Fracturing pulse sand filling system with ultrahigh flow conductivity and method for operating fracturing pulse sand filling system
A technology of diversion capacity and pulse, which is applied in the field of oil and gas field development and research, can solve the problems of increasing equipment and machine maintenance, repair costs, inability to realize proppant slug injection, pressure suppression of sand mixing vehicles, etc., and achieve reliable measurement and control systems , avoid damage and hysteresis effect, improve the effect of relative life
Active Publication Date: 2013-09-25
CHINA UNIV OF PETROLEUM (EAST CHINA)
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The invention relates to a fracturing pulse sand filling system with ultrahigh flow conductivity. The fracturing pulse sand filling system comprises an external control unit, an internal controlled unit, an external fracturing pump truck unit, a sand mixing truck and a fluid storage tank. Fracturing sand-mixed fluid is accommodated in the sand mixing truck, fracturing base fluid is accommodated in the fluid storage tank, the external control unit controls the internal controlled unit, so that the sand-mixed fluid in the sand mixing truck and the base fluid in the fluid storage are alternately pumped into the external fracturing pump truck unit at intervals, and the sand-mixed fluid and the base fluid are finally alternately pumped into underground exploitation cracks at intervals by the external fracturing pump truck unit. The fracturing pulse sand filling system has the advantages that propping agent slugs added with fibers can be injected in a pulse manner under the control of the system, the flow conductivity of the prop cracks is greatly improved, a lag effect due to continuous opening and closing of an existing sand mixing truck is prevented, damage to the sand mixing truck is reduced, and pressure building during propping agent injection can be effectively prevented by the system.
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Property | Measurement | Unit |
Nominal diameter | 101.6 | mm |
Nominal pressure | 4.0 | mPa |
tensile | MPa | |
Particle size | Pa | |
strength | 10 |
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