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Study on Polyacrylamide in Polymer Flooed Oilfield

Author: XuXiangYang
Tutor: LiYanFeng
School: Lanzhou University
Course: Polymer Chemistry and Physics
Keywords: Polymer flooding Polyacrylamide Core Adsorption
CLC: TE39
Type: Master's thesis
Year: 2011
Downloads: 38
Quote: 0
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Abstract


In this thesis for the study of core samples in the wells of Shengli Oilfield , the first time on the the polymer flooding actual samples adsorption , The polyacrylamide residual separation , measured explore three flooding polyacrylamide in the formation of the adsorption retention law . This thesis By comparison, the use of vacuum drying, the petroleum ether extraction 24h, shaker shock 48h method of adsorbed cores polyacrylamide separation . Starch - cadmium iodide method for the determination of the amount of adsorption results show that the three oil displacement polyacrylamide in the formation adsorption simulation data in the determination of the results of the literature , some sample adsorption and simulation test value closer , but the overall small . Its distribution in the formation , there is no obvious pattern . Using the viscosity method, and its molecular weight was measured, and found that the molecular weight decreases very serious, fundamental declined one to two orders of magnitude , indicating polymer degradation in the formation of very serious . The flocculent white precipitate was found in the portion of the sample which was subjected to extraction, determination . The results show that the white the flocculent precipitate formation polyacrylamide residue . The precipitation is polyacrylamide formed with the long-term role of the calcium and magnesium ions in the formation of precipitation . Polyacrylamide in the formation mainly exists in a solid precipitate forms . Also found that the precipitate formed in the formation of certain amount of polyacrylamide adsorption

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