performance when performing measures for the destruction of hard and medium-strength rocks. Spiral calibrators are indispensable when you need to punch wells to obtain water.
Design features of calibrators
The design of each calibrator provides for the presence of blades of the centering part, which can be spiral or ordinary straight. In places where the wellbore is in close contact with the calibrator, there are unique teeth made from a hard and durable material, which is most often metals with an admixture of tungsten cabride. At the request of the customer, the optimal parameter of the blades is determined. The type and quantity also depends on the client's requirement.
Calibrator classification:
1) The first type is roller cone calibrators, which are characterized by a significant advantage over blade calibrators in the form of effective cooling, more efficient passage in the wellbore, as well as an increased reserve of weapons. Roller-cone calibrators have the peculiarity of a small moment of resistance to movement. However, in addition to the advantages, there are disadvantages of the following nature - insufficient strength of the cones' bearings.
2) Vane calibrators have the property of slow cooling and poorer wellbore penetration;
3) The next variety is solid mill calibrators made in Japan.
