Drilling fluid system name

High temperature complex water temporary liquid blocking system

Matching core finishing agent

Suspension stabilizer XW    Film forming plugging agent FD    High temperature water loss reducer DL    High temperature hydrogel NJ    Inorganic hydrogel HIG-a/HIG-b    Complexing agent HLH-1

System characteristics

1、The temperature resistance is good and the temperature is above 180 °C;

2、The temperature stability is strong and the density difference between the upper and lower density is less than or equal to 0.02g/cm3 after standing at 180 °C for 70d;

3、The performance of pressure plugging is good and the leakage loss rate is 0.4ml/h at 180°C×33MPa×60h;

4、The reservoir protection performance is good;

5、The supporting plugging solution has a good effect on releasing the plugging layer;

6、It has good performance of safety and environmental protection.

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