石油矿场机械
石油礦場機械
석유광장궤계
OIL FIELD EQUIPMENT
2015年
8期
1-5,6
,共6页
气体钻井%摩阻%转矩%影响因素
氣體鑽井%摩阻%轉矩%影響因素
기체찬정%마조%전구%영향인소
gas drilling%friction%torque%influential factor
随着国内外气体钻井技术的不断发展，气体钻井技术与水平井等钻井技术相结合在致密低渗油气藏开发方面展现了巨大的潜力。对于气体钻井来说，气体钻水平段时摩阻转矩问题突出，大福增加了水平段轨迹控制的难度和风险，因此，不仅需要有良好的钻井设备，还需要依靠钻井工艺技术及基础理论支撑。以钻柱力学中软杆模型为基础对气体钻井钻柱摩阻转矩影响因素进行分析研究。研究结果表明：随着摩擦因数的增加摩擦阻力、转矩相应增加；随着转速的增加摩阻力减小，转矩增加；随着起钻速度的增加摩擦阻力增加，转矩减小。对普通钻井液钻井和气体钻井进行了对比，气体钻井的摩阻转矩要大于普通钻井液钻井。同时分析了接头对气体钻井摩阻力及转矩的影响。
隨著國內外氣體鑽井技術的不斷髮展，氣體鑽井技術與水平井等鑽井技術相結閤在緻密低滲油氣藏開髮方麵展現瞭巨大的潛力。對于氣體鑽井來說，氣體鑽水平段時摩阻轉矩問題突齣，大福增加瞭水平段軌跡控製的難度和風險，因此，不僅需要有良好的鑽井設備，還需要依靠鑽井工藝技術及基礎理論支撐。以鑽柱力學中軟桿模型為基礎對氣體鑽井鑽柱摩阻轉矩影響因素進行分析研究。研究結果錶明：隨著摩抆因數的增加摩抆阻力、轉矩相應增加；隨著轉速的增加摩阻力減小，轉矩增加；隨著起鑽速度的增加摩抆阻力增加，轉矩減小。對普通鑽井液鑽井和氣體鑽井進行瞭對比，氣體鑽井的摩阻轉矩要大于普通鑽井液鑽井。同時分析瞭接頭對氣體鑽井摩阻力及轉矩的影響。
수착국내외기체찬정기술적불단발전，기체찬정기술여수평정등찬정기술상결합재치밀저삼유기장개발방면전현료거대적잠력。대우기체찬정래설，기체찬수평단시마조전구문제돌출，대복증가료수평단궤적공제적난도화풍험，인차，불부수요유량호적찬정설비，환수요의고찬정공예기술급기출이론지탱。이찬주역학중연간모형위기출대기체찬정찬주마조전구영향인소진행분석연구。연구결과표명：수착마찰인수적증가마찰조력、전구상응증가；수착전속적증가마조력감소，전구증가；수착기찬속도적증가마찰조력증가，전구감소。대보통찬정액찬정화기체찬정진행료대비，기체찬정적마조전구요대우보통찬정액찬정。동시분석료접두대기체찬정마조력급전구적영향。
With the development of gas drilling technology at home and abroad,the joint applica-tion of gas drilling and horizontal drilling technology showed tremendous potential in the develop-ment of tight low permeability oil and gas reservoir.For gas drilling,the matter of torque and drag in horizontal section by gas drilling method is severe,which increases more difficulty and hazard on horizontal drilling.Therefore good drilling equipment is not only needed,but also drilling tech-nology and basic theory support are needed.On the basis of predecessors’research in this paper, influential factors of friction and torque of drill string in gas drilling have been analyzed based on soft-string model in drill string mechanics.Research results show that with the increase of friction coefficient,the friction and torque increase correspondingly;with the increase of rotate speed the friction decrease and the torque increase;with the increase of tripping out speed the friction in-crease and the torque decrease.The conventional drilling fluid drilling and gas drilling are com-pared,friction and torque of drill string in gas drilling is larger than that in ordinary drilling fluid. At the same time,the influence of joint for gas drilling friction and torque has also been analyzed.
