sec.30Additional downhole survey required for relevant horizontal well or petroleum well or bore intersecting coal seam

sec.30 Additional downhole survey required for relevant horizontal well or petroleum well or bore intersecting coal seam

This section applies in relation to— a petroleum well that is a relevant horizontal well; or a petroleum well, or bore, that intersects a coal seam more than 1m in thickness. The holder of the petroleum tenure under which the well or bore is drilled must ensure a downhole survey of the well or bore is carried out— as soon as practicable after drilling of the well or bore starts; but not later than 3 months after the rig release day for the well or bore. For a relevant horizontal well, the downhole survey must achieve a level of accuracy that is within— for inclination, plus or minus 0.5º; and for azimuth— plus or minus 1.0º; or for each 1,000m of the drilled hole—plus or minus 6m vertically and plus or minus 20m laterally. However, if the relevant horizontal well intersects another well that is not a relevant horizontal well, the level of accuracy achieved by the downhole survey of the relevant horizontal well must be at least as good as the level of accuracy achieved by a downhole survey required to be carried out of the other well. For a well (other than a relevant horizontal well) or bore that intersects a coal seam more than 1m in thickness, the downhole survey must achieve a level of accuracy that is within— for inclination, plus or minus 0.5º; and for azimuth— for a well or bore drilled with an inclination of less than 6.0º (taking into account the tolerance of plus or minus 0.5º mentioned in paragraph (a) )— plus or minus 2.0º; or for each 1,000m of the drilled hole—plus or minus 6m vertically and plus or minus 40m laterally; or otherwise— plus or minus 1.0º; or for each 1,000m of the drilled hole—plus or minus 6m vertically and plus or minus 20m laterally. In this section— rig release day , for a petroleum well or bore, means the day, after the holder of the petroleum tenure decides no further drilling of the well or bore will occur, that the drilling rig is moved so it is no longer above the well or bore. s 30 amd 2022 SL No. 191 s 8 (sec.30-ssec.1) This section applies in relation to— a petroleum well that is a relevant horizontal well; or a petroleum well, or bore, that intersects a coal seam more than 1m in thickness. (sec.30-ssec.2) The holder of the petroleum tenure under which the well or bore is drilled must ensure a downhole survey of the well or bore is carried out— as soon as practicable after drilling of the well or bore starts; but not later than 3 months after the rig release day for the well or bore. (sec.30-ssec.3) For a relevant horizontal well, the downhole survey must achieve a level of accuracy that is within— for inclination, plus or minus 0.5º; and for azimuth— plus or minus 1.0º; or for each 1,000m of the drilled hole—plus or minus 6m vertically and plus or minus 20m laterally. (sec.30-ssec.4) However, if the relevant horizontal well intersects another well that is not a relevant horizontal well, the level of accuracy achieved by the downhole survey of the relevant horizontal well must be at least as good as the level of accuracy achieved by a downhole survey required to be carried out of the other well. (sec.30-ssec.5) For a well (other than a relevant horizontal well) or bore that intersects a coal seam more than 1m in thickness, the downhole survey must achieve a level of accuracy that is within— for inclination, plus or minus 0.5º; and for azimuth— for a well or bore drilled with an inclination of less than 6.0º (taking into account the tolerance of plus or minus 0.5º mentioned in paragraph (a) )— plus or minus 2.0º; or for each 1,000m of the drilled hole—plus or minus 6m vertically and plus or minus 40m laterally; or otherwise— plus or minus 1.0º; or for each 1,000m of the drilled hole—plus or minus 6m vertically and plus or minus 20m laterally. (sec.30-ssec.6) In this section— rig release day , for a petroleum well or bore, means the day, after the holder of the petroleum tenure decides no further drilling of the well or bore will occur, that the drilling rig is moved so it is no longer above the well or bore.