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Study on Properties of Anti-Gas Channeling Lightweight Temperature-Resistant Latex Slurry 被引量:1
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作者 C. Ma H.L. Zhou +1 位作者 L. Zhao D.L. Zhou 《Journal of Energy and Power Engineering》 2010年第2期20-27,共8页
There is low formation pressure coefficient and high formation temperature in ludong-wucaiwan area. Gas cut and gas channeling happen seriously during oil and gas well cementing. The existing anti-migration additive h... There is low formation pressure coefficient and high formation temperature in ludong-wucaiwan area. Gas cut and gas channeling happen seriously during oil and gas well cementing. The existing anti-migration additive has only effects on single trait, so it is difficult to meet cementing requirement. According to this situation we could use latex slurry to anti-gas channeling. We have synthesised a set of anti-gas channeling lightweight temperature-resistant latex slurry and formed a new channeling preventing latex slurry through plenty of previous laboratory experiments. Finally the performance of latex slurry on temperature-resistant, anti-gas channeling and the anti-gas channeling of cement paste are studied. The experimental results show that this latex system has strong temperature-resistant and anti-gas channeling, which completely meet the requirement of cementing in this area. 展开更多
关键词 Latex slurry anti-gas channeling temperature-resistant thickening time compression strength sedimentation stability.
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Analysis of the Weight Loss of High Temperature Cement Slurry 被引量:1
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作者 Kunhong Lv Zhiqiang Huang +1 位作者 Xingjie Ling Xueqin Xia 《Fluid Dynamics & Materials Processing》 EI 2022年第5期1307-1318,共12页
The weight loss of cement slurry is the main cause of early annular air channeling and accurate experimental evaluation of the law of loss change is the key to achieve compression stability and prevent this undesired ... The weight loss of cement slurry is the main cause of early annular air channeling and accurate experimental evaluation of the law of loss change is the key to achieve compression stability and prevent this undesired phenomenon.Typically,tests on the pressure loss of cement slurry are carried out for temperature smaller than 120°C,and this condition cannot simulate effectively the situation occurring in high temperature wells.For this reason,in this study a series of experimental tests have been conducted considering a larger range of temperatures,different retarders and fluid loss additives.The results show that with an increase in the temperature,the weight loss curve of cement slurry changes from a“two-stage”to a“three-stage”behavior,and the risk of channeling increases accordingly.On increasing the amount of retarder and fluid loss additive,the transition time of cement slurry displays a non-monotonic behavior(it decreases first and then increases).It is found that the optimized retarder and fluid loss additive dosage are 0.2%and 2.5%,respectively. 展开更多
关键词 CEMENTING weight loss test weight loss law cement slurry EVALUATION anti-gas channeling
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