39. Believes that concerns over the potential of shale gas development to damage water supplies through leakage from wells can be addressed through the adoption of best practices in well development and construction, especially casing, cementing, and pressure management, together with pressure testing of cemented casing and state-of-the-art cement bond logs to confirm formation isolation; invites the Member States to ensure that these practices are followed in shale gas development, inter alia by means of site inspections;

42. Believes that concerns over the potential of shale gas development to damage water supplies through leakage from wells can be addressed through the adoption of best practices in well development and construction, especially casing, cementing, and pressure management, together with pressure testing of cemented casing and state-of-the-art cement bond logs to confirm formation isolation; invites the Member States to ensure that these practices are followed in shale gas development, inter alia by means of site inspections;

35. Stresses that effective prevention requires consistent monitoring of strict adherence to the highest standards and practices in well-bore construction and maintenance; considers that well completion reports should be submitted by operators to the competent authorities; underlines that both industry and competent authorities should ensure, at all stages, regular quality control for casing and cement integrity, as well as baseline groundwater sampling to control the quality of drinking water, conducted in close cooperation with drinking water providers; points out that this requires significant human resources and technical expertis ...[+++]e on all levels;

35. Stresses that effective prevention requires consistent monitoring of strict adherence to the highest standards and practices in well-bore construction and maintenance; considers that well completion reports should be submitted by operators to the competent authorities; underlines that both industry and competent authorities should ensure, at all stages, regular quality control for casing and cement integrity, as well as baseline groundwater sampling to control the quality of drinking water, conducted in close cooperation with drinking water providers; points out that this requires significant human resources and technical expertis ...[+++]e on all levels;

Includes the following services rendered on a fee or contract basis: advisory and consulting services relating to mining, on-land site preparation, on-land rig installation, drilling, drilling bits services, casing and tubular services, mud engineering and supply, solids control, fishing and downhole special operations, wellsite geology and drilling control, core taking, well testing, wireline services, supply and operation of completion fluids (brines) supply and installation of completion devices, cementing (pressure pumping), stimulation services (fracturing, acidising and pressure pumping), workover and well repair services and plugg ...[+++]ing and abandoning of wells.

2.10.3.2.c.Services incidental to mining, and oil and gas extraction include mining services provided at oil and gas fields, including drilling, derrick building, repair and dismantling services, and oil and gas well casing cementing. Services incidental to mineral prospecting and exploration, as well as mining engineering and geological surveying, are also included here.