Preparation of hydrothermal carbon microspheres and their mechanism in enhancing the high-temperature stability of water-based drilling fluids

钟汉毅; 陈长志; 李树森; 李大奇; 高泽明; 邱正松; 黄维安; 牟庭波

doi:10.7623/syxb202512011

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Preparation of hydrothermal carbon microspheres and their mechanism in enhancing the high-temperature stability of water-based drilling fluids

更新时间：2026-02-02

- Preparation of hydrothermal carbon microspheres and their mechanism in enhancing the high-temperature stability of water-based drilling fluids
- ACTA PETROLEI SINICA Vol. 46, Issue 12, Pages: 2358-2373(2025)
- 作者机构：
  
  1. 深层油气全国重点实验室(中国石油大学(华东)),山东,青岛,266580
  2. 中国石油大学(华东)石油工程学院,山东,青岛,266580
  3. 中石化石油工程技术研究院有限公司,北京,102206
- 作者简介：
- 基金信息：
- DOI：10.7623/syxb202512011
  CLC： TE254
- Published Online：09 January 2026，
  
  Published：2025
- 稿件说明：
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钟汉毅, 陈长志, 李树森, 李大奇, 高泽明, 邱正松, 黄维安, 牟庭波. 水热炭微球的制备及稳定水基钻井液高温性能作用机理[J]. 石油学报, 2025, 46(12): 2358-2373.

钟汉毅, 陈长志, 李树森, et al. Preparation of hydrothermal carbon microspheres and their mechanism in enhancing the high-temperature stability of water-based drilling fluids[J]. ACTA PETROLEI SINICA, 2025, 46(12): 2358-2373.
钟汉毅, 陈长志, 李树森, 李大奇, 高泽明, 邱正松, 黄维安, 牟庭波. 水热炭微球的制备及稳定水基钻井液高温性能作用机理[J]. 石油学报, 2025, 46(12): 2358-2373. DOI： 10.7623/syxb202512011.

钟汉毅, 陈长志, 李树森, et al. Preparation of hydrothermal carbon microspheres and their mechanism in enhancing the high-temperature stability of water-based drilling fluids[J]. ACTA PETROLEI SINICA, 2025, 46(12): 2358-2373. DOI： 10.7623/syxb202512011.

摘要

深层致密油气储层钻井过程中

聚合物类处理剂容易高温降解而导致无黏土相水基钻井液流变和滤失等性能恶化。针对传统高温稳定剂的不足

以β-环糊精为原料

通过"绿色"水热炭化反应制备出炭微球Cy-CMS

对其结构进行综合表征

分别考察不同温度作用前后Cy-CMS对不同聚合物溶液、AM-AMPS-NVP(Cop-1)共聚物实验基浆和无黏土相水基钻井液流变性和滤失性的影响

并探讨其作用机理。研究表明

Cy-CMS表面含有丰富的亲水性含氧官能团

内部为疏水性聚呋喃环

为典型的核壳结构。传统的生物聚合物和抗高温合成聚合物分别在120~140 ℃和180~200 ℃作用后降解失效

加入0.5%Cy-CMS热滚后表观黏度保持率均大于80%。Cop-1实验基浆中加入Cy-CMS

240 ℃热滚后其表观黏度保持率最高达95 %

220 ℃长期静置老化条件下其性能恶化得到明显延缓。以生物聚合物构建的无黏土相水基钻井液中加入0.5%Cy-CMS

160 ℃热滚前后流变性和滤失性保持稳定。Cy-CMS可吸收钻井液中溶解氧并将其降至10

-2

mg/L数量级

同时有效清除高温下产生的自由基

避免聚合物热氧化降解。此外

Cy-CMS还可与聚合物形成桥连结构

进一步提高聚合物的热稳定性。Cy-CMS能显著提高水基钻井液高温甚至超高温作用下的热稳定性

明显优于传统高温稳定剂Na

为深层致密油气无黏土相水基钻井液高温流变和滤失性能调控提供了全新途径。

Abstract

During the drilling of deep tight oil and gas reservoirs

polymer-based additives are susceptible to high-temperature degradation

resulting in the deterioration of properties such as rheology and filtration loss in bentonite-free water-based drilling fluids. To address the limitations of traditional high-tem

perature stabilizers

carbon microspheres (Cy-CMSs)were synthesized via a green hydrothermal carbonization process using β-cyclodextrin as a precursor. The structure of Cy-CMSs was comprehensively characterized

and their effects on the rheological and filtration loss properties of various polymer solutions

experimental base slurries of the AM-AMPS-NVP (Cop-1)copolymer

and bentonite-free water-based drilling fluids were evaluated before and after thermal treatment at different temperatures. The underlying mechanisms of Cy-CMSs were also investigated. The study demonstrated that Cy-CMSs possess abundant hydrophilic oxygen-containing functional groups on the surface and hydrophobic polyfuran rings in the core

exhibiting a typical core-shell structure. Traditional biopolymers and high-temperature-resistant synthetic polymers degrade and lose their functionality after exposure to high temperatures of 120-140 ℃ and 180-200 ℃

respectively. However

the addition of 0.5%Cy-CMSs results in an apparent viscosity retention rate exceeding 80%after hot rolling. When Cy-CMSs were incorporated into the Cop-1 experimental base slurry

the apparent viscosity retention rate reached up to 95%after hot rolling at 240 ℃. Furthermore

under long-term static aging conditions at 220 ℃

the degradation of performance was significantly delayed. After adding 0.5%Cy-CMSs to the bentonite-free water-based drilling fluid formulated with biopolymers

both the rheological and filtration properties remained stable after hot rolling at 160 ℃. Cy-CMSs effectively absorb dissolved oxygen in the drilling fluid

reducing its concentration to the order of 10

-2

mg/L

while also scavenging free radicals generated under high temperatures

thus preventing the thermal oxidative degradation of polymers. In addition

Cy-CMSs can form bridged structures with polymers

further enhancing their thermal stability. Cy-CMSs significantly improve the high-temperature and even ultra-high-temperature thermal stability of water-based drilling fluids

outp

erforming the traditional high-temperature stabilizer Na

. This provides a novel approach for regulating the high-temperature rheological and filtration properties of bentonite-free water-based drilling fluids used in deep and tight oil and gas reservoirs.

关键词

Keywords

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