ACT RESPONSIBLY
OILFIELD BIOTECH
As the global oil industry is closely looking at environment friendly processes and ecological sustainability, it is becoming more and more relevant to embark on biological substitutes against harsh chemicals, in the crude extraction process.
Starch, Xanthan, Cellulose, or Guar based Biopolymer used in clean drill-in fluid, would deposit an impermeable filter cake on the borehole wall. This barrier must be completely broken in order to maximize production rates.
Since harsh chemicals like Acids and oxidizers react locally, they often fail to do so, leaving residues plugging screens, drastically reducing production and effecting the quality by contiuous bleeding.
Epygen offers PETROLIZE range of Enzymatic Products for Oilfield Mud/Filter-Cake Breaking in an efficient and Biological way.
PRODUCTS
Name
Petrolize® HTA
Description
Ultra High temperature Stable Enzyme System of Bacterial Alpha Amylase to efficiently break down Starch-Xanthan based Filter-Cakes in 240 Deg F and higher…
Enzymatic Mud Breakers for Starch-Xanthan Muds
Depending on the nature of clean Drill-in fluid used, Starch, Xanthan, and Sized Calcium Carbonate / Salt based drill-in fluid would deposit an impermeable filter cake on the borehole wall. This barrier must be completely broken in order to maximize production rates. Harsh chemicals like Acids and oxidizers often fail to do so leaving residue to plug the screens and drastically reduce production.
Epygen PETROLIZE HTA is a High Temperature stable Alpha Amylase, which, depending on the well temperature will break down starch into simple sugars within 1 to 10 hours time, breaking down the integrity of the filter-cake evenly, allowing the bridging agent to disperse efficiently and cleanly.
This property of efficient but specific hydrolysis results in a breaker that can be pumped evenly down the length of the wellbore, without localized reactivity, as it systematically liquefies the filter-cake and finally promotes even and unrestricted drainage of the reservoir.
Name
Petrolize® CL
Description
Cellulase Carbohydrase Enzyme system to break down Filter-Cake formed by PAC or Cellulose based mud systems.
Enzymatic Mud Breaker for Cellulose Based Mud
To efficiently hydrolize Cellulosic component used in the clean Drill-in fluid, Epygen developed PETROLIZE CL, a medium to high temperature stable Cellulase (Endo-glucanase and Cellobiohydrolase) which, depending on the well temperature and pH will break down PAC component or, cellulosic biopolymer of the mud damage into simple sugars within 1 to 10 hours (proposed 5 hours shut in period) time, breaking down the integrity of the filter-cake evenly, allowing the bridging agent to disperse efficiently and cleanly.
Usage levels of PETROLIZE CL will depend on nature of clean up fluid, pH, downhole temperature and bio-polymer mix, between 5 to 20 Liters per 1000 Liters of Clean-up fluid.
Name
Petrolize® MN
Description
Galactomannanase Enzyme suitable for breaking Guar Derivative Filtercakes at high Downhole temperatures.
Enzymatic Mud Breaker for Guar Derivatives Based Mud
A Hemicellulase enzyme, primarily a Mannanase, suitable to work at high down-hole temperatures is required to break mud or filter-cake cast by a Guar Based Biopolymer Calcium Carbonate / Salt based drill-in fluid deposit.
PETROLIZE MN is a medium to high temperature stable Galacto-Mannanase which, either on its own or in conjunction with other enzymes, depending on the well temperature and pH, will break down Guar based biopolymer of the Frac-Gel or Mud Damage into simple sugars within 1 to 10 hours (proposed 5 hours shut in period) time, breaking down the integrity of the filter-cake evenly, allowing the bridging agent to disperse efficiently and cleanly.
Name
Petrolize BioAcetic Buffer
Description
Biological components combined with Hydrogen ion pumping buffers, to supply the ions as it is depleted during the cake disintegrates while treated by the enzymatic system. This ion pumping mechanism can be designed for sustain release, for deferred or delayed action of the enzyme system while in downhole, for days and weeks.
Name
Petrolize BioSurfactant
Description
Biological enzymatic surfactant system is designed to reduce hydrophobicity of the well environment and enhance wetting and removal of any hydrocarbon coating the filter-cake surface. This enzymatic surfactant system would cut down the lag period for subsequent enzymatic cake breaking action and hence be used either as a pre flush or along with enzymatic cleanup solution.