如何准确地测定岩屑中碳酸盐岩的含量

How to Preciously Detect Carbonate Rock Content in Cuttings

在现场录井过程中,准确地测定岩屑中的碳酸盐岩含量,有其较大的实际意义。根据方解石和白云石具有的不同化学性质,在碳酸盐岩分析仪的记录曲线上,利用“拐点”(break point)方法,能更准确地读出灰岩和白云岩在岩屑中的百分含量,为更好地应用该方面的资料解决实际问题,提供了可靠的保证。该文对如何利用“拐点”法确定灰岩和白云岩的含量进行了说明,同时对目前现场较为普遍应用的“1分钟、3分钟、10分钟”法提出了质疑。

Preciously determine carbonate rock content in cuttings has its significant real meaning during wellsite logging. Based on the principal that calcitite and dolomite have different chemical properties,it can more preciously read out the percentage content of limestone and dolomite in cuttings by break point method on the recording curves of the carbonate analyser. The paper describes how to use these data to solve practice problems,also gives out doubtable points that exist in the use of 'one minute,three and ten minutes' method on wellsite.