Product Specifications
Product Description
1. Summary
There are two kinds of filtrations during drilling and completion operations. One is the static filtration after stopping the circulation of drilling fluids. The mud cake thickness increases gradually and the filtration rate decreases with time. Another is the dynamic filtration when the mud cake formed is eroded by circulating drilling fluids. There is no a proportional relationship between static filtration and dynamic filtration of differential drilling fluids, therefore, the measurement of dynamic filter loss is particularly important.
The Model HDF-1 HTHP Dynamic Filter Press has overcome the shortages of various traditional static filter presses and enabled the measured results are close to the borehole conditions. It can be used to measure the filtration property of drilling fluids and cement slurry accurately and safely under static and dynamic conditions. The usage of the instrument can provide the reliable data for realizing scientific, rapid, high quality and safe drilling.
Applications: The Model HDF-1 HTHP Dynamic Filter Press is an instrument used to measure the filter loss of drilling fluids and cement slurries used in deep wells. It can be applied in the following aspects:
(1) The experiments of static filtration and mud cake preparation. The temperature range is from room temperature to 232ºC and the maximum of working pressure of mud sample cup is less than 7.1MPa. Pressure difference of filtration is 3.5MPa. The filtration area is 22.6cm2.
(2) The experiments of dynamic filtration and mud cake preparation. The temperature range is from room temperature to 150ºC and the maximum of working pressure of mud sample cup is less than 7.1MPa. Pressure difference of filtration is 3.5MPa. The filtration area is 22.6cm2.
(3) It has double filter screens and is suitable for the measurements of cement slurries.
2. Model
Model: HDF-1
3. The major technical parameters of the instrument
Sequence number | Name | Technical parameter |
1 | Power supply | 220V±5%,50Hz, |
2 | Power | 1.2KW |
3 | Speed regulating range | ~800r/min (stepless speed regulation) |
4 | Working temperature of static filtration tests | ≤232ºC |
5 | Working temperature of dynamic filtration tests | ≤150ºC |
6 | Filtration area | 22.6cm2 |
7 | Safe working pressure of mud sample cup | 8MPa |
8 | Safe working pressure of back pressure tester | 4MPa |
9 | Capacity of sample cup | 500ml |
10 | Capacity of back pressure receiver | 95ml |
11 | Heating speed | The temperature of heater is more than 200 ºC when power supply has been put through for 30 min. |
12 | Heating accuracy | The temperature variation of heater<±3ºC, and the temperature variation of mud sample cell<±2ºC |
13 | Gas source | Nitrogen gas (Not contain the impurities such as oil and water), carbon dioxide. Oxygen is forbidden. |