E3S Web Conf.
Volume 252, 20212021 International Conference on Power Grid System and Green Energy (PGSGE 2021)
|Number of page(s)||6|
|Section||Research and Development of Electrical Equipment and Energy Nuclear Power Devices|
|Published online||23 April 2021|
Research and application of multifunctional flushing fluid
1 Petroleum Production Engineering Research Institute of Huabei Oilfield Company, Renqiu, Hebei Province, 062552
2 Materils Branch of Huabei Petroleum administration co., ltd. Renqiu, Hebei Province, 062550
3 The Third Exploit Factory of Huabei Oilfield Company, Hejian, Hebei Province, 062450
4 The Forth Exploit Factory of Huabei Oilfield Company, Langfang, Hebei Province, 062552
In the process of oilfield development, the reservoir of oil wells were polluted due to well flushing and pump inspection, which resulted in long recovery period of oil well production after operation, or even difficult recovery of production. According to the states mentioned above, researchers developed XST and XSK series multifunctional flushing fluid, which had the function of anti-swelling, anti-pollution, as well as cleaning functions. The laboratory experiments showed that the oil washing efficiency ≥80%, anti-swelling rate ≥70%, as well as the damage value of reservoir permeability ≤30%. The above formula was applied in J902 oil well, which achieved great success. Not only the fishing tools went in smoothly, but also the recovery period after the well flushing operation was shortened to 4 days, which effectively reduced the impact of the well flushing operation on the well production.
© The Authors, published by EDP Sciences, 2021
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