抗高温抗盐失水控制剂磺甲基酚醛树脂(SMP)作用机理的研究

本文提出磺甲基酚醛树脂(下称5MP)对泥浆的降失水作用，主要在于对泥饼质量的改善。测定了泥饼的渗透率K作为衡量泥饼质量的重要标志，研究了吸附量随温度、介质矿化度和PH值的变化以及吸附量与对应条件下泥浆失水造壁性的关系。着重研究了SMP与磺甲基褐煤(下称SMC)复配前后介质中NaCI含量对吸附量、泥浆中泥土的粒度分布、泥饼渗透性和失水的影响，发现它们之间存在着互相制约的关系。5MP抗高温抗盐的作用机理，一面面在于它本身具有较强的越稳寅性和水化熊力，另一方面在于它通过与SMC复配或与Cr³⁺等高价阳离子的络合作用，使之在高温和高矿化度条件下仍能有效地吸附在粘土表面，继续起着稳定的护胶作用。

INVESTIGATION ON THE MECHANISIM OF METHYL SULFONIC PHENOLRESIM CONTROL OVER FLUID LOSS

In this paper it has been proven that the fluid loss control of SMP primarily results from the improvement of mud-cake quality. The permeability K has been measured as an important factor of judging mud-cake quality.We have studied the changes oft heads or bed amount with temperature，salt content in the medium and PH value，as well as the relations between adsorbed amount and Water between loss of drilling fluid in the corresponding conditions. Particularly, the influence of the. NaCI content in the medium on the absorbed amount，the particle size distribution of clay in mud cake before and after SMP is mixed with SMC has been studied, hence a mutually relationship between these factors has been found.The mechanism of the anti-temperature and anti-salt properties of SMP lies in its quite strong thermal stability and hydrophilic power，as well as in its effective adsorption onto the surface of clay in the condition of high temperature and large salt content . when it is mixed with SMC or complexed with multivalent cations，such as Cr³⁺ thus, a stable protection for fine colloidal particles in such conditions is achieved