SU662711A1 - Reamer for drilling horizontal holes - Google Patents

Description

(54) EXTENSIONER FOR DRILLING HORIZONTAL

WELLS -::; ..-,,,

The shaft 12 of the screw 1 rotates on the bearings 3 installed in the bores of the stud 14 and the front cover 15 of the cutting member 2. The axial force of the screw 1 is sensed by the ugorny bearing 16. The axial direction of the screw 1 is held by the shim 17 and the nut 18 screwed on the end of the shaft 12 of the screw 1.

A drive gear 9 is rigidly seated on the shaft 12 of the screw 1, which engages with the circumferential gears 10 mounted with bearings 19 10 on axles 20. The axes 20 are rigidly fixed in the hub 14 and the front flap 15 of the cutting body 2. The hub 14 The axles 20 and the front cover 15 form a carrier rigidly connected to the cutting member 2.

A gear ring 11 is mounted inside the hub 21 of the guide cylinder 7, which engages with the circumferential gears 10.

Along the outer surface of the hub 14, the bearing cylinder 22 is mounted on the bearing 22. The axial force of the guide cylinder 7 is perceived by the thrust BY BEARING 23. Since the guide cylinder 7 is held by turning the well 7, the gear ring And during operation, the expander is a fixed element.

The reflector 5 is made in the form of a truncated cone and rigidly fixed in the front cover 15 of the cutting member 2. During operation 30, the reflector 5 rotates together with the cutting member 2. Along the outer surface of the reflector 5, longitudinal partitions 24 are welded to prevent the crumbling of the destroyed soil back into the lower part of the bottomhole when rolling the soil along the inclined surface of the reflector 5. Moreover, the partitions 24 are placed on the reflector 5 so that the fender blades 4 remain in the middle between two adjacent partitions.40

Along the perimeter of the body of the cutting body 2, the cutting teeth 3 are installed, which have a certain angle of inclination to the face. Fender blades 4 secured on the inner surface of the body of the cutting body 2 are removed to remove the broken soil from the destruction zone and feed it to the screw 1. At the front of the fender blade 4 with HStoiOHOM, cutting blades 6 are fixed to the side of the screw, destroying the rear sight, JQ originally formed drilled well and teeth 3.

Shank 25 serves to connect; a spreader with a screw stab of a bucoline maczine (not shown in the drawing).

Expander for drilling horizontal wells works as follows.

After the pioneer well is drilled upstream with the help of a brush-type machine and the working organ is released into the receiving pit, the working organ is removed from the screw stand. The shaft 12 of the screw 1 of the scraper shank 25 is attached to the screw rod, and part of the screw 1 is inserted into the well, after which the screw screw is screwed into rotation with the feed in the opposite direction.

Together with the screw 1, the gear 9 rotates rigidly mounted on the shaft 12, while the gear 10 "starts to run around the fixed gear ring 11 and thereby causes the cutting member 2 to rotate. Due to the presence of the planetary gear, the rotation speed of the screw 1 is greater than the rotation speed of the cutting member 2 .

The cutting of the ground is carried out by the teeth 3 located along the perimeter of the cutting body 2, and the remaining part of the ground is destroyed by the cutting knives 6 mounted on the fender blades x 4. The destroyed ground fills the pockets formed by the body of the cutting body 2 and the fender blades as the cutting rotates Body 2 rises up and under the action of its own weight falls on the reflector 5 and fio of its inclined surface rolls into the zone of operation of the screw 1, and from there it is transported to the wellhead by the screw and screw auger.

Claims (2)

1. Author's certificate No. 443969, class E 21 C 13/00; E 21 C 17/00, 1972. 2. Certificate of author No. 284931, cl. E 21 C 17/00, 1969.