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Unique wellbore software platform
Geonaft
All field development processes on one software solution platform
Included in the Unified Register of Russian Programs for Electronic Computers and Databases
Program complex «Geonaft» is a software platform for well placement engineers which allows multidisciplinary teams work together using one tool to leverage the data acquired pre-drilling, drilling and post-drilling stages.
Accuracy increase of reaching «sweet spots»
Lead time per well reduction
Elimination of drilling risks
Features
Oil and Gas field development at all stages - The platform allows to work out any stage of field development process
Multidiscipline - The system enables combination of various commands in the process of field development on the same platform
All data formats - The platform permits to import data of any format from third-party systems
Real Time mode update - The data gets into system in real time mode, that allows to quickly adjust the process
System modularity - The user can select functionality required for specific tasks
Remote control - The platform allows to control well construction from any part of the world
Integrity - Models of different systems are automatically updated upon data modification or new data coming-in
Expedite reporting - The system provides for convenient forms of reporting
improvement in in-zone,
on-plan drilling
on-plan drilling
+25%
Geonaft software solutions
Geosteering module
The Geosteering module is based on the method of comparing the synthetic and actual logging. A distinctive feature of the method is the possibility of geosteering both with the help of azimuthal images and a bed boundary detection service, and in the presence of only one gamma-ray log curve:
- Recommendations for making a decision on the well trajectory based on the results of comparing synthetic and actual logs.
- Optimization and correction of the trajectory of a horizontal or inclined well.
- Creating reports of the process of geosteering and making recommendations for further drilling.
- Creating a geosteering model with synthetic well logs.
Azimuth data interpretation module
Using only traditional logging while drilling for geosteering is difficult, since such logging does not provide an azimuthal direction of measurements in the well. As a result of this, changes in lithology can be interpreted as drilling up the formation and down the formation:
- Independent method for determining the angle of inclination of the reservoir structure.
- Analysis and construction of a geosteering model based on the results of modern methods of well logging.
- Precise determination of the direction of the drilling wellbore trajectory in the reservoir.
- Interpretation of azimuthal data allows us to determine the direction in which the wellbore intersects geological formations.
Petrophysics module
The petrophysical module allows to carry out both real-time and final interpretation of logging. The petrophysical module is an integrated part of software solution system Geonaft and can use in sidelines of industry – geomechanics, well placement:
- Real-time synchronization with geosteering and geomechanical modules.
- Automatic recalculation of petrophysical parameters (e.g., porosity and permeability) with respect to changes in the well path and/or structural data actualization.
- Custom flags for particular petrophysical parameters.
1D Geomechanics module
"The «1D Geomechanics» module allows to perform calculations of rock elastic-strength properties, pore pressure and stresses profiles for both drilled and planning wells. The calculation results are input information for Well Stability, hydraulic fracturing planning, sand production and Fault Stability:
- Calculation of dynamic and static Young’s modulus, Poisson’s ratio, Biot coefficient
- Defining the rock compressive and tensile strengths
- Calibrating log data to core measurements
- Estimating the total and effective formation stresses
- Defining the stress direction
Advanced Pore pressure module
The Pore Pressure module is convenient to calculate the vertical stress (lithostatic pressure), in case of density logging absence there are options for restoring the missing data:
- Defining the top of overpressure
- Pore Pressure Prediction at planned well
- Determination of the required mud weight to prevent formation kick
- Well design optimization based on pore pressure and fracture pressure
- Analysis of pore pressure in realtime based on LWD
Wellbore stability module
The «Wellbore Stability» module allows to perform the wellbore stability window calculations or combined graph of reservoir pressure and rock breakout, mud losses pressure and hydraulic fracturing using the results of a 1D geomechanical model building:
- Selection of mud weight for stable drilling
- Determination of allowable ECD to prevent losses
- Trajectory and well design optimization
- Sensitivity analysis to change in trajectory or uncertainty in input parameters
Sanding Control module
The «Sand Prediction» module allows to choose optimal strategy to struggle with sand production during operations of the oil-gas fields, composed of fragile weakly cemented rocks. The input information for assessing the sand production risk is a calibrated 1D geomechanical model, the granulometric composition of the reservoir, and the well completion information:
- Defining the probability of solids production
- Determination of allowable drawdown to prevent sanding
- Optimization of horizontal well azimuth
- Improving the perforation strategy (type and orientation)
- Assessing the depletion impact on sanding
Fault Stability module
The Fault Stability module allows to evaluate whether faults and fractures are stable or in a critical stress state, i.e. they can be considered hydraulically conductive. The input information for the analysis is a calibrated 1D geomechanical model and the faults and fractures orientation in space.
- Assessment of stress state for each fault/fracture
- Estimating the critical conditions of fault slip
- Determination of the geometry of critically stressed faults and fractures
Stress Analysis module
The module allows to significantly improve the knowledge of the current stress regime by combining detailed well data and regional tectonic information. To build a 1D geomechanical model and calculate wellbore Stability, all three main stresses are required, and there is still no method for directly measuring the maximum horizontal stress:
- Current stress regime determination (normal fault, strike-slip, thrust)
- Quantitative ratio of formation stresses
- Defining the direction of stress
Drilling support module
The module is used directly while drilling process, when data is being loaded in real time through the WITSML channel or historical data is downloaded for analysis:
- Wellbore condition indicators assessment by comparing the calculated Torque and Drag model with the actual
- Time data visualization in user-friendly format
- Graphs and cross-plots visualization in depth from time data for analysis
- Time vs Depth analysis
FracSolver
Frac solver module was designed for planning reservoir stimulation by hydraulic fracturing method on geomechanics and petrophysics base, that was built in Geonaft or imported from other sources. Hydraulic calculation process implies single fracture growth mechanism driven by most used technology: gel system carrying proppants in order to create
conductive layer:
conductive layer:
- Geomachanics, petrophysics and well design data gathering
- Fracture toughness and leakoff coefficient calculation
- Intellectual pump schedule generation
- Well productivity estimation by quick simulation for single phase flow in rectangular area
- Hydraulic fracture calculation
Why Geonaft?
+25%
improvement in
in-zone, on-plan
drilling
in-zone, on-plan
drilling
+20%
improvement in
production for oil
and gas producers
production for oil
and gas producers
-7%
Decrease in NPT
x1.5 - 1.7
Speed of drilling
increase
increase
Cases
DRILLING THE «UNDRILLABLE»
WELL
WELL
- Results:
- First horizontal well successfully
drilled and completed - No NPT due to instability
- All objectives were met
- First horizontal well successfully
CONSTRUCTING THE UNCONVENTIONAL
WELL IN WEST SIBERIA
WELL IN WEST SIBERIA
- Results:
- Horizontal section in Target zone: 100%
- Zero NPT due to instability
- The liner reached TD
- The well is opened to production
Our services
Petrophysics
Petrophysical support in the process of well drilling (24/7)
Software Development
We provide a full range of services for the development of customized software for oil and gas companies.
Training
We provide the services for training users to operate the software package Geonaft. The training course includes the basics of geosteering.
Geomechanics
Full range of services on geomechanical modeling and support during drilling
Well placement service
Drilling, planning and geosteering of directional wells (DW), horizontal wells (HW), sidetrack wells (SW), sidetrack horizontal wells (SHW)
Drilling support
Projects preparation for a well construction with all the engineering calculations, including geomechanics with obtaining wellbore stability model, which allows us to actualize risks associated with drilling
Products
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