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Client Testimonials

See what our clients have to say about our people and services

“Thank you all for your outstanding support and effort in solving this interface issue between the drilling data system and the mudlogging equipment…you have shown that dedication and perseverance will prevail..”

Drilling Superintendent, Santos

“We found significant value in running the advanced mud gas and cuttings geochemistry services such as G8 and GeoIsotopes. The data has proven useful for our composite reservoir fluid and petrophysical characterization”

Petrophysicist, BHP Billiton

Your contributions were vital for ensuring the strength and integrity of our 9-5/8” casing shoes by consistent recognition of the top salt. On multiple occasions your understanding of the cuttings has helped us improve the drilling performance…

Senior Production and Operations Geologist, Shell

“…the challenging rig up was achieved with proficiency and conducted to a good start of the operations of the well…the team has shown a good cooperation and high skill when facing unusual technical challenges (i.e. computing the correct lag time with the jet stream technology)”

Head of Subsurface Dpt., Total

The service provided was efficient and reliable. Wellcoms web-based real-time data transmission system, with customizable configuration, allowed us to access to all needed parameters in due time supporting the decision making process

Geology Operations Manager, Eni

GEOLOG is consistently the best mud logging service I have worked with!

Senior Lead Drilling Superintendent, Exxon Mobil

GEOLOG and JO personnel worked together to build a model for formation fluid in the vertical and lateral section using G8 and G9+. The technique allowed us to understand the variation of fluid characteristics in the lateral section where no downhole fluid tools were available.

Senior Geologist, Saudi Arabian Chevron Inc,- Kuwait Gulf Oil Company (K.S.C.)

You rock! The meeting today and your data handling and analyses were extremely good. I am impressed. Thank you very much for that

Principal Geologist, Statoil

Another example of fine performance from GEOLOG crews, who over the past 2,5 years have provided a reliably excellent service and have become important members of the Tullow team.

Operations Geologist, Tullow

Services were performed without any interruption of data collection, high quality presentation and displays were delivered by a very professional crew of Data Engineers and Mud Loggers.

Operation Geologist, CEPSA

Job well done. All GEOLOG team members on board are valued team members and a pleasure to work with.

Lead Drilling Supervisor, Exxon Mobil

Efficient service…cooperative attitude of personnel with strong adherence to safety regulations with an excellent follow up and efficient base support.

Operations Geologist, REPSOL

…G8 (DualFidStar)TM… can contribute to an overall cost savings…through this new evaluation service, we can optimize our formation evaluation budget through the reduction of other data acquisition services.

Operation Geologist, OMV (Norge) AS

…excellent job to identify unexpected HC zones. Good and Fast reaction from Geolog to inform the Asset Team and the GnG team in the office which bring the attention to the team of the new discovery. It resulted in possible future appraisal opportunities.

G&G Operations Geologist, Chevron

…derived curves can be correlated with the main petrophysical parameters… allowing us to optimize our formation evaluation budget.

Exploration Department, Wintershall Noordzee B.V.

This crew continuous do a great job, even in the interval, when we were not drilling, the GEOLOG team stayed active and engaged. The crew is open to communications which is very helpful.

Well Site Geologist, Exxon Mobil

The use of the Gas Distribution System enables fast and accurate understanding of any problems that might occur with the retrieval of the Gas sample from the circulating fluid. Any high gas peaks can be both tested by the Dual FID and FID Gas Detector…

Well-site Geologist, BP

The Real-Time Data Transmission System “Wellcoms” presents with its flexibility and friendly use interface an excellent tool for TEPI to monitor and take necessary decision at the right time, remotely.

Head of Subsurface Department, Total

We are very pleased with GEOLOG crew on board Noble Sam Turner in all aspects of their service, work behavior attitude and safety performance. Data engineers and mud loggers are very experienced and efficient.

Operations Geologist, Maersk Oil

We take this opportunity to extend our gratitude to GEOLOG for their exceptional performance this year to date…your team demonstrated both technical proficiency and commitment to operational excellence in the rig.

Geological & Geophysical Operations Coordinator, Chevron

We particularly appreciate the Dual Fid performances in terms of reliability and accuracy as fast gas chain, improving our HSE confidence and the reservoir interpretation.

