Construction, Properties and Mechanism of Polymer/Organic Compound High Temperature Retarder for Oil and Gas Exploration and Development

Abstract

During the process of oil and gas exploration and development, cementing operation is the key factor to ensure oil well productivity release, and the performance of additives is directly related to the success or failure of cementing. In this study, the polymer retarder PID-1 was synthesized by aqueous solution polymerization, the chemical structure, thermal stability and micro-structure of PID-1 were studied by infrared spectroscopy, thermogravimetric analysis and scanning electron microscopy. Moreover, the retarding effect and mechanism of PID-1 was analyzed based on low field nuclear magnetic resonance analysis, adiabatic calorimetry and scanning electron microscopy. Then, the polymer/organic compound high temperature retarder PID-2 was constructed by adding organic compound PN with well retarding property, and then the retarding effect, thickening property, temperature and dosage sensitivity of PID-2 were investigated. Combined with porosity evolution, type and content of hydration products, the internal mechanism of retarder PID-2 on early mechanical strength development of cement slurry system was revealed.