但普通油井水泥由于其性能特点，影响了堵水经济效益的进一步提高。
But the performance characteristics of common cement have influence on the further improving economic benefit of oil well water shutoff.
一种粒径比普通水泥小的特种油井水泥是小颗粒水泥。
Small particle size cement is a special oil-well cement which is smaller than conventional API cement in size.
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