Figure 1 Photos of filter cake before and after filter press experiments described in Table 6 . More

Photo 1 Drilling Filter-cake solubility using HPHT filter press, 24 hrs at 270 ° F and 400 psi More

Photo 2 Drilling Filter-cake solubility using HPHT filter press, 96 hrs at 270 ° F and 400 psi More

Fig. 2— Pressure vs. time for HTHP filter press experiments at 176°F. More

Fig. 3— Pressure vs. time for HTHP filter press experiments at 120°F. More

Fig. 5— ( A ) Aging cell, ( B ) API HPHT filter press, and ( C ) aging roller oven ( OFI Testing Equipment, Inc 2019 ). More

Fig. 5 Filter–press results of 4 wt% bentonite mud. More

Fig. 3 Schematic of the low-pressure and low-temperature API filter press. More

Fig. 1 Schematic of the HT/HP API filter press test. The drilling mud consists of solid particles and water droplets. More

Fig. 1 Schematic drawing of the dynamic filter press used for the dynamic filtration experiments. M=motor, P=pressure sensor, T=temperature sensor, and N 2 =pressurized nitrogen. More

Figure 1 Schematic of equipment used: 1—API filter press; 2— metering pump; 3—pressure transducers; 4—core holder. More

Figure 3 Filter press equipment. More

Figure 2 Schematic of HP/HT filter press. More

Figure 2 HP/HT filter press. More

Figure 3 operation of the filter press More

Diagram 4 API Filter Press 8 More

Figure 3 (left) Dynamic HPHT filter press. a) Motor. b) Heating Jacket. c) HPHT cell with motor driven shaft. d) Backpressure regulator e) Stepless rotation regulator f) Electronic scale g) Nitrogen gas for system pressure and backpressure h) Water circulation for cooling of motor. (centre) Rotati... More

Fig. 1 Schematic of the API filter press test. The drilling mud consists of solid particles and water droplets. More

Fig. 7 A modified HPHT filter press cell. More