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- If uncompacted and possessing abnormal pore fluid pressure,regional caprocks are the barriers to prevent oil and gas in water dissolving phase from escaping. 如果其再具生烴能力,還可以成為阻止擴散相天然氣逸散的區域濃度屏障。
- Abnormal high formation pore pressure and sloughing stress exist in the south area of Junggar Basin,and mud making and composite ion contamination is also remarkable in this area. 新疆準噶爾盆地南緣地區安集海河組存在超高壓、強造漿、強坍塌應力、複合離子污染等問題。
- Abstract: Abnormal high formation pore pressure and sloughing stress exist in the south area of Junggar Basin,and mud making and composite ion contamination is also remarkable in this area. 摘 要: 新疆準噶爾盆地南緣地區安集海河組存在超高壓、強造漿、強坍塌應力、複合離子污染等問題。
- The caprock with big thickness owns strong capillary sealing ability, can form abnormal pore f... 斷層封閉可以恢復蓋層的質量和分佈的連續性。
- When the pore pressure is relatively high,the formate is used as a weighting agent to maintain a low-solid mud system. 在地層孔隙壓力較高時,則配合使用甲酸鹽進行加重,以維持一種性能優良的低固相鑽井液體系。
- Besides, the undrained shear strength was increased slightly due to the negative pore pressure. 不排水條件下由於負孔隙水壓力的存在,土樣的表觀強度略有增大。
- In the meantime, the pore pressure also increased with the increase of confining pressure. 同時,孔隙水壓力值也隨著周圍壓力的增大而明顯增大。
- During the second stage, the excess pore pressure was dissipated under the constant loads. 固結階段,土體在恆定荷載作用下,超孔隙氣壓和超孔隙水壓逐漸消散而固結。
- A safety supervisory control of building dyke, i. e., pore pressure coefficient B-bar control method is introduced. 摘要簡要介紹了一種軟基上填築堤壩施工安全的監控方法-孔壓係數B值控制法。
- The model can be used to determine formation pore pressure and the optimum drilling fluid density to stabilize borehole. 利用該模型可確定地層孔隙壓力和保持井眼穩定的最優鑽井液密度等參數。
- The residual strain is the additional shear strain created with the increase of pore pressure due to cyclic shear under initial shear stress. 殘餘應變是由於周期剪切引起孔隙壓力增長;在初始剪力作用下產生的附加的剪應變.
- The amplitudes of pore pressure increased notably with the increase of cyclic stress ratio, and the residual pore pressure also increased obviously. 當循環應力比增大時,動孔隙水壓力變化幅值顯著增加,而殘餘孔壓也較大。
- Formation drillability is related to formation compact degree and pore fracture degree,so NDR can reflect formation pore pressure state. 地層可鑽性與地層的壓實程度和孔隙破裂程度有關,因此NDR可以反映地層孔隙壓力的情況。
- By analyzing the results of the test the authors obtain a experiential curve about the coefficient of seepage, volumetric stress and pore pressure. 並經過分析可知,若其埋藏深度較淺,可以通過增加孔隙壓來改善它的滲透性;
- The degradation of undrained shear strength is related to the cyclic strain and accumulated pore pressure produced by undrained clyclic loading. 並將波浪荷載作用使土樣內孔壓升高,有效應力降低,形成擬超固結現象的理論,應用到土樣不排水抗剪強度衰減與平均累積孔壓之間關係的分析;
- Quantitative Study on Abnormal Pore Fluid Pressure in Undercompacted Mudstone 欠壓實泥岩異常孔隙流體壓力的定量研究
- The study results show that the pore pressure and axial strain took on a fluctuant increasing process under cyclic shear loading. 研究表明,在循環荷載作用下,孔隙水壓力和軸嚮應變均是一個波動上升的過程。
- When the pore pressure is relatively low,the positive-charged polyglycol is mainly used to ensure the muds having good performance. 在地層孔隙壓力較低時,主要使用正電聚醇處理劑確保鑽井液具有良好的性能;
- In a silty seabed, the excess pore pressure mounts distinctly due to the progressive wave, whereas there is no such phenomenon in a sandy seabed. 採用波浪水槽模型試驗的方法,研究波浪荷載作用下砂質和粉質海床的孔壓響應問題。
- Water also can infiltrate the rock and significantly increase the rock's "pore pressure," which also can set off or hasten the arrival of a temblor. 水還可以滲透進入岩石顯著增加岩石的「孔隙壓力」,這也可能引發或加速地震的到來。