Ultra-short radius horizontal well open hole hydraulic sand blasting deep penetration system and penetration method

Abstract

The invention discloses an ultra-short radius horizontal well open hole hydraulic sand blasting deep penetration system and method. The system comprises an abrasive selection unit, an abrasive storage unit, a pressure selection unit, a mode selection unit, a positioning unit and an execution unit. The abrasive selection unit is used for detecting the thickness of a penetrating layer, matching an abrasive ratio corresponding to the thickness of the penetrating layer and generating a burdening table; the abrasive material storage unit performs abrasive material proportioning based on the proportioning list and conveys the proportioning list to the execution unit; the positioning unit detects the positioning position of the execution unit in real time, and when the positioning position is the same as the preset spraying position, an actuator circuit is switched on; the pressure selection unit and the mode selection unit collect working environment information to generate a mode instruction and a pressure instruction after the actuator circuit is switched on; after the execution unit is connected with the circuit, the abrasive is sprayed to the preset spraying position based on the mode instruction and the pressure instruction, and the high-strength abrasive penetrates through the interlayer with certain pressure and displacement, so that the oil increasing effect of the sidetrack horizontal well is improved.

Description

Technical field [0001] The present invention relates to the field of oilfield underground technology, and in particular, ultra-short radius horizontal well bare hydraulic sandblasting deep penetration system and penetration method. Background technique [0002] The ultrashort radius horizontal well is a horizontal well in which a slope is between 100-230 ° / 30m (3.3-7.7 ° / m), which belongs to an ultra-highly high reserve precision targeting technique. However, for the extra low permeable oilfield, although the reservoir can be increased by the ultra-short radius level of the reservoir and the contact area of ​​the reservoir, the density of the reservoir can not be changed, and the production amplitude is limited, in order to improve the amount of oil, usually Take the transformation measures of naked eye fracturing. However, the fracturing technology of the ultra-short radius is naked, since the scale is usually large, it may cause a water rise well after the compaction, and t...

AI Technical Summary

Problems solved by technology

However, the ultra-short-radius open-hole fracturing technology is not suitable for wells with thin interlayers and wells that may cause water cut rise after fracturing because the fracture scale is usually large. Due to intra-layer heterogeneity and geological prediction, some wells in the ultra-short-radius horizontal section did not encounter sandstone or oil-bearing parts, and only need to take reconstruction measures to improve intra-layer connectivity

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