About our company
The activities of our company are focused on providing services in oil and gas industry.
The company has worked on the oil-gas field services market since 2000. Sergey Novikov is the Director General of the company. We use advanced technologies in our work, which permit to solve geological and technical problems during well construction, well operation and well servicing.
Cost reduction and profitability improvement during oil and gas wells drilling, maintenance and exploitation.
Finding solutions to problems related to intercasing pressure in wells. Intercasing pressure elimination with the use of special solutions and power wave generator
Improvement of environmental safety
Our customers are the largest gas and oil companies in Russia and neighboring states.
Three-component geo-acoustic logging (TCGL)
TCGL is used for carrying out the geo-acoustic logging. It indicates anomalous values in respect to the background of the acceleration vector components under the conditions of dynamic processes in a well (for example: movement of water, oil, gas etc.). Data logging is implemented at a gage point when a device is in a fixed position in a well.
The edge water, hydrocarbon fluid, gas or their mixture produce typical vibration in the course of their movement through the hollow space behind the casing columns, perforations or through the leak-off connection in the underground well equipment. The equipment register vibrations in a frequency range of 100-5000 Hz, so called geo-acoustic noise. These vibrations are generated depending on the volume of fluid, pressure difference in a borehole and the pathway of the flow.
Working frequency range
|100 - 500 Hz||Movement of water, noise of rock|
|500 - 5000 Hz||Movement of hydrocarbon mixture (gas, oil, condensate)|
|500 - 1500 Hz||Movement of oil|
|2500 - 5000 Hz||Movement of gas|
Resources of the device
- identification of presence and direction of the intercasing flows;
- study of a flow profile at perforation intervals;
- determination of leaks in structural elements of the well;
- identification of manmade vein;
- the type of fluid flow identification;
- identification of intraformational movement of the fluid;
- determination of the intensive absorption areas in an open hole and behind casing columns;
- determination of active reservoirs at the blank nonperforated pipe in a well;
The advantage of TCGL is that it makes possible to survey a greater radial transmission distance in contrast to standard methods. For example, movement of water is pointed by TCGL in borehole environment in a radius of 70-100 m, movement of oil is shown in a radius of 50-70 m, movement of gas – in a radius of 30-50 m. While tracing these quantities by standard methods the detection distance is just 0.5 m. The casing columns in observable wells are not a barrier for TCGL.
Wave Power Generator (UGSV-1, UGSV-3)
Long ago scientific community noted and confirmed by numerous experimental data that environment with permanent rheological parameters (viscosity, shear strength and others) obtained flow characteristics under the vibration. The shear strength nears to zero in presence of the vibration background. The vibrational impact deals with the structured systems in two stages: destruction of structural bonds, resulting in lowering of the viscosity, followed by particles motion in the environment with reduced viscosity. Properties of the structure system are being completely recovered when the vibration is removed. All these processes depend on the time of treatment, physical and mechanical properties of the medium, frequency and amplitude of the impact. To enhance the displacement of the plasticity medium special appliances are used. Providing vibration effect on the environment, intensifying mass and heat transfer processes. Thus, due to vibration process one can avoid the accumulation of excessive wall cake and mud rings in the drilled hole and infiltration channels within the rocks. This particular effect was taken as basis for the development of the wellhead elastic wave generator (UGSV). The UGSV produces compressive waves in the intended direction in the well, so called "Rayleigh" waves.
Two models of the elastic wave generator are applied – UGSV-1 and UGSV-3. They differ in type and power of the drive. The drive of UGSV-1 is pneumatic with low power. But it's sufficient for work in water in-take wells with depth of up to 1500m and for intercolumn pressure elimination works. Besides, compressor drive permits to clean working pipelines, wave guide and landing head connections from the used reagent at the end of the work. The drive of UGSV-3 is more powerful hydraulic one. It can increase the injection capacity in wells of up to 5000m deep. The work of UGSV-3 is based on producing alternating hydrodynamic impact on the productive formations. The generator mounted on the wellhead produces elastic waves in the wave guide (tubing). The generated elastic wave transforms into the longitudinal, transversal and surface waves with energy between 5 to 1500 Joules, and frequency between 0.5-80 Hz. This generated wave goes through the wave guide, turns around on the reflector andaffects the productive formation helping towards increase of its feedback.
