A temporary plugging ball impact grinding test device and test method for shale gas horizontal well fracturing

Abstract

The invention discloses a temporary plugging ball impact grinding test device for shale gas horizontal well fracturing, which includes a circulating pump, a liquid tank, a sensor, and an impact grinding test part. Standpipe, accelerated collision sub, spiral grinding oil pipe, solid capture and block short connection, the ball blocking return riser is installed downstream of the ball throwing riser, and its two ends are respectively connected with the entrance of the accelerated collision sub and the solid capture and block The short joints are connected, and the outlet of the solid capture and blocking short joint is connected with the liquid tank. The present invention simulates the influence of the equipment and the manifold on the temporary plugging ball by designing the impact and grinding test device, and at the same time designs a cycle experiment structure to meet the long-term test requirements, and can effectively test the deformation of the temporary plugging ball in the manifold. Material performance, optimization of ball-dropping temporary plugging and diversion equipment and technology, and improvement of fracturing efficiency provide indoor experimental basis.

Description

A temporary plugging ball impact grinding test device and test for fracturing of shale gas horizontal wells method technical field The present invention relates to a kind of temporary blocking ball impact grinding test device for fracturing of shale gas horizontal wells, belonging to oil and gas field exploration Development of technical fields. Background technique As a new type of energy, shale gas plays an increasingly important role in my country's energy supply, and shale gas development is also Has been strongly supported by the state. In recent years, the shale gas development technology represented by Fuling around the Sichuan Basin in my country has been gradually completed. Well, hydraulic fracturing has achieved remarkable results as a reconstruction measure. Temporary plugging balls are used to plug the blasthole, and the normal pressure shale gas The experiment was carried out in the re-fracturing of the old well and the old well. The temporary plugg...

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Problems solved by technology

The size of the temporary plugging ball is small, and the gradation with the blast hole is strict. The traditional experiment did not test the impact and grinding effect of the manifold on the temporary plugging ball, so it is impossible to judge whether the temporary plugging ball is deformed when it reaches the bottom of the well; Although the size has changed, it is impossible to judge the influence ratio of the two factors of manifold wear and self-dissolution

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