饶阳凹陷中央深潜山带钻井提速配套技术与应用

doi:10.3969/j.issn.1672-7703.2020.06.009

摘要/Abstract

摘要： 冀中坳陷饶阳凹陷中央深潜山带在钻井过程中存在地层倾角大、地层压力系统复杂、深部地层可钻性差、井壁易失稳、地温梯度高等技术难题。为了提高钻井速度、减少钻井成本、加快勘探开发进程，开展了非标井身结构优化、井口地面预移、简易控压钻井、个性化PDC 钻头设计、聚胺KCl 钻井液体系等技术研究，形成了钻井提速综合配套技术。YT1 井应用上述钻井提速配套技术，与邻井相比，平均机械钻速提高39.86%，复杂时效由5.4% 降为零，建井周期缩短44.19%，提速效果显著。

关键词: 饶阳凹陷, 潜山, 机械钻速, 井身结构, PDC 钻头, 聚胺KCl 钻井液

Abstract: There are a number of technical issues that affect the process of drilling in the central deep buried hill zone in the Raoyang Sag, Jizhong Depression. These include the large formation dip angle, complex formation pressure system, poor drillability of deep formations, instability of sidewalls, and a steep geothermal gradient. Technical research has been carried out with the objectives of increasing drilling speeds, reducing drilling costs, and accelerating the exploration and development process. Supporting technologies for fast drilling have been developed based on non-standard wellbore configuration optimization, surface pre-displacement of wellheads, simple managed pressure drilling, customized PDC bit design, polyamine KCl drilling fluid systems, etc. Following on-site application in Well YT1, average rate of penetration (ROP) increased by 39.86% compared with adjacent wells, the complex drilling time was reduced from 5.4% to zero, and the well construction period was shortened by 44.19%—a significant enhancement of drilling speed.

中图分类号:

张以明, 李晶莹, 罗玉财, 杨恺, 王东明, 曹小兵, 彭宇, 赵伟峰, 钟小军, 卢昊. 饶阳凹陷中央深潜山带钻井提速配套技术与应用[J]. 中国石油勘探, 2020, 25(6): 87-93.

Zhang Yiming, Li Jingying, Luo Yucai, Yang Kai, Wang Dongming, Cao Xiaobing, Peng Yu, Zhao Weifeng, Zhong Xiaojun, Lu Hao. Supporting technology for fast drilling and its application in the central deep buried hill zone in the Raoyang sag[J]. China Petroleum Exploration, 2020, 25(6): 87-93.

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