吐哈低渗透油田钻井过程中的储层保护

Reservoir protection in the process of drilling of Tuha low permeability oil field.

针对低渗透油田储层特征，开展了钻井过程中以屏蔽暂堵技术为主的综合配套储层保护技术的研究与应用。目的防止或减少钻井过程中储层的损害，有效地保护储层，提高油气井的单井产能。结果该技术在丘陵、巴喀油田应用后，使储层表皮系数明显下降，流动效率明显提高。结论以屏蔽暂堵技术为主的储层保护技术，适合吐哈油区丘陵、巴喀油田的储层保护要求，并取得了显著的经济效益和社会效益。

Method In view of the reservoir characteristics of low permeability oil field, integrated and relevant reservoir protection techniques mainly concentrated in screening and plugging in the process of drilling was studied and applied.PurposeTo prevent and /or minimize the possible formation damage caused by drilling in order to improve the productivity of single well.ResultThe application of this technique to Qiuling and Baka oil fields demonstrated that the reservoir skin factor decreases dramatically and the flowing efficiency increases significantly.ConclusionThe reservoir protection technique mainly concentrated in screening and plugging is suitable for Qiuling and Baka oil fields in Tuha oil province. Benefit is obtained both economically and socially.