Completion Fluids | Care

for the Oilfield

Industry As the oilfield industry is soaring new heights

with each passing day owing to the increase in

demand of the petroleum based products

today, simultaneously, the need of completion

fluids is also escalating with same pace.

Amongst the completion fluids, the most

commonly used components are Completion

14.2™, Completion 12.5™ and Completion

19.2™. Consequently, there is a rising

demand for the preparation of these chemical

components or rather the completion fluids in

order to cater to the needs of the oilfield

industry for carrying out the drilling

operations required in oil and gas exploration

projects.

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Useful Fluids:

Generally, the brine solutions of zinc, sodium and calcium blended with bromides

and chlorides are useful for such oil drilling purposes because of the high density

and solids-free nature of such solutions. Quite a similar composition is therefore

maintained in the preparation of the completion fluids.

Specification of Completion 14.2™:

The Completion 14.2™, which is chemically a calcium bromide solution (52%) is

a common completion fluid used extensively as a completion and work-over fluid

for controlling the wellbore pressures during the upstream oil and gas exploration

operations. It can be used as a single solution as well as mixed with calcium

chloride and/or zinc/calcium bromide in order to get a clear and solids-free fluid

that is prepared over a varied range of density and crystallization temperatures. It is

usually a colorless liquid and sometimes a light yellow transparent liquid having a

specific gravity of 1.70 grams/cm.cube and a density of 14.2lbs/gal. It is a water

soluble component and is also available as dry powder on request.

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Fluids for Drilling Purposes:

Another Major Completion Fluids popularly used in Oil and Gas Drilling

exploration projects is the Completion 12.5™ fluid. Chemically, this is sodium

bromide solution (45%), having a formula of NaBr.nH2O. Apart from serving as a

completion and work-over fluid for drilling purposes, its other characteristics

include:

It is colorless, odorless and transparent liquid, resembling sodium chloride

solution.

It is used as a single salt and is applicable in those purposes where the

density requirement ranges within 8.4lbs/gal to 12.8lbs/gal and where the

formation waters have high amount of bicarbonate and sulfate ions.

In addition to being used as a single-salt solution, this can also be used in

collection with the sodium chloride solutions to get an optimum density

range of 12.8lbs/gal. In fact, keeping in mind the economic factors for the oil

and gas exploration projects, the NaBr/NaCl multi-salt solution is more

beneficial than that of the single-salt counterpart.

Powder form of the chemical can be given on request.

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Apart from the above two, there is another Completion Fluid in the run, which is

known as the Completion 19.2™. It is actually zinc bromide solution and

chemically composed of two types of salts, namely the Calcium Bromide & Zinc

Bromide Solutions. Similar to the other completion fluids, this is also a clear and

solids-free liquid having a density of around 19.2lbs/gal. Along with these features,

it is also non-damaging, thermally and chemically stable and can be used as a

multi-salt additive.

Hence, all these completion fluids are in high demand and therefore manufactured

in plenty.