东庞煤矿DB2-E5井侧钻水平钻进技术

Sidetracking Horizontal Drilling Technology in Well DB2-E5 of Dongpang Coal Mine

摘要:

DB2-E5井是冀中能源公司东庞煤矿奥陶系灰岩注浆钻探工程的第一口侧钻水平注浆井。分析了该井的钻进难点，给出了井身结构设计和分支井设计轨迹等，详细介绍了该井实钻技术措施及所采用的钻具组合和钻进参数。该井的成功，对东庞煤矿奥陶系灰岩注浆防水、治水及降低钻井成本具有重要意义。

Abstract:

DB2-E5 is the first sidetracking horizontal well for grouting in Dongpang. This paper analyzes the drilling difficulties, presents the well structure desigh and branch well design trajectory and introduces the real drilling technical measures and DHA as well as drilling parameters in detail. The successful completion of this well is of great significance for Ordovician grouting, waterproofing, water control and drilling cost reduction.