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Fish milling experiment clamping and centralizing device in oilfield operation

A technology that catches fish during operation, applied in drilling equipment, earthwork drilling, drill pipe, etc., to achieve the effect of remarkable benefit, convenient operation and simple structure

Inactive Publication Date: 2013-04-03
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to solve the problems existing in the prior art, to provide a fish-falling milling experimental device in the oilfield operation process, to solve the problem of reliable straightening of large and long drill pipes and different shapes of falling fish in the ground-simulating fish-falling milling experiment. fish gripping problem

Method used

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  • Fish milling experiment clamping and centralizing device in oilfield operation
  • Fish milling experiment clamping and centralizing device in oilfield operation
  • Fish milling experiment clamping and centralizing device in oilfield operation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment one: see figure 1 In this oilfield operation, the clamping and stabilizing device for the milling experiment of falling fish includes a bottom table 18, and a drill pipe centralizing mechanism 1 mechanism is fixedly installed on the bottom table 18 through four positioning support rods 10 evenly distributed in the circumferential direction. Directly above; there is a fishing position adjustment mechanism 3 installed on the upper surface of the bottom table 18; a fishing clamping mechanism 2 is installed on the fishing positioning adjustment mechanism 3.

Embodiment 2

[0017] Embodiment two: see Figure 1~Figure 3 In this oilfield operation, the clamping and erecting device for the fish-falling milling experiment is composed of a drill pipe straightening mechanism 1, a fish-falling clamping mechanism 2, a fish-falling position adjustment mechanism 3, a positioning support rod 10 and a bottom worktable 18. The drill pipe The righting mechanism 1 is composed of an open circular upper cover 8, an open circular body 9 and three centralizing units arranged at equal angles; the falling fish clamping mechanism 2 is composed of a clamping mechanism feed screw 13 and a V-shaped gripper 11; the fish drop position adjustment mechanism 3 is composed of a hand wheel 17, a feed screw 19, an upper support 14, a middle support 15, and a lower support 16. The opening annular upper cover 8 of the drill pipe righting mechanism 1 is connected with the opening annular body 9 by bolts, and the three equiangularly arranged centering units are connected with the op...

Embodiment 3

[0018] Embodiment three: see Figure 1~Figure 3 , the outer surface of the spherical roller 6 in the drill pipe straightening mechanism 1 of the present embodiment is drum-shaped, so that the spherical roller 6 and the drill pipe are in point contact, and the working process of righting the drill pipe is eliminated due to the axis of the drill pipe and the opening ring. Righting problems caused by non-parallel axes of body 9. Three equiangularly arranged uprighting units can be fed independently to achieve reliable clamping of drill pipes. Other compositions and connections are the same as those in Embodiment 2.

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Abstract

The invention relates to a fish milling experiment clamping and centralizing device in oilfield operation. The device comprises a bottom workbench, a drill rod centralizing mechanism is fixedly arranged right above the bottom workbench through four positioning supporting rods distributed uniformly on the periphery, a fish position adjusting mechanism is arranged on the upper surface of the bottomworkbench, and a fish clamping mechanism is arranged on the fish position adjusting mechanism. The device is used for fish multi-point milling experiments, and can reliably centralize a rotary drill column and ensure the drillability of the drill column; and the device can effectively clamp fishes of different shapes and postures, and can realize position adjustment of the fishes on the horizontal plane to finish fish top repair of fish multi-point positions and enhance the capturing property of the fishes. The experiment device can truly simulate the working condition of multi-point contact of the finishes and milling shoes.

Description

technical field [0001] The invention relates to a clamping and stabilizing device for the grinding and milling experiment of falling fish in oil field operation, which belongs to the field of experimental operation in oil field operation tools. Background technique [0002] Catching and milling fallen fish is an unavoidable task in the working process. The so-called fallen fish refer to those falling in the well which hinder the normal drilling and must be cleared before the normal drilling can be resumed. There are mainly two methods of removing fallen fish: salvage and milling. When salvaging a fallen fish, the top of the fish must be milled to facilitate grabbing. For those fish with complex shapes that cannot be removed by salvage, a method must be used. The method of grinding and milling makes it into pieces, so as to relieve the obstruction of the falling fish to the normal drilling. In the operation of the fish milling experiment in the mine, due to the complexity o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B17/10
Inventor 刘吉成唐森隆刘树林翟宇毅周晓君刘锐
Owner SHANGHAI UNIV