RU4329U1 - DEVICE FOR DRAINING AND LIFTING OF A PIPE COLUMN IN WELLS UNDER PRESSURE - Google Patents

Abstract

A device for lowering and lifting a string of pipes in wells under pressure, containing the first block of hydraulic cylinders, the bodies of which are joined stationary, and the rods with a movable traverse equipped with grippers for pipes, characterized in that a second block of hydraulic cylinders is mounted on the fixed traverse of the first block of hydraulic cylinders, a movable traverse which, equipped with a gripper for pipes, is installed with the possibility of independent movement relative to the movable crosshead of the first block of hydraulic cylinders.

Description

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MDL E2I BI9 / 00 DEVICE for spike and column. pipes in wells with iodine pressure. Invention refers to the drilling industry, in particular, to oil fields near equipment. Known installations for the continuous lifting of a continuous column of pipes (prospectus vT / eivk zf d run // 7: Ccftcf6o 1992 - I9sb G.G.) ,:: sod, holding a lift in the form of two continuous pipes) PS1 | @ drink with a pipe gripper and a drive moving "I am one of the {w, a device for tightening chains to a pipe string, a drum for winding a pipe string, a drum rotation drive, a column stacking device for a drum and a lifting device for installing the hoist on the downhole equipment from the chassis and back to the transport position. Such a device provides continuous lifting and lowering of the column into the well. “However, the manufacture of a solid column with a length of 3”. ““ 6 km requires three-dimensional bulky and expensive special equipment. A device is known for intermittent (multiple) lifting and lowering of spikes in wells under pressure according to a.s; USSR No. I72I2I2, R 199, MKI EEIBI9 / 00, (selected for the prototype, containing a hoist, complete with an unbroken block of hydraulic cylinders, uniting respectively hydraulic cylinders with fixed and movable traverses with grip for pipes, hydraulic control valve evya knowing the cavities of cylinders with a power source and a drain, a control unit. This design allows you to push the pipes into the wells up to;; - moment counterbalancing the weight of the pipe string into the well. Next, the pipe string is lowered under its own weight by interception method, namely, the pipe string is secured by a gripper movable beam and.... - -,

FULL lowering the pipe. After atoro, the pipe string is expanded with a new pipe and the lowering process continues until it is completely lowered.

the entire pipe string

A significant drawback of this installation is the long duration of the launching and lifting operation, which is due to the limited stroke length of the hydraulic rod stocks and the presence of idling of the movable beam, during which the pipe string is stationary. . The aim of the present invention is to reduce the time of descent-lifting of operands by eliminating the stop of the pipe string, which provides continuous descent and lifting of the pipe string at a known installation. / ,. . . . .

The specified technical result is achieved by the fact that in the proposed device for lowering and lifting the string of pipes in wells under pressure, containing the first block of hydraulic cylinders, the bodies of which are joined stationary, and the rods are movable with a traverse with a gripper for a chrub, according to the invention, on the movable traverse of the first block of hydraulic cylinders installed the second block x idroschilivdrov i movable traverse ifOTOporo; secured by a gripper for pipes, it is installed with the possibility of independent movement relative to the movable yoke of the first block of hydraulic cylinders

The essence of the proposed is illustrated in the drawing, which shows a device for lowering and lifting a pipe string.

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The device contains a first block of hydrocylodromes with housings I, fixed on a fixed crossarm 2, pin 3, connected Ш) 1е first

movable traverse 4 with gripper 5 with wedge inserts 6, second

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a hydraulic cylinder with housings 7 fixed to a fixed traverse 2, rods 8 connected by a second movable traverse 9, with a grab 10 with wedge inserts 6 "

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Capture II Serves retention, columns, shitrimer, for the repair of captures 5 and lOi

The device for lowering and lifting the spikes of pipes in pressure wells works the same way: “It is installed and mounted directly on the hole with all-power lifting equipment. By letting the collapsed pipes run down to the squeegee under pressure, both movable traverses 4 and 9 are lifted up. The first pipe is secured by grabbing 5 of the first movable traverse 4 with six wedge inserts 6 and moving rods 3 ogat the tubing pipe 3, overcoming the pressure in the well in the runway. value H, lower the second under the moving drift 10 at the speed of the first 4 and fasten the pipe with the gripper 10 of the second movable yoke 9, and the gripper 5 of the first movable yoke 4 unfastened returning the yoke 4 to its original position up to the moment of starting 1011 not. second moving crosspiece 9 These opereschiinereduyute until complete lowering tubes,

Under: bvm pipe columns are carried out in the reverse order,

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having previously carried out an increase in the diameter of the pipes, the technological pipe for securing it with grippers 5 and 10 of the movable traverses 4 and 9. When moving the traverses 4 and 9, lower them down, grab the pipe string with a 5-wedge wedge insert 6 and move the rods 3 up 4 pipe column to size.

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In the course of travel N. the rods 3 podshmav traverse 9 e simultaneously fixing the pipe string by grab 10, and grab 5 on the movable traverse 4

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unfastened and traverse 4 opu @ cabins - in the initial position down. These operations are repeated until the entire pipe string is fully raised.

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To enable independent movement of traverse 4 and 9

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rods 8 of the second hydroshield block can be fixed to

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the movable traverse 2, and the body 7 of the hydraulic cylinders are connected to the second mobile “traverse 9.

With equal dimensions of the stroke cylinders and the same strokes of the rods 3 and 8, the second movable crosshead 9 in cases of fixing the housings 7 on the fixed crosshead 2 must be filled with a U-shaped to ensure

traverse movement 4,

The proposed design can significantly reduce the time of descent “lifting 1X operations of the pipe string into the wells, including wells under pressure,

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Chief Engineer

V.F. Ponomarev

Claims (1)

A device for lowering and lifting a string of pipes in wells under pressure, containing the first block of hydraulic cylinders, the bodies of which are joined stationary, and the rods with a movable traverse equipped with grippers for pipes, characterized in that on the fixed traverse of the first block of hydraulic cylinders there is a second block of hydraulic cylinders, a movable traverse which, equipped with a gripper for pipes, is installed with the possibility of independent movement relative to the movable crosshead of the first block of hydraulic cylinders.