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应用三甲基硅烷化(TMS)技术,对常温(93℃)和高温(160℃)下掺有NaCl的G级油井水泥浆固化过程中水化产物(SiO_4)~(4~-)四面体聚合态结构与抗压强度的关系进行了分析。结果表明,国产G级油井水泥在93℃和160℃下,当其在8h相对左右龄期具有较多的活性单体时,水泥石强度也相应较高,NaCl浓度为15％时,水泥石的8h龄期强度比NaCl浓度为0％和36％时的水泥石同龄期强度大。指出TMS技术,同样可以用活性单体含量的变化,对在其它应用条件下可能导致G级油井水泥性能变化的因素作出一定的解释。
The effects of hydration products (SiO 4) 4 (superscript 4 -) tetrahedron during the curing process of G grade oil well cement slurry doped with NaCl under normal temperature (93 ℃) and high temperature (160 ℃) were studied by using trimethylsilylation (TMS) The relationship between polymer structure and compressive strength was analyzed. The results show that the strength of cement stone is higher when domestic G grade oil well cement has more active monomers at 93 ℃ and 160 ℃ in 8 h relative left and right age. When the concentration of NaCl is 15% Of the 8h age strength than the NaCl concentration of 0% and 36% of cement at the same age strength. It is also pointed out that the TMS technique can also explain some of the factors that may cause changes in the performance of Class G oil well cement under the conditions of other applications.