Telescoping derrick with great width in bottom

A technology of derrick and opening size, which is applied in the direction of drilling equipment, earthwork drilling and production, supporting devices, etc., which can solve the problems of overrunning derrick transfer length and high turning radius requirements, so as to facilitate large-scale wellhead operation equipment and shorten the transfer length , The effect of opening the drill floor

Inactive Publication Date: 2015-12-23
BAOJI PETROLEUM MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a telescopic derrick with a large opening at the bottom, which solves the problems of the K-type derrick with a large opening in the prior art.

Method used

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  • Telescoping derrick with great width in bottom
  • Telescoping derrick with great width in bottom
  • Telescoping derrick with great width in bottom

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Embodiment Construction

[0024] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0025] The structure of the present invention is to include the lower section derrick 2, and the upper section derrick 1 that can slide in the lower section derrick 2,

[0026] refer to figure 1 , figure 2 , the lower section derrick 2 is a variable cross-section rigid frame structure, which is fixedly connected by three sections from top to bottom in sequence, wherein the top section 2-1 and the bottom section 2-3 are rectangular rigid frame structures, and the opening of the bottom section 2-3 is obviously larger than The opening of the top section 2-1, the middle section 2-2 as a transition section, and the two sides of the middle section 2-2 are inverted V-shaped variable cross-section structures (similar to trapezoidal);

[0027] The upper and lower ends of both sides of the top section 2-1 are respectively equipped with a guide wheel...

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Abstract

The invention discloses a telescoping derrick with a great width in bottom. The telescoping derrick comprises a lower-section derrick and an upper-section derrick, wherein the lower-section derrick is formed by fixedly connecting three sections; the width of the bottom section is greater than that of the top section, and the middle section is used as a transition section; guide wheel assemblies I are respectively mounted at upper and lower ends inside the two sides of the top section; a group of dowel pins is respectively mounted at the two sides of the top section; two large rope ear plates are arranged on a top beam of the top section; a plurality of groups of guide wheel assemblies II are also arranged on a back beam of the middle section; the width of the upper-section derrick is smaller than that of the top section; four stand columns of the upper-section derrick are provided with guide rails; a group of guide rope slide wheels is respectively arranged at left and right sides of the bottom surface of the upper-section derrick; and high-position and low-position positioning holes are formed in beams at the two sides of the upper-section derrick. The device easily realizes telescoping connection of the upper-section derrick and the lower-section derrick.

Description

technical field [0001] The invention belongs to the technical field of petroleum machinery and equipment, and relates to a telescopic derrick with a large opening at the bottom. Background technique [0002] For the convenience of transportation and installation, oil drilling rigs often use a telescopic derrick with a rectangular cross-section. The telescopic derrick is divided into upper and lower sections. When the telescopic derrick is lifted and lowered, the upper section is retracted, the lifting load is small, the length of the derrick is shortened after retracting, and the overall transportation is convenient. [0003] However, the conventional telescopic derrick also has the disadvantage that the opening size of the bottom is very small, and large wellhead operation equipment cannot be arranged on the drilling floor. However, the existing K-type derrick with large opening has a large opening at the bottom and a wide drill floor, which is convenient for equipment lay...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B15/00
Inventor 李全星李毅平张青锋程鹏张友会
Owner BAOJI PETROLEUM MASCH CO LTD
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