Shale gas fracturing flow-back fluid coupled membrane separating equipment and separation method

Abstract

The invention provides shale gas fracturing flow-back fluid coupled membrane separating equipment and a separation method. The equipment comprises a shale gas fracturing flow-back fluid pretreatment facility, a primary ultrafilter membrane separation facility, a secondary micro-filter membrane separation facility, a waste mud and rock debris pool, and a clean water pool; the shale gas fracturing flow-back fluid pretreatment facility is communicated with the primary ultrafilter membrane separation facility through a pipeline (A); the primary ultrafilter membrane separation facility is communicated with the secondary micro-filter membrane separation facility through a pipeline (B), and the secondary micro-filter membrane separation facility is communicated with the waste mud and rock debris pool and clean water pool through a branched pipeline. The provided equipment has the advantages that the equipment structure is simple, the manufacture and application costs are low, the processed shale gas fracturing flow-back fluid can reach the standards of reuse water and can be used to produce fracturing liquid; the problem that the shale gas development needs a great amount of water is solved, the resource is fully used and recycled, and the zero discharge of shale gas fracturing flow-back fluid can be realized.

Description

technical field [0001] The invention relates to the technical field of shale gas fracturing flowback fluid separation, in particular to a shale gas fracturing flowback fluid coupled membrane separation device and separation method. Background technique [0002] While the development of shale gas has brought huge oil and gas resource prospects and commercial profits, it has also caused a series of environmental problems: ecological environment damage, water resource challenges, environmental pollution and geological disasters. At present, the water resources and environmental issues arising from the development of shale gas have become the focus of global attention. For example, the Marcellus shale gas field in the United States consumes a large amount of water resources (the average water consumption of a single well is about 15,000 cubic meters) and potential environmental hazards (such as noise, waste water, waste gas and its exploitation during the shale gas extraction pr...

AI Technical Summary

Problems solved by technology

Among them, shale gas fracturing flowback wastewater is a kind of high-salt and high-chlorine organic wastewater that is difficult to treat. It has a large amount of water, complex components, and poor biodegradability. An efficient and practical shale gas fracturing flowback wastewater treatment process is imperative

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