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Limestone Powder

Limestone Powder

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Технические характеристики
  • ПроизводительУзбекистан
  • БрендTNGGS
Описание

 

LIMESTONE POWDER

 

Limestone powder is the finely-dispersed product obtained by mechanical calcareous ore degradation. Powder appearance: stone.

Proposed new and conventional limestone weighting agent consists of carbonate rocks and has the following chemical formula CаСО3.

Limestone powder density is equal to 2700 kg/m3 and has property to be dissolved completely in hydrochloric acid. Such advantage of limestone powder provides retention of natural reservoir characteristics of productive formation. As a result of this, oil and gas well productive capacity increases. Weighted drilling muds with a density of 1500-1600 kg/m3 can be prepared by means of limestone powder.

Limestone powder, due to the physiochemical parameters and structural features, has a number of the following qualities which distinguish it from chalk and other varieties of calcium carbonate:

- high calcium carbonate concentration (more than 98.0-99.0%);     

- high grain strength;

- low porosity and water absorption;

- high refractivity;

- low content of coloring iron, manganese, titanium and cobalt oxides, and, consequently, high whiteness index;

- low content of water-soluble salts;

- high inorganic acid solubility;

- low resistance to UV radiation.

 

Limestone Powder Weight Ability Assessment Laboratory Findings:

 

Drilling Mud Composition

ρ

kg/m3

Т500 ,

s

F,

cm3 /30min

Тк ,

mm

рН

Water 1000 ml + NaOH 3 g + Na2CO3 3 g + Shursuy clay 100 g + CMC 5 g (Namangan)

1080

18

5.0

1.0

11.0

No.1 + 40% limestone powder

1230

35

5.0

1.0

11.0

No.1 + 60% limestone powder

1330

45

5.0

1.0

11.0

No.1 + 80% limestone powder

1410

60

5.0

1.0

11.0

No.1 + 100% limestone powder

1500

80

5.0

1.0

11.0

No.1 + 120% limestone powder

1550

100

5.0

1.0

11.0

No.1 + 140% limestone powder

1600

120

5.0

1.0

11.0

 

As completed laboratory testing table data show, fresh and salt drilling muds with a density of 1500-1600 kg/m3 can be prepared by means of carbonaceous weighting agent – limestone powder.

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