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- This is the BHA[bottom hole assembly] log. 這是井下鉆具組合的記錄本。
- Make up bottom hole assembly (BHA). 組合下部鉆具。
- Please pull out of hole and change bottom hole assembly! 請起鉆,換下部鉆具結構!
- Computer simulation of drillstring axial vibration and online monitoring of bottom hole condition. 鉆柱軸向振動(dòng)仿真與井底狀態(tài)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(gè)問(wèn)題,提出了一種存在井底積液時(shí)的修正等時(shí)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(zhì)油藏油井抽汲生產(chǎn)將使井底壓力變化十分復雜。
- A kind of rotary steering stabilizer used in a common rotary bottom hole assembly to control well path was developed. 在普通旋轉鉆具的基礎上,研制了一種旋轉的近鉆頭穩定器,它可以將鉆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. 討論了下部鉆具組合分析的基本假設、基本方程和相應的邊界條件。
- Equations for calculation parameter of directional split of rock by controlled blasting are used to determine the hole spacing and explosive charge,it is effective and reasonable in practice. 按照切縫藥包定向斷裂控制爆破參數計算公式確定的炮孔間距和裝藥量,經(jīng)現場(chǎng)實(shí)際應用證明是有效的和合理的。
- 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(shí)試井資料會(huì )出現異常，使原有理論無(wú)法處理相應的測試資料或處理的結果誤差較大。
- Based on the analysis of the blasting factors,this paper analyzed the effect of different hole spacing upon the hard top coal by pre-splitting blast and thus obtained reasonable blasting. 在探討爆破工藝參數的基礎上,利用數值模擬技術(shù)分析不同炮孔間距對該礦堅硬頂煤預裂爆破的影響并得出合理的炮孔布置間距,為頂煤預裂爆破弱化方案的設計提供了理論依據。
- 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，研究了鉆井過(guò)程中巖石破碎機理及形成過(guò)程，提出了一種以井底返出的巖屑為對象的巖石可鉆性測試方法。
- 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(chǎng)常用的PDC取心鉆頭為原型,充分考慮排屑槽和切削齒對于井底流動(dòng)的影響,建立了與實(shí)際相接近的PDC取心鉆頭井底流場(chǎng)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(zhù)鉆井技術(shù)的進(jìn)步，以控制井眼軌道為目的的下部鉆具組合發(fā)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(guò)平衡鉆井方式打開(kāi)油氣層時(shí)，井底壓力高于地層壓力，鉆井流體會(huì )向地層滲濾甚至漏失。
- Pre-splitting blasting experiments were carried out to obtain normal pre-splitting blasting parameters such as hole diameter, hole space, gunpowder charge line density, and uncoupling factor. 通過(guò)大量的預裂爆破試驗，得出了適用于該邊坡的炮孔直徑、炮孔間距、線(xiàn)裝藥密度、不耦合系數等一系列常規預裂爆破參數。
- 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(shí)試井資料會(huì )出現異常,使原有理論無(wú)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(wú)量綱壓力表達式及壓降曲線(xiàn)，還可適用于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. 泥漿脈沖信號在傳輸過(guò)程中主要受鉆探泵、井底動(dòng)力機、泥漿中的氣泡及活動(dòng)鉆具的干擾;
- 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、表皮系數、竄流系數以及彈性?xún)θ荼葘τ^(guān)測井井底壓力的影響。
