Reservoir Management Research Based On Multisource Data Analysis Of Oilfield

With the increasing demand of global market for oil year after year, each oil field striveto improve oil recovery ratio, at the same time, we face the characteristic of non-renewable ofoil, as well as the augmentation of the difficulty of exploitation and mining costs, therefore,how to avoid waste of resources and cost saving is a vital problem for reservoir managers.Combination of advanced management conception and sophisticated information technologymethod, establishment of forward-looking reservoir management model and direction system,both of them have a significant meaning to improve work efficiency, reduce costs, findremaining oil and achieve a quantitative research of oil reservoir.The paper establishes a new reservoir management model based on advancedmanagement conception and abundant reservoir data and sophisticated IT method. With therapid development of globalization and digitization, information technology progresses andinnovates quickly. At present, information technology represents the most advancedproductive forces and its development direction. Through the establishment of the originaldata analysis and a variety of data models, the paper shows the relationship among reservoirmanagement, data and information technology. To make use of this relationship and digital oilfield of3D visualization, the construction of modern reservoir management model inthree-dimensional space has been realized and achieved.This paper takes Liugou oil field as example, according to needs of reservoirmanagement; it set up various types of data models, perfected database construction,accomplished functions as: data audits, loading from professional library to central repository,loading of project database and knowledge database, loading of feedback from projectdatabase to central repository. It built as well a reservoir management platform withmulti-source data in using C/S and B/S mode. The main contents and results of this thesis areas following:1. A detailed research in geological background of Liugou oil field is located in thecenter of Ordos Basin; the geological basis of reservoir management is aimed to studyJurassic Yan’an Formation and Triassic Yanchang Formation. In Yan’an Formation, yan tenreservoir group is considered as the main object of study, because the yan ten belongs to riverdeposition system meandering river sub-facies, the principal sand body is beach sand (or pointbar), the yan103sandstone (oil sand body) has a big thickness and is widely distributed. Alsothere is a lithology reservoir-a structure which was formed under the Indosinian period andwas taken shape on fold group of Liugou nose. Triassic Yanchang group is aimed to studylong six, the long six is mainly deltaic depositional system, consisting of lithologic reservoirs.2. On the basis of full understanding of the geological background of the study area, thispaper uses the digital elevation model (DEM) to precede uncertainty modeling and builds upthe study area topography and geomorphology three-dimensional model. All these researchesare designed to complete ground three-dimensional visualization, to implant the basic building and ground engineering and oil well pumping unit into the original position of the3D terrain model, and to realize the management of three-dimensional visualization of theground works.3. Multi-source discrete data of Liugou oil field is presented by the world’s leading3Dvisualization software platform, through Well analysis of the data mining and modeling,thanks to this method, more and more data is investigated and used. Taking advantage of welllocation, elevation, logging and log interpretation results of274wells of study area,particularly with well inclined and layered data, etc, data processing and visualization of theLiugou region3D digital elevation model (DEM) is completed in utilizing Amira software.Data processing and visualization of three-dimensional trajectory of some of the wells, as wellas data processing and visualization of three-dimensional stratigraphic model andthree-dimensional finite element Liugou District stratigraphic model grid are accomplished atthe same time. The target is to complete three-dimensional visual modeling and developmentof underground reservoir of the digital oil field.4. Three-dimensional structures of the subsurface and well space trajectory informationare displayed by quantitative data and visual manner. Completion of the pre-treatment of themeshing of work provides the basic conditions for future further development of numericalreservoir simulation visualization. The study process completes basic data processing andnumerical calculation programming, builds up database and data mining assembly, realizeimmersed manifestation of three-dimensional. All of those work offered necessary softwareprotection and exemplary role for visualization research of other study area.5. Making use of3D visualization technology,18Strata3D space model of Liugou oilfield is established. We get a preliminary visualization results and the demonstration videoworkflow by combination of actual oil field data and the visualization software.3Dvisualization display of all strata helps oil field managers, engineers and technicians tounderstand more direct viewing the three-dimensional structure of the underground strata andthe relationship between formation direction and layers. We can find out more directlyproblems of oilfield cloth well, remaining oil distribution location and favorable oiloil-bearing structure, which is very conducive to guide future oil field exploration and to giveimportant decisions during development period, such as fill the hole cloth drill, injection ofsecondary development, etc. This Provides technical support for enhanced oil recovery.