Project 1: Developing efficient steady flow in heavy oil and reservoir management
Scope
1. Better understanding of field conditions
2. Document liothological characteristics
3. Accelerate pace of development of field
4. Reduction in production cost and increase in recovery
BRIEF WRITE-UP
Introduction
Waxy crude or heavy oil usually consists of light and intermediate hydrocarbons, wax and heavy organic compounds. This crude is highly viscous with high specific gravity and low hydrogen-carbon ratio, exhibiting thixotropic, temperature dependent and compressible properties developed by the crystallized paraffin compounds and the thermal shrinkage. As this heavy oil flows, crystals of wax are formed on the side walls and encapsulate the oil inside the wax layers. This arterial blockage efficiently contains the free flow in addition to its thixotropic behavior.
Objectives•
To develop field applicable techniques for economic recovery
• Methodologies for better reservoir management
Research Plan Summary
• Field Work
- Collection of samples and well data
- Discussion with the field personnel
•Laboratory Work
- Detailed core Analyses with special reference to,
• Storage and yield parameters
• Physico-chemical properties of formation fluid
• Fluid flow behaviour
- Log data interpretation
• Expected Outcome
- The result will provide efficient field oriented techniques to accelerate the flowable movement of heavy oil with sustainable economic recovery
- The study will be a model for similar field conditions
- Research publication
Project 2: Containing formation fines migration an obstruction to well productivity
Scope
1. Better understanding of the liothological characteristics
2. Suitable chemistry of the treatment fluids and proppant selection
3. Better production results
4. Better reservoir management
BRIEF WRITE-UP
Introduction
One among the unique problems faced world over is the migration of fines accelerating the development of heterogeneity of the formation. Technically it is the movement of fine particles within the formation due to drag forces during production. This may result from unconsolidated or inherently unstable formation, or from the use of incompatible treatment fluids.
Geologically, these fines are supposed to be detrital or authigenic in nature; suspended in the produced fluid to bridge the pore throats near wellbore, damaging the sand screen simultaneously reducing well productivity.
Objectives•
To develop field applicable techniques for economic recovery
• Methodologies for better reservoir management
Research Plan Summary
• Field Work
- Collection of samples and well information
- Discussion with the field personnel
•Laboratory Work
- Development of model to predict the ratio of fines to production volume
- Detailed core analysis with special reference to,
• Permeability parameters
• Mineralogical assemblage
• Mechanical compaction
• Particle size distribution
- Log data interpretation
• Expected Outcome
- The result will provide better technologies to overcome this global problem
- The findings may better decide the effective stimulation activities
- The study will save the rig time leading to improve the recovery rate
- Research publication
Project 3: Rock mechanical behaviour - an effective tool to enhance drilling and production
Scope
1. Better drilling options
2. Quantify parameters for structural and excavation design
3. Optimize reservoir management
4. Better understanding of factors controlling the occurrence and areal extent
5. Better application to improve recovery
BRIEF WRITE-UP
Introduction
While quantitatively evaluating the petroleum potential, liothological parameters are key features that control hydrocarbon occurrence and behaviour. Fossil fuels are being consumed much faster than the quantum of average production. Hence, the need of the time is to evaluate every parameter for cost effective exploration and maximize production. Since rock reacts to change in loading with alteration of internal geometry, a better understanding of mechanical properties can help evolve improved exploration, drilling completion and reservoir management for healthy recovery and reduced down time.
Objectives•
To develop field applicable improved drilling
• Methodologies for better reservoir management
• Improved hydrocarbon recovery
Research Plan Summary
• Field Work
- Collection of samples and well data
- Discussion with the field personnel
•Laboratory Work
- Detailed core Analyses with special reference to,
• Strength and elastic behaviour of formation material
• Pore pressure and mechanism of rupture
• Rock deformation characteristic
• Rock compressibility: change in storage and yielding capacities
• Behaviour of stressed rock masses
• Influence of environment and fluid pressure upon rock strength
• Progressive failure of the rock surrounding the excavation drill bit.
- Log data interpretation
• Expected Outcome
- Improved drilling techniques: bit selection and well bore stability
- Better reservoir management: porosity and permeability trends, formation completion and
stress saturation response
- Effective well completion, stability and stimulation techniques
- Research publication
Project 4: Sensitivity of cement and drilling fluids in well completion - An analytical approach
Scope
1. Optimize the drilling operation and minimize the formation damage
2. Better understanding of rock-fluid and fluid-fluid interaction
3. Better outcome of cement and drilling fluid design with respect to the existing wellbore conditions
4. Drilling fluid contamination and elimination techniques
5. Development of suitable drilling fluids and cement additives especially for the elevated temperatures
BRIEF WRITE-UP
Introduction
Zonal isolation, casing protection, holding the casing weight and to mitigate the formation damage are key concerns for well completion. The use of drilling fluids leads to clean the cuttings from the face of the drill bit and drill string, increase the stability of well bore and reduce the wear and corrosion of drilling equipments. Based upon the utilities followed by the wellbore conditions and detailed laboratory tests are the only option to obtain an effective design for the purpose. A huge temperature differential from bottom to top necessitates standardization with respect to the requirements by simulating the well condition into the laboratory tests at various temperatures.
