多级变径随钻扩眼器研制及刀翼受力与钻压分配分析

王站稳; 张红; 施雷; 冯云; 涂忆柳

doi:10.11911/syztjs.2022044

多级变径随钻扩眼器研制及刀翼受力与钻压分配分析

王站稳^{1, 2,},
张红^{1, 2,},
施雷^{1, 2},
冯云^{1, 2},
涂忆柳^{1, 2}

1.
长江大学机械工程学院, 湖北荆州 434023
2.
湖北省油气钻完井工具工程技术研究中心, 湖北荆州 434023

基金项目: 国家采油装备工程技术研究中心开放基金资助项目“抽油机井杆管偏磨系统动力学行为研究”（编号：ZBKJ2021-A-02）、中海石油（中国）有限公司湛江分公司科研项目“水下采油树密封材料与结构优化研究”（编号：CCL2019ZJFN0853）联合资助

详细信息

作者简介:
王站稳(1996—)，男，河南淮阳人，2019年毕业于长江大学机械设计及自动化专业，2022年获长江大学机械工程专业硕士学位，主要从事钻井设备方面的研究工作。E-mail: 867623510@qq.com。

中图分类号: TE921
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出版历程
- 收稿日期: 2021-12-17
- 修回日期: 2022-11-07
- 网络出版日期: 2022-11-09
- 刊出日期: 2023-01-31

Development of a Reamer-while-Drilling with Multistage Variable Diameter and Analysis of Force on Blade and Weight-on-Bit Distribution

WANG Zhanwen^{1, 2,},
ZHANG Hong^{1, 2,},
SHI Lei^{1, 2},
FENG Yun^{1, 2},
TU Yiliu^{1, 2}

1.
School of Mechanical Engineering, Yangtze University, Jingzhou, Hubei, 434023, China
2.
Hubei Engineering Research Center for Oil & Gas Drilling and Completion Tools, Jingzhou, Hubei, 434023, China

摘要

摘要:
深层小井眼采用随钻扩眼器进行扩眼作业时存在井眼缩径、固井质量差和卡钻频繁等问题。为解决该问题，基于随钻扩眼器基本结构和工作原理，采用新型变径结构，研制了一种多级变径随钻扩眼器；建立了随钻扩眼尺寸与主动活塞轴向位移之间的函数关系，并分析了扩眼器刀翼的受力情况；采用双因素计算方法分析了该扩眼器的钻压分配情况，得到了随钻扩眼器钻压分配比对扩眼尺寸、钻具锐度及地层抗压强度的影响规律。分析得知，随钻扩眼器的钻压分配比与钻遇地层抗压强度、扩眼尺寸呈正比，与扩眼器锐度呈反比，该扩眼器的理论井径扩大率为7%～20%。研究认为：对随钻扩眼器进行钻压分配分析，可以指导扩眼器的设计及领眼钻头的选型；研制的多级变径随钻扩眼器为提高扩眼效率提供了技术支撑。
- 小井眼 /
- 随钻扩眼器 /
- 多级变径 /
- 受力分析 /
- 钻压分配 /
- 结构设计 /
- 井径扩大率
Abstract:
Reaming operations in deep slim holes with a reamer-while-drilling faced various problems, such as borehole shrinkage, poor cementing quality and frequent sticking etc. A reamer-while-drilling with multistage variable diameter was developed by adopting a new variable diameter structure following the basic structure and working principle of reamer-while-drilling. The functional relationship between the reaming-while-drilling size and the axial displacement of the active piston was built, and the forces on the blade of the reamer were investigated. The weight-on-bit distribution on the reamer was analyzed by the two-factor calculation method, and the influence laws of the weight-on-bit ratio of the reamer-while-drilling on reaming size, drilling tool sharpness, and the compressive strength of the formation were obtained. The analysis showed that the weight-on-bit ratio of the reamer-while-drilling was directly proportional to the compressive strength of the penetrated formation and reaming size, and inversely proportional to reamer sharpness. The theoretical borehole diameter enlargement rate of the reamer was 7%–20%. The paper concludes that weight-on-bit distribution analysis of reamers while drilling can guide the design of such reamers and the selection of pilot bits, and the developed reamer-while-drilling with multistage variable diameter can provide effective technical support for improving reaming efficiency.
- slim hole /
- reamer while drilling /
- multistage variable diameter /
- force analysis /
- weight-on-bit distribution /
- structural design /
- borehole diameter enlargement rate

HTML全文

图 1 多级变径随钻扩眼器的结构

Figure 1. Structure of reamer-while-drilling with multistage variable diameter

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图 2 多级变径随钻扩眼器的工作原理

Figure 2. Working principle of reamer-while-drilling with multistage variable diameter

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图 3 行程控制轮结构示意

Figure 3. Structure of stroke control wheel

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图 4 刀翼收放受力状态示意

Figure 4. Force state of blade during extension and retraction

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图 5 刀翼伸出形式

Figure 5. Extension form of blade

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图 6 扩眼直径与主动活塞轴向位移的关系

Figure 6. Relationship between reaming diameter and axial displacement of active piston

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图 7 多级变径随钻扩眼器钻压比与扩眼器和领眼钻头钻遇地层抗压强度之比的关系

Figure 7. Relationship between weight-on-bit ratio of reamer with multistage variable diameter and ratio of compressive strength of formation penetrated by reamer to that of formation penetrated by pilot bit

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图 8 多级变径随钻扩眼器钻压比与扩眼器和领眼钻头锐度之比的关系

Figure 8. Relationship between weight-on-bit ratio of reamer with multistage variable diameter and ratio of reamer sharpness to pilot bit sharpness

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