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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。
- 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。
- 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。
- 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。
- 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;
- The influence of wellbore storage, skin factor, interporosity flow coefficient and elastic storativity ratio to the bottom hole pressure of the observation well were analyzed. 分析了井筒儲存、表皮係數、竄流係數以及彈性儲容比對觀測井井底壓力的影響。
- A mechanical model of bottom hole assembly (BHA) with eccentric bits is established and the solution of this model was given by means of numerical method. 採用靜力分析的方法,建立了偏心鑽頭底部鑽具組合的力學模型,並完成了對力學模型的求解。應用數值計算方法,分析了偏心鑽頭底部鑽具組合的受力和變形特性。
- It is important for directing timely the drilling engineering to forecast and try to get the data under the undrilled sub bottom hole pressure during the drilling. 在鑽井過程中,準確求取或預測出井底以下尚未鑽遇地層的壓力,對實時指導鑽井作業具有重要的意義。
- His strength in a crisis is an ace in the hole. 臨危不懼是他的看家本領。
