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油井防砂工艺技术的研究与发展对疏松砂岩油藏的正常开采至关重要。焦化防砂是通过向地层内注入热空气使原油在高温下发生氧化裂解生成焦炭从而将地层砂固结的一种防砂新技术。为了对该项技术进行全面系统的理论分析与评价，设计并制作了一套焦化防砂实验装置，利用该装置进行了焦化防砂室内实验研究。焦化效果以岩样的抗压强度进行评价，实验结果表明，影响焦化后岩样抗压强度的主要因素为空气最高温度、处理时间和空气流量。此外，对焦化处理后的岩样所作的岩样组成分析揭示出，稠油胶结机理为氧化作用使部分油分和胶质变成沥青质，沥青质受到高度的缩合作用而成为高分子量的甲苯不溶物。由于新生胶质的氧化比原生胶质的氧化困难得多，因此适合焦化防砂的油层，其原油必须含有一定量的原生胶质和沥青质。
The research and development of oil well sand control technology is very important for the normal mining of unconsolidated sandstone reservoir. Coking sand control is through the injection of hot air into the formation of crude oil at high temperatures under oxidative cracking generated coke formation sand will be consolidated by a new sand control technology. In order to conduct a comprehensive and systematic theoretical analysis and evaluation of this technology, a set of coking sand control experimental device was designed and manufactured. The experiment of coking sand control chamber was conducted with this device. The coking effect is evaluated by compressive strength of rock samples. The experimental results show that the main factors affecting the compressive strength of rock samples after coking are the maximum air temperature, the processing time and the air flow rate. In addition, the composition analysis of the rock sample after the coking process revealed that the heavy oil cementation mechanism is the oxidation of some oil and glial become asphaltene, asphaltene by a high degree of condensation into a high molecular weight toluene insoluble Things. As the nascent glial is much more oxidative than the native glial, it is suitable for coking sand control. The crude oil must contain a certain amount of native glial and asphaltene.