Accurate “Point to Point” Target Butting of Two Horizontal Wells

Abstract:

Since the Rotary magnetic ranging system (RMRS) of America Vector Co. is introduced in CBM horizontal butted wells field, major breakthrough was made in the construction technology of directional butted wells both in CBM and solution mining industries in China. However, most application is still limited in U-shaped well group composed of a vertical well and a horizontal well. In a project of Huajin coking coal Co., DS well group is a coal-bed methane well group composed of 2 horizontal wells, by the target guidance system “Huici” which is made in China, “point to point” is realized. The paper introduced the technical methods of accurate “point to point” target construction.

Key words:directional butted wells; point to point; “Huici” target guidance system; CBM well