What're HEC used by the oil and gas industry for various applications?

Author:LANDU
Release time:2020-09-26
The number:180

Oilfield

Landercoll™ HEC is used by the oil and gas industry for various applications such as rheology modification in fluids for drilling and completion of petroleum and natural gas wells.

Furthermore, Landercoll™ is used in hydraulic fracturing processes and it is an effective fluid-loss additive in well cements. Landercoll™ HEC is compatible with most additives such as biocides, antifoaming agents, oxygen scavengers, fluid loss control additives and retarders. As a naturally derived polymer, it is easily biodegradable.

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Cementing

Wells are often expected to produce hydrocarbons for a long period of time, which is only achievable with proper cementations of the well casing.

Landercoll™ HEC adds important properties to the cement slurry. It minimizes fluid loss, enhances retardation of the slurry and modifies its rheology. Innovative Landercoll™ HEC grades are suitable for use even in high temperature environments.


Fracturing

Hydraulic fracturing enables production of natural gas from unconventional reservoirs but also enhances well productivity in conventional formations. High viscosity Landercoll™ grades can be cross-linked with various metal ions and are able to modify the rheology of fracturing fluids to transport proppants into the wellbore.

After fracturing is completed, Landercoll™ can easily be removed by chemical or enzymatic degradation, leaving no pore-plugging residues.

 

Landercoll™ products provide the following properties for the oil and gas industry:

l  Rheology modification

l  High salt tolerance

l  Fluid loss minimization

l  Clear Solution

 

Furthermore, Landercoll™ HEC as a naturally derived polymer, is easily biodegradable.

The choice of Landercoll™ types depends on the application and the requirements, the most commonly used types are Landercoll™ H and Landercoll™ HT grades.

Landercoll™ HEC is used as a viscosifier in brines and saline fracturing fluids, workover fluids, completion fluids and drill-in fluids. In cementing applications, Landercoll™ HEC minimizes fluid loss, enhances retardation of the slurry and modifies its rheology.