Services

Passive monitoring of tanks

Even detailed forecasts of tides, currents, and the use of very sophisticated braided rigging equipment do not always give good results in the spatial reproduction of the position of the receiving hydrophones in the braids. Bottom stations “Geonod Intelligence” stably stand at the bottom and reproduce their previous position well, thereby introducing certainty into the situation. The problem is simplified by the fact that it is necessary to reproduce the position of receivers only in the horizontal plane, since the vertical position is fixed by the depth of the sea and does not depend on tides and currents. The position of the bottom stations at the bottom is determined in three ways. Firstly, for depths of up to 500 meters, the time of falling to the bottom from the dive point of the bottom registrar is small (at a speed of 1 m / s this time is up to 8 minutes), and bottom stations do not have time to deviate significantly from the surface dive point. Secondly, during repeated surveys, a more dense arrangement of bottom stations can be used, which, if deviated from their planned position, will give a sufficient number of traces for each CDP site with a set of the same deletions as the baseline survey. And thirdly, for large sea depths, you can use underwater robots, but only for placing registrars in the right place on the bottom. The choice of a specific solution is determined by the shooting conditions.

3D / 4C seismic in areas with obstacles and risky for other technologies

The idea of ​​4D shooting is simple. Re-collection of three-dimensional seismic data takes place at the operating field, and after processing and interpretation of these data, it is possible to find out what changes occurred in the reservoir during production. Understanding these changes directly leads to increased oil recovery of the reservoir. The use of 4D seismic allows to look into the reservoir beyond the narrow area of ​​the near wellbore space, which is the determining factor for choosing the right strategy for extracting the remaining resources.

Due to the 4D seismic survey data, it is possible to recognize well the remaining reserves that were left unexplained as a result of the flooding of the produced reservoir and to determine the reservoirs that are promising but missed during the initial extraction. Currently, 4D seismic is an integral part of the hydrocarbon production management system in most foreign oil fields and is actively used by domestic mining companies.

3D / 4C seismic in transit zones

Recently, with increasing costs for exploring new deposits and with the depletion of already known large hydrocarbon reservoirs, the task of extending the life of existing wells by more fully extracting hydrocarbons from them is becoming especially urgent. One of the widely recognized methods for more complete recovery of hydrocarbons is repeated three-dimensional seismic surveys of exploited deposits (4D). The idea of 4D shooting is simple.

3D / 4C seismic in deep water

Lorem ipsum dolor sit amet, consectetur adipisicing elit. Eveniet esse quis rem recusandae quas accusantium cumque quod incidunt perspiciatis tempora vero eligendi, blanditiis cum tempore saepe. Eius unde labore impedit!

Lorem ipsum dolor sit amet, consectetur adipisicing elit. Eveniet esse quis rem recusandae quas accusantium cumque quod incidunt perspiciatis tempora vero eligendi, blanditiis cum tempore saepe. Eius unde labore impedit!

3D / 4C exploration

Recently, with increasing costs for exploring new deposits and with the depletion of already known large hydrocarbon reservoirs, the task of extending the life of existing wells by more fully extracting hydrocarbons from them is becoming especially urgent. One of the widely recognized methods for more complete recovery of hydrocarbons is repeated three-dimensional seismic surveys of exploited deposits (4D). The idea of 4D shooting is simple.