Door type derrick with crown block adjustable in transverse direction and longitudinal direction

Abstract

The invention discloses a door type derrick with a crown block adjustable in the transverse direction and the longitudinal direction. The door type derrick comprises the crown block, a derrick body, a Y-type support and adjusting screw rods, wherein the crown block is arranged on the upper portion of the derrick body in a welding mode, the derrick body is connected with the Y-type support through pin shafts and hasps, and the adjusting screw rods are connected with the derrick body in a hinged mode. The crown block is provided with a longitudinal-adjusting hydraulic cylinder, one end of the longitudinal-adjusting hydraulic cylinder is hinged to a base, the other end of the longitudinal-adjusting hydraulic cylinder is hinged to a longitudinal-adjusting base, the base supports the longitudinal-adjusting base, guiding is conducted by a guiding block, the longitudinal-adjusting base supports a transverse-adjusting base, guiding is conducted by a guiding block, the longitudinal-adjusting base is connected with a transverse-adjusting hydraulic cylinder in a hinged mode, the transverse-adjusting base is connected with the transverse-adjusting hydraulic cylinder in a hinged mode, and the transverse-adjusting base supports a pulley block. The door type derrick is mainly used for lifting an injection head, transverse adjustment and longitudinal adjustment can be conducted, normal working of the injecting head is ensured, adjustment of a well opening is convenient, and using cost is low.

Description

technical field [0001] The invention relates to the technical field of oil and gas drilling, in particular to a portal-type derrick whose crown block can be adjusted horizontally and vertically. Background technique [0002] With the development of coiled tubing vehicles and the efficiency of drilling and workover operations gradually being recognized by oilfield users, coiled tubing operations are now more and more widely used in workover and drilling. The key component of coiled tubing is the tubing injection head, which is now used to lift There are two ways to work the tubing injection head: [0003] 1. The injection head is lifted by a crane, and the drilling and workover operations are mainly carried out by lifting the injection head with a large-tonnage crane. This method is more flexible in wellhead adjustment, but the use cost is high, and the hydraulic cylinder boom of the crane is unstable; [0004] 2. The injection head is lifted by the vertical gantry type derr...

AI Technical Summary

Problems solved by technology

[0003] 1. The injection head is lifted by a crane, and the drilling and workover operations are mainly carried out by lifting the injection head with a large-tonnage crane. This method is more flexible in wellhead adjustment, but the use cost is high, and the hydraulic cylinder boom of the crane is unstable;

[0004] 2. The injection head is lifted by the vertical gantry type derrick, and the injection head is mainly lifted by the crown block and the hook to carry out drilling and workover operations. This method is low in use cost, but the wellhead adjustment is inconvenient

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