A Low-Cost and Low-Density Cement Slurry System Suitable for a Shallow Unconsolidated Stratum

Table 8

Effect of different early strength agents.

Early strength agent	Density (g/cm^3)	Φ3	Φ6	Φ100	Φ200	Φ300	Φ600	24 h compressive strength (MPa)
Blank	1.5	10	16	83	124	156	231	11.02
SD-1	1.5	9	15	77	116	150	221	11.62
ACL	1.5	5	8	70	110	144	220	12.82
APS	1.5	10	15	76	115	147	224	12.15
CS-3	1.5	31	43	97	128	160	248	10.72
XN-1	1.5	17	22	83	115	139	217	10.1
CG-4	1.5	21	30	91	127	151	228	10.52