Dillco Inc. is a Texas based corporation with offices in Houston and Dallas, Texas.
Since it inception in 1974, it has been a company with its principal business in the oil and gas business.  Started as an equipment company, it soon became a service company with firms in contract drilling, oil and gas production and investment banking.
The firm had early success and led the industry in large diameter drilling by drilling single pass three to fifteen foot drill shafts for mining and commercial work in addition to major government projects.  The firm currently is the parent company of The Dillard Group Ltd., an investment banking company in Houston, and holds various separate investment positions.  The firm has been active in start up positions for strong management.
The company does consulting and engineering management for law and industry through its Houston office.
The company also deals in oilfield equipment and currently has a Hydraulic rig for sale.
The founder of the company Max M. Dillard shares ownership with his Wife and three Adult Daughters, making the firm a woman owned corporation (WBE).