A method of manufacturing a hole reamer with self-righting guiding function
A technology with guiding function and manufacturing method, which is applied in drilling equipment and methods, earthwork drilling, directional drilling, etc. It can solve the problems of increasing the connection structure and the weight of the drill pipe in the hole, reaming and falling, unfavorable pipeline dragging back, etc.
Active Publication Date: 2021-11-09
SICHUAN GASOLINEEUM CONSTR ENG
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Problems solved by technology
[0003] When common large-scale directional drilling is used for reaming, the existing large-diameter reamers have a tendency to fall when reaming due to their heavy weight, especially when multi-stage reaming has a greater impact on the shape of the channel. Most of them are pear-shaped holes with small top and big bottom. The quality of hole formation is not conducive to the back-tow of the pipeline, which seriously affects the success rate of back-tow and the anti-corrosion layer of the pipeline. Especially for soft geology such as sand and mudstone, the tendency to form pear-shaped holes is more obvious
At the same time, this kind of reamer does not have the function of self-righting and guiding, and an external centralizer is needed to guide the reamer along the axis of the tunnel.
Method used
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[0030] Hereinafter, a method of manufacturing a hole reamer with a self-righting guiding function of the present invention will be described in detail with reference to exemplary embodiments and accompanying drawings. It should be noted that "first", "second", "third", etc. are only for convenience of description and distinction, and should not be understood as indicating or implying relative importance. "Left", "right", "inner" and "outer" are only for convenience of describing and constituting a relative orientation or positional relationship, and do not indicate or imply that the referred components must have the specific orientation or position.
[0031] figure 1 A process flow chart of an exemplary embodiment of a method for manufacturing a hole reamer with self-righting guiding function according to the present invention is shown.
[0032] In this example, if figure 1 As shown, the manufacturing method includes the following steps:
[0033] First, a main shaft, a plur...
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The invention provides a method for manufacturing a hole reamer with a self-righting and guiding function. The manufacturing method includes the following steps: first, forming a main shaft, a plurality of cones, a plurality of righting ribs, and one or more cone reinforcement ribs , righting barrel and base; then, on the main shaft, weld the installation base, righting barrel and cone ribs according to the position; wherein, firstly, the base and the main shaft shaft body are welded and fixed, and the right end of the righting barrel and the base The left side of the seat is welded and fixed, and the left end is welded and fixed with part of the shaft body of the main shaft to form a sealed gas chamber; one end of the toothed wheel reinforcement is welded to the right side of the base, and the other end is welded to the shaft body of the main shaft; next, A plurality of stabilizing ribs are welded and installed on the centralizing barrel, and a plurality of cones are welded and installed on the cone seat. The manufacturing method of the hole reamer with self-righting and guiding function of the present invention has the advantages of simple structure, convenient processing, high strength of the hole reamer, and the like.
Description
technical field [0001] The invention relates to the directional drilling and crossing construction of large long-distance pipelines in the surface construction of oil and gas pipelines in oil and gas fields, and belongs to the technical field of drilling or drilling engineering. Specifically, it relates to a method for manufacturing a hole reamer with a self-righting guiding function. Background technique [0002] At present, because horizontal directional drilling mainly traverses the strata within 30m from the ground, the strata are broken and broken, especially the entry and exit sections close to the ground are mostly weathered or fully weathered strata, which brings difficulties to directional drilling and hole reaming. However, the existing horizontal directional drilling construction requirements continue to increase, and there are more and more directional drilling projects with a diameter of 1000mm and above, and the requirements for the structure and manufacturing ...
Claims
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IPC IPC(8): E21B7/28E21B7/04E21B10/08E21B17/10
CPCE21B7/046E21B7/28E21B10/08E21B17/1078
Inventor 张杰王学军叶文建郎明春黄正邱德璟
Owner SICHUAN GASOLINEEUM CONSTR ENG