Foam Multi-component Adsorption And Determination

Because of store layers of rock mineral with negative electricity generally, which can lead ion polymer and surfactant to absorb and loss in a large amount. One the one hand extensively adsorption help reduce the permeability of oil reservoir rock, and play a positive role on improving displacement efficiency, on the other hand adsorption on rock surface reduce concentration of solvent, and reduce the viscosity of the solution, and reduce the control ability to mobility. It is obvious that the research of adsorption to polymer and surfactant on rock surface will help solve this pair of contradictions. This adsorption and loss of solvent in foam compound system are researched in the dissertation.The research work is mainly divided into three parts, firstly static adsorption behavior of foam compound system are studied on oil sand and net sand surface of Zhongyuan oil field respectively, the concentration of KYPAM, XC, AOS are tested with starch-iodide colorimetry, the law of resonance ray dispersion and the law of derivative spectrum respectively. The influence of the temperature, concentration, different electrolytes and electrolyte concentration on the adsorption have investigated, 22 curves of adsorption are done and the adsorption behavior are analyzed, which is the foundation the next step of comparing with the adsorption of foam compound system. The result have proved that the adsorption curves of KYPAM submit to L isotherm, the adsorption curves of XC submit to S isotherm. Secondly the method of simultaneous testing the concentration of solvents in compound system and the law of adsorption are studied. In this dissertation author attempt to open up one new route, adsorption and test the concentration of solvent in compound system simultaneity and rapidly. The least square method(WLSA) based on derivative spectrum has been proposed, the adsorption of solvents in compound system on sand has been studied, 11 curves of adsorption are done and the influences of rock wettability on adsorption of solvents has considered. Thirdly the loss of solvents in core and influence on rock wettability are studied. In dynamic experiment of solvents loss, simulated core are used, dynamic saturation loss of solvents are tested by material balanced principle, and different temperature, mineralization of water and oiliness are considered. The change of cock wettability after absorbing solvents in the system is appraised by Amott index.By the research of the dissertation, derivative spectrum law is combined to the method of WLSA, the author put forward WLSA-UV method based on derivative...