| 龙凤山气田火山岩地层个性化PDC钻头设计与应用 |
| 投稿时间：2023-07-11 修订日期：2023-11-03 点此下载全文 |
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| 中文摘要:长岭断陷龙凤山气田是中石化东北油气分公司近年来重要的增储上产阵地,其天然气产能约占分公司的35%,主力储层主要分布在火山岩发育的营城组和火石岭组。储层岩石石英含量高、研磨性强,导致机械钻速低、单只钻头进尺短,大幅增加了起下钻换钻头等非生产时间,严重制约钻井提速。本文通过开展岩石力学实验研究,利用测井资料建立并修正岩石力学剖面,开展PDC钻头复合片设计与优选,研发出一种适合该区块火山岩地层的6刀翼异型齿PDC钻头,现场应用3井次,较其他普通PDC钻头平均进尺提高42.2%,平均机钻提高36%,提速降本效果显著。 |
| 中文关键词:钻井提速 火山岩 岩石力学参数 异形齿 切削结构设计 PDC钻头 |
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| Design and application of personalized PDC bit for volcanic rock formation in Longfengshan Gas Field |
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| Abstract:Longfengshan Gas field in Changling fault depression is an important position for Sinopec Northeast Oil and Gas Company to increase storage and production in recent years, and its natural gas production capacity accounts for about 35% of the company. The main reservoirs are mainly distributed in Yingcheng Formation and Huoshiling Formation, which are developed in volcanic rocks. The high quartz content and abrasive nature of the reservoir rock results in low ROP and short footage per bit. The non-productive time such as tripping and bit changing is greatly increased, which seriously restricts the drilling speed. In this paper, the rock mechanics section is established and corrected by the well logging data through the experimental study of rock mechanics、 PDC bit composite design and optimization, personalized bit design, etc. A 6-blade shaped PDC bit was designed for the volcanic rock formation in the block. Compared with other common PDC bits, the average footage is increased by 42.2% and the average machine drilling is increased by 36%. The effect of increasing speed and reducing cost is remarkable. |
| keywords:Drilling speed up Volcanic rock Rock mechanics parameters Special-shaped teeth Cutting structure design PDC bit |
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