Issues to solve
- increase of the well yield;
- injection capacity increase;
- inside surface of the drill tube refinement;
- improvement of casing cementation quality;
- the cement plug consolidation;
- sticking of drill pipe elimination;
|Wave energy (J)||5-1500||до 1|
|Well depth (m)||5000||1500|
|Work agent||Liquid, which doesn’t colmatage the layer||Water|
|Radius of wave action (m)||up to 400||up to 150|
|Process step (m)||0,5 - 1,5||0,5 - 1,5|
|Log interval||Without limitation||Without limitation|
|Generator drive||diesel+oil pump-100||Compressor Р = 0.7 – 1.0МPа, Q=10-20 m/min|
|Tie of the reflector to the producing formation bottom||By geophysical method||According to the number of sunken pipes|
|Application||-intensification, the cement slurry consolidation in the annular space, the cement plug consolidation elimination of the drill tube attachment||-intensification, intercasing pressure elimination|
Intercasing pressure elimination
Intercasing flows resulting in intercasing pressure appear in annular space in the course of drilling, well servicing and well operations quite often due to poor wells' bracing, casing leaks, temperature spans, etc. Such flows are quite dangerous, since fluids can create not only manmade veins, but erupt on the surface. This fact leads to blows formation, which jeopardize sustainability of human life and activity across the great areas and may result in tragic consequences.
Currently, three-component geo-acoustic logging is the only way of intercasing flow revealing with the great fidelity and reliability.
For intercasing pressure elimination LLC “PCC “Nedra-S” suggests carrying out tested and reliable complex of operations, consisting of pumping special sealing solutions to the wellhead jointly with processing of intercolumn space by power wave generator (UGSV):
Colmatage solution and its use
Gravity solution and its use
|This compound consisting of mineral oil is pumped into the annular space where the cement stone is uplifted to the wellhead. Compound is pumped under the pressure to the cement stone of intercasing space through the slide valve of the surface casing pipe||Special solution (BCH, WARP etc.) is pumped into the intercolumn space and it substitutes an intercolumn fluid. This method is used in wells, where the cement stone is not uplifted to the wellhead|
We suggest carrying out a complex of wire line well services by means of TCGL to determine intercasing pressure source, to control the dynamics of fluid filtration changes in the intercasing space during the isolating works and to determine the packaging quality after the pumping of special solutions.
Complex of wire line well services
The equipment is intended for thermo hydrodynamic investigations in operating wells during field management. It works under the environment temperature of 0-120ºC and under the pressure of 60 MPa. The diameter of down hole device is 38mm. The equipment works as a part of computer-controlled well logging unit. It's furnished with single-conductor armored cable, personal computer and digital recording device. Two types of equipment are used for measuring – cable and self-contained devices. They can work in wells with corrosive and nonaggressive environment.
Issues to solve
Investigation of well production characteristics:
- determination of indent and intake formation;
- flow profile and response determination;
- pressure determination;
- thermal mode determination;
- determination of water trouble intervals;
- determination of casing leak intervals;
- tubing and intercasing space.
Control of technical equipment work:
- equipment depth determination;
- fluid level determination;
- determination of tubing and packers location;
Study of hydrodynamic layer characteristics:
- productivity factor determination;
- flow capacity and gas capacity determination.
- noise meter;
- collar location;
- flow meter;
- self-heating temperature indicator;
- high-sensitivity flowmeter “Granat-R”
|Thermometers limit of sensibility||0,005°С|
|Thermometers rate of response||1с|
|Manometers limit of sensibility||0,005 МПа|
75 Bezzhonova str., Astrakhan, POB 99, 414024
Director General: Sergey Novikov +7 (8512) 48-01-18
+7 917 180 00 08
Engineer in chief: Vladimir Ushakov +7 (8512) 48-01-19
Chief accountant: Olga Okuneva +7 (8512) 48-01-19
Reviews of the work done
Details of the company