SU953181A1

SU953181A1 - Apparatus for retaining drill string

Info

Publication number: SU953181A1
Application number: SU813240243A
Authority: SU
Inventors: Владимир Иванович Кучер; Юрий Анатольевич Мартьянов; Анатолий Григорьевич Лаптев; Олег Николаевич Баранов
Priority date: 1981-01-21
Filing date: 1981-01-21
Publication date: 1982-08-23

Description

Изобретение относитс к бурению скважин, а именно, к устройствам дл удержани бурового става.The invention relates to the drilling of wells, namely, devices for holding a drill rod.

Известно устройство дл удержани бурового става, которое содержит корпус и зажимной механизм с приводом$ 1.A device for holding a drill rod is known, which comprises a housing and a clamping mechanism with a $ 1 drive.

Недостатком этого устройства вл етс невысока скорость проведени спуско-подъемных операций вследствие , того, что оно не позвол ет пропускать штанги с большим перепадом диаметров.A disadvantage of this device is the low speed of carrying out hoisting operations due to the fact that it does not allow to pass bars with a large differential diameter.

Наиболее близким по технической сущности к изобретению вл етс устройство дл удержани бурового става, включающее корпус и зажимной механизм с приводом, содержащий захватные элементы и каретку с роликами, взаимодействующими с захватными элементами 2 .The closest in technical essence to the invention is a device for holding a drill rod, comprising a housing and a clamping mechanism with a drive, comprising gripping elements and a carriage with rollers cooperating with gripping elements 2.

Недостатком известного устройства вл етс то, что оно не обеспечивает пропуск и удержание штанг с большим перепадом диаметров, что не позвол ет повысить эффективность его работы.A disadvantage of the known device is that it does not allow the passage and retention of rods with a large diameter difference, which does not allow to increase its efficiency.

Цель изобретени - обеспечение возможности работы устройства с труба-т ми, оснащенньвчи центрирующими фонар ми или шнеками.The purpose of the invention is to enable the device to operate with tubes, equipped with centering lights or augers.

Указанна цель достигаетс тем, что в устройстве захватные элементы This goal is achieved by the fact that in the device gripping elements

выполнены в виде шарнирно соединенных с корпусом поворотных кулачков с упорами, имеющих криволинейную поверхность дл взаимодействи с роликами каретки, причем последн выполнена с направл ющими и соединена с приводом шарнирно.made in the form of pivotally connected to the casing rotary cams with stops having a curvilinear surface for interacting with the carriage rollers, the latter being made with guides and connected to the drive pivotally.

Такое выполнение устройства значительно сокращает затраты времени This implementation of the device significantly reduces the time

10 по наращиванию и демонтажу штанг, что позвол ет ускорить проведение спуско-подъемных операций и, тем самым, повысить эффективность его работы.10 for the extension and disassembly of the rods, which allows speeding up the launch and lifting operations, and thereby increasing its efficiency.

1515

На фиг, 1 изображено устройство, общий вид; на фиг. 2 - вид А на фиг. i; на фиг. 3 - разрез Б-Б на фиг. 1.Fig, 1 shows the device, a general view; in fig. 2 is a view A of FIG. i; in fig. 3 shows a section BB in FIG. one.

Устройство состоит из неподвижно20 го корпуса 1, шарнирно, через ось 2 соединенных с ним кулачков 3, каретки 4 и двух гидроцилиндров 5. Гидроцилиндры 5 шарнирно св заны корпусами 6 через оси 7 с кареткой 4, The device consists of a stationary housing 1, pivotally, through an axis 2 of connected cams 3, a carriage 4 and two hydraulic cylinders 5 connected to it. Hydraulic cylinders 5 are pivotally connected by bodies 6 through axis 7 to a carriage 4,

25 а штоками 8 через оси 9 - с корпусом 1.25 and the rods 8 through the axis 9 - with the housing 1.

Claims

The carriage 4 consists of the lower 10 and upper 11 cheeks, which are rigidly connected to each other through two logos 12 pins 13 and threaded connections 14. The bottom 1 deck 10 is equipped with an arcuate notch 15 with a radius greater than or equal to the radius of the opening of the lantern 16dl or screws through the drill head 17 of the drilling machine, which is the basis for mounting the device, as well as guides 18 interacting with the heads 19 of the heads 17. The rollers 21 are mounted on sliding bearings 20 in the holes of the carriage. The clips 22 of the drill rods and the stops 23 and the plates 24, which are mounted on the outer side, are in addition to it. In addition, on the outside, the cams 3 have profile surfaces 25 mated to the external surfaces of the plates 24. The stops 23, plates 24 and the profile surfaces 25 in during operation, they interact with the rollers 21. The clips 22 can be removable, with varying working surfaces, depending on the external surfaces of the drill rods used. The device through the holes 26 of the housing 1 is rigidly attached to the lobovin 17 drill machine. The device works as follows. When drilling a well after supplying a drilling rod for the length of the drilling machine, supplying the working fluid to the piston cavities of the hydraulic cylinders 5 ensures longitudinal movement of the armature 4 towards the opening 16 along the guides 19 of the lobovina 17 of the drilling machine. When moving the carriage, the rollers 21, in contact with the profile surfaces .25, turn and move the cams 3 to the drill rig located on the drilling axis and in the extended position of the hydraulic cylinders 5, interact with the plates 24, through the clips 22, seize the drill by the outer surface of the back body rods. The maximum clamping force of the drill rod clamps 22 occurs when the rollers 21 are in contact with the plates 24 of the cams 3, while maintaining the drill rod from rotation and longitudinal movements when extending or removing the drill rods. Then, by supplying the working fluid to the rod end of the hydraulic cylinders 5, the carriage 4 is displaced along the guides 19 of the lobovina 17 to the initial position. The forces on the carriage 4 and the cams 3, when the rollers 21 interact with the stops 23, are placed outside the limits of the hole 16 of the lobovina 17, freeing the passage for the drill rod. Thanks to the fact that the device provides the pass of bars with big; This difference in diameters significantly reduces the time spent on building up and dismantling the drill rod, speeds up the lifting process and thereby increases labor productivity. Apparatus of the invention for holding a drill rod, including a housing and a clamping mechanism with a drive, comprising gripping elements and a carriage with rollers interacting with gripping elements, characterized in that, in order to ensure the possibility of working the device with pipes equipped with centering lamps or augers , the gripping elements are made in the form of pivotally connected to the casing rotary cams with stops having a curved surface for interacting with the carriage rollers, the latter being ene with guide and pivotally connected to the actuator. Sources of information taken into account in the examination 1. The author's certificate of the USSR 1 154832, cl. E 21 B 19/16, 1961.

2. USSR author's certificate №810932, cl. E 21 V 19/10, 1979 (prototype). 26 dG

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