Abstract:

In order to improve reservoir exploitation degree and recovery of heavy oil loop in the Gudao oilfield, the exploitation project was adjusted according to optimizing well planning with data of horizontal well and vertical well, and the place in oil layer, length, stretch orientation and injection-production parameters were studied systematically by numerical simulation.With the implementation of this program, good results were gained, for example, the product of single well was about 57.4t/d, which was 4 times as much that of around vertical wells; and water cut  stays about 20% , which was 15%-30% less than that of vertical well. Therefore, this technology was important for tapping potential and improving recovery with horizontal well.

Key words: heavy oil loop, horizontal well, cyclic steam stimulation, development adjustment, Gudao oilfield