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Drilling with Helium gas logs provides more information about the well potential and the drilling process


The mud gas collected at the surface comprises air and rock pore components released as the drill bit crushes the rocks during drilling. Continuous mud gas logging during drilling contains the density of data parameters, serves to add interpretation to the deposit traces and is standard procedure in drilling operations, where reservoir rocks testing for deposits happens.

The standard industry techniques were designed specifically to evaluate reservoir rocks for hydrocarbons during drilling but mud gas logs are usually not evaluated properly for non-hydrocarbon gases.

Actual Geology has developed real-time mud gas monitoring techniques and Helium Log Monitoring (HLM) system for drilling in hydrocarbon and non-hydrocarbon formations to sample Helium gas at shale shaker and evaluate the continuous Helium gas logs. 

The main advantage of our system is that it has a high sensitivity, much higher than is commonly used in the industry, and also that unique algorithms allow to continuously  determine real-time helium concentrations.

Despite existing sophisticated gas measurement technologies, the value of real-time Heliometric data outweigh the cost of keeping the equipment at the well site, and time and effort taken away from other tasks. Heliometric data obtained after processing from drilling is very important since helium is one of the most suitable gases for the detection of fluid-bearing horizons, shear zones, open fractures and sections of enhanced permeability. Moreover, many hydrocarbon and non-hydrocarbon zones are recognized by a significant increase in He concentrations well before the drill bit reached this section. With our service it is easy to make decisions at what depth rock or fluid samples should be taken.

  • Our service is operationally simple and comparatively inexpensive, because it is easily accommodated on drill rigs and requires no additional rig time.

  • The HLM system is controlled by operator and does not require any calibration.

  • Our solution includes data processing that it not easy to interpret.

  • The HLM system only works if drill mud circulation is established, so mud is not lost in the drill hole.

  • No impact on the monitoring results if drill mud additives such as esters and lubricants are used.


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Picture 1. Well 31

  • Industrial flow

  • Positive helium anomalies in the interval of the productive sands

  • The result of the well testing: (430 bbl)oil flow rate 69 m3/day 

Picture 2. Well 59 

  • Non-commercial flow

  • Weak positive helium anomalies in the upper part of the perspective section, background values at the bottom

  • The result of the well testing of the upper layer 76 m3/day of water and the lower layer 64 m3/day of water

Oil & Gas 
and helium

and offshore

Helium gas mud logging monitoring service

detection of fluid-bearing horizons, shear zones,
open fractures,
sections of enhanced permeability

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