Blackjack Investments Ltd. invests in oilfield service and manufacturing companies. Currently has three portfolio companies b ... eing Westland Energy Services Ltd. (oilfield & construction rentals, waste management and trucking), Wrapex Industrial Services Ltd. (industrial insulation, scaffolding, self-frame buildings, pre-engineered buildings, soft-covered buildings) and Pioneer Professional Services Group Ltd. (environmental, land, safety and vegetation management. read more