Due to the strictly controlled legislations regarding the management of drilling generated wastes it is mandatory to provide a permanent and final solution to dispose such materials in a safe and sustainable manner. Cuttings Re-Injection (CRI) by means of injection of slurry into an adequate subsurface formation is the preferred option of waste disposal to eliminate impact on the Environmental. For offshore and onshore projects to burial of any type of drilling waste into subsurface geological formations, iCRIS is proposed as an economically viable technology with true zero discharge for all generated waste with no legacy issues. iCRIS is the cycle of the integrated Cuttings Re-Injection solutions for safe and proven CRI process based on technologies, experience and best CRI practices.
Adherence to the iCRIs approach will provide safe and seamless Cuttings Re-Injection operations which AKROS tends to achieve to assure high standards of service quality.
The workflow of the iCRIs process includes several important steps described here:   
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Feasibility Study & Design

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Laboratory & QA/QC Slurry Analysis

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Equipment Design & Manufacturing

Execution & Project Operation

Execution & Project Operation

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Monitoring & Pressure Analysis


Feasibility Study & Design performed to assess the economically and environmentally optimum way of subsurface injection into overburden formations as a suitable method of burying drilling fluids and cuttings from the proposed field development. The process cycle includes comprehensive geological study, modeling and design of whole injection process from the beginning to the finish to dispose the scheduled waste volume.

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Laboratory & QA/QC Slurry Analysis are carried out with actual drill cuttings samples from different intervals, mix water and viscosifier to be used for slurrification to ensure proper slurry design and continuous control of slurry parameters within the specified ranges during operation.

Slurry QA/QC analysis is separated into two stages:Slurry laboratory tests analysis - major pieces of information are obtained via slurry laboratory test to design optimum recipe to slurry for different lithologies and maximum allowable static residence time of slurry in the wellbore. 

Field slurry QA/QC analysis - slurry parameters is monitored and maintained within recommended ranges. For this purpose, special measurements are performed for at least one sample per injected batch of slurry or waste fluid.


Equipment Design & Manufacturing own designed and manufactured equipment for the project can handle drill cuttings generated from a several drilling rigs and take into account all the subtleties of the operation process.

equipment scheme.pngCuttings Injection Facility comprises of the following major components:

The capacity of the unit may vary, as it depends on the type of drilled rocks and on the amounts of solids.


Execution & Project Operation – the solution a proven combination of people with the right attitude and experience, combined with the supply of fit-for-purpose equipment, timely execution of the projects supported by subsurface services with the help of the most up-to-date tools to safe and reliable the CRI process.


Monitoring & Pressure Analysis – monitoring approach of waste injection evolved significantly driven by tightening environmental regulations and increased consequences of potential failures. As any operation in oil and gas industry especially evolved around environmental activities and subsurface utilization, waste injection has its own risks that need to be properly recognized and addressed up-front and continuously throughout the project lifetime. 

24/7 monitoring is provided by continuous recording and analysis of critical injection parameters. Own tools provide a full control over the injection lifetime, combine, store and analyze the large volumes of the information.

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