Novel method and filter device for evaluation of flocculant for oilfield produced water
A filter device and evaluation method technology, which is applied to loose filter material filters, filter separation, measurement devices, etc., can solve the problem of insignificant differences in the evaluation results of pharmaceuticals, and achieve the effect of improving the degree of differentiation
Active Publication Date: 2018-04-03
PETROCHINA CO LTD +2
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[0003] The present invention aims at overcoming the problem of insignificant difference in drug evaluation results due to the strong retention and filtering effect of filter paper in the existing flocculant evaluation process existing in the background technology, and provides a new evaluation method for flocculant used in oilfield produced water
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[0012] The present invention will be further described below in conjunction with accompanying drawing and specific embodiment:
[0013] as attached figure 1 As shown, a filter device used for flocculant evaluation of oilfield produced water includes a separatory funnel 1, the lower part of the separatory funnel 1 is connected to a filter column, and the filter column is composed of a white silica gel tube 3, a quartz sand filter material 2, a magnetic Iron ore filter material 4, quartz sand cushion material 5, pipette tip 6; the filter device is assembled before use: first fill the 1ml pipette tip with clean quartz sand with a particle size of 2mm to 3mm , installed to the lower end of a section of silicone tube with an outer diameter of 12mm and a wall thickness of 2mm, ensuring that the silicone tube is embedded and does not fall off; then, add 10.62g (about 6mL) into the silicone tube through a triangular funnel from the other end of the silicone tube Clean magnetite filte...
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Abstract
The invention relates to a novel method and a filter device for evaluation of a flocculant for oilfield produced water and aims to solve the problem that chemical evaluation results have no obvious differences when filter paper is used for filtering in the conventional flocculant evaluation process. The filter device is characterized in that a filter column mainly comprises a white silicone tube,a quartz sand filtering material, a magnetite filtering material, quartz sand padding and a pipette tip, wherein the white silicone tube is filled with the quartz sand filtering material and the magnetite filtering material from top to bottom. The evaluation method comprises the following steps: (1) after chemical adding and static settling, a water sample is poured into the preheated filter device under normal pressure, and a filtrate is received by measuring cylinders arranged below the filter device; (2) the first received 50 mL filtrate is abandoned in the filtrate receiving process, thenthe filtrate in certain volume is received by each measuring cylinder, and oil content of the water and content of suspended solids in the water are tested. With adoption of the evaluation method, measured data can better meet actual situations, results are more real and more effectively, and the effects of the different chemicals have obvious differences.
Description
technical field [0001] The invention relates to the technical field of oil field recovery, in particular to a new evaluation method for flocculants used in oil field produced water and a filtering device adopted therefor. Background technique [0002] At present, the evaluation of the flocculant effect in the oil field is mainly based on SY / T 5796 and Q / SY DQ0824-2006. The main steps are water sample dosing and stirring, static sedimentation, filter paper filtration, and testing. However, the filter paper used for filtration in the standard is not comparable to the filter material in the on-site filtration device, and cannot truly simulate the on-site filtration effect. Industrial produced water filter, especially the interception efficiency of oil in water is higher, and the oil content of filtered water is too low. Therefore, in the flocculant evaluation process, due to the filter paper's strong interception and filtration effect, the difference in the evaluation results ...
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IPC IPC(8): G01N33/00B01D24/20
CPCB01D24/008B01D24/205G01N33/00
Inventor 吴迪宋辉蔡徇李颖慧
Owner PETROCHINA CO LTD