Gazprom: Shoots Seismic at Chayandinskoye

In the  Chayandinskoye  oil and gas condensate  field  in the Republic of Sakha (Yakutia),  LLC “Gazprom exploration“completed extensive seismic work.

Here, the company pioneered the use of high-density wide-azimuth seismic method 3D. Shortly before the end of the research in the field, journalists visited the Far East media, which shows how the modern search technology hydrocarbons. Pictures of the press tour and formed the basis of this photo essay.

The total volume of Geophysical Research in Chayandinskoye license area was 6,300 square meters. km. The area of ​​seismic surveys carried out directly “Gazprom exploration” – 5800 square meters. km. Even shooting from a helicopter can not demonstrate the enormous scale of this project.

But a bird’s eye clearly visible padded loggers profiles: they share Chayanda (so called gas companies Chayandinskoye field) on plots of 300 to 150 meters.

One of the islands of civilization in the Yakut taiga – the settlement seismic crews № 22. It has everything you need for a fulfilling life and work – dining room, laundry, sauna, medical office. There is even a small shop and a bakery.

For the effective conduct of field seismic field is divided into eight subsections size of 600-800 square meters. km. One of them landed and journalistic landing.

Although around – dense forest, getting lost in the area is almost impossible: around stretch the transfer cables – bright wire, which will inevitably lead you to the people.

And the people on the Chayanda really a lot: study conducted by three seismic crews totaling about a thousand people.

All day seysmootryady moved through the taiga on caterpillars, setting the perimeter laid glades special equipment.

So look geophones – devices for converting mechanical vibrations into an electrical signal. Geophone allows to fix the time of arrival of the elastic seismic waves, as well as to determine its dynamic parameters – frequency, period, amplitude and initial phase. For specific color and shape of the hull workers called geophones “carrots.”

Seysmorabochy second category Ramil Selimzhanov busy installing seismometers. For a change, he “dropped off” in the snow up to 200 “carrots” and collects as much exhaust devices.

At the intersections of the cables connected to the modules of the collection and transmission of geophysical information.

When geophones and modules transmitters installed and tested for performance seismic station, it takes huge machines – seismic vibration installations NOMAD-65 (nomad in French – “nomad”).

Stop “nomads” just to make a little artificial “earthquake”. State Television cameraman “Amur” takes as it happens: from the bottom of the machine extends powerful stove, exciting seismic waves. Blow – and energy penetrates into the depths, is reflected from the dense layers of rocks and returned, and the fluctuations are recorded in advance mounted geophones.

The data obtained through the modules transmitters arrive at the seismic station, which is located here on the site. It is called the heart of the seismic process. Hence it is commanded operators vibroustanovok and monitored the serviceability seysmoregistriruyuschego equipment.

“On the right you see a seismogram: each line on it – it’s one channel – tells the operator seismic Renat Hafiz. – If somewhere there are cable breaks, the transmitted signals, it is reflected on the screen, and the technician on duty to resolve issues. ”

Head of the organization and geophysical studies of “Gazprom exploration” Alexander Pogretsky explains the advantages of high-density wide-azimuth reporters seismic “Seismic 2D allows you to get a vertical cut the crust, while the result of 3D-shooting is a three-dimensional image of subsoil deposits. On such a vast territory, this method has been applied in our country for the first time. ”

Further processing and interpretation of the research findings will allow “Gazprom exploration” by 2017 to build a model Chayandinskoye oil and gas field “in the format of 3D», which will be determined according to the most prospective areas for drilling.  The extraction  of gas from the field is scheduled to begin in late 2018.