Study And Applications Of Yong3Block3D Develop’s Cementing Technique

Yong3Block locate at midland of Yong’an Oilfield, Yong3North Fault at its north direct, the southwest is water connected, the east is Yong2Fault.it’s a multioild, middle or higher permeability, Thin oil and Complex oilfield.Yong3Block is a old-, complex and multi-type oilfield. Along with constant development and long-time inject,it lost the balance of inject and develop,the pressure system of the original formation has been desdroyed,this lead to there are several presur-systems in a hole,the oil、gas and the water are active,the fluid channel to other formations is very seriously,when cement construction,the hole always occur lost、 channel,ect.in this block,there are many los、high-pressure and long cementing sect,all this factors infect the quality of cementing.By through optimize the sllury system、improve the cementing technical、use high efficiency oil-drive preflush and other measures,we improved the cementing quality of this block.