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| Reservoir Engineering |
> Decline Curve Analysis – Conventional and Unconventional; Arps and Fetkovich
> Pressure transient analysis with type curve matching and generation of models
> Gas material balance analysis
> Rate transient analysis, including typecurves, numerical and analytical forecasting
> Resource estimation (conventional)
> Third party valuation of assets (conventional)
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| Recent Project: |
Conducted performance data analysis of hundreds of wells in the Permian Basin to determine EUR and generate representative forecast profiles. The workflow included data validation, traditional decline curve analysis, typecurve matching, generation of oil/gas forecast production profiles, and estimation of ultimate recovery volumes.
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| Decline Curve Analysis |
Decline curve analysis is a traditional means of predicting future oil well or gas well production based on past production history.
We provide the following services -
- Estimation of EUR
- Application of both traditional Arps and Fetkovich methods for enhanced confidence levels of parameter values estimated
- Estimation of recoverable reserves, with client-specific time/rate cutoffs
Example DCA plot
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| Pressure Transient Analysis |
Pressure transient analysis provides vital data towards estimation of virgin reservoir pressure, permeability approximation of the reservoirs and the well completion efficiency.
Deliverables of Pressure Transient Analysis -
- Deliverable capacity of the Well
- Hydrocarbon reservoir estimation through volumetric.
- Determination of the Skin factor
- Mobility of the Fluid (k/µo)
- Radius of Investigation
- Type curve matching – multiple well and reservoir geometries, and outer boundary conditions
- Use of the powerful PPD tool (Primary Pressure Derivative) to more critically identify flow regimes and discount storage effects
Example type curve match of Build up Analysis
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| Gas Material Balance Analysis |
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A basic tool for analyzing reservoir performance. The Material balance was originally carried out treating the reservoir as a single tank, defined by a single average reservoir pressure.
The input data comprises the knowledge of average reservoir pressure of reservoir, PVT properties, rock and fluid parameters. The deliverables of the study are:
- Estimating initial hydrocarbons in place
- Predicting future reservoir performance
- Estimating water influx
- Analyzing drive mechanism
- Predicting ultimate hydrocarbon recovery under various primary drive mechanisms
The average reservoir pressure can be found from buildup analysis that should be conducted periodically. Few assumptions like constant temperature, constant reservoir volume and pressure equilibrium (all parts of reservoir having same pressure) are made, indicating it to be a useful reservoir engineering tool.
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Material balance of reservoir rock and fluid volumes |
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| Rate Transient Analysis |
Rate Transient Analysis uses both fluid rates and pressure history as input parameters, to quantify fluid flow through the reservoir, and thereby determine key parameters such as in-place volumes, EUR, forecast production profile, critical rate, drainage radius, etc.
Deliverables from Rate Transient Analysis: -
- Hydrocarbons in place – IOIP/OGIP
- Estimation of EUR
- Estimation of reservoir parameters including effective permeability, skin and boundaries
- Identification of drive mechanism
- Multiple type curve fits including:
> Blasingame
> Agarwal-Gardner
> Flowing Material Balance
> NPI
> Transient
> Wattenbarger
- Turner correlations for estimating critical rate
- Numerical modeling
- Analytical modeling
- Performance forecasting
Example Blasingame Type Curve Match
Example analytical model match
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Tel. : +1 (614) 707 7107
Fax. : +1 (209) 755 7107
Email : info@nairinnovations.com
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| Testimonials |
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“Having used the services of Nair Innovations on multiple occasions, I can happily say that they provide great quality and competitive pricing delivered in an expedient fashion to aid small operators with their Petrophysical evaluation needs; highly recommended!”
Jarvis Moore, P.G.,
Manager of Geology,
Clearfork Resources, LLC
"Global Digitize/Nair Innovations, Inc. was very accurate, efficient and prompt on a large digitizing project they did for us. We got weekly updates and completed data. They were easy to communicate with us and in addition to quality work It was very cost effective. We will be using them again in the future."
Marie Ice
Geologist/Jetta Operating Co.,
FW, TX
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