SU927949A2

SU927949A2 - Apparatus for indexing the hole-bottom engine

Info

Publication number: SU927949A2
Application number: SU802912029A
Authority: SU
Inventors: Олег Юзефович Бергштейн; Марк Андреевич Великосельский; Марат Иванович Ворожбитов; Эдуард Григорьевич Поддубный
Original assignee: За витель и ВеликосельскиЙ, М.И. ВорржбиТОн З.Г. Поддубный -.;
Priority date: 1980-04-18
Filing date: 1980-04-18
Publication date: 1982-05-15

Description

(5) УСТРОЙСТВО ДЛЯ ОРИЕНТИРОВАНИЯ ЗАБОЙНОГО ДВИГАТЕЛЯ(5) DEVICE FOR ORIENTING A WAYING ENGINE

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Изобретение относитс к технике, а именно к устройствам, oбecпeчивaю щим бурение направленных -скважин.The invention relates to technology, namely to devices that protect the drilling of directional wells.

По основному авт. св. № 6А8710 известно устройство дл ориентировани забойного двигател , включающее вал и установленную на нем с возможностью вращени эксцентричную втулку с лопаст ми, расположенными по винтовым лини м с левым и правым заходами , причем винтовые лопасти с правым и левым заходами расположены по всей поверхности втулки tl3.According to the main author. St. No. 6A8710, a device for orienting a downhole motor is known, including a shaft and an eccentric bushing mounted on it with blades located along helical lines with left and right approaches, the screw blades with right and left approaches located across the entire surface of sleeve tl3.

Однако при работе указанного устройства в скважине из-за увеличенного наружного диаметра эксцентричной втулки с лопаст ми возникают его зависани при спуске и подклинке при подъеме, что снижает надежность безаварийного ведени буровых работ.However, during operation of the device in the well, due to the increased outer diameter of the eccentric bushing with blades, it hangs during descent and under crest during ascent, which reduces the reliability of trouble-free drilling operations.

Целью изобретени вл етс повышение надежности работы устройства за счет устранени возможности подклинки устройства при подъеме.The aim of the invention is to improve the reliability of the device by eliminating the possibility of the device pinching during lifting.

Эта цель достигаетс тем, что эксцентрична втулка в нижней части выполнена с конусной расточкой, а вал - с ответной ей поверхностью.This goal is achieved by the fact that the eccentric sleeve in the lower part is made with a tapered bore, and the shaft with a mating surface.

На фиг. 1 схематически показано устройство дл ориентировани забойного двигател ; на фиг. 2 - разрез А-А на фиг, 1; на фиг. 3 развертка расположени лопастей на втулке, вид Б на фиг. 1.FIG. 1 shows schematically a device for orienting a downhole motor; in fig. 2 is a section A-A in FIG. 1; in fig. 3 is a sweep of the location of the blades on the sleeve, view B in FIG. one.

10ten

Устройство дл ориентировани забойного двигател включает долото 1, забойный двигатель 2, втулку 3 и бурильные трубы Ц, Втулка 3 посажена на подшипниках 5 с возможностью The device for orienting the downhole motor includes a chisel 1, a downhole motor 2, a sleeve 3 and drill pipes C, the sleeve 3 is seated on bearings 5 with the possibility

Claims

15 is axially displaced and has a tapered bore for engagement with a shaft 6 having a surface which has a counter cone bore bore. The entire outer surface of the sleeve is equipped with screws 20 with protrusions from one side having the right side and, on the other, the left direction (Fig. 3). These protrusions start from one forming sleeves and have a variable height increasing to the top. This embodiment of the protrusions allows their outer surface to have an offset relative to the axis of rotation of the sleeve (Fig. 2). The sleeve 2 is installed in the upper part of the arrangement above the downhole motor. The device works as follows. 3, due to the contact of the screw lugs with the barrel, the sleeve is oriented constantly to the bottom wall of the well with an eccentric suit and is in the upper position on the shaft. This position of the sleeve leads to the movement of the upper part of the bottom-hole string assembly to the upper wall of the wellbore and thereby creating a bit skewing in the plane of the curvature of the wellbore in the direction opposite to the curvature, which reduces the angle of inclination of the well. When lifting the tool, plugs of the sleeve in the wellbore are possible. Due to the presence of the tapered bore 92 4 of the sleeve and the shaft surface that responds to it, the cone engagement closes. By turning the drilling tool, this phenomenon is eliminated. . The technical and economic efficiency of the downhole motor orientation device is to increase the reliability of drilling operations. The invention The device for orientation of the downhole motor on the author. St. No. that, in order to increase the reliability of the device by eliminating the possibility of a tongue when it is raised, the eccentric bushing in the lower part is made with a tapered bore and the shaft with a counter surface. Sources of information taken into account in the examination 1. USSR author's certificate № eWlO, cl. Е 21 В 7/08, 1977 (prototype).