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產品展廳>>項目研發>>儲層巖石動態沖擊能量的傳播與衰減測試分析

高排量水力壓裂、水力振蕩壓裂、脈沖波壓裂、空化壓裂等壓裂技術在施工過程會形成動態沖擊能量,該能量在不同結構(裂縫、縫洞)碳酸鹽巖中的傳播與衰減直接影響人工裂縫的造縫距離及造縫體積,本項目通過明確能量在巖體內的傳播與衰減特性,建立能量與時間、距離的理論關系,為動態破巖裂縫形態的理論研究及脈沖波壓裂量化設計提供有力指導。

裂縫型碳酸鹽巖動態沖擊能量的傳播與衰減實驗。

利用SHPB實驗裝置或輕氣炮加載實驗裝置研究碳酸鹽巖石動態力學行為、應力波的衰減特性及沖擊加載方向的應力應變變化過程;研究新的爆炸加載技術,搭建加載固定裝置,使用水環境加載模擬產生平面沖擊波,調整炸藥的藥量和炸高以及水域邊界來改變加載條件對裂縫型碳酸鹽巖進行動態加載實驗,測得應力波的傳播與衰減實驗數據。

縫洞型碳酸鹽巖動態沖擊能量的傳播與衰減實驗。

探索通過使用高能炸藥為加載源,使用水環境加載模擬產生平面沖擊波和空中爆炸來模擬近似球面波對縫洞型碳酸鹽巖進行動態加載實驗,測得應力波縫洞型碳酸鹽巖中的傳播與衰減實驗數據;利用高速攝影測得在動態加載下縫洞型碳酸鹽巖石的破碎過程和裂縫擴展歷程。

裂縫型及縫洞型碳酸鹽巖動態沖擊能量傳播與衰減理論分析。

通過裂縫型和縫洞型碳酸鹽巖在動態實驗中測得實驗數據,分析沖擊能量衰減規律;結合理論分析建立預測碳酸鹽巖石爆炸沖擊能量衰減特性表征方式。

研發的軟件是基于對裂縫性和縫洞型碳酸巖的動態沖擊實驗數據并結合理論研究基礎上開發的,能夠預測碳酸巖爆炸沖擊能量衰減特性。由于研發該軟件要求有深厚的爆炸力學的基礎理論及爆炸實驗技術能力,具有較高的門檻,因此該軟件是首個直接針對縫洞型碳酸巖的動態沖擊能量計算軟件,目前還未有同類產品與之競爭。

Products>>Project Development>>Test and Analysis of Dynamic Impact Energy Propagation and Attenuation of Reservoir Rock

High displacement hydraulic fracturing, hydraulic oscillatory fracturing, pulse wave fracturing, cavitation fracturing and other fracturing techniques will form dynamic impact energy during construction process. The propagation and attenuation of this energy in carbonate rocks with different structures (cracks, fractures and holes) directly affect the fracture distance and fracture volume of artificial cracks. By defining the propagation and attenuation characteristics of energy in rock mass, the theoretical relationship between energy and time and distance is established. It provides powerful guidance for the theoretical study of dynamic rock fracture morphology and the quantitative design of pulse wave fracturing.

Experimental study on dynamic impact energy propagation and attenuation of fracture carbonate rocks

The dynamic mechanical behavior of carbonate rock, the attenuation characteristics of stress wave and the change process of stress and strain in the direction of impact loading are investigated by using SHPB experimental device or light gas gun loading device. The new explosive loading technology is studied, the loading fixing device is built, the plane shock wave is generated by water environment loading simulation, the quantity and explosion height of explosive and the boundary of water area are adjusted to change the loading conditions, the dynamic loading experiment of fracture carbonate rock is carried out and the experimental data of stress wave propagation and attenuation can be measured.

Experiment of dynamic impact energy propagation and attenuation of fracture-hole carbonate rocks

By using high energy explosive as loading source, plane shock wave and air explosion are used to simulate the dynamic loading experiment of approximate spherical wave to fracture-hole carbonate rock by using water environment simulation, and the experimental data of propagation and attenuation in fracture-hole carbonate rock are measured, the cracking process and fracture propagation process of fracture-hole carbonate rock under dynamic loading are measured by high-speed photography.

Theoretical analysis of dynamic impact energy propagation and attenuation of fracture and fracture-hole carbonate rocks

Based on the experimental data of fracture and fracture-hole carbonate rock in dynamic experiment, the law of impact energy attenuation is analyzed, and the characterization method of predicting explosion impact energy attenuation characteristics of carbonate rock is established based on theoretical analysis.

The developed software is based on the experimental data of fracture and fracture-hole carbonate dynamic impact and combined with theoretical research, which can predict the impact energy attenuation characteristics of carbonate explosion. Because the research and development of the software requires profound basic theory of explosion mechanics and explosion experiment technology ability, so it is hard to exploit. The software is the first dynamic impact energy calculation software directly aimed at fracture-hole carbonate rock, and there is no competition with the same kind of products at present.

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