Compatibility Evaluation for Glutenite Oil Reservoir in Karamay

Abstract

In this paper, a systemic and experimental research is performed on the compatibility for glutenite oil reservoir in Karamay. The velocity sensitivity is not strong in microscopic scale and not weak in macroscopic scale; strong stress sensitivity; medium water sensitivity; varied compatibilities of injected water with stratum in different blocks. Causes: badly sorted source and small pore throat; high content of varied clay minerals. Authigene sodium montmorillonite comes in large quantity and varied occurrences, water swelling and easily dispersed. The kaolinite is easy to swell, be dispersed and transferred. As the research shows, it is very important to keep the solid particle diameter shall be limited within 2μm in the injected water, maintain a high degree of mineralization of the injected water, recycle the waste water as much as possible, control the production pressure for effective development of glutenite oil reservoir in Karamay. The difference of compatibility in macroscopic scale results from the fact that Block E has high permeability but large throat radius while Block W1 and Block W2 have low permeability but small throat radius..