Application of Intercalative Gel-Particle Profile Control Technology in Hade Oilfield

doi:10.7657/XJPG20200215

Abstract

Abstract:

In order to improve the water flooding effect in high-temperature high-salinity reservoirs in the Hade oilfield, a research on the intercalative gel-particle profile control technology was performed. The performance evaluation and field application of the technology were carried out based on compatibility experiments, temperature resistance and salt tolerance tests and core flooding experiments. The results indicated that the intercalative gel particles, which could be uniformly dispersed in the solution and had a good compatibility with formation water. Under the condition of formation water in the Hade oilfield, the water absorption expansion rate became 5.00 times larger after the intercalative gel particles were aged for 30 days, indicating that the system had better performance in temperature resistance, salt tolerance and imbibition. In the process of injecting intercalative gel particles with different particle sizes into the cores with similar permeabilities, the maximum blocking rate reached 99.79%, indicating that the intercalative gel particles had good blocking performance. The intercalative gel particles were applied in the deep profile control in the Donghetang sandstone reservoir of Hade oilfield. By the end of October, 2018, the average daily oil production of the well groups with deep profile control increased from 104.07 t to 121.52 t, the water cut decreased from 83.95% to 74.40%, and the cumulative incremental oil production was 1.7×10 ⁴ t. Good development effects have been gained.

Key words: Hade oilfield, Paleozoic, Donghetang formation, high temperature and high salinity, intercalative gel particle, deep profile control, field application

CLC Number:

TE357.43

TAN Liangbo, CHANG Lunjie, CHEN Hong, YANG Zhizhao, HE Xianghui, LIU Yishi, LI Hongbo. Application of Intercalative Gel-Particle Profile Control Technology in Hade Oilfield[J]. Xinjiang Petroleum Geology, 2020, 41(2): 228-231.

Figures/Tables 6

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