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Anti-scaling Measures of Asp Flooding Technology

Author: WangZuo
Tutor: ZhuoXingJia; WangQingGuo
School: Northeast University of Petroleum
Course: Oil and Gas Field Development Project
Keywords: (APS) Scaling antisludging agent
CLC: TE358.5
Type: Master's thesis
Year: 2013
Downloads: 30
Quote: 0
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Abstract


Asp flooding technology which is a third oil-extraction technology for that offers the most recovery in recently years, owns huge availably to overcome either technical or economic challenges, achieves experimentally obvious improved results in the Pilot fields of Daqing Oilfield. This technology has broad prospects for oil and gas production application.However, during the experiment the production fluid scales extremely on the production equipment system surface, consequent to stuck pump which impacts production.In this paper, firstly due to the ASP applied field condition, the major components and formation mechanism of the deposit has been analyzed. Also, the antisludging mechanism for calcium scale and silicon scale has been point out,laboratory antisludging experiment has been taken to test the Conventional antisludging agent, such as PBTC PAA PMBS CAABS evaluation is been given from the antisludging results respectively according to the multiple components antisludging agent experiments, the SY-KD Formulation is fugured out.additionally, base on the SY-KD formulation, the molecular structure and composition of antisludging agent are optimizated, by designing the external hydrophilic nature dendrimer, which has internal huge hydrophobic cave. ethylenediamine in a weak alkaline conditions with a positive charge dendrimer PAMAM-1has been synthesized by Michael addition reaction and condensation reaction of Thalidomideand antisludging evaluation also is given for the Combination which mix PAMAM-1and SY-KD in centain proportion. Eventually, the New high effcient ASP antisludging agent is figured out.According to the research:the Agent compounded by the PBTC and CAABS get SY-KD for CaCO3scale inhibitor showed better performance than any single component. Inhibition rate can reach78%for the CaCO3scale by using the complex which is combining PBTC and CAABS at the ratio of3:7(the recipe used by Daqing Oilfield mining research institute);(the complex compound with small molecule (PBT) and copolymers (CAABS) has good antisludging performance (adding certain amount of Pamam-1will improve the Scale Performance of SY-KD. The best ratio is PAMAM-1:SY-KD=15:200. Inhibition rate can reach86.4%for the portland scale. the Research of the paper has Practical significance for the application of asp flooding technology in the oil production industry.

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CLC: > Industrial Technology > Oil and gas industry > Oil and gas development and mining > Production Engineering > Underground operations,workover > Well antiscale , Qing dirt
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