| 潘庄区块煤层气U型水平井下套管技术探讨 |
| 投稿时间：2016-04-05 修订日期：2016-08-10 点此下载全文 |
| 引用本文：王立峰,徐培远,刘卫娟,等.潘庄区块煤层气U型水平井下套管技术探讨[J].钻探工程,2016,43(10):197-199.WANG Li-feng,Xu Pei Yuan,LIU Wei-juan,et al. Discussion on the Downhole Casing Technology for U Shape CBM Wells of Panzhuang Block[J]. Drilling Engineering, 2016,43(10):197-199. |
| 摘要点击次数: 829 |
| 全文下载次数: 672 |
|
| 基金项目:河南省国土资源厅“两权价款”地质科研项目(编号：2013-5) |
|
| 中文摘要:下入生产套管的煤层气U型井具有产气量高、成本低的优点，逐渐成为潘庄区块煤层气开发的主要井型。潘庄区块煤层埋深一般在500 m以浅，同时要求U型井的水平段在1000 m左右，生产套管的下入成为该区块垂深浅、水平段长的煤层气U型井的技术难题，经过多口井试验，优化钻井轨迹的平滑度，采用原钻具、短螺旋扶正器和生产套管内置钻铤3次划眼，以及严格控制下套管程序，可提高套管一次性下入的成功率，并提高生产效率。 |
| 中文关键词:煤层气 U型井 水平井 下套管 潘庄区块 |
| |
| Discussion on the Downhole Casing Technology for U Shape CBM Wells of Panzhuang Block |
|
|
| Abstract:Because of the advantages of high gas production and low cost,U-shaped CBM well with production casing has gradually become main well type. The buried depth of coalbed is generally less than 500m in Panzhuang block and the horizontal section for U-shaped well is required to be about 1000m. For the shallow vertical depth and long horizontal section, production casing running is a technical difficulty in U-shaped CBM well of this block. In the tests in several wells, by optimization of drilling trajectory smoothness, 3 times of sweeping with original drilling tools, short spiral centralizer and drill collar in production casing as well as strict control on casing lowering program, the success rate of one-time casing lowering can be increased with higher production efficiency. |
| keywords:CBM U shape well horizontal well casing running Panzhuang block |
| 查看全文 查看/发表评论 下载PDF阅读器 |
