| Stepped horizontal wells is a special horizontal wells developing on the basis of the conventional horizontal wells, that is, its horizon section has a number of ascend and decrease in vertical profile and crossing several different depths of the reservoir, is also can at horizontal plane of the same depth the several different directions crossing the reservoir. Through reservoir of the crossing repeatedly, increased exposure reservoir area, a substantial increase production of single well, the reserves increased level of control. By optimizing the stepped horizontal wells body structure and profile design, stepped horizontal wells drilling technology of complementary measures, it is drilling trajectory for control of technical studies, the hole optimization of the track design, form a complete set of horizontal well drilling technology ladder Technology. The technology for the stepped horizontal wells of drilling wells designed more scientific, rational and improving the speed of horizontal well drilling, raising the horizontal well of economic efficiency, reducing the occurrence of accidents and the cost of drilling, while providing for the construction of drilling a strong theoretical and technical guarantee for the improvement of the Daqing Oilfield development of multi-layer thin reservoir effect is important. |
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