An oil cylinder lifting land power catwalk

Abstract

The invention discloses a hoisting land power catwalk of a cylinder and belongs to the technical field of oil drilling equipment. The hoisting land power catwalk comprises a ramp, a pedestal, a rotating arm and a V-shaped drilling tool support beam, the upper end of the ramp is provided with a ramp guide pulley which is positioned at the connection part of the ramp and the drilling platform; the bottom of the V-shaped drilling tool support beam is provided with a support beam guide rail combined with the ramp guide pulley, and the support beam guide rail can be moved with respect to the ramp guide pulley. The hoisting land power catwalk is characterized in that the support beam guide rail at the V-shaped drilling tool support beam bottom is combined with the ramp guide pulley on the upper end of the ramp to directly convey the drilling rod near the well mouth, thereby improving drill-feeding working efficiency, in particular, the structure has the more obvious drill-feeding effect in the high drilling platform.

Description

technical field [0001] The invention relates to a power catwalk, in particular to an oil cylinder lifting type land power catwalk, which belongs to the technical field of petroleum drilling equipment. Background technique [0002] At present, there are many ways of mechanization used to transport the drill string to the drill floor on the drilling rig. The more common and highly automated mechanized power catwalk for transporting the drill string is the wire rope hoisting power catwalk or the parallel four-bar linkage mechanism. Power Catwalk. [0003] The wire rope lifting method power cat is to use the outrigger and the feeding mechanism to send the drilling tool into the V-shaped drilling device. The lifting winch is installed at the rear of the ramp. When the winch is laying the rope, the V-shaped drilling tool delivery device slides down by its own weight until it is lowered to a horizontal position. This kind of dynamic catwalk mainly has the following disadvantages:...

AI Technical Summary

Problems solved by technology

This kind of dynamic catwalk mainly has the following disadvantages: 1. The V-shaped drilling tool delivery device can only move to the upper end of the ramp, and cannot break away from the ramp guide rail, because the drilling tool cannot be directly sent to the vicinity of the drilling entrance, and it needs to be manually installed on the drilling floor. The last two feeding drills, especially for drilling projects with high drilling floor, this problem is more prominent, which greatly reduces the drilling efficiency of drilling tools; 2. The drilling tool feeding mechanism is separated from the outrigger, and the drilling tool feeding process There is a collision dead point, the trajectory of the drilling tool is easy to deviate, and its trajectory is uncontrollable, which is not conducive to one-button operation; 3. When the V-shaped drilling device is lowered, the movement is realized by the weight of the drill string and the V-shaped drilling device. When the V When the V-shaped drilling tool delivery device is at the lower part of the ramp, the sliding component force is small; the closer the front end of the V-shaped drilling tool delivery device is to the lower end of the ramp, the smaller the sliding force component is, and it is prone to jamming and V-shaped drilling tool delivery. It is difficult for the column device to return to the horizontal position; 4. Due to the flexible nature of the steel wire rope, the V-shaped drilling device shakes a lot when transferring the drilling tool, and the wire rope is in danger of breaking, making maintenance difficult; 5. This type of power catwalk is often shaped Larger size, often divided into two sections of transportation, higher requirements for installation and transportation

[0004] As for the power catwalk that does not use a ramp but uses a cylinder jacking parallel four-bar linkage mechanism, although it avoids the disadvantage of unstable lifting of the wire rope, it is mainly suitable for drilling rigs with a lower drilling floor

For the high drilling platform, the power catwalk of the four-bar linkage mechanism often requires two double-stage cylinders due to the limitation of the mechanism, and the control is difficult; once the cylinder fails, there is potential danger because there is no ramp, and the four-connection The height of the rod-mechanism powered catwalk is generally high and cannot be used as an ordinary catwalk

Images