The team is investigating elements in the mineral calcium carbonate, which were deposited in the mud and soil in and around a lake between two and 1.7 million years ago.

该小组正在调查碳酸钙矿物中的元素，这些碳酸钙矿物沉积于距今2至170万年的湖内部及周边的淤泥和土壤中。

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So a set of identification technique for thin reservoir with high mud and calcium content is developed and applied in new Wells interpretation and old Wells re-examination and obtains a nice effect.

为此，开发出一套高泥、高钙、薄储层油层识别技术，应用于新井解释及老井复查，效果很好。

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Current drilling technology requests that polyanionic cellulose (PAC) has better properties to tolerate salt, calcium, high temperature, and enhance mud viscosity remarkably.

现在的石油钻井技术要求聚阴离子纤维素(简称PAC)具有更好的抗盐、抗钙、抗高温性能和明显的增粘作用。

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