Filter Cores for Dynamic HPHT® Filtration System
Designed for conducting filter cake formation and permeability analysis
Fann engineers designed special filter cores for the Model 90 Dynamic HPHT Filtration System to conduct filter cake formation and permeability analysis.
The filter medium is a thick-walled cylinder with rock-like characteristics to simulate the build-up of filter cake on the formation. This provides more accurate filtration measurements. The entire internal length is subjected to pressurized fluid (sample). Filtrate flows through the core radially from the inside to the outside.
The filter medium is available in varying porosities and permeabilities to simulate down-hole formations.
Filter Cores are supplied in boxes of 10 cores of the same porosity.
| API Designation | New (Hg) Data | Old (Air) Data |
Fann Material No. |
|---|---|---|---|
12 |
12 µ |
5µ |
210545 |
20 |
20 µ |
10 µ |
210546 |
40 |
40 µ |
20 µ |
210547 |
50 |
50 µ |
35 µ |
213483 |
55 |
55 µ |
60 µ |
210548 |
120 |
120 µ |
90 µ |
210549 |
none |
|
150 µ |
210550 |
none |
|
190 µ |
210551 |
Ceramic Filter Core Specifications
Nominal Core Dimensions |
Maximum Recommended Values | ||
| Inside Diameter | 1.014 +/- 0.005 | Mud weight, lb/gal (sg) Rate, mL/min | CDI |
| Outside Diameter | 1.510 +/- 0.020 | 9-12 (1.08-1.44) 0.22 |
25 |
| Length | 1.114 +/- 0.005 | 12-15 (1.44-1.80) 0.18 |
20 |
15 or greater (1.80 +) 0.14 |
16 | ||
Filter Cores
