Analysis of composition and mechanism of Blockages in Typical Low Efficiency Wells in Bohai Oilfield
There are more and more inefficient wells in Bohai Oilfield,which seriously affects production and development efficiency.It is necessary to solve the problem of typical inefficient well blockage in offshore oilfields.By analyzing the composition of scale samples taken from typical inefficient wells in Bohai Oilfield and combining with the development characteristics of target wells,this study reveals the blockage mechanisms of different types of inefficient wells.Research Has shown that the scale samples in water injection wells are mainly inorganic scale composed of SiO2 particles,and the incompatibility between injected water and formation is its blockage mechanism.Polymer injection wells are blockages formed by encapsulating inorganic particles in polymer flocculation systems.Understanding the composition of scale samples and revealing the blockage mechanism can provide support for improving measures for inefficient wells in offshore oil fields.
NETL
NSTL
万方数据
维普
