SU1571194A1

SU1571194A1 - Device for drilling horizontal boreholes

Info

Publication number: SU1571194A1
Application number: SU874350634A
Authority: SU
Inventors: Виктор Григорьевич Короленко; Федор Федорович Бондаренко; Георгий Григорьевич Аксенов; Юрий Аркадьевич Дубовцев
Original assignee: Научно-Исследовательский Горнорудный Институт
Priority date: 1987-12-28
Filing date: 1987-12-28
Publication date: 1990-06-15

Abstract

Изобретение относитс к горной промышленности и может быть использовано дл бурени горизонтальных или слабонаклонных скважин, в т.ч. спасательных эвакуационных в шахтных услови х. Цель - повышение надежности работы и уменьшение энергоемкости. Устройство включает цилиндрический корпус (К) 1 с режущей кромкой, расширитель 2, обсадную трубу 3, скрепленную с К 1, породоразрушающий инструмент 4, соединенный со шнековым ставом 5 с опережением относительно режущей кромки К 1, привод 6 става 5 и привод обсадной трубы. Передний конец К 1 выполнен в виде открытого вверх до диаметральной плоскости желоба 7. Расширитель 2 эксцентрично закреплен на верхней части К 1, выполнен в форме полукольца из штыревых скалывателей (С), сегментных пластин (П) и радиальных ребер. При этом П расположены между С и скреплены с ними. Ребра расположены между К 1 и С и скреплены с ними. Передние кромки С опережают передние кромки П. Передние кромки С и задние кромки П расположены над желобом 7. Передние кромки С выполнены с односторонними скосами, задние - с двусторонними, передние и задние кромки П - с односторонними скосами, а передние и задние кромки ребер - с двусторонними скосами. При работе привода 6 породоразрушающий инструмент 4 выбуривает опережающую скважину, далее ее расшир ют рабочие кромки желоба 7 и расширитель 2. Последний образует вверху скважины компенсационную полость, предотвращающую защемление трубы 3 и К 1 в скважине. 1 з.п. ф-лы, 3 ил.The invention relates to the mining industry and can be used for drilling horizontal or weakly inclined wells, incl. rescue evacuation in mining conditions. The goal is to increase reliability and reduce energy consumption. The device includes a cylindrical body (K) 1 with a cutting edge, an expander 2, a casing 3 bonded to K 1, a rock-breaking tool 4 connected to a screw rod 5 ahead of the cutting edge K 1, a drive 6 of the 5 and a casing drive. The front end of K 1 is designed as an upwardly open up to the diametral plane of the chute 7. The extender 2 is eccentrically fixed on the upper part of K 1, made in the form of a half-ring of pin cleavers (C), segment plates (P) and radial ribs. In this case, П are located between С and fastened with them. The ribs are located between K 1 and C and fastened with them. The front edges C are ahead of the front edges P. The front edges C and the rear edges P are located above chute 7. The front edges C are made with one-sided bevels, the rear edges are double-sided, the front and rear edges P are one-sided bevels, and the front and rear edges of the ribs are with double-sided bevels. When the drive 6 is in operation, the rock-breaking tool 4 drills the advance well, then it is expanded by the working edges of the chute 7 and the expander 2. The latter forms a compensation cavity at the top of the well, preventing pipe 3 and K 1 from being pinched in the well. 1 hp f-ly, 3 ill.

Description

99 10 10 1199 10 10 11

Фиг. 2FIG. 2

10ten

33

Фие.ЗFi.Z

5five

Claims

Claim

1. A device for drilling horizontal wells, including a cylindrical body with a cutting edge, a casing connected to the body, an expander mounted on the body, a screw stand placed in the body and in the casing, a rock cutting tool connected to the screw stand ahead of the cutting the edges of the housing, and the drives of the auger head and casing, characterized in that, in order to increase reliability and reduce energy consumption, the front end of the housing is made in the form of open up to the central plane of the gutter, and the expander is made in the form of a semi-ring attached eccentrically to the upper part of the body and consisting of pin cleavers with front and rear edges, segment plates with front and rear edges located between the cleavers and fastened with them, and ribs with front and rear the edges located between the body and the pin cleavers and fastened with them, while the front edges of the pin cleavers are ahead of the front edges of the segment plates, and Independent user interdigital cleavers edge and rear edge of the segment plates are arranged under the chute.

to

2. The device according to π. 1, characterized in that the front edges of the pin cleavers are made with one-sided bevels, and the rear with two-sided, while the front and rear edges of the segment plates are made with one-sided bevels, and the front and rear edges of the ribs with two-sided bevels.

9 9 10 10 11 8 1

FIG. 2 in id a