Method for evaluating shale hydration inhibition capability of water-based drilling fluid
The invention provides a method for evaluating shale hydration inhibition capability of water-based drilling fluid, and belongs to the field of shale gas development. The method comprises the following steps: providing a dry shale sample, and testing the lattice interlayer spacing d001 of the dry sh...
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| creator | LUO ZENG LI WENZHE ZHANG RONGZHI HE FEI XIA LIANBIN MA JINGLUN SU QIANG YANG HUAJIAN LIU YUAN HU XIHUI WANG RUI WANG XIAOJIAO ZHOU BAINIAN |
| description | The invention provides a method for evaluating shale hydration inhibition capability of water-based drilling fluid, and belongs to the field of shale gas development. The method comprises the following steps: providing a dry shale sample, and testing the lattice interlayer spacing d001 of the dry shale sample; adding quantitative dried shale samples and to-be-evaluated water-based drilling fluid into a reaction flask, stirring at a set temperature, and carrying out centrifugal treatment; collecting hydrated precipitates of the shale sample, and testing the lattice interlayer spacing d001 of the hydrated precipitates; obtaining the difference value [delta]d001 and comparing the difference value with an evaluation standard, and judging the strength of the shale hydration inhibition capacity of the to-be-evaluated water-based drilling fluid; the evaluation standard being as follows: 0.22 > = [delta]d001 > 0, and the shale hydration inhibition capability being strong; 0.5 > = [delta]d001 > 0.22, and the shale hyd |
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| subjects | INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING PHYSICS TESTING |
| title | Method for evaluating shale hydration inhibition capability of water-based drilling fluid |
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