Objective
Elaboration of a geological deposit model shaped by a mathematical model in order to provide a description of the heterogeneities at metric and hectometric scale of the physical properties of a sandstone reservoir that can be used by the reservoir engineer in view of an optimal field exploitation.
To solve the problem, heterogeneous reservoirs simulations have been set up :
1. a methodology for studying outcrops and geological data
2. a new method of simulations of random series : the method of trunketed Gausian functions. The application of this method requires the respect of the horizontal stationnarity. This 2D method tested on a gas storage site with the parameters deriving from the study of a site in Yorkshire can only be generalized if addtitional studies are carried out namely :
- consideration of the non stationnarity according to the horizontal
- consideration of the limits of the units and of their reference surface by simultaneous simulations of lines (2D) or of surfaces ( 3D)
- acquisition and processing of new field data to set up database allowing to calculate the geostatical parameters in view of calibration and/or as a complement of the results obtained with the sole well data.
Some environments or changes of scale of the simulations (different magnitude order of the heterogeneities) may lead to the elaboration of new additional simulation methods.
This simulation method presents can be applied to a number of environments of the fluvio-deltaic type caracterized by sub -parallel strata with perfectly defined plane limits. The program allowing to run these simulations constitutes a research tool. This tool should be industrialized to make its utilization convivial.
The project is divided in two successive phases:
PHASE 1:STUDY OF THE FORMATION
The object of the field acquisition in two and three dimensions was to acquire geological,geophysical and petrophysical data allowing set-up the model.
These studies will be carried out on the middle Jurasic outcrop of the Yorkshire cliffs in Great Britain. The selected cliff is a remarkable representation over 10 kilometers length and a height of 30 to 150 m of a wide variety fluvial to fluvio-deltaic deposits,hardly altered by the tectonics and thus providing a good image of their original representation. The sandstonelike sedimentary elements (eventual reservoirs) show extensions ranging from dozens of meters (clay dominant) to several kilometers (sandstone dominant ). The light overburden of these elements allows easy access through small core-drills located at the back of the cliff,and thus makes it possible to obtain physical properties measurements less altered than those acquired on the outcrops. Core-drills will also provide us with well calibrated log shapes.
The sedimentologic study of outcrops will include a photogeological study of the whole cliff,performed with the help of documents obtained by helicopter. A set of vertical cross-sections will then made,thus providing a detailed quantitative description of the different sandstone or clay elements in relation with the deposit mode at a scale below the kilometer.
The execution of core-drills near the outcrops will allow the passage from a 2-D heterogeneities description to a 3-D description at a kilometric scale and the comparison of the obtained results with those of the oil drillings thanks to the recording of logs.
The physical properties will be measured on samples taken from the outcrops and on plugs sampled from the cores. A geostatistic interpretation of the values obtained will then be proposed.
High resolution georadar profiles will connect the core-drill with one another and with the outcrops in order to improve the threedimensional image of the studied sedimentary elements.
PHASE 2 : ELABORATION OF THE 3-D GEOSTATISTIC MODEL
This model aims at describing the heterogeneities that can be the object of a direct exploitation by the reservoir engineer in order to optimize the development of fields. The general geological data will thus have to be entered in the numerical model of the field.
The model will be elaborated by integrating the results acquired during the sedimentologic studies and put in shape by the geostatistical processing.
A first step will consist in achieving a 2-D model based, among others, on the study of the images of the cliff.
The second step will consist in achieving a 3-D model deriving from the 2-D model, the 3-D geostatistical modelling and the sedimentologic model.
A third step will consist in controlling the model according to real data from a North Sea field.
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
This project has not yet been classified with EuroSciVoc.
Be the first one to suggest relevant scientific fields and help us improve our classification service
You need to log in or register to use this function
Programme(s)
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Topic(s)
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Call for proposal
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Data not available
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Funding Scheme
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Coordinator
92500 Rueil Malmaison
France
The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.