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OIL FIELD CHEMICALS DIVISION
    1.01 DRILLING MUD DETERGENT
Description :
LIQUIDET DRS is a concentrated Liquid blend of several highly active formulated chemicals which is used as a drilling mud detergent. The product finds application in all water based drilling fluid systems. LIQUIDET DRS reduces the surface tension and it is a powerful wetting agent. The reduction in surface tension promotes the setting of the mud pH and reduced the balling of shale cutting resulting in increase in the penetration rate. LIQUIDET DRS acts as a good emulsifier and lowers the torque and drag.

Physical State : 
The material is a soapy liquid, miscible with water.

Density at 25˚C gm./ml. : 
1.0 to 1.10

Surface Tension 0.25%(v/v) solution of the sample in distilled water at 25˚C dynes/cm : 35.0(max)

pH of 1%(v/v) solution of the sample in distilled water : 
7.5 to 10.5

Emulsion Stability Test :
To 485 ml. of distilled water, add 15 ml., of HSD oil slowly. While stirring , in Hamilton Beach Mixer at medium speed. Then add 1ml. of the sample while stirring and continue stirring for 5 minutes, after addition is complete. Transfer the contents to 500 ml. measuring cylinder and observe phase seperation.
  1. Immediate seperation : shall be nil of HSD oil.
  2. HSD oil seperation after 24 hrs. at room temp. : shall be 5 ml (Max).
Mud Lubricity Test :
It shall be 0.20 (Max)

Foaming Tendency Test : 
Increase in volume due to foaming : 5% max.

Dosage : 
It is recommended to use 0.02 to 0.04 U.S. gallons per barrel of mud depending upon the properties required.

Packing : 
200 Litres HDPE sea – worthy barrels.

Handling & Precautions : 
Liquidet DRS is a mildly alkaline liquid quite safe to handle. However, it is recommended to use gloves, aprons and goggles , while handling LIQUIDET DRS. In case of accidental spillage on skin, wash with plenty of water

   1.02 SCALE INHIBITOR II
Description :
Sea water has an average salt content of 3.5%. in addition t these, sea water contains about 65 ppm bromine, 13 ppm strontium and trace amount of many other elements. The alinity differences are found to exist between oceans, but the proportion of dissolved constituents remains approxiamately same. Sea water is frequently needed by the tide water plant for cooling water and as a source of water for water flood projects.

Strontium sulfate scale has not received the attention that gypsum or barite scales have but in some areas, celestite may be a major problem. Strontium , this alkaline earth metal forms a sparingly soluble compound with sulfate solubility of stantium sulfate in water is 114 mg/lit at 25ºC. this is less than calcium sulfate which is 2630 mg/ht. expressed as CaSO4 , 2H2O and more than barium sulfate which has solubility of 2.3 mg/lit.
Therefore it is very necessary to take care of strontium sulfate scale in its scale prevention programme.

Chemical Composition :
Polyelectrolytes, organo phosphorus compounds and corrosion inhibitors.

Physical state : 
 Colour , Colourless white liquid.

Specific Gravity : 1.25 - 1.35

Specifications of Scale Inhibitor :

1.

 Physical requirement will be free flowing liquid at  ambient temperature(18 - 30ºC) free from foreign matter. 

2.

 Miscibility with sea water will be completely miscible and compatible with sea water and formation water.

3.

 Compatibility Test  will pass compatibility test when used in combination with other water flood  chemicals such as polyelectrolytes, defoamers, oxygen scavengers, corrosion  inhibitors and bactericides.

4.

 Performance Test  

(i)

 Calcium carbonate scale  solution a & b (compo-  sitions given below)  containing scaling ions are mixed in presence of   10mg/litre of scaled  inhibitor and placed for   18 hrs. at 65ºC,  percentage scale inhibition should be 98% min.

(ii)

 Strontium sulphate scale  When two incompatible solutions a & b (composi- tion given below) containing scaling ions, are  mixed in presence of 10 mg per litre of scale inhibitor,  placed for 18 hrs. at 65 ºC , the percentage scale inhibition  will be 98% (min) for  strontium sulfate incompatible  solutions are :

5.

 Packing lacquer coated M.S.Drums, capacity 55 gallons each drum.
   1.03 ACID CORROSION INHIBITOR GRADE II
Description :
Acids are generally used in oil and gas wells to stimulate the Oil or Gas flow from the well and to remove incrustations in the wells. Acids , preferentially, hydrochloricn acid is are forced under high pressure through the hole into the rock formation to produce fracture around the hole. About 10 -15 % of hydrochloric acid is generally used for producing fracture. When the deposit is calcareous.