Objectives•
Mitigate the formation damage
• Wellbore fluid design and formation fluid migration control
Research Plan Summary
• Field Work
- Collection of well information
- Discussion with the field personnel
•Laboratory Work
- Detailed analytical work with special reference to,
• Fluid consistency
• Rheological properties and fluid loss
• Wellbore fluid interaction
• Strength development
• Expected Outcome
- The result will provide better control on formation damage
- Field applicable drilling fluid chemistry
- The study will save non-productive time
Project 5: Assessment and management of tight sand reservoirs
Scope
1. Better reservoir management strategy
2. Strong control on production forecast
3. Identify the major factors controlling the parameters of storage and production
4. Developing techniques to improve the recovery
BRIEF WRITE-UP
Introduction
Tight sand reservoirs are the ones which cannot be produced at economic flow rates or that do not produce economic volumes without the assistance of intensive stimulation treatments. Tight gas sands are evaluated with improved techniques for electrical properties, capillary pressure and completion fluid analysis data related to field production optimization. Geologically, these reservoirs are found along with conventional reservoirs. Generally, they are found in the deeper portion of the basin where due to the overlying burden over a prolonged geological history, the porosity is reduced hence, the permeability. These conditions may also be due to the fine grained nature of sediments, compaction or infilling of pore spaces by digenetic effects.
Objectives•
Identification of factors controlling the storage and production parameters
• Reservoir management and efficient production forecast
• Techniques to improve the recovery rate
Research Plan Summaryy
• Field Work
- Collection of samples and well data
- Discussion with the field personnel
•Laboratory Work
- Detailed core Analyses with special reference to,
• Storage and yield parameters
• Mechanical behaviour of hydrocarbon bearing formation
• Hydrocarbon flow behaviour
- Log data interpretation
• Expected Outcome
- The result will provide better technologies to economic recovery
- The findings may better decide the effective future estimates
- The study will be a model for similar field conditions
- Research publication
Project 6: Shale gas reservoir characterization, stimulation and production evaluation
Scope
1. Reduction of the load on conventional resource
2. Optimize formation evaluation
3. Minimize production cost
4. Target pay zones and improve recovery
BRIEF WRITE-UP
Introduction
Shale gas is considered an unconventional resource. It is naturally stored in organic rich shales, interbedded with layers of shaley siltstone and sandstone getting treated as source, reservoir and seal, occupying vast areal extent typically with ultra low permeability. Shales that host economic quantities of gas have numerous properties and are rich in organic content where high heat and pressure have converted petroleum to natural gas. Despite being trapped in low permeability horizons, the boom in recent years can easily be attributed firstly to meet the higher demands of conventional natural gas resource and secondly due to the invention of newer stimulation technologies. The integration of laboratory and field data will help in determining the best targets for perforation and stimulation followed by sustainable production rate.
Objectives•
To develop field applicable model for storage and economic recovery
• Methodologies for better reservoir management
• Techniques to improve the recovery rate
Research Plan Summaryy
• Field Work
- Collection of samples and well information
- Discussion with the field personnel
•Laboratory Work
- Detailed core analysis with special reference to,
• Mineral composition
• Formation pressure
• Fluid flow behaviour
• Rock mechanical and chemical properties
• Absorbed and free gas content
• Total organic content
• Thermal maturity
• Storage and yield
• Expected Outcome
- The result will provide better technologies towards stimulation and production
- The findings may better decide the economic recovery rate and future prediction
- Research publication
Project 7: Coal bed methane resource characterization
Scope
1. Potential beneficial use of discharged water
2. Evaluation of factors governing occurrence and aerial extent
3. Minimize production cost
4. Controlled application to enhance economical recovery
BRIEF WRITE-UP
Introduction
The gaseous product in coal beds that has not been disturbed by mining activities is the coal bed methane which offers significant environmental benefits over other fossil fuels because of its chemical simplicity and comparatively clean burning. The process of conversion of organic matter to coal, generates methane. This is stored within coal beds in much larger quantities per volume of formation than the conventional gas reservoir. Methane is loosely bound to coal and held in place by water contributing pressure that keeps the gas attached to coal .The geological structure and the properties of coal bed together determines the gas content supplemented by chemical and physical parameters. The coal bed methane resource differs in accumulation properties, development techniques, production forecast and reserve estimates because of dual reservoir storage characteristics. One is the coal matrix, the microspores and the other is the open natural fracture, the macrospores hence; the possible existence of reservoir heterogeneity. The amount of methane depends upon the quality and depth, the higher the energy values of coal and deeper the coal bed, greater the volume of gas.
Objectives•
Identification of factors controlling the storage and aerial extent
• Reservoir management and beneficial use of discharged water
• Provision of horizontal drilling and CO2 sequestration techniques
• Techniques to improve the recovery rate and future prediction
Research Plan Summaryy
• Field Work
- Collection of samples and well data
- Discussion with the field personnel
•Laboratory Work
- Detailed core Analyses with special reference to,
• Degree of coalification
• Mineral composition
• Storage and production parameters
• Rock compressibility
• Shrinkage and swelling of coal matrix
- Log data interpretation
• Expected Outcome
- The result will provide better technologies to economic recovery
- The findings may better decide the effective future estimates
- The study will be a model for similar field conditions
- Research publication