摘要
ＤＳＳＡＳ是一种钻井液用的粉剂磺化石油沥青。较详细地叙述了ＤＳＳＡＳ的生产合成工艺，讨论了原料、生产工艺中各种参数及控制，还介绍了产品使用方法和现场应用实例。
SSAS is a powder sulphonated asphalt, which is different from the present national products with the same name and made from coal tar pitch, fuming sulphuric acid and sodium humate. Based on the factors of the chemical components, material structure, molecular weight,causes of geological formation and fined technology etc., the sulphonated asphalt specially selected was sulphonated to gasous sulphoric anhydride, then neutralized and dried to form DSSAS. During processing the technical parameters, such as material dehydrlysis, concentration adjustment, sulphonating temperature, ratio of feedstock, reaction degree, blending condition, heat transmission and so on, have been properly controlled, held quality testings to guaratee the product properties e. g. stabilizing hole wall, inhibiting the dispersion of cuttings, filtration control at high temperature and lubrication, anti-sticking and emusification as well.DSSAS is not a single-function additive, but a multi function, such as anti-sticking, lubrication, emulsification, filtration control, increasing mud redispersibility at high temperature etc.We reasonally adjust the adding volume to desired requirements. It is harmless to people or am mals. And there is also no pollution to environment. Through application of 3,000t to over 1,000 oil-gas wells in three oilfields, it had abtained obvious effects and good social and economical benefits. The specialists who assess it have thought that, the product had uniquely selected.material, scientific prescription, advanced gas-solid phase sulphonated technology and mid-fi nal control, and superior to the traditional products, It has not only held an lead in China, but also reached international level, and won the second-grade prize of science and technology of MGMR.
出处
《探矿工程》
1996年第5期37-38,共2页
Exploration Engineering(Drilling & Tunneling)
关键词
页岩
抑制剂
钻井液
泥浆调节剂
sulphonated petroleum tar gas-liquid sulphonating process drilling fluidwellbore and mud adjusting agent
