徐闻区块复合有机盐钻井液技术

吴再绪; 王亚宁; 郑和; 顾克江

doi:10.3969/j.issn.1001-5620.2015.03.026

徐闻区块复合有机盐钻井液技术

doi: 10.3969/j.issn.1001-5620.2015.03.026

中石化江苏石油工程有限公司钻井处, 江苏扬州

基金项目: 中石化石油工程公司科技项目"调整井提高二界面胶结质量技术应用研究"(SG13-40T);江苏石油工程公司科技项目"复合有机盐钻井液技术研究与应用"(JS13019)。

详细信息

作者简介:
吴再绪,工程师,2004年毕业于石油大学石油工程专业,现在主要从事钻井液技术研究与新技术推广工作。地址:江苏省扬州市江都区邵伯甘棠路101号中石化江苏石油工程有限公司钻井处;邮政编码225261;电话13013743911;E-mail:wuzaixu.jsyt@sinope.com。

中图分类号: TE254.3
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出版历程
- 收稿日期: 2015-01-15
- 刊出日期: 2015-05-31

Study and Application of Compound Organic Salt Drilling Fluid in Block Xuwen

Drilling Department of Sinopec's Jiangsu Petroleum Engineering Ltd. Co., No. 101 Shaobogantang Lu, Jiangdu District, Yangzhou City, Jiangsu 225261, China

摘要

摘要: 徐闻区块位于北部湾盆地,由涠西南凹陷、乌石凹陷、迈陈凹陷、福山凹陷和雷东凹陷组成。该地区下部地层岩性以微裂隙发育的硬脆性泥页岩为主,坍塌压力系数较大,易发生井壁坍塌,导致钻井过程中井下复杂、事故频繁发生。针对以上地层特点,在该区块积极推广应用了复合有机盐钻井液体系。现场应用表明,该体系具有很强的抑制性和防塌能力。推广应用的3 口井与同区块的邻井相比,机械钻速提高了44%,平均钻井周期缩短了近26 d,复杂事故时效大幅度降低,平均井径扩大率减小了50%。说明徐闻区块流沙港组地层的井壁失稳问题得到了明显改善,电测成功率也大幅提高,很好地满足了该区块钻井施工的需要。
- 复合有机盐钻井液 /
- 井壁稳定 /
- 硬脆性泥页岩 /
- 钻井液性能 /
- 徐闻区块
Abstract: Block Xuwen is located in Beibu Gulf Basin, composed of Weixinan Sag, Wushi Sag, Fushan Sag and Leidong Sag. The deeper formations are mainly hard and brittle fractured shales with high collapsing pressures and are easy to collapse. Compound organic salt drilling fluid had been chosen to drill the unstable shale formations to prevent the borehole from collapsing. Compared with offset wells, three wells drilled with organic salt drilling fluid had rate of penetration increased by 44%, drilling time reduced by 26 days (average), and rate of hole enlargement reduced by 50%, indicating that borehole instability was greatly mitigated. Wireline logging, because of improved borehole stability, was performed with higher rate of success.
- Compound organic salt drilling fluid /
- Borehole wall stabilization /
- Hard and brittle shale /
- Performance of drilling fluid /
- Block Xuwen

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参考文献(5)

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