When such a large quantity of hydrochloric acid is used, it is needless to say that well equipment should be protected from corrosion by use of inhibitor.
Acid corrosion inhibitor formulated by Deltamike is an acid corrosion inhibitor which is stable upto 120ºC.

Chemical Composition :
It is a mixture of organic alophatic.

Physical Properties

Colour Dark Blue.
Odour  Ammoniacal odour
Specific Gravity 1.06 - 1.08
Solubility Soluble by forming some haziness in 15% HCl

Physical State :
Material should be homogemous, organic liquid, free from visible impurities.

Qualitative Test :
Should be negative for presence of Arsenic.

Pour Point, ºC
12.0 (Max).

Corrosion Test :

Pressure , PSI  1000
Test temperature, ºC  120 ± 2 ºC
Condition of test  Static
Duration of test, hours. 6
Acid volume/test coupon 75
surface area, ml/sq/inch
Type of Steel N - 80
Type of Acid Hydrochloric Acid (15% w/w)
Conc. Of Inhibitor, ml/lit. 30
Corrosion rate without pitting, 0.224gm/cm² (Max).

Handling & Precautions :
Highly alkaline !! use gloves,nose mask and goggles while handling. At the time of dosing Acid Corrosion Inhibitor to HCl , may produce white fumes of ammonium chloride which are harmless. It is advisable to dilute acid corrosion inhibitor first with water & then pump hydrochloric acid into it.

    1.04 OIL LINE CORROSION INHIBITOR 
Description :
In the oil well drilling, pipelines and flowlines are often found to take in problem of severe corrosion. If the flow velocity is less than required for turbulent flow, liquids will not contact top area. In mot cases free liquid moves along the bottom of pipe. Depending upon velocity the layer may be both condensate and water or as discrete layers of oil and water.
To protect the pipelines from the corrosion, - CORONIL - OL -  is been formulated to provide a tough film.

Chemical Composition :
It is composition of organic specified amines with dispersant.

Specification :
Colour  Light yellow to Dark brown viscous liquid.
Specific Gravity 1.00  1.05
Solubility Soluble in water, sea water & formation water in Proportion.
Toxicity  Low
Physical State :
The material, will be free flowing, homogenous liquid free from visible impurities and suspended solids.

Compatibility & Emulsification Test :
The material will be compatible with crude oil * mix(140 ml. of crude oil with 60 ml of AR grade Xylene and brine corrodant, shall not form anemulsion at 24 +/- 2^ C Iinterface sludge pad thickness will not be more thn 5% after five hrs.

Stability Test : 
The material shall be heated in a well sealed glass stoppered measuring cylinder at 80 +/ - 2^C, for 2 hrs. in lab. Oven. Neither precipitation nor heterogenous layers shall be observed, on cooling at ambient temperature and mixing after one hour.

Test Conditions :-
1) Corrodant Media :

  1. It consists of 3.2 % Sodium Chloride (LR) solution in distilled water having dissolved Carbon Dioxide content in the range of 1250 +/- 50 ppm at 24^C.
  2. Take 140 ml. untrated *crude oil, and 60 ml. of Xylene (AR) to crude oil.
  3. The ratio of (a) and (b) shall be 90 : 10 and total volume shall be 150 ml.
Metal Coupons :
The coupons shall be of API 5L - Gd Bsteel with approx, size of 30x25x3 - 4mm of thickness (total surface area of all sides taken together shall be around 18 +/- 2 cm.sq.). The surface finish shall be to 300 emery grit,free pits & scratches.

Test Temperature : 
 50 +/-2^C

Corrosion Inhibitor Dose : 
35 ppm(W/V)

Exposure Period :
A. 168 hrs. for static test.
B. 24 hrs. for dynamic test.

Test results :
80 % (min) for static and dynamic test with  coupons free from pits, scratches on visual  inspection.

Handling Precautions : Safe to handle. Do not take internally.

    1.05 GAS LINE CORROSION INHIBITOR (H2S)
Description :
CORONIL 35 is an Oil soluble water dispersible semipolar organic inhibitor,which is very effective for sweet (CO2) or Sour (H2S) gas condensate wells and sweet and sour oil wells.

Physical State : 
The material is a free flowing homogenous liquid, free from visible impurities and suspended solids.

