摘要
用FCP-2000泥饼针入度仪对吐哈油田常用聚合物泥浆和聚磺泥浆体系中影响泥饼质量的因素进行了系统研究.结果表明体系中固相颗粒的含量及其粒度分布对泥饼强度的影响最大.虽然作用机理不同,但起抑制和封堵作用的处理剂都能提高泥饼强度,而尤以含有钾铵基聚合物的泥浆的泥饼强度最大.实验中还发现一具有规律的异常现象,即压力增加时,泥饼致密层变厚,但其强度却降低.现场泥浆检测标明,钾铵基聚磺泥浆具有最好的泥饼强度,最高可达400g以上.对水基钻井液体系而言,一般泥饼强度为200g左右即能满足工程要求.
The strength of drilling fluid filter cake is one of the main parameters by which the
quanlity of mud cake is evaluated.The factors influencing the quanlity of the filter cakes of the
polymer mud and sulfonated polymer mud commonly used in Tuha Oil Field are studied with
model FCP-200 filter cake penetrometer.The Experimental result shows that the contents of
solid particles in the drilling fluids and their grain size distributions have a major influence on
the quanlity of mud cake.It is shown that all drilling fluid additives which have inhibiting or
sealing effect can increase the strength of mud cake although they have different effect
mechanism,the strength of the filter cake of sulfonated ammonium potassium polymer mud is
greatest,sometimes it can be more than 400g according to field tests in 17 wells.The mud cake
strength of 200g can generally meet the requirements of drilling engineering.It is also observed
in the experiments that the thickness of mud cake increases but its strength decrease with the
increase of pressure.
出处
《西安石油学院学报(自然科学版)》
1999年第4期22-25,共4页
Journal of Xi'an Petroleum Institute(Natural Science Edition)
关键词
钻井液
泥饼
强度
钻井泥浆
吐哈油田
drilling fluid,mud cake,strength,layered
structure,quanlity,evaluation experiment