Alkaline β-Mannanase
Alkaline β-mannanase is made by submerged fermentation and purification technique. It can break internal β-1,4-glycosidic bonds of mannan, has strong performance of catalyzing and gel breaking for fracturing fluid, high stability and security, is a kind of high efficiency and non pollution biotechnology product and be widely used in the field of oil exploitation.
Action Mechanism
The common fracturing fluid for oil exploitation are Guar gum, Fenugreek gum, konjac gum, sesbania gum etc., which are polysaccharide composed of galactose and mannose. Enzyme gel breaker contains β-1,4 glycosidic bond specific hydrolase, which can hydrolysis guar gum polymer galactomannan into nonreducing monosaccharide and disaccharide. In addition, using this product can reduce fracturing fluid viscosity, improve the flowback rate, reduce the damage to formation permeability and increase oil fracture efficiency, meanwhile has a protective effect on formation and surrounding environment.
Product feature and efficacy
High enzyme activity and gel breaking capacity, small dosage, easy to use;
Controllable gel breaking speed ,rapid and even ability for viscosity reducing , completely degradation without residue;
Replace the traditional gel breaker completely, also can be used together with chemical gel breaker;
Conform to the oilfield HSE standards, no harm to the oil production environment and the operator, no pollution;
Environmental friendly, stable restore function for the formation core;
Improve the Permeability of crack obviously, activate the maximum capacity of oil well;
High temperature resistant, acid and alkali resistance, stable at room temperature, no special freezing conditions for transportation and storage.
Definition of Unit
One unit (U) of mannanase is defined as the quantity of enzyme, which oxidize 1.0μmol of reducing sugar(mannose) per minute at 70℃, pH9.0.
Specifications
|
Color |
light yellow powder |
|
Odour |
Normal microbian fermentation |
|
Enzyme Activity(U/g) |
50,000 |
|
PH |
4.5-10.0 |
|
Temperature |
30-80℃ |
Shelf Life & Storage
25℃, 12 months, enzyme activity remain≥90%. For long term storage, we recommend below 5 ℃ refrigerator. Increase dosage after shelf life.
Should be stored in a dry and cool place, avoid direct sunlight and high temperature.
Packaging
25 kg/bag
