新型低密度水泥浆体系在大庆油田深层气井中的应用          下载免费PDF全文

赵常伟 《探矿工程》2016,43(8):15-18

针对常规漂珠的批量生产限制、承压能力差,非漂珠低密度水泥浆体系密度可控范围窄、低温强度低等问题,进行了新型深井高强低密度水泥浆体系的研究。选用新型高承压人造空心微珠作为主减轻剂,以颗粒的合理级配及紧密堆积为理论基础,通过水泥石抗压强度、水泥浆沉降稳定性等试验优选了 DC-1、DC-2外掺料,并确定最优配比。复配外加剂体系后,研制出密度为1.30～1.40 g/cm3的低密度水泥浆体系,具有密度低、强度高、稳定好等特点。该体系泥浆在大庆油According to the problems of conventional floating bead about mass production limit, poor resistance to pressure and non floating bead about narrow controllable range and low temperature strength, the study was made on high compressive strength and low density cement slurry system for new deep well. New high pressure artificial cenospheres were selected as density reducer, on the theoretical basis of reasonable gradation of particles and dense packing and by the cement compressing strength and cement slurry sedimentation stability tests, DC-1 and DC-2 additives were optimized and the optimal proportion was determined. With the additive system completion, new cement slurry system of 1.30～1.40g/cm3 was developed with the characteristics of low density, high compressive strength and good sedimentary stability, this slurry system was applied in Zhaoshen well 19 in Xujiaweizi block of Daqing oilfield. The good application effects show its good popularization and application prospect.田徐家围子区块肇深19井成功应用,取得较好的效果,具有良好的推广应用前景。  相似文献