一袋化多功能钻井液的研究与应用

何瑞兵; 赖全勇; 许杰; 修海媚; 陈增海

doi:10.3969/j.issn.1001-5620.2020.06.011

一袋化多功能钻井液的研究与应用

doi: 10.3969/j.issn.1001-5620.2020.06.011

1. 中海石油有限天津分公司, 天津 300452;
2. 中海油田服务股份有限公司, 河北燕郊 065201

基金项目:

国家科技重大专项“渤海油田高效钻完井及配套技术示范”（2016ZX05058-002）

详细信息

作者简介:
何瑞兵，工程师，2002年毕业于西南石油学院油气井工程专业，从事钻井工程设计，钻井液及储层保护技术研究工作。电话（022）66501112

通讯作者:
赖全勇，电话18510516982；E-mail：laiqy@cosl.com.cn

中图分类号: TE254.3
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出版历程
- 收稿日期: 2020-09-19
- 刊出日期: 2020-12-28

Study and Application of “All-in-One Bag” Multi-Function Drilling Fluids

1. Tianjin Branch Company, CNOOC, Tianjin 300452;
2. China Oilfield Services Co., Ltd., Yanjiao, Hebei 065201

摘要

摘要: 采用分散聚合工艺合成了一种新型环保多功能添加剂PF-MFA，其同时兼具增黏提切、包被抑制、滤失控制等多种功能；以其作为唯一核心添加剂，搭配海水基液和加重剂，研发了一套新型一袋化钻井液体系。该钻井液组成简单、性能高效，当PF-MFA加量为1%时，80℃热滚后体系仍具有较高的黏度、切力和较强的抑制性，API滤失量控制在6.5mL以下，而且抗盐抗钙抗污染能力突出，可抗20% NaCl或15%的污染土，抗钙可达2% CaCl₂，另外，体系具有环保可降解的特点。该一袋化钻井液体系在渤海蓬莱PL19-3油田V40井进行了应用并取得了成功，现场应用表明，新型一袋化钻井液体系材料用量少，性能稳定，配制维护简单，能够满足地层相对简单的生产井和调整井钻井作业。
- 多功能处理剂 /
- 一袋化钻井液 /
- 环境保护 /
- 抗盐抗钙
Abstract: A new environmentally friendly multi-function drilling fluid additive PF-MFA was synthesized through dispersion polymerization. PF-MFA can be used as viscosifier, gelling agent, shale encapsulator, shale inhibitor and filter loss reducer. A new “all-in-one bag” drilling fluid was formulated with PF-MFA as the unique core additive, seawater and weighting agent as the auxiliary additives. This new drilling fluid has simple composition and high performance. A drilling fluid treated with 1% PF-MFA, after hot rolling at 80 ℃, still had high viscosity, gel strengths and strong inhibitive capacity, the API filter loss was controlled at less than 6.5 mL. The salt, clay and calcium(CaCl₂) resistance of this drilling fluid were 20%, 15% and 2%, respectively. This drilling fluid is also biodegradable and is thus environmentally friendly. This “all-in-one bag” drilling fluid has been successfully used in the well V40 in the Block PL19-3 in Penglai, Bohai. Field operation showed that less amount of drilling fluid additives was required for the “all-in-one bag” drilling fluid to achieve the same goal. Stable and easy to maintain properties as well as simple composition of the “all-in-one bag” drilling fluid can satisfy the needs of drilling production wells and adjustment wells penetrating relatively easy-going formations.
- Multi-function additive /
- “All-in-one bag” drilling fluid /
- Environment protection /
- Salt resistant and calcium resistant

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参考文献(13)

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