【摘要】 岔15-332X井是为了解冀中凹陷岔河集油田岔15断块长期注水后的油层情况而设计的一口密闭取心井。密闭取心对钻井液的滤失性、防塌性、携砂性和防卡性提出了更高的要求。本文介绍了岔15-332X井各井段的钻井液配方及其维护处理措施,以及密闭取心段的钻井液工艺。现场应用表明,该井所用的钻井液配方及维护措施是合适的,它满足了密闭取心的要求。更多还原

【Abstract】 Sealing core drilling is commonly used to understand the reservoir conditions after long term of injection. Suitable drilling fluid used is very important to the success of sealing core drilling . Drilling fluid formulation and field maintenance for different hole sections in Chal5-332X are described. It proved that the drilling fluid used possesses the advantages of low fluid loss, good cutting transportation and anti-slough-ing property, coring in the well was a success.更多还原