SU64033A1 - Device for directional drilling - Google Patents

Description

Drilling from the horizon.-Eh. wells represent one of very difficult tasks. Especially difficult: it is drilling from the surface of wells (or close to horizontal) wells along the formation to connect the bottom of two vertical or inclined wells ...

For this purpose, it was already suggested that the device Halis1 with devices from WIOHHIOU; HN (a drill in the required direction. However, these devices have the disadvantage that the deviation of a new device is not controllable from the surface.

In order to eliminate this drawback, in accordance with the present invention, it is proposed to use a deflecting device to form a pipe, bent like a bend and embracing a drill. This pipe is hingedly connected to the column pipe and can be rotated by the action of levers controlled by said column pipe.

In FIG. 1 shows a general view of the device, FIG. 2 shows the construction of a screw; FIG. 3 shows a section along ab-b in FIG. 2, FIG. 4 shows a section along C - D in FIG. 3,

FIG. 5 and 6, a guide tube in two projections.

Drill, the pipes in the lower part “are hinged. United Me) | {doom, sneaky. Side-drilling augers consist of individual links, which are connected between the muffins by the Hooke hinges. Each link | consists of a rod G with screw blades 2 and forks 3 on each; 1, ohm end. //

The pins of each plug 3 are inserted on the sleeves 4 into a split ring consisting of two halves 5 and 6, which are fastened with viits 7.i:

The joint thus assembled is protected from dust by a rubber sheath 8 fixed on two adjacent rods with copper or aluminum wire. One end of the screw is connected to the drill pipe 11; at the other end of it, the jab-wrists spiral D1.1loto 9.

In order to guide the screw into the other side, the guide tube 10 is used, it is lowered into the well on the drill string of the tube 12 and bent in the shape of a bend. The pipe 10 can rotate on axis 13, passed through the cheeks 16 and 16, welded respectively to the drill pipe 12 and the guide pipe 10. At a distance, “April meter, 990 mm from the end, a ring 19 is welded to the column 12 14, which with its other end rests on the movable sleeve 15. On the sleeve there are cutouts for placing the heads of the levers 17, which are connected to the other end through the fingers 18 with the cheeks 16 of the pipe 10; from falling out, the levers are kept welded to the coupling by an overlay and by means of a pin 18 passed through a pin 18.

Lateral drilling is done as follows.

The guide pipe 10, hanging on the drill string of the pipe 12, is oriented down the well to the desired horizon and stops there. Then in the drill string of pipe 12 on the pipe I goes down the screw with a bit 9, which, abutting the wall of the well when the rod is rotated, starts to be drilled.

Simultaneously with the drilling and lowering of the screw, the pipe 10 is also lowered. Direction of the cutout channel, on the one hand, and the action of the spring 14, on the other, the pipe 10 completely fits into the borehole wall.

After placing the pipe 10 in the proper position, the expander rises to the surface and

is replaced with a spiral chisel. Then the projectile with the screw is lowered back into the squalse.

Directed in this way, the device begins to drill a well in a given direction. The drilled angle is fed in the opposite direction and poured out through the holes in the pipe 10 into the sump.

Since each link moves forward in rotation, the whole auger as a whole will automatically move in the direction of the bottom, as a result of which the external pressure on the face should be insignificant; nym, and the reason for withdrawal of individual links to the side disappears. In addition, the walls of the well itself serve as a good guideline for the 1st; auger screw.

Subject invention

A device for directional drilling with a deflecting device, characterized in that a pipe 10 curved in the form of a knee is used as a deflecting drill device, encompassing hinges connected with drill on the drill pipes and connected to a string of pipes 12, with hinges its rotation under the influence of levers 17, controlled by the specified column pipes.

V --s:

„Vs 64033

 2 -

FIG. one

:; cN

,

i S: "

t

CO