Original oil and gas trade magazine vintage ad for WELEX INC. General offices were located at 1400 East Berry, Fort Worth, TX. Interpretation Chinese writing or chicken tracks? Oil well logs are difficult to decide if you have a well unless you are an expert. But you don't have to be with Welex log. This unique 1959 old petroleum oilfield drilling industry equipment magazine advertisement would display beautifully matted and framed. Great graphics. Welex Jet Services, Inc.