Optimal Design and Applications of PDC Bits for Lianggaoshan Formation in Sichuan Basin

doi:10.3969/j.issn.1004-132X.2026.07.002

China Mechanical Engineering ›› 2026, Vol. 37 ›› Issue (7): 1548-1555.DOI: 10.3969/j.issn.1004-132X.2026.07.002

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Optimal Design and Applications of PDC Bits for Lianggaoshan Formation in Sichuan Basin

LIU Weiji¹^,²^,³(), LIU Zhihang¹, ZHU Xiaohua¹^,²^,³(), GUO Jianhua⁴, YUAN Heyi⁵, HE Ling¹^,⁴, DENG Kaichuang¹

^1.School of Mechatronic Engineering，Southwest Petroleum University，Chengdu，610500
^2.MOE Key Laboratory of Oil and Gas Equipment，Chengdu，610500
^3.Geothermal Energy Research Center，Southwest Petroleum University，Chengdu，610500
^4.Engineering Technology Research Institute，Southwest Oil & Gasfield Company，Chengdu，610017
^5.Development Division，Southwest Oil&Gas Field Company，Chengdu，610051

Received:2025-06-12 Online:2026-07-25 Published:2026-08-18
Contact: ZHU Xiaohua

四川盆地凉高山组聚晶金刚石复合片钻头优化设计与应用

刘伟吉¹^,²^,³(), 刘郅航¹, 祝效华¹^,²^,³(), 郭建华⁴, 袁和义⁵, 何灵¹^,⁴, 邓开创¹

^1.西南石油大学机电工程学院, 成都, 610500
^2.石油天然气装备教育部重点实验室, 成都, 610500
^3.西南石油大学地热能研究中心, 成都, 610500
^4.西南油气田工程技术研究院, 成都, 610017
^5.西南油气田开发事业部, 成都, 610051

通讯作者: 祝效华
作者简介:刘伟吉，男，1989年生，教授、博士研究生导师。研究方向为钻井岩石破碎学与钻头。发表论文120余篇，授权发明专利20余项，出版专著2部。E-mail： lwj2017_swpu@163.com
祝效华^*（通信作者），男，1978年生，教授、博士研究生导师。研究方向为管柱力学与井下工具设计。发表论文460篇，授权发明专利70项，出版专著5部。E-mail： zxhth113@163.com。
基金资助:
国家自然科学基金(52225401)

Abstract

Abstract:

Taking the Φ215.9 mm wellbore of a horizontal section at Lianggaoshan in Nanchong as the research subject， a particle swarm-slime mold optimization algorithm for force balance design was employed， specifically addressing the characteristics of highly abrasive formations. The final design solution adopted a configuration featuring with six blades， double-row staggered track cutters and hybrid cutter layouts.Two PDC bits designed in accordance with the scheme were subsequently applied in the Lianggaoshan Formation. Compared with other bits， they exhibite excellent performance in footage and rate of penetration（ROP）. The total footage achieved by the first bit is approximately equivalent to the cumulative footage of the previous three bits， setting a new record for the longest single-trip footage in this formation. The second bit was pulled out prematurely after drilling 96.29 meters due to the loss of signals from downhole tools. Compared with bits that achieved a similar footage， the ROP of this bit is increased by at least 25.9%. Additionally， the drilling time is shortened， the weight on bit（WOB） is lower， rock-breaking efficiency is enhanced， and the bit's conditions remain over 90% new after tripping out. Field tests confirm that the personalized PDC bit design for the Lianggaoshan Formation significantly improves rock-breaking efficiency and service life.

Key words: Lianggaoshan formation, polycrystalline diamond compact （PDC）bit, high abrasiveness, cutter layout optimization, drilling speed-up

摘要：

以南充某井ϕ215.9 mm井眼凉高山水平井段为研究对象，针对高研磨性地层特点，采用粒子群-黏菌优化算法进行力平衡设计，最终制定了6刀翼双排齿异轨高差混合布齿的设计方案。设计的聚晶金刚石复合片（PDC）钻头在凉高山地层钻井作业中共使用2只，与其他钻头对比，进尺和机械钻速表现出色。第一只钻头的总进尺约为前序3只钻头的总和，创造了该地层中最长单趟进尺记录；第二只钻头下井钻进96.29 m后，由于井下仪器失去信号被迫起钻，与相近进尺量的钻头比较，该只钻头的机械钻速至少提高25.9%，且钻时更短、钻压更小，破岩效率更高，钻头起钻后新度大于90%。现场实验表明，制定的凉高山组PDC钻头设计方案在破岩效率和使用寿命上都得到显著提高。

关键词: 凉高山组, PDC钻头, 高研磨性, 布齿优化, 钻井提速

CLC Number:

TE921.1

LIU Weiji, LIU Zhihang, ZHU Xiaohua, GUO Jianhua, YUAN Heyi, HE Ling, DENG Kaichuang. Optimal Design and Applications of PDC Bits for Lianggaoshan Formation in Sichuan Basin[J]. China Mechanical Engineering, 2026, 37(7): 1548-1555.

刘伟吉, 刘郅航, 祝效华, 郭建华, 袁和义, 何灵, 邓开创. 四川盆地凉高山组聚晶金刚石复合片钻头优化设计与应用[J]. 中国机械工程, 2026, 37(7): 1548-1555.

Figures/Tables 13

Fig.1 Wellbore structure diagram and formation physical characteristics of a shale oil well in Nanchong

Tab.1 Stratigraphic parameters of Lianggaoshan formation

井深/m	层位	可钻性级值		硬度/MPa		研磨性
2756~3300	凉二段	范围	均值	范围	均值	范围	均值
2756~3300	凉二段	5~7	5.753	2500~2600	2538.406	70~80	73.814

Fig.2 The usage of bits in the 705~2866 m well section of a shale oil well in Nanchong

Fig.3 Design route of customized bits

Fig.4 Flowchart of the particle swarm-slime mould optimization algorithm

Fig.5 Force balance calculation and spatial cutter distribution analysis of PDC drill bit

Fig.6 3D models of bits

Fig.7 Usage of bits in the horizontal well section of Lianggaoshan

Fig.8 Lithology relationship diagram at drilling time

Fig.9 Fine sandstone cuttings

Fig.10 Comparison of three bits

Fig.11 The failure conditions of each blade of the customized bit 1 after tripping out of the well

Fig.12 The failure conditions of each blade of the customized bit 2 after tripping out of the well

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Optimal Design and Applications of PDC Bits for Lianggaoshan Formation in Sichuan Basin

四川盆地凉高山组聚晶金刚石复合片钻头优化设计与应用

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