About SIPES Houston The Houston Chapter is the largest local chapter of the SIPES National organization, which is based in Dallas. Part of the richness of SIPES is the networking and communication that propagates between the chapters in these oil communities. When you see the SIPES Certificate of Membership, you can always be sure that you are dealing with honest and reputable geoscience professionals. Please visit our national website for more details. What is Our Mission? To be the pre-eminent organization for furthering the professional and business interests of independent practitioners of the earth sciences. In achieving this vision, emphasis is placed on: 1- Professional Competence 2- Professional Business Ethics 3- Presenting a favorable, credible and effective image of the Society