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Filter Cake Cleaner Wellbore Cleaning Chemcals

Completion & Production Chemicals

Filter Cake Cleaner Wellbore Cleaning Chemcals

Filter Cake Cleaner is used in wellbore-cleaning operations,This additive efficiently combine powerful solvents, surfactants, and water-wetting agents to provide excellent surface cleaning.

  • Appearance Clear liquid
  • Flash Point (°C, closed) > 61
  • Cleaning ability≥% 90
  • Application Wellbore-cleaning operations
  • Main capabilities To thin, disolve, disperse mud residue + water wetting of downhole pipe/casing
  • Composition Formulated from various high-efficiency surfactants and other additives

Product introductiondeepClean filter cake cleaner

UB-Filter Cake Cleaner is formulated from various high-efficiency surfactants and other additives. Nontoxic, odorless, and noncorrosive.

UB-Filter Cake Cleaner has strong permeability and can quickly penetrate into the mud cake formed on the wellbore during the drilling process, dispersing and eroding the mud cake, thereby improving. The bonding ability between cement slurry and the contact surface.


Technical Index

Appearance

Clear liquid

Specific Gravity (20 °C, g/cm3)

0.90-0.98

Flash Point (°C, closed)

> 61

Cleaning ability≥%

90

Applications/Functions

downhole equipment debris cleaningUB-Filter Cake Cleaner has strong washing and decomposition characteristics, which can effectively remove and displace polymeric substances in drilling fluid in wells, and effectively improve the bonding ability of cement slurry. 

The exact product concentration and spacer/wash volumes will vary depending on mud type and wellbore conditions. Recommendations fora specific application should be made after consulting YouzhuChem representatives.

Advantages

>This additive efficiently combine powerful solvents, surfactants, and water-wetting agents to provide excellent surface cleaning.
>Powerful dissolving and water-wetting capacity
>It has good compatibility with completion mud.
>Compatible with freshwater, seawater and heavy brines
>Low chemical concentration
>Good cleaning effect on oil-based mud at 100rpm@80℃

Recommended Handling

All personnel handling this material must handle it as an industrial chemical, wearing protective equipment and observing the precautions as described in the Material Safety Data Sheet (MSDS)...(Click to contact for it)

Packaging and Storage

Plastic bucket packaging, 25kg/bucket, or packaging according to customer requirement. Prevent packaging damage during storage and transportation. The storage period is one year.

description2

wellbore cleaning
01

Clean and water-wet surfaces to prepare for completion

The filter cake cleaner additive efficiently combine powerful solvents, surfactants, and water-wetting agents to provide excellent surface cleaning. 

When used in wellbore-cleaning operations, it thins, dissolves, and disperses oil and synthetic-based-mud residue. 

Afterward, it leaves all downhole tubulars and metal surfaces in a water-wet state.

Unmatched Cleaning Power

Our Filter Cake Cleaner stands out with its powerful dissolving and water-wetting capacity. Engineered for wellbore-cleaning operations, this product combines a potent blend of solvents, surfactants, and water-wetting agents. This formulation ensures an aggressive attack on filter cake deposits, which are notorious for complicating drilling and production processes. Just like Deepclean, our cleaner:

Efficiently Dissolves Deposits: The solvents in our cleaner swiftly break down complex filter cake structures, ensuring that even the most stubborn deposits are removed without the need for multiple treatments.
Surfactant Synergy: With a superior mix of surfactants, the cleaner not only aids in the dissolution but also in the emulsification of oil-based mud residues, providing a clean slate for subsequent operations.
Water-Wetting Excellence: Our product enhances the water-wetting properties of the wellbore surfaces, which is essential for ensuring good cement bonding and preventing issues like gas migration during cementing operations.

maintains efficient performance

Deep Clean
We designed the same product, which has passed the test by six-speed rotary viscometer -Fann35s.

