一种耐高温交联淀粉钻井液降滤失剂的制备与评价

doi:10.3969/j.issn.1006-6535.2022.04.023

特种油气藏 ›› 2022, Vol. 29 ›› Issue (4): 164-168.DOI: 10.3969/j.issn.1006-6535.2022.04.023

一种耐高温交联淀粉钻井液降滤失剂的制备与评价

李佳琦¹, 杨海彤¹, 葛兵², 杨笑¹, 姜汉桥¹, 孙明波³

1.中国石油大学(北京),北京 102249;
2.中国石油西部钻探工程有限公司,新疆克拉玛依 834000;
3.中国石油大学(华东),山东青岛 266580

收稿日期:2021-07-07 修回日期:2022-05-25 出版日期:2022-08-25 发布日期:2023-01-09
通讯作者: 姜汉桥(1957—),男,教授,博士生导师,1982年毕业于华东石油学院采油工程专业,1988年毕业于石油大学(华东)油气田开发专业,获硕士学位,现从事油气田开发方面的教学与研究工作。
作者简介:李佳琦(1996—),男,2018年毕业于中国石油大学(华东)石油工程专业,现为中国石油大学(北京)油气田开发专业在读硕士研究生,从事油气田开发方面的研究工作。
基金资助:
国家“973”项目“陆相致密油高效开发基础研究”(2015CB250900)

Preparation and Application of Cross-linked Starch as Filtrate Reducer with High Temperature Tolerance for Drilling Fluid

Li Jiaqi¹, Yang Haitong¹, Ge Bing², Yang Xiao¹, Jiang Hanqiao¹, Sun Mingbo³

1. China University of Petroleum (Beijing), Beijing 102249, China;
2. CNPC Xibu Drilling Engineering Company Limited, Karamay, Xinjiang 834000, China;
3. China University of Petroleum (East China), Qingdao, Shandong 266580, China

Received:2021-07-07 Revised:2022-05-25 Online:2022-08-25 Published:2023-01-09

摘要/Abstract

摘要： 针对常规钻井液降滤失剂耐高温性能不足的缺点,以玉米淀粉为原料,以三偏磷酸钠为交联剂,采用交联反应的方法,合成了一种耐高温的交联淀粉钻井液降滤失剂,并采用六速旋转黏度计、泥浆失水测定仪等设备评价其性能。实验结果表明:采用三偏磷酸钠为交联剂制备的交联淀粉具有良好的耐温性能,当钻井液中交联淀粉质量分数为1.5%时,在160 ℃的条件下仍具有较好的降滤失性能,API滤失量为11.0 mL,黏度为33.5 mPa·s,与羧甲基淀粉降滤失剂相比,该降滤失剂抗高温效果明显,且不增黏。在西南油田元坝区块某评价井应用结果表明,在150 ℃条件下有效降低了钻井液的滤失量,同时控制了钻井液黏度,提高了钻井液整体耐温性能,现场应用效果良好。该研究成果对交联淀粉钻井液降滤失剂的制备具有一定的参考价值。

关键词: 降滤失剂, 交联淀粉, 三偏磷酸钠, 耐高温, 钻井液

Abstract: In view of the poor high-temperature tolerance of conventional filtrate reducers for drilling fluid, a cross-linked starch as filtrate reducer with high temperature tolerance for drilling fluid was synthesized by cross-linking reaction method with corn starch taken as raw material and sodium trimetaphosphate as cross-linking agent. As found in the test results, the cross-linked starch prepared by using sodium trimetaphosphate as the cross-linking agent was highly tolerant to temperature; when the mass fraction of cross-linked starch in the drilling fluid was 1.5%, it was still effective in filtrate loss reduction at 160 ℃, with an API filtrate loss of 11.0 mL and a viscosity of 33.5 mPa·s; compared with carboxymethyl starch used as filtrate reducer, this filtrate reducer was distinctly effective in high temperature tolerance without viscosity increase. The results of its application on an appraisal well in Yuanba Block of Southwest Oilfield showed that it effectively reduced the filtrate loss of drilling fluid at 150 ℃, and at the same time controlled the drilling fluid viscosity and improved the overall temperature tolerance of the drilling fluid. The field application effect was excellent. The results of the study can serve as references for the preparation of cross-linked starch as filtrate reducer for drilling fluid.

Key words: filtrate reducer, cross-linked starch, sodium trimetaphosphate, high-temperature tolerance, drilling fluid

中图分类号:

TE254

李佳琦, 杨海彤, 葛兵, 杨笑, 姜汉桥, 孙明波. 一种耐高温交联淀粉钻井液降滤失剂的制备与评价[J]. 特种油气藏, 2022, 29(4): 164-168.

Li Jiaqi, Yang Haitong, Ge Bing, Yang Xiao, Jiang Hanqiao, Sun Mingbo. Preparation and Application of Cross-linked Starch as Filtrate Reducer with High Temperature Tolerance for Drilling Fluid[J]. Special Oil & Gas Reservoirs, 2022, 29(4): 164-168.

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一种耐高温交联淀粉钻井液降滤失剂的制备与评价

Preparation and Application of Cross-linked Starch as Filtrate Reducer with High Temperature Tolerance for Drilling Fluid

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