...强度各向异性 [gap=877]Key words petroleum engineering，fracturing pressure，shallow layer，anisotropy of tensile strength ...
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The fracturing pressure is dependent on in-situ stress, well deviation and the anisotropy of tensile strength.
井壁的破裂压力不仅取决于地应力，还与井眼形态和地层的强度各向异性有关。
In addition, the degree of anisotropy of tensile strength is largest compared with that of other physical properties.
而且，实验结果也表明，抗压强度的各向异性程度比其他各种物性指标的各向异性程度都要大。
Big ferrites and hot rolling texture are left behind in particle structures, Which leads the anisotropy of mechanics, so the tensile strength and elongation rate reduce.
含有粗大的铁素体晶粒和残留的热轧织构，引起力学性能的各向异性，导致了抗拉强度和延伸率的降低。
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