井下螺杆马达双向振动固井工具的研制
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摘要
在固井过程中,为了使不同体系下的水泥浆产生最有效的振动,研制了井下螺杆马达双向振动固井工具。该工具安装在管柱的底端,不会改变常规固井工艺。通过调整结构参数改变振动量级和振动频率,使水泥浆产生横向振动和轴向振动;通过结构设计和力学分析,得出了该工具横向振动频率和激振力公式。通过流体力学分析,得出了该工具轴向振动频率和水击压力公式。对该工具进行了水击力变化测试试验,测试结果表明:当入口流量为30 L/s时,水击力波动的幅值为0.5 MPa左右,满足设计要求。所得结果为该工具后续的结构参数调整和优化设计提供了理论指导。
In order to make the most effective vibration of cement slurry under different systems in cementing process,downhole PDM bidirectional vibration cementing tool has been developed. The tool is installed at the bottom of the cementing string and does not impact the conventional cementing process. The vibration magnitude and vibration frequency could bechanged by adjusting the structural parameters to produce the horizontal and vertical vibrations of the cement slurry. Through the structural design and mechanical analysis,the formula of the lateral vibration frequency and excitation force has been obtained. Through the hydrodynamic analysis,the formula of axial vibration frequency and water hammer pressure of the tool has been obtained. The test results of the tool's water hammer force show that the amplitude of hammer fluctuation is about 0. 5 MPa when the inlet flow rate is 30 L / s,which meets the design requirements. The study provides theoretical guidance for the follow-up adjustment and optimization of the structural parameters of the tool.
In order to make the most effective vibration of cement slurry under different systems in cementing process,downhole PDM bidirectional vibration cementing tool has been developed. The tool is installed at the bottom of the cementing string and does not impact the conventional cementing process. The vibration magnitude and vibration frequency could bechanged by adjusting the structural parameters to produce the horizontal and vertical vibrations of the cement slurry. Through the structural design and mechanical analysis,the formula of the lateral vibration frequency and excitation force has been obtained. Through the hydrodynamic analysis,the formula of axial vibration frequency and water hammer pressure of the tool has been obtained. The test results of the tool's water hammer force show that the amplitude of hammer fluctuation is about 0. 5 MPa when the inlet flow rate is 30 L / s,which meets the design requirements. The study provides theoretical guidance for the follow-up adjustment and optimization of the structural parameters of the tool.
引文
[1]ASLAKSON J,DOHERTY D,SMALLEY E.Preventing annular flow after cementing,one pulse at a time:Offshore gulf of Mexico cement pulsation field results[C]∥Paper 94230-MS Presented at the SPE Production Operations Symposium,April 16-19,2005,Oklahoma City,Oklahoma,USA.New York:SPE,2005.
[2]李玉海,赵立新,王军荣.振动固井技术综述[J].石油钻采工艺,1994,16(6):40-42.
[3]HABERMAN J P,WOLHART S L.Reciprocating cement slurries after placement by applying pressure pulses in the annulus[R].SPE 37619,1997.
[4]NEWMAN K,WOJTANOWICZ A,GAHAN B C.Cement pulsation improves gas well cementing[J].World Oil,2001,222(7):89-94.
[5]练章华,李文魁,陈小榆.顶部水泥脉冲振动的数学模型[J].石油学报,2001,22(1):83-88.
[6]CHIMMALGI V S,WOJTANOWICZ A K.Design of cement pulsation treatment in gas wells-model and field validation[J].Journal of Canadian Petroleum Technology,2005(6):44.
[7]聂翠平,李相方,叶登胜,等.可钻型低频自激震荡脉动固井装置的研制与应用[J].天然气工业,2012,32(9):74-76.
[8]丁士东,廖华林,李根生,等.井口脉冲压力在环空中传播规律分析[J].天然气工业,2007,27(2):57-59.
[9]廖华林,李根生,易灿,等.水力脉冲振动注水泥装置的设计与试验[J].中国石油大学学报(自然科学版),2008,32(1):47-50.
[10]丁士东,高德利,张克坚,等.脉冲振动对水泥浆想能影响的实验研究[J].自然科学进展,2007,17(9):1251-1257.
[11]王恩合,王学良,王学成,等.动态振动固井技术研究及现场试验[J].石油钻探技术,2011,39(4):57-60.
[12]薛亮,李帮民,刘爱萍,等.振动固井对泥饼的剪切作用机理研究[J].石油钻探技术,2011,39(4):53-56.
[13]吴波,刘金余,杨明合,等.新型涡轮式井下径向振动固井装置的研究与应用[J].复杂油气藏,2010,3(4):69-77.
[14]苏义脑.螺杆钻具研究及应用[M].北京:石油工业出版社,2001.
[15]杨树人.工程流体力学[M].北京:石油工业出版社,2006.
[2]李玉海,赵立新,王军荣.振动固井技术综述[J].石油钻采工艺,1994,16(6):40-42.
[3]HABERMAN J P,WOLHART S L.Reciprocating cement slurries after placement by applying pressure pulses in the annulus[R].SPE 37619,1997.
[4]NEWMAN K,WOJTANOWICZ A,GAHAN B C.Cement pulsation improves gas well cementing[J].World Oil,2001,222(7):89-94.
[5]练章华,李文魁,陈小榆.顶部水泥脉冲振动的数学模型[J].石油学报,2001,22(1):83-88.
[6]CHIMMALGI V S,WOJTANOWICZ A K.Design of cement pulsation treatment in gas wells-model and field validation[J].Journal of Canadian Petroleum Technology,2005(6):44.
[7]聂翠平,李相方,叶登胜,等.可钻型低频自激震荡脉动固井装置的研制与应用[J].天然气工业,2012,32(9):74-76.
[8]丁士东,廖华林,李根生,等.井口脉冲压力在环空中传播规律分析[J].天然气工业,2007,27(2):57-59.
[9]廖华林,李根生,易灿,等.水力脉冲振动注水泥装置的设计与试验[J].中国石油大学学报(自然科学版),2008,32(1):47-50.
[10]丁士东,高德利,张克坚,等.脉冲振动对水泥浆想能影响的实验研究[J].自然科学进展,2007,17(9):1251-1257.
[11]王恩合,王学良,王学成,等.动态振动固井技术研究及现场试验[J].石油钻探技术,2011,39(4):57-60.
[12]薛亮,李帮民,刘爱萍,等.振动固井对泥饼的剪切作用机理研究[J].石油钻探技术,2011,39(4):53-56.
[13]吴波,刘金余,杨明合,等.新型涡轮式井下径向振动固井装置的研究与应用[J].复杂油气藏,2010,3(4):69-77.
[14]苏义脑.螺杆钻具研究及应用[M].北京:石油工业出版社,2001.
[15]杨树人.工程流体力学[M].北京:石油工业出版社,2006.