Gathering and transportation pipeline directional drilling bundling laying construction method

Abstract

The invention discloses a gathering and transportation pipeline directional drilling bundling laying construction method, and belongs to the technical field of gathering and transportation pipeline trenchless crossing. In the gathering and transportation pipeline directional drilling bundling laying construction method provided by the invention, firstly, dragging back a steel sleeve through a modeof horizontal directional drilling, then, a gathering and transportation pipeline is enabled to pass through in the steel sleeve through a mode of gathering and transportation, thus, trenchless crossing of the gathering and transportation pipeline is completed, further, a gap between the steel sleeve and the gathering and transportation pipeline is fully filled with grout, and finally, a weldinghead connection work for the gathering and transportation pipeline is completed. The construction method provided by the invention can drag back the gathering and transportation pipeline through the mode of gathering and transportation, thus, a work of passing through a river can be realized successfully, the whole dragging back and passing through process is smooth, a drag-back sleeve is connected with a cardan joint, a pipe bundle is guaranteed to be not twisted in the steel sleeve, the gathering and transportation pipeline and the sleeve are consistent in a guiding curve, an anti-corrosionlayer of the gathering and transportation pipeline is not liable to be damaged, after dragging back and passing through, the gap between the steel sleeve and the bundling pass-through gathering and transportation pipeline is filled with cement grout so as to be solid, and safety during a period of pipeline operating is guaranteed more.

Description

technical field [0001] The invention relates to a construction method for directional drilling and cluster laying of gathering and transportation pipelines, which belongs to the technical field of non-excavation crossing of gathering and transportation pipelines. Background technique [0002] As the country vigorously builds the oil and gas pipeline transmission network, the "trenchless" crossing technology is also constantly developing and improving. Pipelines and high-pressure natural gas are often laid in the same ditch, but when laying multiple pipes in the same ditch to cross rivers, especially when crossing navigable rivers, it is impossible to use excavation or erect trusses to cross the way. Horizontal directional drilling can solve this problem in the prior art However, the simultaneous drilling of multiple pipes is limited by the horizontal distance between the directional drilling pipes. When laying multiple pipes in the same ditch, crossing obstacles such as rive...

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a construction method for directional drilling cluster laying of gathering pipelines, which is used to solve the problems of the existing multi-pipe parallel directional drilling crossing of the existing gathering pipelines, which takes up a lot of land and has a long construction period, so as to reduce the crossing and improve the construction efficiency. Construction efficiency, reduce construction cost

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