第34卷第4期 2017年7月
钻井液与
究
井液
DRILLINGFLUID&COMPLETIONFLUID
doi: 10.3969/j.issn.1001-5620.2017.04.016
复合加砂抗高温防衰退水泥浆体系
路飞飞1，李斐「，田娜娟2，朱文豪
Vol. 34 No. 4 July2017
（1.中国石化西北油田分公司石油工程技术研究院，乌鲁木齐830011；2.渤海钻探井下作业分公司，河北任丘062550）
路飞飞 LU Feifei.
powderUjDriing
摘要
143 超联装
资发计 2.08
改善了
关辨
中图分类号：
TE256
加球
文献标识码：A
泥浆体系[]钻井液与完井液，2017，34（4）：85-89
strength retrogression cement slurry with compounded silice
85-89
井固井间惠
开展了在
中量及硅粉复配对水泥石
135%硅将的水泥
书0.1
0.09 mm
密度者
恒抑制了水泥强度持续衰退，
；高密度水泥
1001-5620（2017）04-0085-05
文章编号：
High Temperature Anti Strength Retrogression Cement Slurry with Compounded Silica Powder
LU Feifei', LI Fei', TIAN Najuan’, ZHU Wenhao
(1.Research Institute of Petroleum Engineering, Sinopec Northwest Oil Field Company, Urumqi, Xinjiang 830011:
2.Downhole Services Compamy BHDC Renqiu Hebei 062550)
Abstract Conventional Class G cement with silica powder is not able to satisfy the need of extra high temperature well cementing because of serious retrogression of the high temperature strength of the set cement. The mechanisms of set cement (with 35% silica powder) strength retrogression at 145 180 °C, and the effect of particle sizes, concentrations and compounding of silica powder on the development of the strength of set cement at 170 200 °C have been studied to resolve strength retrogression of set cement at elevated temperatures. A high temperature anti strength retrogression cement slurry has been developed. These studies showed that(1) at temperatures above 160 °C, the strength of a set cement with 30% silica powder begins to decline after curing for 30 h, and the higher the temperature, the earlier the process of strength retrogression. (2) The ratio of 0.18 mm silica powder, 0.09 mm silica powder and liquid silica is determined to be 30 0 :10 based on the effect of coarse and fine particle silica powders on the development of the strength of set cement. When the compounded silica is added at a concentration of 70%, strength retrogression of set cement at 200 °C can be inhibited. (3) a high temperature high density anti strength retrogression anti-channeling cement slurry with compounded silica powder has been developed with density between 2.08 g/cm’ and 2.41 g/cm:, and it can be used at high temperatures such as 170-2o0 °C. Through these studies, the continual strength retrogression of set cement is inhibited, the long-term mechanical performance is improved, and the technology developed can be used in perfectly cementing HTHP gas wells.
Key werds Compounded silica powder addition; Anti strength retrogression; High temperature resistant; Dosage of silica powder; Particle size of silica powder; Liquid silica; High density cement slurry
油气勘探步入深井、超深井时代，高温固井必
将面临艰巨挑战。西北油田塔中北坡奥陶系中下统
基金项目：中石化科研项目“顺南高压气并安全钻井配套技术研究”（P14013）资助。
第一作者简介：路飞飞，工程师，硕士，1985年生，毕业于中国石油大学（华东）油气并工程专业，现在从事固井
技术研究工作。电话（0991）3161179/18160669925；E-mail：939197895@qq-com 万方数据