Coiled tubing multi-system shale oil reservoir coupling transformation method
The invention relates to the technical field of underground operation, in particular to a coiled tubing multi-system shale oil reservoir coupling transformation method, which comprises the following steps of: 1, mounting a high-pressure pulse jet tool string at the lower end of a coiled tubing, lowe...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The invention relates to the technical field of underground operation, in particular to a coiled tubing multi-system shale oil reservoir coupling transformation method, which comprises the following steps of: 1, mounting a high-pressure pulse jet tool string at the lower end of a coiled tubing, lowering the coiled tubing to send the high-pressure pulse jet tool string to a target interval, and then, transferring the high-pressure pulse jet tool string to the target interval; and a nozzle on the high-pressure pulse jet tool string is aligned with a target interval needing to be fractured. Fracturing fluid pumped by a coiled tubing at high pressure is ejected from an underground pulse nozzle to form a pulsating pressure load, and meanwhile, sand-carrying fluid stably pumped into an annular space between the coiled tubing and a casing pipe is subjected to multi-system superposition at a fracturing well section to form an unstable load to act on reservoir rock, so that the rock is cracked and extended at a preset |
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