Unlike other solvent- and surfactant-based displacement chemicals, the Filter cake cleaner additive maintains efficient performance when the wellbore pressure differential requires weighting in heavy brine. In addition, it is effective over a wide temperature range and is ideal for deepwater applications.
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// Questions when taking weillbore cleaning operations // 1. Why there is a process of displacement of oil- or synthetic-base drilling fluids prior to the start of completion operations

      The displacement of oil-based or synthetic-based drilling fluids (OBM/SBM) before starting completion operations is crucial for several reasons:

01 /

Cement Bond Integrity

To ensure a good cement bond with the formation and casing, the wellbore surface must be clean. OBM/SBM can leave behind residues that prevent cement from adhering properly, which could lead to poor zonal isolation, potential gas migration, and failure of the cement sheath to contain pressure.
02 /

Water-Wetting of Surfaces

Oil- or synthetic-based muds can leave surfaces oil-wet, which is not conducive to the adhesion of cement, which requires water-wet surfaces for optimal bonding. Displacement helps in making the wellbore water-wet, improving cement adhesion.
03 /

Avoiding Contamination

OBM/SBM can contaminate completion fluids, which often include water-based systems. Such contamination can lead to issues like emulsion formation, which might affect the performance of completion tools, packers, and other downhole equipment that rely on specific fluid properties.
04 /

Reducing Corrosion and Scaling

The presence of oil-based fluids can promote corrosion or scaling in downhole tubulars and equipment, especially in the presence of water. Displacing these fluids helps in maintaining the integrity of the metal surfaces and reducing maintenance issues.
05 /

Operational Efficiency

Drilling fluids that are not displaced can interfere with the functionality of completion equipment. For instance, the presence of thick mud can hinder the setting or operation of packers, valves, or screens.
06 /

Formation Damage Prevention

Oil-based muds can invade the formation, potentially causing damage by blocking pore spaces or altering the formation's wettability. This can affect reservoir performance. Displacement helps to mitigate such damage.
07 /

Environmental and Safety Considerations

Handling and disposal of oil-based or synthetic-based muds can be more challenging and costly due to environmental regulations. Displacing these fluids with more environmentally friendly water-based fluids can reduce cleanup costs and environmental impact.
08 /

Compatibility with Completion Fluids

Completion operations often involve fluids like brines, acids, or other chemicals that need to be compatible with the wellbore environment. OBM/SBM might not be chemically compatible, leading to undesirable reactions or precipitation that could obstruct flow or damage equipment.
09 /

Zonal Isolation

Effective zonal isolation, which is critical for controlling fluid movement between different geological zones, depends on a good cement job, which in turn depends on a clean wellbore.
10 /

Economic Considerations:

While the process of displacement might add to the upfront cost, it can prevent more significant expenses later due to poor cement jobs, equipment failures, or reservoir damage.

The displacement process typically involves using spacers, flushes, or specific chemicals designed to clean the wellbore, change its wettability, and prepare it for the cementing or completion operations. This process is tailored based on the mud type, well conditions, and the specific requirements of the completion strategy.

// Questions when taking weillbore cleaning operations // 1. Why there is a process of displacement of oil- or synthetic-base drilling fluids prior to the start of completion operations

      The displacement of oil-based or synthetic-based drilling fluids (OBM/SBM) before starting completion operations is crucial for several reasons:

01 /

Cement Bond Integrity

To ensure a good cement bond with the formation and casing, the wellbore surface must be clean. OBM/SBM can leave behind residues that prevent cement from adhering properly, which could lead to poor zonal isolation, potential gas migration, and failure of the cement sheath to contain pressure.
02 /

Water-Wetting of Surfaces

Oil- or synthetic-based muds can leave surfaces oil-wet, which is not conducive to the adhesion of cement, which requires water-wet surfaces for optimal bonding. Displacement helps in making the wellbore water-wet, improving cement adhesion.
03 /

Avoiding Contamination

OBM/SBM can contaminate completion fluids, which often include water-based systems. Such contamination can lead to issues like emulsion formation, which might affect the performance of completion tools, packers, and other downhole equipment that rely on specific fluid properties.
04 /

Reducing Corrosion and Scaling

The presence of oil-based fluids can promote corrosion or scaling in downhole tubulars and equipment, especially in the presence of water. Displacing these fluids helps in maintaining the integrity of the metal surfaces and reducing maintenance issues.
05 /

