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- There is no pressure gradient through the thickness of the film. 貫穿流體膜厚度無(wú)壓力梯度。
- Mesoscale Nonhydrostatic and Hydrostatic Pressure Gradient Forces Theory. 中尺度非流體靜力和流體靜力氣壓梯度力理論。
- The smaller the permeability, the bigger the start-up pressure gradient. 滲透率越小，啟動(dòng)壓力梯度越大。
- When fracturing, the fracture pressure of reservoir is crucial. 壓裂施工時(shí),儲層破裂壓力直接決定水力壓裂的成功與否。
- The atmosphere pressure gradient is an inverse measure of the spacing of the isobars on a weather map. 氣壓梯度與天氣圖上等壓線(xiàn)的間隔大小成反比。
- There should be pressure difference display device when there is a pressure gradient. 有壓差梯度的區域無(wú)壓差顯示裝置。
- The two kinds of statistical model are still practical and feasible approaches to calculate formation fracture pressure. 兩種統計模型都不失為預測地層破裂壓力的可行方法。
- The formation pressure gradient curve in the same depth of logging is computed by equivalent depth method. 通過(guò)等效深度法計算出與測井曲線(xiàn)采樣深度對應的地層壓力梯度曲線(xiàn)。
- In addition, the effect of startup pressure gradient of Bingham fluid in stratum pressure distribution are analyzed. 分析了賓漢流體的啟動(dòng)壓力梯度對地層壓力分布的影響。
- This method has been use in 12 wells for 19 predictions, proved by DST and Leak-off test to be 90. 91% success for pore pressore and 96. 15% succes for fracture pressure. 該方法經(jīng)過(guò)12口井;19井次預報;已經(jīng)DST和Leak off試驗證實(shí)孔隙壓力預報成功率為90.;91%25;
- Test results indicate that goal of high speed ignition can be attained under the pressure gradient of steepest descent. 試驗結果表明，在高減壓梯度下可以達到快速點(diǎn)火的目的。
- Many experiments justify that there is a threshold pressure gradient (TPG) in low permeability reservoirs. 試驗表明 ,低滲透油藏存在啟動(dòng)壓力梯度。
- Fracture pressure is the key parameter designed for hydraulic fracturing.On the other hand, acidizing pretreatment is one of the measures reducing fracture pressure. 破裂壓力是水力壓裂設計的關(guān)鍵參數，而酸化預處理是降低破裂壓力的措施之一。
- The results showed large pressure gradient and velocity gradient of the material in the four intermeshing regions. 計算結果表明:四螺桿的四個(gè)嚙合區具有較大的壓力梯度、速度梯度,其混合性能明顯好于雙螺桿擠出機。
- The pressure gradient is osmotically generated and results from the loading at the source and unloading at the sink. 韌皮部裝載：指光合作用產(chǎn)物從葉肉細胞輸入到篩分子一伴胞復合體的整個(gè)過(guò)程。
- Release of the heat of fusion is believed to alter the pressure gradient in such a way as to diminish the destructive winds near the storm center. 人們認為融解熱的釋放可以改變氣壓梯度,結果減小風(fēng)暴中心附近的破壞性風(fēng)力。
- Even if the pressure gradient is partly balanced by the fluid acceleration, its order of magnitude is usually no larger than the hydrostatic gradient. 即使壓強梯度部分地被流體加速度平衡，其數量級通常也不大于靜壓梯度。
- The software used to calculate "safe" mud weight window had been developed. Only a few parameters are needed , the software can calculate rock properties, formation pressure, in-situ stresses , collapse pressure and fracture pressure along the well bore. 在前四步的基礎上，編制了“基于測井資料的安全鉆井液密度窗口預測”應用軟件，該軟件主要利用測井資料鉆前預測安全鉆井液密度窗口，要求輸入的參數少，操作方便，能輸出巖石力學(xué)參數曲線(xiàn)、地層壓力曲線(xiàn)、地應力曲線(xiàn)、坍塌壓力、剪切破壞壓力曲線(xiàn)與破裂壓力曲線(xiàn)，對鉆井工程具有很強的現實(shí)指導意義。
- A number of overall correlations have been developed for the prediction of the pressure gradient in the vertical flow of gas-liquid mixtures. 為了預測氣液混合物垂直流動(dòng)的壓力梯度，已經(jīng)得出了許多整體相關(guān)規律。
- Through the analysis and acquisition of the seismic interval velocity, This paper has comprehensively studied and evaluated fracture pressure prediction method for the typical formations. 本文從地震層速度的分析與求取入手,對典型的地層破裂壓力預測方法進(jìn)行了綜合評價(jià)研究。
