| 苏里格南区块小井眼井二开一趟钻钻井技术 |
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| 引用本文： | 沈兆超,霍如军,郁燕飞,董易凡,倪小伟,雷宇. 苏里格南区块小井眼井二开一趟钻钻井技术[J]. 石油钻探技术, 2020, 48(6): 15-20. DOI: 10.11911/syztjs.2020081 |
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| 作者姓名： | 沈兆超 霍如军 郁燕飞 董易凡 倪小伟 雷宇 |
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| 作者单位： | 1.中国石油集团渤海钻探工程有限公司第三钻井工程分公司,天津 300280 |
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| 摘 要： | 为了进一步提高苏里格南区块小井眼井的钻井速度、降低开发成本,开展了二开一趟钻技术攻关研究。进行了钻头改型,通过优化钻头布齿和流线设计,以增强钻头的稳定性及抗研磨性;优化了螺杆设计,以延长螺杆的使用寿命、提高输出功率;优化了钻进参数,实行激进化钻进,以提高钻头的破岩效率;优选了钻具组合,调整了井眼轨迹,以保证一趟钻完成长稳斜段、降斜段钻进。SN00XX平台2口小井眼井开展了二开一趟钻试验,其中SN00XX-02井实现了二开螺杆一趟钻完钻,SN00XX-04井实现了二开螺杆、钻头均一趟钻完钻;另外2口井应用一趟钻钻井技术后钻井周期缩短7.6%。研究结果表明,苏里格南部小井眼井二开一趟钻钻井技术能够顺利实施,且钻井提速效果明显,可为后续苏里格南区块小井眼井钻井提速提效提供技术支持。
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| 关 键 词： | 小井眼 一趟钻 井眼轨迹 钻头 优化设计 苏里格南区块 |
| 收稿时间： | 2019-12-11 |
One-Trip Drilling Technology of the Second-Spud Section for Slim-Holes in the Southern Sulige Block |
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| Affiliation: | 1.The No.3 Drilling Engineering Company, CNPC Bohai Drilling Engineering Company Limited, Tianjin, 300280, China2.Southern Sulige Operation Company, PetroChina Changqing Oilfield Company, Erdos, Inner Mongolia, 016299, China |
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| Abstract: | In order to further enhance the penetration rate of slim holes in the Southern Sulige Block and reduce the development cost, technical research on the one-trip drilling technology of the second-spud section has been carried out. For this purpose, by means of bit modification, the bit teeth arrangement and streamline designs were optimized to enhance the bit stability and abrasion resistance. The positive displacement motor (PDM) design was optimized to prolong the service life and output power of PDM. The drilling parameters were optimized to realize an aggressive drilling and improve the rock breaking efficiency of bit. The BHA was optimized and the well trajectory was reasonably adjusted to ensure that the drilling of the long hold section and drop section could be fulfilled in one trip. Tests of one-trip technology of the second-spud section were carried out on two slim holes at SN00XX platform. Among these wells, Well SN00XX-02 achieved one-trip drilling of the second-spud section with the PDM. Well SN00XX-04 achieved one-trip drilling of both the PDM and the bit in the second-spud section. The technology of one-trip drilling was successfully applied in other two wells, and the drilling cycles were shortened by 7.6%. The research results showed that one-trip drilling technology could effectively implemented in the second-spud section, with remarkable improved penetration rate, which provided a technical support for the follow-up rapid drilling of slim-holes in the Southern Sulige Block. |
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