Oil producing wellhead diagonal bolt tightening method and connecting rod type operation tool

An operating tool and connecting rod type technology, applied in the field of oil and gas development, can solve the problems of uneven bolt force, high labor intensity, and inability to use power tools, achieve balanced tightening torque, reduce labor intensity, and reduce puncture leakage effect of accident
CN109048745AActive Publication Date: 2018-12-21PETROCHINA CO LTD
5 Cites 2 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
PETROCHINA CO LTD
Publication Date
2018-12-21

Smart Images

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

Abstract

The invention discloses an oil producing wellhead diagonal bolt tightening method and a connecting rod type operation tool, and relates to the technical field of oil gas development. The method comprises the steps of enabling screw holes of two flanges matched with a wellhead to face to face, and installing bolts and nuts into the screw holes; tightening the all bolts and nuts to the preset torquethrough a turning tool with a torque meter; selecting the diagonal bolts and nuts on the flanges, and installing two wellhead spanners onto the diagonal bolts and nuts; inserting handles of the two wellhead spanners into a first support arm and a second support arm on the connecting rod type operation tool; and on the basis of ensuring the level through a level gauge, turning a force-bearing handle of the connecting rod type operation tool through a tool or manpower so as to uniformly tighten the diagonal bolts and nuts. According to the oil producing wellhead diagonal bolt tightening methodand the connecting rod type operation tool provided by the invention, the diagonal bolts of the oil producing wellhead can be tightened at the same time.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the technical field of oil and gas development, in particular to a method for tightening diagonal bolts at the head of an oil production well and a connecting rod type operating tool. Background technique

[0002] Oil production wellhead is the most common oil production equipment in the field of oil field production. Generally, there are two types of connections between various parts of the oil production wellhead. The first is the clamp slip connection, and the second is the flange connection. The first type of clamp connection is to use special slips and slip screws, but because the slips only have two or four holes, the force is not balanced, so it is basically no longer used in the field. The second type of flange connection is widely used in the field, that is, the outer diameter of the flange is 380mm, and there are 12 screw holes on the upper part, with a steel ring in the middle, and M46 bolts are used to connect the t...

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