Adaptability of PDC drill bit with push-the-bit rotary steerable tools for inclined drilling

被引：0

作者：

Zhang H. ^{[1
]}

Fu H. ^{[1
,2
]}

Qin Y. ^{[3
]}

Shi H. ^{[1
]}

Li X. ^{[4
]}

Fan Y. ^{[4
]}

Wang X. ^{[1
]}

Liu K. ^{[1
]}

机构：

[1] School of Petroleum Engineering, China University of Petroleum(Beijing), Beijing

[2] SINOPEC Jianghan Oilfield, Qianjiang

[3] China National Petroleum Corporation, Beijing

[4] Logging Technology Research Institution, China National Petroleum Corporation, Beijing

来源：

Zhongguo Shiyou Daxue Xuebao (Ziran Kexue Ban)/Journal of China University of Petroleum (Edition of Natural Science) | 2023年 / 47卷 / 02期

关键词：

cutting structure; interaction model; PDC bit; push-the-bit rotary steerable systems;

D O I：

10.3969/j.issn.1673-5005.2023.02.008

中图分类号：

学科分类号：

摘要：

In the drilling process of using PDC bits with the push-the-bit rotary steerable tools, there is a problem that the well inclination drilling rate cannot meet the required standard, in which the adaptability of the cutting structure of the PDC bit to the push-the-bit rotary steerable tools needs to investigated. In this paper, a BHA mechanical analysis model of the push-the-bit rotary steerable tool was established based on the continuous beam-column theory considering the influence of well expansion during the drilling process. In combination with the interaction models of PDC bit and rock formation, it was proposed to use the inclination angle as an index to evaluate the adaptability of the push-the-bit rotary steerable tool and the PDC bit. The influence of the bit structure parameters on the inclined drilling ability of the push-the-bit rotary steerable tool was quantitatively analyzed. The modeling results show that, the shallower inner cone depth and shorter crown height of the PDC bit, the better inclined drilling ability of the rotary steerable tool, and the greater the back rake angle and the larger friction angle of the PDC bit,the stronger the tool̍s inclined drilling ability. The PDC bit gauge has a great influence on the inclined drilling ability of the tools, the smaller the active gauge and passive gauge area of the bit, the stronger the inclined drilling ability, and the narrower the passive gauge blade of the drill bit, the stronger the inclined drilling ability. When the total length of the drill bit gauge is constant, as the ratio of the active gauge to passive gauge area becomes smaller, the inclined drilling ability first increases and then decreases, and there is the best active gauge and passive gauge ratio to maximize the inclined drilling ability of the push-the-bit rotary steerable tool. Relevant experiments were also conducted and compared with the modeling results. The predicted value of the model̍s inclination drilling angle is basically the same as that of the experiments, with a maximum error of only 6. 71%, which can verify the accuracy of the model. © 2023 University of Petroleum, China. All rights reserved.

引用

页码：73 / 80

页数：7

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