SU1247500A1 - Single-roller drilling bit - Google Patents

Description

one

The invention relates to the drilling of oil and gas wells with coring.

The purpose of the invention is to increase the efficiency of the process of core formation.

Figure 1 shows a drill head, a slit; FIG. 2 is a view A in FIG. 1, the arrangement of the additional core-forming elements and the pocket; in FIG. 3, view B in FIG., the location of the pocket in the pin and the position of its reflecting plane, 10 B.

A single spindle boring head consists of body 1 with a pin and a core receiving channel. The spherical roller 2 is mounted on the trunnion by means of bearings 3 and 4, so that the center of the sphere is located at the point of intersection of the axle of the trunnion with the axis of the burgher head. There is a drill in the trunnion of the burgolovka for placement of the locking pin 5 with a pin 6. Butt of the trunnion arm. The roller cutter is made in the form of a sphere truncated from two sides. The outer surface of the roller cutter is reinforced with teeth 8 and 9.

The operation of the drill head is carried out as follows.

When rotating under load, the roller cutter forms a ring face. At the same time, the teeth 9 form a core in the form of a polyhedron, with further deepening of the burster (2-3 mm), the faces of the core are smoothed to the required diameter by the teeth 7. Due to the center of the spherical roller cone on the well axis, it is slowed down when it is working at the bottom. Approaching a hollow pin to the face allows the core to be taken into the chisel immediately after its formation, which favorably affects the safety of the core. In the presence of small metal objects on the face, as well as a chipped

Mounted by additional core-forming jo joints of a chunk, they will

elements 7 and has a recess (car-hold and accumulate in your pocket,

man) B. The teeth 7 are placed diametrically-made in the trunnion, which will contribute, in contrast to the core-forming, to preserve the rest of the weapons from

cops cones in their extreme lower wear and tear.

Vida

lying. The roller cutter is made in the form of a sphere truncated from two sides. The outer surface of the roller cutter is reinforced with teeth 8 and 9.

The operation of the drill head is carried out as follows.

When rotating under load, the roller cutter forms a ring face. At the same time, the teeth 9 form a core in the form of a polyhedron, with further deepening of the burster (2-3 mm), the faces of the core are smoothed to the required diameter by the teeth 7. Due to the center of the spherical roller cone on the well axis, it is slowed down when it is working at the bottom. Approaching a hollow pin to the face allows the core to be taken into the chisel immediately after its formation, which favorably affects the safety of the core. In the presence of small metal objects on the face, as well as a chipped

  dropping out of any chuck, they will

Type B

AT

FIG. 2

+

fig.Z

Claims (1)

SINGLE-TORCH DRILLING HEAD, comprising a body, a trunnion with a core receiving channel, placed obliquely relative to the axis of the body, and a spherical roller cone with rock cutting and core-forming elements mounted on the trunnion, characterized in that, in order to increase the efficiency of the core formation process, the trunnion end face is reinforced with additional core grafts diametrically opposite to the core-forming elements of the cone in their extreme lower position, in the lower part of the journal from the side of the end an, the vertical plane of which has a bevel in the direction of movement of the core-forming elements of the cone, the latter being ahead of the core-forming elements of the end face of the pin. I A FIG. 1 SU „, 1247500