reservoir engineering
TRANSCRIPT
WHAT IS RESERVOIR ENGINEERING•Reservoir Engineering is a branch of Petroleum Engineering that applies scientific principles to the drainage problems arising during the development and production of oil & gas reservoirs so as to obtain a high economic recovery
RESPONSIBILITIES OF A RESERVOIR ENGINEER
RESPONSIBILITIES OF A RESERVOIR ENGINEER•Reservoir engineer also play a central role in field development planning, recommending appropriate and cost effective reservoir depletion schemes•Reservoir Engineer should also have know-how about wireline logs interpretation
Hydrocarbon Reserves Estimation
Hydrocarbon Reserves Estimation
Hydrocarbon Reserves EstimationVolumetric Estimation
Pyramid equation for calculating reservoir volume
Trapezoid equation for calculating reservoir volume
Later in the life of reservoir, when the reservoir volume is defined and the performance data are available, volumetric calculations provide valuable checks on gas in place estimates obtained from material balance methods
Hydrocarbon Reserves Estimation
Reservoir ManagementReservoir Simulation
Simulate – as to assume the appearance of without reality
Simulation of petroleum reservoir performance refers to the construction and operation of a model whose behavior assumes the appearance of actual reservoir behavior
Well Testing
Well TestingWell Test Designing
Choose the appropriate test for the existing situation such as build up, drawdown, multiple-rate, interference test etc
Estimate the test duration and expected pressure response
Select appropriate pressure measuring equipment
Describe what other data are required
Well Testing
Reservoir ManagementReservoir Simulation
Simulate – as to assume the appearance of without reality
Simulation of petroleum reservoir performance refers to the construction and operation of a model whose behavior assumes the appearance of actual reservoir behavior
Reservoir ManagementEconomic Analysis
Most economic problems in the petroleum –producing industry involved determining what is considered to be economical in the long run, that is, over a period of time
Accordingly it is necessary to recognize the time value of money, that is, the interest on capital investment. A dollar now is worth more than the prospect of dollar next year or at some later date
Reservoir Engineer must have know-how about some basics i.e. investment and types of investments, interest and types of interest, annuity, depreciation and its types, financial measures, profitability analysis, rate of return, payback time, discount rate, net present value, break-even, sensitivity analysis, optimization techniques etc
Reservoir ManagementProduction Forecast
Petroleum production forecast is generated in order to set sell agreement, for future operation/infill drilling and to find out the life of reservoir
Mainly, Decline Curve Analysis and History Matching techniques are used to generate future prediction
Annual budget and field development plan are also based on production forecast
Reservoir ManagementField Development
On the basis of reservoir properties, reservoir extent/boundaries, estimated hydrocarbon reserves and production forecast Reservoir, Engineer give his input to develop the field efficiently and economically
Field Development Plan included no. of wells, determining time to drill a new well, production per well, future workover programs, periodically well testing programs, installation of surface facilities, etc
Software
Software
