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.
CN1944920AInactive Publication Date: 2007-04-11TANGSHAN KAILUAN CONSTR (GRP) CO LTD
0 Cites 8 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
TANGSHAN KAILUAN CONSTR (GRP) CO LTD
Publication Date
2007-04-11
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

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.
Need to check novelty before this filing date? Find Prior Art

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More