“3 Well Cementation
3.1 Cementing purpose
3.2 Critical events in cementing history
3.3 Cementing technology progress at home and abroad
3.4 Cementing technology
3.5 Cementing Quality Evaluation”
3 Well Cementation
3.1 Cementing purpose
3.2 Critical events in cementing history
3.3 Cementing technology progress at home and abroad