氮气膨胀剂在固井防气窜中起着重要的作用。
Nitrogen swelling agent is vital for controlling gas channelling during cementing.
解决注水泥作业的防气窜问题，是提高固井质量，保护油气层的关键技术。
It is a key technique of raising cement job quality and protecting oil and gas reservoirs to solve the problem of gas channeling prevention in cementing job.
该仪器的结构、工作原理，以及水泥浆防气窜能力评价方法已申请国家专利。
The structure and working principle of the instrument as well as the method of evaluating anti-gas channeling ability of the slurry have been patented.
因此，优选有效的防气窜添加剂，研制性能良好的防窜水泥浆就显得十分重要。
Hence, it is very important for optional selection the additive preventing the gas flow effectively, and developing good cement slurry for preventing the gas flow.
通过对固井水泥浆凝固特性的研究，研制出了可模拟井下条件的室内“水泥浆防气窜能力评价仪”。
Based on the study of cement slurry setting property, a test instrument has been developed for in-house evaluating the anti-gas channeling ability of slurry under the simulated downhole conditions.
超细防气窜水泥浆体系具有防气窜、低密度、低失水、抗水泥石高温强度退化等优点，适用于超深油气井注水泥作业。
This cement slurry provides good properties such as low density, low filtration, gas channeling prevention and stable compressive strength at high temperature.
针对固井过程中的气窜问题，对纤维水泥浆的防窜性能进行了实验研究。
For the problem of gas channeling in cementing operations, the experiments of anti-channeling performance of fiber cement slurry were carried out.
摘要 ：针对注气井CO2气窜而造成生产井气油比上升，常规管式泵游动阀打不开而导致的“气锁”问题，研制了CO2驱中空强制拉杆式防气泵。
Abstract : To address the issue of "gas lock" caused by CO2 gas-channeling in gas injection wells, the forced pull rod type hollow gas prevention pump for CO2 flooding has been developed.
摘要 ：针对注气井CO2气窜而造成生产井气油比上升，常规管式泵游动阀打不开而导致的“气锁”问题，研制了CO2驱中空强制拉杆式防气泵。
Abstract : To address the issue of "gas lock" caused by CO2 gas-channeling in gas injection wells, the forced pull rod type hollow gas prevention pump for CO2 flooding has been developed.
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