AD-4微生物防蜡剂培育与应用

BREEDING AND APPLICATION OF MICROBE PARAFFIN INHIBITOR AD-4

吴慧敏 刘延坡 吴莉玲 胡斌 皮存学

开封市奥德科技有限公司, 河南开封 475004 河南油田公司采油一厂, 河南南阳 474780

介绍了微生物防蜡剂的培育、室内性能检测及现场防蜡试验过程。用现场油水样中菌种驯化的菌种和实验室菌种配伍、优化、筛选,培育成AD-4微生物防蜡剂。通过室内试验验证,AD-4微生物防蜡剂对现场蜡块的乳化降解作用使蜡块凝固点降低4~8.5℃,原油培养液表面张力降低率30.3%~49.3%,黏度降低35%~50%,原油流动性得到了很大的提高。经现场12口油井试验证明,应用AD-4微生物防蜡剂后,油井电流、负荷下降,示功图显示结蜡现象明显减轻,检泵周期延长,部分井检泵周期可延长到原来的2倍,投入产出比可达1:2.8。

Introduced breeding of microbe paraffin inhibitor, property examine in laboratory and in-situ experiment of paraffin inhibitor. microbe paraffin inhibitor AD-4 was a field usable microbe, which composed of microbes tame from field profit and capability, optimize, select from laboratory. Experiment indicate that AD-4 can decrease freezing point of wax to 4~8.5℃ by its emulsify and degradation capacity, decrease surface tension of crude oil cultivation liquid to 30.3%~49.3%,and decrease viscosity to 35%~50%,improved flow properties of crud oil. Applications in 12 wells showed that AD-4 depressed electric current and loading of well, prolonged pump inspection period to tow times in some wells, and ratio of input/output can reached to 1:28.

10.3969/j.issn.1000-7393.2005.02.013