US 12,331,601 B2
Device and method for continuous mixing of solid drag reducer
Pengfei Chen, Beijing (CN); Honggang Chang, Beijing (CN); Gang Xiong, Beijing (CN); Youquan Liu, Beijing (CN); Yadong Zhang, Beijing (CN); Chengmei Zhou, Beijing (CN); and Jia Liao, Beijing (CN)
Assigned to PetroChina Company Limited, Beijing (CN)
Filed by PetroChina Company Ltd., Beijing (CN)
Filed on Dec. 9, 2021, as Appl. No. 17/546,098.
Application 17/546,098 is a continuation of application No. PCT/CN2021/070235, filed on Jan. 5, 2021.
Claims priority of application No. 202010017709.8 (CN), filed on Jan. 8, 2020.
Prior Publication US 2022/0098941 A1, Mar. 31, 2022
Int. Cl. E21B 21/00 (2006.01); B01F 21/20 (2022.01); B01F 35/21 (2022.01); B01F 35/221 (2022.01); B01F 35/71 (2022.01); E21B 21/06 (2006.01); E21B 43/27 (2006.01); B01F 101/49 (2022.01)
CPC E21B 21/062 (2013.01) [B01F 21/20 (2022.01); B01F 35/2111 (2022.01); B01F 35/2211 (2022.01); B01F 35/712 (2022.01); B01F 35/71761 (2022.01); E21B 43/27 (2020.05); B01F 35/7181 (2022.01); B01F 2101/49 (2022.01)] 17 Claims
OG exemplary drawing
 
1. A device for continuous mixing of a solid drag reducer, comprising a raw material storage device, a pneumatic raw material delivery device, a power device, a flow testing device, a dissolving device, and a water supply device, wherein:
the raw material storage device is for supplying a solid drag reducer to the pneumatic raw material delivery device;
the pneumatic raw material delivery device is connected respectively to the raw material storage device, the power device, and the flow testing device, for delivering the solid drag reducer in the raw material storage device to the dissolving device with compressed air as a power source;
the dissolving device is connected to the flow testing device, for dissolving the solid drag reducer;
the dissolving device is a gear pump, a plunger pump, or an emulsification pump;
the water supply device is connected to the dissolving device, and is used to provide the dissolving device with water for dissolving the solid drag reducer;
the power device is for supplying the compressed air as the power source to the pneumatic raw material delivery device;
the flow testing device is disposed between the pneumatic raw material delivery device and the dissolving device, for measuring a flow rate of the solid drag reducer delivered from the pneumatic raw material delivery device to the dissolving device and adjusting a delivery rate of raw material from the pneumatic raw material delivery device according to the flow rate;
the pneumatic raw material delivery device is connected to the raw material storage device via a first pipeline; the pneumatic raw material delivery device is connected to the power device via a second pipeline; the pneumatic raw material delivery device is connected to the flow testing device via a third pipeline; the dissolving device is connected to the flow testing device via a fourth pipeline; the dissolving device is connected to the water supply device via a sixth pipeline;
the first pipeline has a pipe length of 0.2 m to 0.5 m, and a pipe diameter of 4 mm to 8 mm; the second pipeline has a pipe length of 1 m to 3 m, and a pipe diameter of 1 mm to 5 mm; the third pipeline has a pipe length of 1 m to 2 m, and a pipe diameter of 8 mm to 15 mm; the fourth pipeline has a pipe length of 2 m to 3 m, and a pipe diameter of 8 mm to 15 mm; the sixth pipeline has a pipe length of 1 m to 10 m and a pipe diameter of 10 mm to 20 mm;
the pneumatic raw material delivery device includes a centrifugal ventilator, a centrifugal blower, a turbo-type air compressor, or a pneumatic diaphragm pump;
the power device includes an air compressor;
the flow testing device includes a testing device and a display device; and
the device for continuous mixing of the solid drag reducer further comprises a sand mixing device connected to the dissolving device, wherein the sand mixing device is used to inject the solid drag reducer dissolved in the dissolving device into a reservoir to be fractured.