| 腰平1井钻井设计和施工难点分析 |
| |
| 引用本文： | 沈建中. 腰平1井钻井设计和施工难点分析[J]. 中外能源, 2011, 16(1): 61-64 |
| |
| 作者姓名： | 沈建中 |
| |
| 作者单位： | 华东石油局工程技术设计研究院,江苏,南京,210031 |
| |
| 摘 要： | 腰平1井是松南气田第一口火山岩气藏水平井,主要目的层为营城组。由于井眼轨道设计需考虑靶点垂深的不确定性和工具造斜率的不确定性,故选择了易于控制和调整的"直—增—稳—增—水平"五段制轨道类型。井身结构设计以简化结构、提高钻井速度为目的,具体为技术套管下至泉二段造斜点上部,并配套相关工艺技术。欠平衡设计时采取井筒环空循环介质循环当量密度略低于据储层孔隙压力折合的当量密度即可的思路,地层流体一定要有控制地流入井筒,同时还需考虑地层稳定性。针对大尺寸井眼防斜打直、火山岩地层可钻性差、多套地层护壁难度大等施工难点采取相应对策,取得了较好的施工效果。腰平1井钻井周期仅135.83d,比设计提前了15.1%;平均机械钻速2.60m/h,比同区块直井提高了6.7%;最大井斜为83°,实际井底水平位移868.90m,水平段长度480.61m。建议今后进一步开展东部地区提高深井大尺寸井眼钻井速度、火山岩气藏钻井方式等方面的深入研究。
|
| 关 键 词： | 火山岩 水平井 井眼轨道 井身结构 欠平衡钻井 机械钻速 |
Drilling Design and Difficulties Analysis of well Yaoping 1 |
| |
| Shen Jianzhong. Drilling Design and Difficulties Analysis of well Yaoping 1[J]. China Foreigh Energy, 2011, 16(1): 61-64 |
| |
| Authors: | Shen Jianzhong |
| |
| Affiliation: | Shen Jianzhong(Engineering Technology Design Research Institute of East China Petroleum Bureau,Nanjing Jiangsu 210031) |
| |
| Abstract: | The well Yaoping 1 is the first horizontal well in the volcanic rock gas reservoir of Songnan gasfield,whose intended zone is the Yingcheng formation.Based on considering the uncertainty of vertical depth of target spot and build-up rate by tools,straight-increment-stability-incremen-horizon five-interval well trajectory is selected because of being easy to control and adjust.Well bore configuration should be simple and favorable for enhancing drilling rate.Intermediate casing will be run at upper deflectio... |
| |
| Keywords: | volcanic rock horizontal well wellbore trajectory well bore configuration under balanced drilling rate of penetration |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
