Design of Shaped Cutter PDC Bit for Deep Hard Plastic Mudstone

doi:10.12388/j.issn.1673-2677.2023.03.001

Xinjiang Oil & Gas ›› 2023, Vol. 19 ›› Issue (3): 1-9.DOI: 10.12388/j.issn.1673-2677.2023.03.001

• OIL AND GAS EXPLORATION • Previous Articles Next Articles

Design of Shaped Cutter PDC Bit for Deep Hard Plastic Mudstone

1.MOE Key Laboratory of Petroleum Engineering，China University of Petroleum （Beijing），Changping 102249，Beijing，China；
2. Sinopec Shengli Oilfield Service Co.，Ltd.，Dongying 257000，Shandong，China；
3.Project Department of Western Oil and Gas Exploration，Sinopec Shengli Oilfield Company，

Online:2023-09-10 Published:2023-09-10

适用于深层硬塑性泥岩的异形齿PDC钻头设计

1.中国石油大学（北京）石油工程教育部重点实验室，北京  102249；
2.中国石化胜利石油工程有限公司，山东东营  257000；
3.中国石化胜利油田西部油气勘探项目部，山东东营  257000。

通讯作者: 高德利（1958-），1990年毕业于石油大学（北京）油气田开发工程专业，博士，中国科学院院士，长期从事油气井工程领域的教学和科研工作。（Tel）010-89733702（E-mail）gaodeli@cup.edu.cn
作者简介:刘维（1986-），2014年毕业于美国南卫理公会大学机械工程专业，博士，教授，主要从事油气井工程领域的教学和科研工作。（Tel）010-89733087（E-mail）wei.liu@cup.edu.cn
基金资助:
国家自然科学基金重点项目“复杂结构‘井工厂’立体设计建设基础研究”（52234002）；国家自然科学基金创新研究群体项目“复杂油气井钻井与完井基础研究”（51821092）；北京市自然科学基金面上项目“超高钻压下PDC钻头齿在干热岩地层长寿命高效破岩机理研究”（2232060）。

Abstract

Abstract:

With oil and gas exploration and development approaching the deep-burial，deep-water and unconventional fields，the encountered formations become increasingly complex. Deep mudstone formations exhibit strong hard plastic characteristics during drilling，resulting in difficulties in penetrating of cutters into formations and low rates of penetration （ROP）. Given the challenge of improving ROP in hard plastic mudstone，rock-breaking simulation tests of PDC （Polycrystalline Diamond Compact） cutters were conducted for hard plastic formations，and the rock-breaking effects of various shaped cutters were analyzed. The results indicated that the 3D-shaped cutter exhibits the best rock-breaking efficiency and certain durability: it delivers a maximum ROP improvement of 116.4% in the hard plastic mudstone in Shengli Luojia Oilfield. Furthermore，a staggered cutter arrangement design，combining axe-shaped and 3D-shaped cutters，was proposed for drilling deep and complex formations，like sand-mudstone interbedding formations，which delivers the highest ROP increment of 215.7% in Yongjin Oilfield in Junggar Basin. Additionally，potential measures for enhancing ROP in hard plastic mudstone were discussed. The design principles of "sharp breakthrough，plane advancing and intensive scraping with small-diameter cutters" are recommended to improve the drilling efficiency. The research findings provide valuable insights for optimizing the design of PDC bits for hard plastic mudstone.

Key words:

PDC bit, shaped cutter, hard plastic mudstone, ROP enhancement, customized bit design

摘要：

随着油气勘探开发向深层、深水、非常规领域发展，钻遇地层越来越复杂，其中深部泥岩地层在钻进过程中表现出极强的硬塑性特征，导致切削齿难以吃入地层、钻头机械钻速缓慢。针对硬塑性泥岩地层提速难题，开展了聚晶金刚石复合片钻头（PDC）切削齿模拟破岩试验，对比分析了多种异形齿的破岩效果。研究结果表明，弯刀齿的破岩效率最佳且兼具一定的耐用性，在胜利罗家油田硬塑性泥岩地层实现机械钻速最高提升116.4%；斧形齿和弯刀齿交错布齿钻头设计适用于砂泥互层等深部复杂地层，在准噶尔盆地永进油田实现机械钻速最高提升215.7%。讨论了硬塑性泥岩地层潜在的提速措施，建议采用“尖锐突破，平面推进，小齿密刮”的钻头设计原则，以实现高效破岩钻进。研究成果为硬塑性泥岩地层PDC钻头优化设计提供了参考。

关键词:

PDC钻头, 异形齿, 硬塑性泥岩, 钻井提速, 个性化钻头设计

CLC Number:

TE242 ','1');return false;" target="_blank">
TE242

LIU Wei, FENG Chaochao, WAN Xuxin, ZHANG Zengbao, WEI Jiusen, GAO Deli.

Design of Shaped Cutter PDC Bit for Deep Hard Plastic Mudstone [J]. Xinjiang Oil & Gas, 2023, 19(3): 1-9.

刘维, 冯超超, 万绪新, 张增宝, 未九森, 高德利. 适用于深层硬塑性泥岩的异形齿PDC钻头设计[J]. 新疆石油天然气, 2023, 19(3): 1-9.

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Design of Shaped Cutter PDC Bit for Deep Hard Plastic Mudstone

适用于深层硬塑性泥岩的异形齿PDC钻头设计

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