鉆柱壓應力 的英文怎麼說
中文拼音 [zhēnzhùyāyīnglì]
鉆柱壓應力
英文
drill string compressive stress-
Abstract : tight trips often occur for hole undergauge during drilling in east sichuan oilfield. the paper analysis the causes of hole undergauge, proposes preventive and treatment measures which are to optimize design from geologic structure features, to use suitable fluid column pressure, to select different drilling fluid types, to adopt advanced drilling technology and perfect field technical management. therefore, good economic benefit will be obtained
文摘:川東構造在鉆探作業中因井眼縮徑造成起下鉆的阻卡時有發生，文中對造成井眼縮小的原因進行分析並劃分為五類因素，提出應在地質構造特徵方面優化設計，採用合適的液柱壓力，選擇不同的鉆井液類型，使用先進的鉆井工藝和完善現場技術管理等措施進行預防和處理，將取得重大的經濟效益。The present results indicate that the diamond element always yields the highest heat transfer, followed by cube and waterdrop pin - fin. however, the pressure drop for the diamond pin is higher compared to the cube and waterdrop pin - fin. arrays with geometric parameters x / d = 2. 7 elements generally cause the greater heat transfer and pressure loss than those with x / d = 3. 3 and x / d = 4
研究結果表明：鉆石形擾流柱排換熱最強，方形次之，液滴形最弱，相應地鉆石形擾流柱排壓力損失也最大，方形次之，液滴形最弱；小間距（ x / d = 2 . 7 ）在換熱較強的同時壓力損失也高於其他兩種間距。
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