purpose. principles. culture.
we're ATOGeophysical company.

Having a dream of being a general contractor to build spectacular Seismic Project,we have one mission to be the best service provider in oil and mineral exploration in Nigeria.

Frequently Asked Questions


What is Seismic survey?

Reflection seismology (or seismic reflection) is a method of exploration geophysics that uses the principles of seismology to estimate the properties of the earth’s subsurface from reflected seismic waves. The method requires a controlled seismic source of energy, such as dynamite or a specialised air gun.
By noting the time it takes for a reflection to arrive at a receiver, it is possible to estimate the depth of the feature that generated the reflection. A reflection experiment is carried out by initiating a seismic source (such as a dynamite explosion) and recording the reflected waves  using one or more seismometers.
On land, the typical seismometer used in a reflection experiment is a small, portable instrument known as a geophone, which converts ground motion into an analog electrical signal. In water, hydrophones, which convert pressure changes into electrical signals, are used. As the seismometers detect the arrival of the seismic waves, the signals are converted to digital form and recorded; early systems recorded the analogue signals directly onto magnetic tape, photographic film or paper. The signals may then be displayed by a computer as seismograms for interpretation by a seismologist. The number of shots per day range from around 20 to 70, depending on the terrain. Typically, the recorded signals are subjected to significant amounts of signal processing and various imaging processes before they are ready to be interpreted. In general, the more complex the geology of the area under study, the more sophisticated are the techniques required to perform the data processing. Modern reflection seismic surveys require large amounts of computer processing, often performed on supercomputers or on computer clusters.
This reflection seismology is extensively used in exploration for hydrocarbons (i.e., petroleum, natural gas) and such other resources as coal, ores, minerals, and geothermal energy. It is commonly used to map the subsurface structure of rock formations. Seismic technology is used by geologists and geophysicists who interpret the data to map structural traps that could potentially contain hydrocarbons. Seismic exploration is the primary method of exploring for hydrocarbon deposits, on land, under the sea and in the transition zone (the interface area between the sea and land). Although the technology of exploration activities has improved exponentially in the past 20 years, the basic principles for acquiring seismic data have remained the same.

What is the difference between 2D and 3D seismic survey?

2D: Land surveys require crews to deploy hundreds or thousands of geophones necessary to record the data. Most surveys today are conducted by laying out a two dimensional array of geophones together with a two-dimensional pattern of source points.
3D: The basic reflection concepts in 2D and 3D are the same but the implementation of 2D and 3D requiring an increase in the number of channels from 250 to 3,000. Due to an increase in the number of channels, the volume of incoming data is significantly higher, warranting a specialized onsite quality control and onsite processing for quality control. The number of channels per square km (sq. km) is far higher in 3D at 2,500 than the number of channels per line km (LKM) at 250 only in 2D. This translates into a more concentrated data per block and precise information mapping (visualized as a volume/cube). More statistical methods can be applied to a 3D technique across multiple parameters to provide quantitative interpretation. Due to these evident advantages, 3D is preferred over the 2D alternative.
The number of channels per square km (sq. km) is far higher in 3D at 2,500 than the number of channels per line km (LKM) at 250 only in 2D. This translates into a more concentrated data per block and precise information mapping (visualized as a volume/cube). More statistical methods can be applied to a 3D technique across multiple parameters to provide quantitative interpretation. Due to these evident advantages, 3D is preferred over the 2D alternative.

we're ATO-Geophysical company.

The ATO-Geophysical way is built on three pillars: People, Process and Partnership.

  • our people.

    Are the most dedicated and skilled workers in the country. We develop and nurture “homegrown” talent – the average tenure of an ATO Geophysical employee is 20 years – that allows us to pass down knowledge to each new generation, and allows our employees to develop into masters of their craft through years of experience.

  • our process.

    Developed in close collaboration with our partners and clients, combines industry knowledge, decades of experience, ingenuity and adaptability to deliver excellence to our clients.

  • partnership.

    We have longstanding relationships with our clients and our partners – from engineers to craft specialists to financing and beyond. We’ve developed these relationships based on mutual respect and earned trust. We work only with trusted professional partners, all of whom are well-versed in Seismic survey.

We have one mission to be the Best Seismic Company in Nigeria and Africa.

company board members
project delivery starts with great people.

ATO-Geo physical leadership team provides the vision that has propelled us from a small  Seismic survey company to a worldwide diversified leader in a remarkably short period of time.

Alphonsus Egwenomeh

Alphonsus Egwenomeh

HND in Surveying and a PGD

Three decades experience in seismic industry Locally and internationally. Worked in Saudi Arabia, UAE, Egypt and India in different capacities.

Mr. Thomas Olarewaju Ajewole

Mr. Thomas Olarewaju Ajewole

Managing Director

a seasoned Geophysicist with rich experience and deep knowledge of seismic survey industry.  He has brought to the company his immense and incisive broad based knowledge.

His hands on experience spans across various geological profiles of West Africa, South Asia Basins, South-east Asian basins, Caucasus mountain region, remote and challenging terrains, jungle-bush, urban, coastal and transition zone, and swamp.

Mr. Moses Okojevoh

Mr. Moses Okojevoh

Manager Community and Government Relations

He is a highly organized, dedicated and diplomatic Community/Public Rations Manager with over 20 (Twenty) Years of cognate experience. He has handled many project for indigenous company and IOC’s in Nigeria such as IDSL, United Geophysical Nigeria Ltd, Akom survey services, EXXONMOBIL Sahara Energy/Enageed Resources Ltd. Total Exploration and Production Ltd, FIRST Exploration & Production Nigeria Ltd and SHELL Production Development Company.