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- This is the BHA[bottom hole assembly] log. 這是井下鑽具組合的記錄本。
- Make up bottom hole assembly (BHA). 組合下部鑽具。
- Please pull out of hole and change bottom hole assembly! 請起鑽,換下部鑽具結構!
- Computer simulation of drillstring axial vibration and online monitoring of bottom hole condition. 鑽柱軸向振動模擬與井底狀態監測方法探討。
- When the flange hole of coal blower casing and inlet box is countersunk, the problem of connecting hole back spot facing can be effectively solved. 它可以有效地解決在鍃煤氣鼓風機鑄鐵機殼和進氣箱的開箱法蘭把接孔時,連接孔背面的鍃平問題。
- According to this problem,this paper proposes a modified isochronal well test with bottom hole liquid loading. 針對這個問題,提出了一種存在井底積液時的修正等時試井資料解釋方法。
- Bottom hole pressure changes complicatedly in suction well of double porosity reservoir. 雙重孔隙介質油藏油井抽汲生產將使井底壓力變化十分複雜。
- A kind of rotary steering stabilizer used in a common rotary bottom hole assembly to control well path was developed. 在普通旋轉鑽具的基礎上,研製了一種旋轉的近鑽頭穩定器,它可以將鑽柱穩定在井眼截面的需要位置,以控制井眼軌道。
- The basic assumptions, equations and boundary conditions for bottom hole assembly (BHA) analysis were discussed. 討論了下部鑽具組合分析的基本假設、基本方程和相應的邊界條件。
- To study the passive force characteristics of the bearingless slice motor,by 2D magnetic circuit analysis,the axial suspension force model and back torque model are built for non-PM motor. 為了研究無軸承薄片電機的被動懸浮特性,通過2D磁路分析的方法,建立了非永磁薄片電機的2D軸向懸浮力模型和回復力矩模型,並進行了有限元模擬驗證。
- The modified isochronal well test data with bottom hole liquid loading will have abnormity, causing a fail of processing with the original theory or much error. 摘要存在井底積液的修正等時試井資料會出現異常,使原有理論無法處理相應的測試資料或處理的結果誤差較大。
- The security on the Eastern side was still full of holes back then. Then what? 東方陣營的安全措施那時候真是千瘡百孔。然後呢?
- With the fractal geometry theory, this paper puts forward a new rock drillability testing method by selecting detritus from bottom hole as object. 利用分形幾何理論,研究了鑽井過程中岩石破碎機理及形成過程,提出了一種以井底返出的岩屑為對象的岩石可鑽性測試方法。
- The bottom hole flow physical model of a kind of PDC coring bits is established considering the effect of junk slot and teeth layout in this paper. 以一種現場常用的PDC取心鑽頭為原型,充分考慮排屑槽和切削齒對於井底流動的影響,建立了與實際相接近的PDC取心鑽頭井底流場的物理模型。
- Toughened glass front door and high density net hole back door, can meet the request of equipment protection, ventilation dispersing air, observing machine operation status from outside. 鋼化玻璃前門及高密度網孔後門,可同時解決設備保護、通風散熱、外部觀察機器運行狀態三方面的使用要求;
- With the progress of drilling technology, bottom hole assembly (BHA) has been developed rapidly to control well trajectory. 隨著鑽井技術的進步,以控制井眼軌道為目的的下部鑽具組合發展迅速。
- In routine overbalanced drilling, the bottom hole pressure towers above the formation pressure so that the mud fluid will leak into the formation. 常規過平衡鑽井方式打開油氣層時,井底壓力高於地層壓力,鑽井流體會向地層滲濾甚至漏失。
- The modified isochronal well test data with bottom hole liquid loading will have abnormity,causing a fail of processing with the original theory or much error. 存在井底積液的修正等時試井資料會出現異常,使原有理論無法處理相應的測試資料或處理的結果誤差較大。
- The given reservoir dimensionless pressure express formula and pressure drop curves can be used in condensate gas wells and the gas wells with accumulated fluid in bottom hole. 給出的氣藏無量綱壓力表達式及壓降曲線,還可適用於凝析氣井及井筒帶積液的氣井。
- In the course of transmission, mud pulse signal mainly disturbed by drilling pump,engine in the bottom hole, air bladder contained in mud and movement of drilling equipment. 泥漿脈衝信號在傳輸過程中主要受鑽探泵、井底動力機、泥漿中的氣泡及活動鑽具的干擾;