利用水平井进行碳酸盐岩油藏的随钻动态研究与应用

Dynamic Study on Carbonate Reservoirs While Drilling by Using Horizontal Well and Its Application

以塔里木油田英买力潜山油藏为研究对象,开展碳酸盐岩岩性油藏水平井动态可行性研究及实践。介绍了所研究水平井的技术要求、主要技术手段及建立油藏应考虑的问题。结果表明在油田开发中,利用水平井钻井技术进行低孔低渗裂缝-孔洞型碳酸盐岩油藏开发潜力大,尤其在调整井、老井侧钻和滚动开发井的部署中均起着关键性作用,可以实现少井高产、油田高速高效开发,较大幅度增加泄油面积、提高单井产量、增加可采储量、提高油藏采收率。

Buried hill reservoirs in Yinmaili Wellblock of Tarim Oilfield were used as an object of study to carry out a feasibility study on carbonate lithologic reservoirs produced by using horizontal wells.The technical requirements of horizontal wells used and principal techniques in the study were introduced,reservoir simulation was discussed.The result shows that in oilfield development,there exists a great potential of the development of fracture-vug reservoirs with low porosity and low permeability by using horizontal wells,it plays a key role in oilfield development,especially in adjustment wells,sidetracking in old wells and rolling development.It can be used to raise the production output by using less wells with rapid and effective development of oilfields,enlarge drainage area,raise single well production,increase recoverable reserves and improve oil recovery.