Based on the production data and statistical information of a practical oilfield, it is proved that the flow rule in wormhole or extra wormhole can be regarded as a high speed Non-Darcy flow, and used the Forchheimer equation to represent. The Forchheimer model is superior to the exponent model and Mazaheri model. Then, the productivity equation of poorly consolidated reservoir with wormhole is...

Currently, most profile control agents would be degraded in strong alkaline condition. They could not be applied in ASP (alkaline, surfactant and partially hydrolyzed polyacrylamide) flooding. To solve this problem, a new kind of alkali-resistant gel for deep profile has been studied. Based on the profile control mechanism of profile agent and the crosslinking mechanism of the polymer, the sele...

The remaining oil distribution and displacement mechanism of poly/surface dual flooding stage in medium high permeability reservoir are not clear. In this paper, the conditions Gangxi Area 3 Dagang Oilfield were taken as research object. Based on nuclear magnetic resonance large model physical simulation experiment, characterization micro macro residual start-up enhanced recovery experiment car...

In many practical flow situations solutions of flexible polymers are found to exhibit a well-known non-Newtonian viscosity enhancement effect. This is likely to be due to extensional components in the flow field, which can cause flexible polymer molecules to stretch and orientate, causing an increase in the extensional viscosity. This viscosity enhancement is important in many industrial applic...

One of the methods to achieve optimal conditions in increasing oil recovery through injecting polymers is by optimizing parameters that influence success provide information and be considered when determining new schemes for implementation future. Optimization obtain optimum value factor best PV, injection rate, time, pressure, adsorption, residual resistance (RRF), inaccessible pore volume (IP...

Polymer flooding is a chemical enhanced oil recovery method that improves the of by controlling mobility water to phase. It uses polymer solutions increase viscosity displacing thereby decreasing water/oil ratio (Speight, 2013). The volumetric and displacement sweep efficiencies are positively affected flooding. aqueous phase increased due molecular size structure used. main objective this rese...

For reservoir water flooding after polymer injection points existing in the mining process of high temperature resistant performance is poor and multistage unlock difficulty, examination, sealing problems such as in-depth study analysis, innovation to a new set return spit production technology, produce more suitable voltage can be found on variety well conditions column helpful for better impr...