For the influen- cing factors of drilling time,drilling fluid inlet flow rate when the hydrocarbon reservoirs are drilled into,the total hydrocarbon detecting values will be different for the same reservoir conditions,and even the difference is great.
氣測錄井隨鉆檢測的全烴值是發(fā)現(xiàn)和評價(jià)油氣層的重要參數(shù),但由于鉆開油氣層時(shí)受鉆時(shí)、入口鉆井液流量等因素的影響,相同儲(chǔ)集層條件下其全烴檢測值有所不同,甚至相差較大。
Applying finite element method,the dynamic characteristics of drill string with cone bit in straight hole were simulated,and the whirl,deformation and the dynamic stress in air drilling were compared with the ones in drilling fluid drilling.
應(yīng)用有限元方法,仿真了空氣鉆井時(shí)斜直井眼中帶牙輪鉆頭鉆柱的動(dòng)力學(xué)特性,比較了空氣鉆井和鉆井液鉆井條件下鉆柱的渦動(dòng)、變形以及動(dòng)態(tài)應(yīng)力狀況,探討了空氣鉆井鉆柱失效的動(dòng)力學(xué)機(jī)理。