Any labor performed, or materials, machinery, tools, equipment or supplies so furnished or hauled by any person entitled to a lien under the provisions of the Oil and Gas Lien Act for the land, oil and gas permit, leasehold, lease for oil and gas purposes, or oil pipeline, gas pipeline or gasoline pipeline, shall be considered as having been furnished under a single contract regardless of whether or not the same was performed or furnished at different times or on separate orders, provided no more than one hundred twenty days shall have elapsed between the date of performance of the labor or the date of the furnishing or hauling of any part or parts of the material, tools, equipment, machinery or supplies and the date on which labor or materials, tools, equipment, machinery or supplies are next performed, hauled or finished [furnished].