A cementing mud blending device, its blending method, and its cleaning method
A mud and cementing technology, which is used in cement mixing devices, liquid batching supply devices, clay preparation devices, etc., can solve the problem that equipment cannot be used as backup for each other, and achieves the advantages of improving cementing effect, improving deployment efficiency and prolonging service life. Effect
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Embodiment 1
[0049] A cleaning method for a cementing mud preparation device, cleaning the above cementing mud preparation device, comprising the following steps:
[0050] Step 1, open the fifth valve 9, the clean water pump 8, the fourth valve 7 (or open the ninth valve 15, the second clean water pump 14, the sixth valve 10), the clean water regulating valve 23-1, the twenty-first valve 35 , the first sand pump 31, the fourteenth valve 22, the twenty-second valve 37, the second sand pump 38, the seventeenth valve 26, the third valve 6; the water in the metering water tank 1 passes through the first clear water pump 8 in sequence Or the second clean water pump 14, the high-energy mixer 23, the mud mixing tank 36, the first sand pump 31 or the second sand pump 38 enter the high-pressure plunger pump 18, and finally return to the metering water tank 1 to complete the maintenance of the entire cementing pipeline. cleaning; the cleaning path is "metering water tank 1 - first clean water pump 8...
Embodiment 2
[0053] Step 1. Open the twentieth valve 34, the first sand pump 31, and the thirteenth valve 21, and the water in the metering tank 1 passes through the twentieth valve 34, the first sand pump 31, the thirteenth valve 21, and the mixed The device 23 enters the mixing tank 36, and the pressurized and high-velocity clear water produced by the first sand pump 31 brings the agglomerated cement slurry in the pipeline and the mixer 23 into the mixing tank 36, and the mixer 23 is first Cleaning; the cleaning path is "metering water tank 1 - first sand pump 31 - high energy mixer 23 - mud mixing tank 36 - first sand pump 31 - outlet 29";
[0054] Step 2. After cleaning, close the twentieth valve 34 and the twenty-first valve 35 , open the twelfth valve 20 , and discharge the waste liquid through the outlet pipe 29 .
[0055] Step 3. If the mixer 23 is agglomerated and the first sand pump 31 cannot be completely flushed, open the fifth valve 9 or the ninth valve 15, the first clean wat...
Embodiment 3
[0057] Step 1. Open the twentieth valve 34, the first sand pump 31, the twelfth valve 20, and the density meter 28, and clean the density meter 28. When the density meter 28 displays a reading and the value is stable, it means that the density meter 28 is cleaned. No blockage; the cleaning path is "measurement water tank 1 - first sand pump 31 - density meter 28 - drain port 29". And discharge the waste liquid through the outlet pipe 29, then close the twentieth valve 34, the first sand pump 31;
[0058] Step 2, the agglomerated cement slurry may remain in the channel of the density meter 28, causing the channel of the density meter 28 to narrow, the flow fluctuation of the cement slurry in the channel becomes larger, and the display reading is abnormal; then open the fifth valve 9 or the first Nine valves 15, the first clean water pump 8 or the second clean water pump 14, the fourth valve 7 or the sixth valve 10, and the eighteenth valve 27 clean the density meter 28 again an...
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