磁性粘弹体的密封抗压试验研究

TESTING AND STUDYING ON SEALING AND COMPRESSIVE PERFORMANCE OF MAGNETIC VISCOELASTIC BODY

研究了磁性粘弹体的配方和它在磁场作用下的密封抗压强度，提供了一种可用于磁密封的配方；研究了密封抗压强度与粘弹体中的磁粉含量、所加磁场强度、磁场分布形式之间的关系，得出了磁粉最佳比例。该粘弹体配方具有耐酸碱、不溶于油和水、温度稳定性好等特点，运用于油水井磁封隔及其它工业流封隔。

A study was made on the formula of magnetic viscoelastic body and its seal and compressive strength under magnetic field. The relations were studied among seal and compressive strength, magnetic powder content, strength and distribution form of magnetic field. A new formula was presented to be used for magnetic sealing. It has advantages of acid -resistance, alkali-resistance, insolubility with oil and water and good thermal stability etc., and is suitable for magnetic seal in water/oil wells or other professions.