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

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.