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Method for setting up large box type steel structure permanent headframe during well drilling period

A technology for steel structures and derricks is applied in the field of erecting large-scale permanent derricks of steel structures, which can solve problems such as limitations and achieve the effects of improving the technological level and achieving significant economic and social benefits.

Inactive Publication Date: 2007-04-11
TANGSHAN KAILUAN CONSTR (GRP) CO LTD
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  • Abstract
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Problems solved by technology

But in some special cases, this method is limited

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  • Method for setting up large box type steel structure permanent headframe during well drilling period
  • Method for setting up large box type steel structure permanent headframe during well drilling period
  • Method for setting up large box type steel structure permanent headframe during well drilling period

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Embodiment Construction

[0037] The present invention is a method for erecting a large-scale box-type steel structure permanent derrick during well drilling. It divides the large-scale box-type steel structure permanent derrick into two sector parts based on the centerline of the derrick, and assembles these two parts on the wellhead centerline respectively. Then the two parts are erected separately, closed in the air, and the top beam and other horizontal beams are welded to complete the erection of the derrick.

[0038] An example of the present invention is as follows:

[0039] Sinking derrick 1 is a pavilion-type derrick with four oblique braces. The root span of the four oblique braces of the derrick is 14m×14m. Well sinking derrick 1 is installed in the center of the shaft center line, and sinking hoisting winches and stabilizing cars are installed on the north and south sides of the well head. The permanent derrick to be erected is the opposite double lifting pavilion type derrick. The derrick...

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Abstract

The present invention relates to lifting technology, and is especially method of uprising large box type steel structure of permanent headframe while well drilling construction. The technological scheme of uprising the large box type steel structure of permanent headframe includes splitting the large box type steel structure into two parts, including sprag A and sprag B, assembled symmetrically onto on two sides of the well; erecting hoist tower between the sprag A and the well drilling headframe; hoisting the sprag A with the hoist tower; laying down the hoist tower; hoisting the sprag B with the sprag A; and healing up the sprag A and the sprag B with cables and welding the top. The said process can uprise large box type steel structure of permanent headframe without need of interrupting the well drilling construction.

Description

technical field [0001] The invention relates to a method for erecting a large-scale steel structure permanent derrick, and belongs to the technical field of lifting methods. Background technique [0002] In the construction of underground mining mine construction, erecting the derrick of the wellhead is a very important work. At present, the erection of large permanent derricks is generally carried out when the conditions of the construction site are fully equipped and there are no obstacles. The method adopted is the small overturning method. First, erect a lifting tower on one side of the wellhead, then use the lifting tower to raise the main diagonal brace of the derrick, and then use the main diagonal brace to raise the auxiliary diagonal brace. With this method, the derrick can be hoisted to the wellhead position at one time by using the lifting tower and placed on the pre-built foundation, provided that the wellhead has no obstacles. But in some special cases, this m...

Claims

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Application Information

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IPC IPC(8): E04H12/26
Inventor 宋世宏张瑞张宝峰李岳姜经纬邢贵坡屈福民
Owner TANGSHAN KAILUAN CONSTR (GRP) CO LTD
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