Bentonite Powder Drilling Mud

Bentonite Drilling Mud Additive

 

General Description of Bentonite Powder Drilling Mud

Drilling fluid is a vital element of the drilling process. Any drilling fluid must have common properties that facilitate safe and satisfactory completion of the well.

The most common use of bentonite Powder in drilling fluids. The bentonite in the flush fluid lubricates and cools the cutting tools whilst protecting against corrosion. As the drilling fluid generates hydrostatic pressure in the borehole, it hinders fluid and gas penetration. Although these drilling fluids are also used for simple drilling such as wells, their true potential is only demonstrated for demanding tasks such as drilling for oil and natural gas sources and exploration on drilling platforms.

Bentonite is used as a lubricant/ thickener for drilling fluids. Drilling mud is very important in removing drilling cuttings during the drilling process. When bentonite is mixed with water, it forms a liquid (slurry) that is pumped through the drill stem and exits through the drill head. Drilling mud or gel is used for both cooling and lubrication of the drill bit. It also seals the drill hole and prevents leakage and prevents the walls of the well from collapsing. Best-grade Iran Drilling Bentonite (sodium montmorillonite), which is mainly used as a filter cake control agent and suspension agent, is the suspension agent in freshwater systems and is used in all water-based gas systems

Some other common additives:
include lubricants, shale inhibitors, fluid loss additives (to control loss of drilling fluids into permeable formations). A weighting agent such as barite is added to increase the overall density of the drilling fluid so that sufficient bottom hole pressure can be maintained thereby preventing an unwanted (and often dangerous) influx of formation fluids.

As the drilling fluid generates hydrostatic pressure in the borehole, it hinders fluid and gas penetration. The drilling liquid conveys the drill cuttings to the surface. When the purge pumps have idle periods, the thixotrophy of the bentonite hinders the stone material from dropping back into the drilled shaft. Bentonite is used in drilling mud to lubricate and cool the cutting tools, to remove cuttings, and to help prevent blowouts. Bentonite also curtails drilling fluid invasion by its propensity for aiding in the formation of mud cake.

Drilling Bentonite (API)

The most common use of bentonite is in drilling fluids. The bentonite in the flush fluid lubricates and cools the cutting tools while protecting against corrosion. As the drilling fluid generates hydrostatic pressure in the borehole, it hinders fluid and gas penetration. Bentonite API Grade is used to increase viscosity and reduce fluid‐loss in water‐base drilling fluids. It is a cost‐effective means of achieving viscosity, fluid‐loss control and filter‐cake quality in freshwater and seawater mud.

API specifications for acceptable drilling mud was the base for evaluating the local bentonite. The properties of the local mud can be improved economically by adding some cheep materials to the prepared mud to enhance its viscosity and filtration loss (such as CMC, Drispac polymer, and bentonite extenders). Also, shearing speed can be used as an enhancement method to improve the dispersion rate of the clay suspension, and hence increase viscosity and decrease filtration loss. But, the used shearing speed should be limited to a practical and economical speed.

Usage of Bentonite Powder Drilling Mud

The main uses of bentonite are for drilling mud, binder, purifier, absorbent, and as a groundwater barrier. Bentonite is used in drilling fluids to lubricate and cool the cutting tools, to remove cuttings, and to help prevent blowouts. Much of bentonite’s usefulness in the drilling and geotechnical engineering industry comes from its unique rheological properties.

Quality of Bentonite in Drilling Mud Additive

Pure bentonite should contain only montmorillonite. In practice, because of the declining reserves of high-quality bentonite, other material such as illites, kaolinites, chlorites (all clays), quartz, and feldspar are usually present. Because montmorillonitic clays have the highest swelling capacity (which is responsible for viscosity buildup and the formation of a low-permeability filter cake), the presence of the other materials will have an adverse effect on bentonite quality.

Benefits of Bentonite Powder Drilling Mud

  • Bottom hole cleaning and removal of cuttings to the surface.
  • Controlling high pressure zones.
  • Cooling and lubricating down hole drilling equipment.
  • Forming bore hole wall supporting filter cake.
  • Supporting the drill string and casing weight.
  • Allowing the interpretation of electric logs.

Advantages of Bentonite Powder Drilling Mud Additive

As bentonite contains of 60-80% montmorillonite it provides special properties such as swelling and adsorption.
The triple-layer silicate can absorb an exceptional quantity of water and expands by a multiple of the original size. The inner surface of a gram of bentonite is 400–600 m² normal clay only has 2 m². The swelling and viscosity behavior of bentonite in the presence of water as well as its particularly high inner surface open numerous application options for the mineral.

  • Bentonite extracts the drill cutting from around the bit which is then floated to the surface.
  • Bentonite seals the drill hole against seepage and prevents wall cavities and leakages.
  • Bentonite (Drilling mud) served to cool and lubricate the drill bit.
  • Bentonite form slurry with leakages that is pumped through drill stem and out through drill bit.

Application of Bentonite Powder Drilling Mud

  • Drilling mud (gel) is crucial in the extraction of drill cutting during the drilling processes.
  • Drilling mud (gel) is a major component in well drilling process.
  • Another conventional use of bentonite is as a mud constituent for oil and water well drilling. Its roles are mainly to seal the borehole walls, to remove drill cuttings and to lubricate the cutting head.

Packing of Bentonite Powder

According to customer’s demands.

  • 25 kg Bag, 40 kg Bag, 50 kg Bag,
  • 1.0 MT Jumbo Bag, 1.15 MT Jumbo Bag, 1.25 MT Jumbo Bag.
  • Can be loose bulks in 1*20 FCL 25-27 tons (Lump form)

Specification of Bentonite Powder in Drilling Mud

Technical Data Sheet of API 13 A-Section 9:

Viscometer Dial Reading at 600 rpm30Min
Yield Point/Plastic Viscosity Ratio3 Max
Filtrate Volume15.0 cm3 Max
Residue Greater than 75
Micrometers
4.0 wt. % Max
Packing30 Kg PP/PE, paper Sacks, !Mt Big Bog
UsesAs Viscosifier in Drilling Fluid

Technical Data Sheet of API 13 A-Section 11(ocma):

Viscometer Dial Reading at 600 rpm30Min
Yield Point/Plastic Viscosity Ratio6 Max
Filtrate Volume16.0 cm3 Max
Residue Greater than 75
Micrometers
4.0 wt. % Max
Packing30 Kg PP/PE, paper Sacks, !Mt Big Bog
UsesAs Viscosifier in Drilling Fluid

Technical Data Sheet of Drilling (High yield):

PARAMETER SPECIFICATION
600RPMMin 60
Plastic ViscosityMin 4
Residue of diameter greater than 200mesh (%) Min 6
Percentage of Moisture (%)Min 12

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