Operation Geology Team Leader, Eni

GEOLOG Dual FID has performed 100% throughout the drilling of the wells. It provides accurate and fast determination of the Total Gas Percentages, as well as the ppm accuracy for the gas breakdowns - from C1 to Nc5.

Well-site Geologist, BP

GEOLOG team provided the required services successfully. Their contribution to Sinop-1 Well Exploration Project has been much appreciated.

Project Coordinator, Petrobras

The performance of the GEOLOG crew on the recent drilling campaign has been exemplary. They made a positive contribution to the safety of the operation…

Drilling Supervisor, Total

The equipment worked very fine, especially Dual FID Star and Coriolis sensor which help us to find early Kick detection, which save our time during drilling.

Drilling Supervisor, Kuwait Oil Company

GEOLOG Web-based Real Time Data Transmission allowed us to constantly follow up operations and supported the decision making, especially during the critical phases.

Well Operations Manager, Eni

We appreciate their expert knowledge, professional attitude and commitment in support of drilling operations. GEOLOG has demonstrated its technical capability in all aspects of mudlogging, and we are especially impressed with the data quality from the Advance Gas Extraction and Analysis system.

Geological Advisor, Chevron

GEOLOG showed reliability providing an efficient service along with skilled and experienced operators and a cooperative attitude of personnel with strong adherence to safety regulations on site...

Senior Drilling Supervisor, CEPSA

We look forward to have the same good performance, high standards quality of service and professionalism for all the future jobs.

Development Manager, Repsol

The GeoIsotope and Heavy Gas data collected were useful for the whole operations and studies in order to better understand the complicated Wildcat environment.

Operation Geology Team Leader, Eni

We are very pleased about performance of the 9 site geologists provided by GEOLOG...excellent qualification, strong communication skills and very good professional interaction with our specialists and contractors.

Project Manager, VICO Indonesia

GEOLOG has demonstrated its high technology capabilities in all aspects of the Surface Logging including Drilling Operation Monitoring, Formation Tops, Gas Detection and Geological Sample Evaluation.

Senior Operation Geologist, Perenco

They have been very active in good communication...we highly appreciate their excellent performance and their team work.

Drilling Supervisor, Total

GEOLOG Wellcoms transmission service permitted to follow closely drilling operations. GEOLOG with their good HSE record contributed positively to maintain zero incident performance at the well.

Well-site Geologist, Anadarko

We hope that such professional attitude is maintained for all future projects and the GEOLOG Team will continue to perform at this high level.

Team Leader Geological Well-Site Operation, Cairn

…their interest in the safety of the employees, the facilities and protection of the environment and their accuracy and reliability about the data delivered demonstrated a high level of concern for both drilling and safety.

Drilling Supervisor, Shell

The advanced gas service provided by GEOLOG add values to the Asset Team to narrow down uncertainties in fluid interpretation related to complexity and heterogeneity. The integration with real-time mudlogging and LWD data helps minimize the need for wireline fluid sampling with the consequent reduction of the costs involved.

Geological & Geophysical Manager, Chevron

GEOLOG’s advanced mudlogging services stood head and shoulders above the rest…They provided some of the best data from cuttings and gas analysis that Trey has ever worked with.

Geologist, Trey Resources, Inc.


GEOLOG Argentina provided an outstanding work detecting all the influences, as well as of all the situations of risk during the operation. They also showed proactivity and predisposition to continuous improvement.

Geologist - Tecpetrol

GEOLOG provided trial for heavy gas analysis C1-C8 (Gas Analyzer “DualFidStar”), which has been successfully used. This will be highly recommended for exploration/appraisal projects.

Drilling Services - Petrofac

The DrillClean data interpretation and reports helped the team to clearly understand and quantify the impact of drilling/hydraulic parameter variation on borehole cleaning capabilities.

Senior Well Engineer, Shell

We express our gratitude to GEOLOG crew for their contribution in the drilling, geology and HSE issues in all the operations of the well and their interest in the safety of the employees.

WSG, Perenco Cameroon

GEOLOG operated efficiently in extreme weather conditions with exhaustive control of flow through flowmeter in/out and proper processing of the cuts for petrographic description.

Drilling Manager, Enel Chile