Compatibility & Emulsification Tendency : 
The material is compatible with untreated crude oil mix (prepared by mixing 140ml. of crude oil with 60 ml. of AR Grade Xylene) and brine corrodent, shall not form emulsion at 24 ± 2ºC. The interface sludge pad thickness, will not be more than 5% after 5 hours.

Stability : 
The material will be heated in a well sealed glass stoppered measuring sylinder at 120 ± 2ºC for 2 hours. In a laboratory oven. Neither precipitation nor heterogenous layers will be observed , on cooling to ambient temperature and mixing after one hour.

Performance Test : 
Dynamic condition (Wheel Test)

Corrodent Media : 
  1. It consists of 3.2 % sodium chloride ( LR Grade ) solution in distilled water, having dissolved carbondioxide (CO2) content in the range of 1250 ± 50ppm at 24 ± 2ºC. 
  2. Take 140 ml. untreated crude oil add 60 ml. of AR Xylene to the crude oil.
  3. 1450 + 50 ppm of Hydrogen Sulphide gas is generated by taking 1gm of sodium sulphide of 35% purity and to this 4ml. of 8.5 - 9 % (W/V) hydrochloric acid is added, so that over all pH of complete corrodant media remains between 3.0 - 4.0.
  4. Total composition of corrodent shall be 86 ml. of (a) + 10ml. of (b) + 4ml. of 8.5 - 9% HCl + 1gm. Of Na2S of 35 % puriyt. Total volume of test shall be 100ml.
Metal Coupons : 
N -80 steel coupons of sizes 25mm x 25mm x 3 to 4 mm (thickness) approx. and polished to 300 emery grift, free from pits and scratched, (total surface area of all sides taken together shall be 15 ± 1 sq.cm of the coupon).

Test Temperature : 
50 ± 2ºC.

Corrosion Inhibitor Dose (W/V) ppm : 
200

Exposure Period : 
24 hrs.

Results Required :
  1. Inhibitor Efficiency : 80 (Min)
  2. Condition of test coupon after test : the test coupons will be free from pits and scratches on visual inspection.
Dosage :
  1. Continous Method : 50 ppm in oil production which generally do not exceed 250 ppm.
  2. Small batch for tubing : Mix 8 to 20 litres of CORONIL 35 prefered fluid & batch down the tubing. Frequency of treatment depends upon the severity of problems.
  3. Tubing Displacement of large batch method 10% CORONIL  35 to be used.
  4. Dump Boiler Method : 8 to 20 Litres initial dosing followed by 8 to 20 litres every 2 -3 weeks. Well should be shut for 2 – 3 hrs. after treatment.
  5. Circulation and park method: Batch 35 -70 litres of product down annulus & circulate around to leave inhibitor in annulus. 
  6. Squeeze Method : Average concentration of 100000ppm per barrel of lease crude or other hydrocarbon solvent.
 
    1.06 WATER INJECTION CORROSION INHIBITOR (WIN)
Description :
Large quantities of water is been used in the Oil fields for flooding. This water normally contain about 3 - 3.2%. Sodium Chloride because of which water becomes highly corrosive. To prevent this corrosion - CORONIL 505” can be used.

Physical State :
A clear free flowing homogenous liquid at ambient temperature (24 ± 2°C), free from foreign matter.

Miscibility with Sea Water : 
Will be completely miscible in and compatible with Seaand formation water.

Compatibility Test :
Should pass compatibility test when in combination with other water food chemicals such as polyelectrolytes, defoamers, oxygen scavengers, scale inhibitors and bactericides.

Stability Test : 
Stable upto 90 ± 5 °C.

Viscosity of Neat Corrosion Inhibitor :
Viscosity of product will not be more than 200 Cps at 300 rpm at ambient temperature 24 ± 1 °C with fan v.g. meter.

Corrosivity of Neat Product :
Corrosivity of neat product will not be more than 1.0 mpy with API steel material at ambient temperature under openn conditions when exposed for 7 days.

Performance Test :
  1. Static Test :
    When Sea water containing less than 0.1 ppm dissolved oxygen is treated with 20 mg/litre of corrosion inhibitor, the percentage inhibition should be 80% min at 50°C after 7 days exposure in a system isolated from atmosphere under static condition.
  2. Dynamic Test :
    When Sea water containing less than 0.1 ppm dissolved oxygen is treated with 20mg/litre of corrosion inhibitor the percentage inhibition should be 80% min after 24 Hrs. exposure in a system isolated from atmosphere under dynamic test condition (RPM : 24 ± 2).
    The exposed coupons (API - 5LX - Gd.B) will be free from pits and scratches on visual inspection in both static and dynamic tests. 

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