指向式旋转导向工具造斜能力影响因素研究
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摘要
国内对于指向式旋转导向工具造斜能力的研究较少,如果不了解指向式旋转导向工具造斜性能的影响因素,施工中就不能充分发挥其轨迹控制能力。根据底部钻具组合纵横弯曲法,分别建立了工具外筒及心轴纵横弯曲连续梁模型,并根据导向原理,建立了井斜趋势角分析模型,在此基础上分析了BHA结构参数、钻压、钻头各向异性和岩石可钻性对工具造斜能力的影响规律。分析结果表明,心轴第一跨和第二跨长度、偏置机构位置及偏置力大小对指向式旋转导向工具的造斜能力影响较大;指向式旋转导向工具的造斜能力不易受地层环境的影响,相对于推靠式工具更加稳定,适用范围更广。
There is little research on the deflection capability of point-the-bit rotary steering tool,however,if the factors affecting the deflecting ability of this tool were not known,its performance in trajectory control cannot be fully displayed.Based on the vertical and horizontal bending of BHA,the continuous-beam mechanics models for the outer cylinder and the mandrel are established respectively. And according to the results of BHA mechanics analysis,the inclination trend analysis model is also established. Then the influence of BHA parameters,WOB,drill bit anisotropy and rock drillability on the tool deflection capability is analyzed. The analysis results show that the lengths of the first and the second span of the mandrel,the position of bias unit,and the magnitude of bias force have greater influence on the tool's deflecting capability. The deflecting capability of point-the-bit rotary steering tool is not easily affected by the formation environment,it is more stable than the push-the-bit rotary steering tool. Therefore,it will have more applications.
There is little research on the deflection capability of point-the-bit rotary steering tool,however,if the factors affecting the deflecting ability of this tool were not known,its performance in trajectory control cannot be fully displayed.Based on the vertical and horizontal bending of BHA,the continuous-beam mechanics models for the outer cylinder and the mandrel are established respectively. And according to the results of BHA mechanics analysis,the inclination trend analysis model is also established. Then the influence of BHA parameters,WOB,drill bit anisotropy and rock drillability on the tool deflection capability is analyzed. The analysis results show that the lengths of the first and the second span of the mandrel,the position of bias unit,and the magnitude of bias force have greater influence on the tool's deflecting capability. The deflecting capability of point-the-bit rotary steering tool is not easily affected by the formation environment,it is more stable than the push-the-bit rotary steering tool. Therefore,it will have more applications.
引文
[1]姜伟.旋转导向偏心稳定器力学特性研究[J].中国海上油气,2009,21(3):176-179.
[2]张进双,余志清.静态式可控偏心器旋转导向钻井工具造斜能力分析[J].石油钻探技术,2000,28(5):45-48.
[3]吕健,蔡冲,杨甘生.偏心环组对指向式导向系统性能的影响研究[J].探矿工程(岩土钻掘工程),2014,41(11):52-56.
[4]吕建国,刘宝林,李清涛.指向式旋转导向钻井系统旋转轴力学模型[J].探矿工程(岩土钻掘工程),2009,36(12):29-32.
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[7]Sugiura J.Optimal BHA design for steerability and stability with configurable rotary-steerable system[C]//SPE Asia Pacific Oil and Gas Conference and Exhibition.Society of Petroleum Engineers,2008.
[8]Zhang Y,Samuel R.Analytical Model to Estimate the Directional Tendency of Point and Push-the-Bit BHAs[C]//SPE Annual Technical Conference and Exhibition.Society of Petroleum Engineers,2015.
[9]白家祉,苏义脑.井斜控制理论与实践[M].北京:石油工业出版社,1990:50-70.
[10]管志川,史玉才,夏焱,等.底部钻具组合运动状态及钻进趋势评价方法研究[J].石油钻探技术,2005,33(5):27-30.
[11]李军,李东春,熊方明,等.塔中碳酸盐岩超深水平井钻具组合优化设计[J].钻采工艺,2016,39(5):26-29.
[12]郑德帅,高德利,冯江鹏,等.推靠式和指向式旋转导向工具的造斜性能研究[J].石油钻采工艺,2011,33(6):10-13.
[13]甲方手册编写组.甲方手册(上册)[M].北京:石油工业出版社,1990:945-947.
[2]张进双,余志清.静态式可控偏心器旋转导向钻井工具造斜能力分析[J].石油钻探技术,2000,28(5):45-48.
[3]吕健,蔡冲,杨甘生.偏心环组对指向式导向系统性能的影响研究[J].探矿工程(岩土钻掘工程),2014,41(11):52-56.
[4]吕建国,刘宝林,李清涛.指向式旋转导向钻井系统旋转轴力学模型[J].探矿工程(岩土钻掘工程),2009,36(12):29-32.
[5]Nygaard R,Hartmann R A,Hareland G,et al.Steering Response for Directional Wells in Soft Formations in Deepwater Developments[C]//Offshore Technology Conference.Offshore Technology Conference,2008.
[6]Sugiura J.Systematic testing with push-and point-the-bit rotary-steerable systems leads to the optimal BHA design for stability,steerability and borehole quality[C]//AADE Fluids Conference and Exhibition,Houston,Texas,USA.2008:8-9.
[7]Sugiura J.Optimal BHA design for steerability and stability with configurable rotary-steerable system[C]//SPE Asia Pacific Oil and Gas Conference and Exhibition.Society of Petroleum Engineers,2008.
[8]Zhang Y,Samuel R.Analytical Model to Estimate the Directional Tendency of Point and Push-the-Bit BHAs[C]//SPE Annual Technical Conference and Exhibition.Society of Petroleum Engineers,2015.
[9]白家祉,苏义脑.井斜控制理论与实践[M].北京:石油工业出版社,1990:50-70.
[10]管志川,史玉才,夏焱,等.底部钻具组合运动状态及钻进趋势评价方法研究[J].石油钻探技术,2005,33(5):27-30.
[11]李军,李东春,熊方明,等.塔中碳酸盐岩超深水平井钻具组合优化设计[J].钻采工艺,2016,39(5):26-29.
[12]郑德帅,高德利,冯江鹏,等.推靠式和指向式旋转导向工具的造斜性能研究[J].石油钻采工艺,2011,33(6):10-13.
[13]甲方手册编写组.甲方手册(上册)[M].北京:石油工业出版社,1990:945-947.