Researches of the Hydraulic Jet Techique for Drilling Radial Horizontal Wells and its Performances

Abstract：The principle and the key points of the spining jets with hydraulic jet for drilling radial horizontal wells have been stated.The technique have been used for breaking rocks and ground full?scale simulating horizotal drillings in laboratory tests as well as for breaking rocks in the field test.The results have shown that the capacity of the spining jet for breaking rocks can entirely meat the demands of the radial horizontal wells.The feasibility of the technique has been indicated by the successful field tests.

Keyword：horizontal wells;drillings;jet;breaking rocks;