Figure 1. Formation of techno-gene methane deposits in a coal layer: 1

Chapter

$Figure 1. Formation of techno-gene methane deposits in a coal layer: 1— the coal layer, 2—the well, 3—sealed space, 4—well punching, 5—the cavity, 6—the fracture, 7—the screen$

Chapter

ABSTRACT

Other performance variants of the proposed method are presented below. After opening of the coal layer with a well and after end of the works at the sealed spaces, there are punched encircled columns, and hydro-fracturing of the layer is done. The pressure of forcing the working fluid (water) into the layer, the volume and the pumping rate are defined using standard techniques. The pump units 4AH-700 are used.