Operational Efficiency

Drilling fluids that are not displaced can interfere with the functionality of completion equipment. For instance, the presence of thick mud can hinder the setting or operation of packers, valves, or screens.
06 /

Formation Damage Prevention

Oil-based muds can invade the formation, potentially causing damage by blocking pore spaces or altering the formation's wettability. This can affect reservoir performance. Displacement helps to mitigate such damage.
07 /

Environmental and Safety Considerations

Handling and disposal of oil-based or synthetic-based muds can be more challenging and costly due to environmental regulations. Displacing these fluids with more environmentally friendly water-based fluids can reduce cleanup costs and environmental impact.
08 /

Compatibility with Completion Fluids

Completion operations often involve fluids like brines, acids, or other chemicals that need to be compatible with the wellbore environment. OBM/SBM might not be chemically compatible, leading to undesirable reactions or precipitation that could obstruct flow or damage equipment.
09 /

Zonal Isolation

Effective zonal isolation, which is critical for controlling fluid movement between different geological zones, depends on a good cement job, which in turn depends on a clean wellbore.
10 /

Economic Considerations:

While the process of displacement might add to the upfront cost, it can prevent more significant expenses later due to poor cement jobs, equipment failures, or reservoir damage.

The displacement process typically involves using spacers, flushes, or specific chemicals designed to clean the wellbore, change its wettability, and prepare it for the cementing or completion operations. This process is tailored based on the mud type, well conditions, and the specific requirements of the completion strategy.

// Questions when taking weillbore cleaning operations // 2. Some common problems that can arise during wellbore cleaning

Cleaning the wellbore in an oilfield before cementing is critical for ensuring a good cement bond, which is essential for zonal isolation, well integrity, and preventing issues like gas migration, fluid migration, and corrosion. Here are some common problems that can arise during this process:

01 /

Residual Mud and Contaminants

Oil-based or Synthetic-based Mud (OBM/SBM): These can leave residues that are difficult to remove, reducing the effectiveness of cement bonding. The mud can form a film on the wellbore wall, preventing good adhesion of cement.
02 /

Water-based Mud (WBM)

Oil- or synthetic-based muds can leave surfaces oil-wet, which is not conducive to the adhesion of cement, which requires water-wet surfaces for optimal bonding. Displacement helps in making the wellbore water-wet, improving cement adhesion.
03 /

Formation of Filter Cake

During drilling, a filter cake forms on the wellbore walls to prevent excessive fluid loss into the formation. This cake must be removed or at least thinned to ensure cement contacts the formation directly.
04 /

Temperature and Pressure Variations

Deep wells can have high temperatures and pressures, which can affect the efficiency of cleaning agents and solvents used. Some cleaning agents might break down or lose effectiveness under such conditions.
05 /

Chemical Compatibility

The cleaning chemicals must be compatible with both the mud system used and the cement slurry to avoid reactions that could compromise the cementing process.
06 /

Fluid Incompatibility

Mixing of different fluids (like spacers, flushes, and cement) can lead to precipitation, gelling, or other adverse reactions, which can obstruct flow and leave residues.
07 /

Hydration of Shale or Clays

Water-based cleaning solutions might hydrate or destabilize shale or clay formations, leading to swelling or sloughing which can contaminate the wellbore further or block it.
08 /

Water Wetting

Ensuring that the wellbore surfaces are water-wet is crucial for cement adhesion. If surfaces remain oil-wet, cement might not adhere properly.
09 /

Cleaning Agent Dispersion

Ensuring even distribution of cleaning agents throughout the wellbore, particularly in deviated or horizontal sections, can be challenging and might result in uneven cleaning.
10 /

Time Constraints:

11 /

Cost and Environmental Considerations

12 /

Mechanical Issues

Tools used for mechanical cleaning like brushes or scrapers might not reach all areas, especially in complex well geometries, or might get stuck or damaged.


Addressing these problems often requires a combination of chemical washes, mechanical cleaning, and sometimes pre-flushes or spacers designed specifically for the well conditions. The choice of cleaning strategy would depend on the type of mud used, the geological formation, well design, and operational constraints.