Enhanced oil recovery (EOR) chip - topconnect
per pack of 3
Enhanced oil recovery chips can be used to verify calculation models, providing an optical clear surrogate rock. Known geometrical conditions and optical clear chips create optimal conditions to study physical processes that normally occur inside rock formations.
Our Enhanced Oil Recovery chips mimick porous medium and are often used for veryfing and development of computer simulation models, development of elmulsification chemcials or other chemicals that enhance oil production, microbiological enhanced oil production, research on effects of gas injections in oil fields.
The chips are available in three designs as listed below and can be supplied with or without a hydrophobic coating. By default glass behaves hydrophilic. The optional coating is applied on a best effort base, it is possible that some areas where geometries are not interconnected will stay uncoated.
Physical rock network
This chip is designed by randomly placing rock shaped structures on the chip to resemble the shape that is obtained by cutting rock as accurately as possible. This random structure results in throats and channels between the rock structures. This method of random placement does not give information on throat size distribution. For simulation purposes, the mask (2D) design is available on request. However, experience has taught us that the complexity of this structure makes it challenging to run computer simulations on.
Random network porous structure chip, often used for Chemical Enhanced Oil Recovery (CEOR) and Microbial Enhanced Oil Recovery (MEOR) experiments.
A systematically organized and well-defined rock-pore structure of equally sized pores and channels.
|Unit of measurement
|pack of 3
|Alternative item references
|EOR.PR.20.2, 02976, 01954; EOR.UN.20.2, 02978, 02198; EOR.RN.20.2, 02977, 02199
|Enhanced Oil Recovery
|Number of inlets
|Number of outlets
|Supply format & dimensions
Supplied in black polymer cardtridge (polypropylene). The glass element has a size of 45x15mm.
|Additional information on the Uniform, Random and Physical rock network structures.
|11002978 / 11002198 / EOR.UN.20.2 - Drawing
|Drawing for the EOR porous medium chip with Uniform Pore Network. Items 11002978 and 11002198
|11002977 / 11002199 / EOR.RN.20.2 - Drawing
|Drawing for the EOR porous medium chip with Random Pore Network. Items 11002977 and 11002199
|EOR.PR.20.2 - Drawing
|Drawing for the EOR porous medium chip with a Physical Rock Network. Items 02976 and 01954
|Permeability determination of catalogue chips
|This documents describes how permeability values of EOR chips with a Uniform Network, Random Network and Physical Rock network are determent.
To remove particulate matter from your chip, a water bath with ultrasonic agitation can be used, preferably while flushing a watery solution through the channels.
Glass microchips can be heated (e.g. 400°C) causing any organic material on the glass surface to degrade. Try to use lower temperatures first because burning the content could make it stick. Make sure you only heat the glass chip and not the plastic parts around it.
Concentrated sulfuric acid works well to dissolve organic material, such as fibres, that are difficult to remove with alkaline solutions. Always keep in mind that you are working with extremely corrosive material.
Please note that chips that were coated by Micronit have different guidelines for cleaning!
Alignment can be done on positions 2,7 (or 4,9).
The objective working distance is a critical parameter for selection of an objective. Most default objectives are indented for a #1.5 cover slip which is only 170µm thick, where the thickness below channel is mostly in the range of 400-900µm.
Those objectives with longer working distance are often called non-coverglass objectives.
Where possible we would recommend to work dry. In most cases it should be possible to use the channel edge or other well defined point as reference for manual size corrections, this would reduce the need for corrections by the objective.
Large roughness for structures in glass chips is typical observed for structures manufactured by use of laser assisted manufacturing techniques or abrasion-based techniques like powder blasting. Almost all catalogue products from Micronit are manufactured using wet etching to create full transparent channels without substantial roughness.