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Study on the Methods of Measurement and Profile Establishment of Ground Stress

Author: ShenHaiChao
Tutor: ChengYuanFang
School: China University of Petroleum
Course: Oil and Gas Well Engineering
Keywords: Ground stress Measurement methods Profile to establish Finite Element Method Oilfield Exploration and Development
CLC: TE271
Type: Master's thesis
Year: 2007
Downloads: 493
Quote: 3
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Abstract


Ground stress is the exploration and development of oil and gas field , one of the important basic information for engineering design and construction of oil and gas wells . Situ stress measurement methods and cross-section of the establishment of the finite element method , the in-depth study . Common for indoor situ stress measurements difficult experimental problem , for the first time use of core velocity anisotropy characteristics , differential strain analysis method based on the establishment of a simple and feasible indoor situ stress measurement combination of measurement methods , namely main direction strain method , the method in the premise of ensure the accuracy of the measurement , reduce the difficulty of the experiment , so that the experiment is simple and feasible . At the same time , based on the status quo of the finite element simulation of the stress profile , explore the fault mechanics model to solve the finite element method can not be used to rock this discontinuous media ; combined with mathematical optimization theory , proposed a set of finite element constrained optimization inversion method, which improves the accuracy and efficiency of the work of the entire simulation . With this method , the distribution of ground stress field of Daqing Oilfield Block A case study of the block distribution of the stress profile . The research results show that the the fault their nearby places stress distribution has an important impact of the impact of the law are summarized . Finally , Block A , for example , from the crack distribution forecasts, casing damage prevention , the fracturing treatment program development and injection wells network layout situ stress in oilfield development brief discussion .

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CLC: > Industrial Technology > Oil and gas industry > Drilling engineering > Stem testing and commissioning of oil > Formation pressure detection
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