Horizontal CSG Toe-to-Toe Intercepts

• →Horizontal coal-seam-gas well pairs require precise toe-to-toe intercepts.
• →Accumulated MWD survey error produces lateral shifts exceeding 10 m in some instances.
• →Undetected, these shifts cause missed intercepts and lost hydraulic communication.
• →Intercept requires the wellbores to physically intersect — not statistically achievable on MWD alone, so ranging must guide the approach.

Torped™ rotating-magnet ranging: magnets integrated into the directional rotary-steerable BHA, with the sensor run on wireline in the target well. A shift-vector methodology resolved true relative position at each station and steered every intercept. Delivered alongside major directional-drilling partners.