气体钻井钻柱振动特性及控制措施

doi:10.7623/syxb201202017

石油学报 ›› 2012, Vol. 33 ›› Issue (2): 293-297.DOI: 10.7623/syxb201202017

气体钻井钻柱振动特性及控制措施

祝效华 1,2　贾彦杰 1　童　华 1

1 西南石油大学机电工程学院　四川成都　610500；2 西南石油大学油气藏地质及开发工程国家重点实验室　四川成都　610500

收稿日期:2011-09-06 修回日期:2011-11-21 出版日期:2012-03-25 发布日期:2012-05-17
通讯作者: 祝效华
作者简介:祝效华，男，1978年7月生，2005年获西南石油大学博士学位，现为西南石油大学教授，主要从事管柱力学和井下工具力学方面的科研与教学工作。
基金资助:
国家自然科学基金项目(No.50804040)和西南石油大学研究生创新基金（GIFSB1106）资助。

Vibrating characteristics of drill string in gas drilling and its control measures

ZHU Xiaohua 1,2　JIA Yanjie 1　TONG Hua 1

Received:2011-09-06 Revised:2011-11-21 Online:2012-03-25 Published:2012-05-17

摘要/Abstract

摘要：

为解决气体钻井钻柱频繁失效的实际问题，综合考虑钻柱纵横扭耦合振动，根据气体钻井全井段钻柱系统动力学模型分析了气体钻井钻柱的振动特性，并从减振抑振角度提出了空气锤钻井工艺和采用减振减阻工具两种振动控制措施。以川西某实钻井气体钻进段为例，在利用美国ESSO公司现场数据验证全井段钻柱系统三向耦合振动力学模型可行性与结果可靠性的基础上，量化评价了常规气体钻井和采用振动控制措施气体钻井工艺的钻柱振动特性。对比分析表明，这两种工艺措施的减振抑振效果明显，不仅能够有效减弱气体钻井中下部钻柱的振动强度，而且使上部钻柱的动态应力也大大降低。

关键词: 气体钻井, 钻柱振动, 振动控制, 空气锤, 减振减阻工具, 失效预防

Abstract:

To solve an engineering problem of severe vibration and frequent failure of drill string in gas drilling, we analyzed vibrating behaviors of drill string during gas drilling based on a dynamic model for the whole-interval drill string in gas drilling, and presented two control measures against vibration in terms of anti-vibration and anti-drag, namely a well-drilling technique of air hammer and the adoption of anti-vibration and anti-drag tools. Taking a gas drilling section of a field well in west Sichuan as an example, we quantitatively evaluated vibrating characteristics of drill string both in conventional gas drilling and in drilling with vibration control measures， on condition that the feasibility and reliability of the triaxial coupling vibration mechanics model for the whole-interval drill string system were validated with the field data provided by the ESSO Production Co. A comparison indicates that these two technologic measures are of clear effectiveness in anti-vibration and anti-drag, they can not only effectively weaken the vibration intensity of the lower drill string in gas drilling but also remarkably reduce the dynamic stress of the upper drill string.

Key words: gas drilling, drill string vibration, vibration control, air hammer, anti-vibration and anti-drag tool, precaution of failure

祝效华　贾彦杰　童　华. 气体钻井钻柱振动特性及控制措施[J]. 石油学报, 2012, 33(2): 293-297.

ZHU Xiaohua　JIA Yanjie　TONG Hua. Vibrating characteristics of drill string in gas drilling and its control measures[J]. Editorial office of ACTA PETROLEI SINICA, 2012, 33(2): 293-297.

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气体钻井钻柱振动特性及控制措施

Vibrating characteristics of drill string in gas drilling and its control measures

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