Surface Logging systems are able to provide crucial real-time information on reservoir presence such as precise top and bottom depth and fluid contacts. This is obtained primarily via the analysis of gas data. Such data has a value which is particularly important in Real-time and Near-Real-time, where often there is little other information available, and decisions nevertheless need to be quickly taken. And yet, gas data is often overlooked, with decisions being made purely on LWD systems. At Geolog we are changing this.
Geolog has developed the GeoGQC system, an intelligent system to provide “quick look” gas analysis and interpretation, as well as a system for constantly and automatically quality-checking the data provided. This system has been developed incorporating the specifications from the more advanced analysis technique – the Gas While Drilling GWD™ technique.
The GeoGQC tool displays at all times the ratio between Geolog’s two principle highly-precise gas instruments: the FID Total Gas Detector, and the DualFIDTM Chromatograph. This information is then presented and plotted for the entire well section. Constant data quality control thereby guarantees the validity of the gas data gathered, overcoming many of the uncertainties related to gas analysis.
Operators in the field can therefore concentrate in doing Near-Real Time interpretation, because the system has automated Real-Time monitoring. All the basic ratio analysis are automated and displayed (Wh, Bh, Ch and Pixler Ratios). 
 

  

Geolog’s proprietary software shortens the process of transforming electrical signals into real usable information.

 

 

The GQC system has been developed by Geolog and deployed in each of its systems worldwide with the aim of simplifying and accelerating decision-making at the rig floor.

The GQC system added value is at its best when coupled with Geolog’s advanced Gas Chain, which comprises: