A low-amplitude compact split-chain shale gas fracturing surface pipeline

Abstract

The invention relates to a compact low-amplitude branch type shale gas fracturing surface pipeline which is mainly composed of fracturing pumps, bends, crossed four-way parts and control valves. The compact low-amplitude branch type shale gas fracturing surface pipeline is characterized in that the fracturing pumps are annularly distributed with a well mouth as the circle center, every three fracturing pumps form a pump set, the internal connecting modes of all the pump sets are the same, and all the pump sets are connected with the well mouth through long straight pipes; according to the three fracturing pumps of each pump set, the three fracturing pumps are connected through the corresponding crossed four-way part, the middle fracturing pump is connected with the crossed four-way part through a short straight pipe and a flange, and the fracturing pumps on the two sides are connected with the crossed four-way part through the corresponding bends, straight pipes and flanges; and each crossed four-way part is connected with the corresponding control valve through a flange, and each control valve is connected with a long pipe through a flange. Each crossed four-way part can also be a claw type four-way part, and all the fracturing pumps are connected with the corresponding claw type four-way parts through short straight pipes and flanges. The compact low-amplitude branch type shale gas fracturing surface pipeline is applicable to shale gas fracturing construction in places where construction pressure is high and the well site area is small, the vibration amplitude of the surface pipeline can be effectively lowered, and the occupied area of fracturing equipment can be reduced.

Description

technical field [0001] The invention relates to a surface pipeline in shale gas fracturing construction, and belongs to the technical field of shale gas fracturing equipment. Background technique [0002] Shale reservoirs have small porosity and low permeability, so that shale gas wells still need reservoir stimulation after completion to obtain ideal production. Therefore, hydraulic fracturing technology has become one of the key technologies for shale gas development. The surface pipeline is the main measure connecting the fracturing pump and the wellhead. Due to the fact that multiple fracturing pumps are usually connected in parallel during construction, and the pressure of fracturing fluid is high and the flow rate is fast during fracturing construction, it causes severe vibration of ground pipelines, which in turn leads to frequent occurrence of pipeline fracture accidents at fracturing construction sites. Therefore, there is an urgent need for a high-pressure process...

AI Technical Summary

Problems solved by technology

Due to the fact that multiple fracturing pumps are usually connected in parallel during construction, and the pressure of the fracturing fluid is high and the flow rate is fast during fracturing construction, causing severe vibration of the ground pipeline, which in turn leads to frequent occurrence of pipeline fracture accidents at the fracturing construction site

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