Device and method for rapid conveying and unloading of shale gas hydrate slurry

Abstract

The invention relates to a device and method for rapid conveying and unloading of shale gas hydrate slurry, and belongs to the technical field of natural gas hydrate storage and transportation. A hydrate slurry separator is designed, a rotating wheel is installed at an upper separation section, a spiral flow channel is formed in the middle separation section, a first liquid storage chamber and a slurry separation chamber are arranged on the lower separation section, and the hydrate slurry is subjected to dehydration thickening is carried out; a slurry tank truck is provided with a slurry vehicle-mounted storage tank, a matched emergency gasification system and a safety instrument system are arranged, so that the safe storage and rapid conveying of the hydrate slurry can be realized; a tanktruck chassis is provided with an air temperature type vaporizer and an electric heating vaporizer, an immersed pump is arranged in the storage tank, a matched pipeline system is combined to form four hydrate slurry rapid unloading processes. The invention provides the method for rapid conveying and unloading of the shale gas hydrate slurry. the slurry enters a slurry dewatering separator along the tangential direction, after the slurry is subjected to centrifugation, sedimentation and filtering separation, the slurry is stored in the slurry vehicle-mounted storage tank and rapidly conveyed to a user terminal, the slurry is unloaded by a corresponding unloading process and then enters an urban gas pipe network.

Description

technical field [0001] The invention relates to a fast transfer and unloading device and method for shale gas hydrate slurry, belonging to the technical field of natural gas hydrate transportation. Background technique [0002] Shale gas refers to unconventional natural gas that occurs in organic-rich shale and its interlayers, mainly in the form of adsorption or free, and its main component is methane. The gathering and transportation process of shale gas fields is as follows: shale gas wells are transported to multi-well well sites through gas production pipelines. After pretreatment, the well groups far away from the gas gathering station are connected to the main gas gathering line through the gas gathering branch line, and then transported to the gas gathering station. For final treatment, the well groups that are closer to the gas gathering station will directly enter the gas gathering station. [0003] Because shale gas development has the characteristics of fast pre...

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Problems solved by technology

[0008] Therefore, according to the hydrate slurry storage conditions, we design a hydrate slurry storage device that does not require external equipment refrigeration, which can be used for long-distance natural gas hydrate slurry transportation, so as to avoid the rapid decline of shale gas production in the gas field gathering and transportation system. A series of problems caused by problems such as the contradictory relationship between pipe network pressure and output and the uncertainty of new capacity in the later period

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