Title:
PULSED LASER WAVE AND HYDRAULIC FRACTURING COMPOUNDED REFORMING METHOD AND APPARATUS FOR PHYSICAL ATTRIBUTE OF RESERVOIR
Document Type and Number:
WIPO Patent Application WO/2020/006973
Kind Code:
A1
Abstract:
A pulsed laser wave and hydraulic fracturing compounded reforming apparatus for a physical attribute of a reservoir, comprising a continuous oil pipe (200), an ejecting apparatus, and a pulsed laser wave transmitter (400). The continuous oil pipe (200) is used for injecting a liquid with high static pressure until the internal pressure of the continuous oil pipe reaches a hydrostatic pressure threshold and the internal pressure is kept unchanged. The ejecting apparatus is connected to the tail end of the continuous oil pipe (200) and is used for, when the internal pressure of the continuous oil pipe (200) reaches the hydrostatic pressure threshold, continuously ejecting the liquid with high static pressure out to generate hydraulic fracturing. The pulsed laser wave transmitter (400) is wrapped in the ejecting apparatus and is used for generating laser waves with a repeated frequency in the liquid with high static pressure, the laser waves radiating outward to generate pulsed laser wave fracturing. Also disclosed is a pulsed laser wave and hydraulic fracturing compounded reforming method for a physical attribute of a reservoir. By compounding hydrogalvanic pulsed laser waves and hydraulic fracturing, the present reforming apparatus and method induce more micro fractures around main fractures formed by hydraulic fracturing, and implement better connection with natural fractures of a rock formation, so as to effectively construct a multi-dimensional reservoir seepage network comprising hydraulic fractures, natural fractures, micro fractures, and the like, thereby significantly improving the yield of an oil well.
Inventors:
LIU YI (CN)
LIU SIWEI (CN)
LI ZHIYUAN (CN)
LI HUA (CN)
LIN FUCHANG (CN)
LIU SIWEI (CN)
LI ZHIYUAN (CN)
LI HUA (CN)
LIN FUCHANG (CN)
Application Number:
PCT/CN2018/118084
Publication Date:
January 09, 2020
Filing Date:
November 29, 2018
Export Citation:
Assignee:
UNIV HUAZHONG SCIENCE TECH (CN)
International Classes:
E21B43/26; E21B28/00
Foreign References:
| CN104832149A | 2015-08-12 | |||
| CN105370257A | 2016-03-02 | |||
| CN105484720A | 2016-04-13 | |||
| CN105298462A | 2016-02-03 | |||
| CN105525901A | 2016-04-27 | |||
| CN105673067A | 2016-06-15 | |||
| CN107869342A | 2018-04-03 | |||
| CN108049852A | 2018-05-18 | |||
| RU2373387C1 | 2009-11-20 |
Attorney, Agent or Firm:
HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY PATENT AGENCY CENTER (CN)
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