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Operate all type off filtration units (Filter press, Diatomit filtration unit, Dual pod unit using bags and filters, Slop units & Dewatering units)
Operate floculation and coagulation compact units from different companys
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Dewatering/Flocculation
The Flocculation/Dewatering process greatly reduces the amount of dilution and eliminates excessive waste volumes normally associated with the “dump and dilute” method. All drilling/completion fluids will be recycled and reused (closed loop), the liquid effluent of the flocculation/dewatering process will either be reused as the base for mixing new drilling fluids, or directly diverted back (controlled and without changing any DF parameters) into the mud system.
- Site/rig surveys – professionally conducted site/rig surveys, survey reports with findings & recommendations
- Lab & field testing of WBM drilling & completion fluids (selection of most suitable Coagulants and Flocculants)
- Consumption calculations/estimations, chemical supply and logistics
- Commercials/budgeting
- Site/rig setups & layouts – based on site/rig surveys
- Start up support and execution of projects (if required)
- Daily and project reporting
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Why dewatering? Dewatering benefits
- The mechanical liquid solids separation capability of a centrifuge is limited to 6 – 10 microns, depending on centrifuge type
- Dewatering overcomes this limitation by “flocculating” the feed mud by pre-treating chemically, to increase the “effective particle size” of the suspended solids
- Effective utilization of the dewatering system can reduce disposal costs by more than 40% - field proven
- Proven increased overall Solids Control Efficiency of up to 85% - according to API 13
- Improved mud rheology
- Improved rate of penetration, ROP
- Reduced pipe sticking (low solids content)
- Reduced lost circulation
- Reduced formation damage
- Reduced mud costs – elimination of “dump and dilute” to control mud properties/specs
- Reduced water consumption
- Ability to achieve stringent discharge compliance
- Reduced overall well costs $$$$
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Coagulation and Flocculation
Coagulation and flocculation are processes used to remove suspended and fluid additives from water-based drilling fluids. Finely dispersed solids – colloids – suspended in water are stabilized by negative electric charges on their surfaces, causing them to repel each other. Since this prevents these charged particles from colliding to form larger masses, called flocs, they do not settle. To assist in the removal of colloidal particles from suspension, chemical coagulation and flocculation are required. These processes are a combination of physical and chemical procedures. Chemicals are mixed with water to promote the aggregation of the suspended solids into particles large enough to be settled or be removed.