A New Composite Viscosity Reducer for Abnormal Low Temperature Extra-Heavy Oil Reservoir with High Acid Value.
Saved in:
| Title: | A New Composite Viscosity Reducer for Abnormal Low Temperature Extra-Heavy Oil Reservoir with High Acid Value. |
|---|---|
| Authors: | Hao Chen1,2 (AUTHOR) chenhao@cup.edu.cn, Shen, Xiong2 (AUTHOR), Yu, Jiayi3 (AUTHOR), Yang, Shenglai1 (AUTHOR) |
| Source: | Petroleum Chemistry. Sep2020, Vol. 60 Issue 9, p1003-1008. 6p. |
| Subjects: | Low temperatures, Viscosity, Petroleum reservoirs, Heavy oil, Oil changes, Rheology |
| Abstract: | M7 block of Santanghu oilfield is an abnormal low temperature tight oil reservoir. The effective development is very difficult. In this paper, we develop a new composite viscosity reducer called CSY-1. The synergistic effect of these agents provides the reducer with both dispersion and emulsification capacities. Based on orthogonal experiment and cost evaluation, the optimum formula of CSY-1 is 0.5% OP-10, 1.8% SDBS, 0.1% Tween 80, and 1% NaOH (or Na2CO3). The rheology property of heavy oil changed fundamentally before and after the addition of CSY-1. Oil-in-water emulsion with very low viscosity can be obtained and the viscosity reduction rate can be over 99%. Simulation results showed that the oil production of a single well can be increased from the current 3.74 t/d to 8.12 t/d with the application of this reducer. [ABSTRACT FROM AUTHOR] |
| Copyright of Petroleum Chemistry is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
|
Full text is not displayed to guests.
Login for full access.
|
|
| Abstract: | M7 block of Santanghu oilfield is an abnormal low temperature tight oil reservoir. The effective development is very difficult. In this paper, we develop a new composite viscosity reducer called CSY-1. The synergistic effect of these agents provides the reducer with both dispersion and emulsification capacities. Based on orthogonal experiment and cost evaluation, the optimum formula of CSY-1 is 0.5% OP-10, 1.8% SDBS, 0.1% Tween 80, and 1% NaOH (or Na2CO3). The rheology property of heavy oil changed fundamentally before and after the addition of CSY-1. Oil-in-water emulsion with very low viscosity can be obtained and the viscosity reduction rate can be over 99%. Simulation results showed that the oil production of a single well can be increased from the current 3.74 t/d to 8.12 t/d with the application of this reducer. [ABSTRACT FROM AUTHOR] |
|---|---|
| ISSN: | 09655441 |
| DOI: | 10.1134/S0965544120090054 |
