SU929811A1

SU929811A1 - Elevator for drilling rigs

Info

Publication number: SU929811A1
Application number: SU792814844A
Authority: SU
Inventors: Владимир Кузьмич Васильев; Виктор Александрович Пашков
Original assignee: Свердловский Машиностроительный Завод Им.В.В.Воровского
Priority date: 1979-09-05
Filing date: 1979-09-05
Publication date: 1982-05-23

Description

1one

Изобретение относитс к бурению скважин , а именно, к механизмам дл спускоподъемных операций на буровых установках с подвижным враш,ателем.The invention relates to the drilling of wells, namely, to mechanisms for tripping operations on drilling rigs with a mobile vrash.

Известен элеватор дл подъема и вращени труб, содержаший захватное устройство и корпус, передающий крут щий момент 1.A grain elevator for lifting and rotating pipes is known, which contains a gripping device and a housing, transmitting torque 1.

Недостатками элеватора вл етс то, что необходимо затрачивать большие усили при захвате и освобождении бурильной трубы и, кроме того, не обеспечиваетс необходима безопасность работ.The disadvantages of the elevator are that it is necessary to expend large efforts in the seizure and release of the drill pipe and, moreover, the necessary work safety is not ensured.

Наиболее близким к изобретению вл етс элеватор дл буровых установок, включающий корпус с выступами дл передачи крут щего момента, размещенный концентрично в нем ствол с кулачками и захватное устройство 2.Closest to the invention is an elevator for drilling rigs, comprising a housing with protrusions for transmitting torque, a barrel with cams and a gripping device 2 which is concentric in it.

Недостатками элеватора вл етс то, что дл захвата и освобождени бурильной трубы необходимо вручную поддерживать корпус в горизонтальном положении и одновременно вставл ть или вынимать бурильную трубу и, кроме того, крут щий момент от вращател установки посто нно передаетс на корпус элеватора и на закрепленную в немThe disadvantages of the elevator are that in order to grip and release the drill pipe, it is necessary to manually maintain the body in a horizontal position and at the same time insert or pull out the drill pipe and, moreover, the torque from the rotator is constantly transmitted to the elevator body and fixed to it

трубу, что не позвол ет ускорить проведение спуско-подъемных операций и не обеспечивает необходимую безопасность работ. Цель изобретени - ускорение спускоподъемных операций и повышение надеж5 ности элеватора в работе за счет исключени возможности передачи крут щего момента от ствола к корпусу при спуске и подъеме труб.pipe, which does not allow to speed up the tripping and does not provide the necessary safety of work. The purpose of the invention is to accelerate tripping operations and increase the reliability of the elevator in operation by eliminating the possibility of transferring torque from the barrel to the body during the descent and ascent of pipes.

Поставленна цель достигаетс тем, что ° захватное устройство выполнено в виде щарнирно соединенной с корпусом втулки с выступами и сквозным отверстием на боковой поверхности, в которой установлен с возможностью осевого перемещени затвор с ,5 отверстием, имеющим в сечении форму сопр женных круга и пр моугольника.The goal is achieved by the fact that the gripping device is made in the form of a hinge hinged to the body with protrusions and a through hole on the side surface in which the valve is mounted for axial movement with a 5 hole having a cross-sectional circle and rectangle in cross section.

Кроме того, ствол выполнен с кольцевым выступом, рассто ние между которым и кулачком больще щирины выступа корпуса.In addition, the barrel is made with an annular protrusion, the distance between which and the cam is greater than the width of the protrusion of the body.

На фиг. 1 изображен элеватор, общий вид; на фиг. 2 - разрез А-А на фиг. 1; на фиг. 3 - разрез Б-Б на .фиг. 1.FIG. 1 shows an elevator, general view; in fig. 2 shows section A-A in FIG. one; in fig. 3 - section BB on .fig. one.

Claims

The elevator consists of a housing 1 pivotally connected to a gripping device consisting of a sleeve 2 and a bolt 3, a barrel 4 and a casing 5 rigidly connected to the barrel 4. The housing 1 in the upper part has projections 6, and the barrel 4 has two cams 7 and a shoulder 8. The elevator works as follows. When lowering the drill pipe, the lock of the drill pipe located in a horizontal position is inserted into the round hole of the sleeve 2 with the open gate 3, i.e. when the opening of the gate 3 and the sleeve 2 are aligned. When the upper lock of the pipe lock is aligned with the gate 3, the gate 3 closes i.e., the rectangular groove of the shutter 3 is aligned with the orifice of the hub 2. After that, the elevator with the pipe is raised with the help of a movable rotator. In this case, the body 1 by the projections 6 rests on the flange 8 of the barrel 4. Then the lower end of the pipe is lowered into the threaded part of the drill pipe lock in the well. When the movable rotator is further lowered, the housing 1 remains stationary and the barrel 4 lowers until the cams 7 engages with the projections 6 of the housing 1. The lower edge of the casing 5 is aligned with the annular groove on the outer surface of the housing 1, which serves for visual monitoring of the engagement. In this position, the rotation is turned on and the drill pipes are screwed. To make up the upper end of the drill pipe with the threaded end of the barrel 4, the rotator together with the barrel 4 is lowered all the way down. In this case, the cams 7 are located below the protrusions 6 of the housing 1 and do not hinder the rotation of the barrel 4 relative to the housing 1. When screwing and unscrewing the drill pipes, the shutter 3 is held in the closed position with spring clips. When lifting the drill pipe from the borehole, operations are performed in reverse order. Due to the fact that the use of the proposed elevator facilitates manual labor, accelerates tripping and ensures safe operation, increases productivity. Claim 1. Elevator for drilling rigs, comprising a housing with protrusions for transmitting torque, a barrel with cams arranged concentrically therein and a gripping device, characterized in that, in order to accelerate the lifting and lifting operation and to increase the reliability of the elevator at work, eliminating the possibility of torque transfer from the barrel to the body during the descent and ascent of pipes, the gripping device is made in the form of a hinged joint with the sleeve body with protrusions and a through hole on the side surface in which the shutter is mounted with the possibility of axial movement with a hole having the cross-sectional shape of a conjugate circle and a rectangle. 2. An elevator according to claim 1, characterized in that the barrel is provided with an annular protrusion, the distance between said protrusion and cam is greater than the width of the protrusion of the housing. Sources of information taken into account in the examination 1. USSR author's certificate number 542818, cl. E 21 19/06, 1974.

2. USSR author's certificate number 324376, cl. E 21 19/07, 1967.