dcs指数在深层气井储集层物性评价中的应用

深层天然气井储集层的物性评价，主要根据气测、钻时、岩心实物观察孔洞裂隙是否发育、致密坚硬程度以及测井岩石密度曲线等资料来进行，都存在影响因素和局限性。为了丰富储集层物性评价手段，提出了应用综合录井dcs指数评价储集层物性的方法。通过多口井的统计分析，建立了dcs指数与孔隙度和岩石密度的关系式．编制了相关解释评价标准及软件，给出了dcs与全烃解释图板。该方法在松辽盆地深层天然气井储集层评价中取得了比较理想的效果，通过典型实例验证了该方法的可行性。试气结果表明．这是一种实用、有效的储集层物性评价方法，切实提高了深层气井储集层解释判准率。

Application of dcs exponent used in the reservoir physical property evaluation in deep gas well

The reservoir physical property evaluation in the deep gas well was mainly relying on observing whether the pore fracture developed or not and how the compact and hardness of the rock expressed according to gas logging, drilling time, the core sample and well line logging rock density curve, and this kind of evaluation presented the influencing factors and limitations. In order to enrich the reservoir physical evaluating means, the authors provided a reservoir physical property evaluating method by using comprehensive mud logging dcs index. Through the statistics and analysis of many wells, the relationship formula between dcs index and porosity and rock density was established, the related interpretation and evaluation standard and software were put forward, and the interpretation chart between dcs and total hydrocarbon was given out. The method got an ideal effect while it was used in the evaluation of the deep gas well reservoir in Songliao Basin , and the feasibility of the method was verified by typical examples. It was proved by gas testing result that this was a functional and effective reservoir physical property evaluation method, thus really increasing the interpretation accuracy of the deep gas well reservoir.