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hydrocarbon detection 

monitoring drilling parameters 


data presentation 


I Collection and sample preparation

Allows drawing lithological column and detect areas of interest during drilling.

1 Types of samples:

   The range and the frequency of samples are usually required by the customer. To obtain more detailed information, the global samples are supplemented with spot samples whenever it is suspected a change in lithology. Samples are divided in this way:

2 Lithological description of samples

   This is done by geologists with binocular microscope, determining the characteristics of formations crossed during the drilling process:

The lithological description will include:

Sample description:
1800-1804m: QTZS-LITH SDST, transp, lse, m to c, subrnd, subsph, w srt, uncons, glau, litho, g intergran por, 5% free o in mud w/pa yel flor, gd hyd od, 50% lt brn o stn, ptch o stn, bri yel flor, yel flash cut, yel bri flor resdid, lt-brn vis resid. Rare pyr and abundant fos

II Clays density determination - method is chosen depending on customer preferences


1 Sample preparation
2 Apparent density measurement
3 Clays density calculation

III Collecting and preparing core samples

It aims to obtain new information on the rocks crossed in the drilling process, especially about collectors rock.


1 Setting core point

   The beneficiary, according to information in its possession before the start of drilling (seismic information from the investigation or neighboring wells) will determine the number of cores and a guiding core intervals, which will be noted in the technical program
   During the drilling process, the core point is set by client geologist (Well-site geologist ) based on informations provided by mud-logging unit geologists. In the absence of well-site geologist the core point will be determined by our data engineers.

2 Recovery and marking core samples

The beneficiary geologist together with the mudlogging team will assist on the rig floor at core recovery from the core barrel.

3 Core sample examination and description:

4 Reports which providing informations obtained from core samples analysis:

IV Determining the content of calcium carbonate from the sample

The percentage of "calcite" and "dolomite" from a sample is determined after reaction with hydrochloric acid and is made with a calcimeter designed by us.