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Overhead hoisting and butt-joint method for box-type headframe

A derrick and hoisting technology, which is applied to drilling equipment, earthwork drilling, supporting devices, etc., can solve problems that have not yet been found, and achieve the effects of shortening the well construction period, avoiding production stop loss, and reducing demolition costs

Inactive Publication Date: 2011-07-27
中煤第七十一工程处 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

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  • Overhead hoisting and butt-joint method for box-type headframe
  • Overhead hoisting and butt-joint method for box-type headframe
  • Overhead hoisting and butt-joint method for box-type headframe

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Embodiment Construction

[0023] Such as figure 1 , figure 2 As shown, the box-shaped derrick is divided into two sections to manufacture because the site is too narrow to meet the overall assembly requirements of the derrick. figure 1 Shown is the main derrick 1, which is located at the center of the wellhead 4 during manufacture. The main derrick 1 end is provided with hinged seats 2 on one side and positioning blocks 3 on the other two sides. figure 2 Shown is the hoisting derrick 5 , the lower end surface of which is provided with hinged ears 6 to connect and cooperate with the hinged seat 2 .

[0024] Such as image 3 As shown, the main derrick 1 is first pulled up with the main rope 7 and fixed after reaching a certain height and inclination; The installation of the wellhead stand and the main derrick is a conventional installation method.

[0025] The upper end of the main derrick 1 is box-shaped, one side is provided with a hinged seat 2, and the other side is provided with a positioning ...

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Abstract

The invention relates to an overhead and butt-joint method for a box-type headframe, which is characterized in that the method comprises the following steps of: a. manufacturing the box-type headframeas two parts: a mainbody headframe (1) and a hoisting headframe (5); b. installing a well head vertical frame (8) and the mainbody headframe (1) at the proper place according to a normal installationmethod; c. adopting a hoisting equipment to hoist the hoisting headframe (5) so as to carry out butt-joint positioning with the mainbody headframe along a positioning block; and d. welding the jointof the hoisting headframe and the mainbody headframe, thus forming the box-type headframe entirety. The method has the advantages of: 1. manufacturing and installing the box-type haedframe by section,breaking through the traditional hoisting process, thus reducing the space occupying of the construction field; 2. carrying out installation without stopping production, thus avoiding the loss due toproduction stopping; and 3. being capable of being applied to the technical renovation engineering of old coal mine and reducing the removal expense of the original building and the loss owning to production stopping.

Description

technical field [0001] The invention relates to the technical field of box-type derrick hoisting used in coal mines and metal mines, and is particularly engaged in the hoisting process of large-scale box-type derricks when the construction site is extremely narrow. Background technique [0002] At present, the traditional hoisting process of directly hoisting the whole derrick at one time is adopted in China. However, in some occasions where the wellhead site is extremely narrow, because the overall length of the box-type derrick exceeds the wellhead site, it is impossible to manufacture the box-type derrick on site as a whole. Not to mention the overall hoisting box-type derrick. For example, the auxiliary shaft hoisting system of the Kuzlu Coal Mine in Turkey is a technical renovation project of the coal mine. The construction site is extremely narrow and already formed, and the construction conditions are severely restricted. The problem is that the construction site at ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B15/00E21B19/02
Inventor 吴信远方体利李世军刘炳炎郭保国刘宁
Owner 中煤第七十一工程处
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