Since the first commercial sale of Coalbed Methane (CBM), the process of drilling and producing methane with multilateral horizontal wells has been a "win-win" plan for the entire coal industry in North America. It creates a revenue stream by exploiting a valuable resource while de-gassing coal and lowering safety risks ahead of mining operations. Modern CBM wells are usually drilled up dip, in a tri-lateral "Turkey Track" pattern. Each lateral extends approximately 4000’ beyond the horizontal build section.

Normal mining operations allow approximately ten years of production to produce and deplete the adsorbed gas contained in the coal. Recent increased energy demands with favorable market increases have accelerated the mining schedules and shortened the available gas production time. These factors have lead to hazardous conditions encountered when mining through the yet depleted lateral well bores where dangerous volumes of trapped methane can inundate the occupied mine work area. Currently, mine operators are forced to use water infusion and in-mine drilling and grouting operations to safely intersect the horizontal well bores. This results in costly mine production delays.

The best solution requires a stable medium that can be positively placed through the extent of the well laterals and effectively displace and fill void spaces where methane gas can accumulate. This paper will explore and evaluate the results of applying variety of products, equipment, and techniques solve this quandary.

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