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Inhibitor Squeeze Technique for Scale Control of Oil Wells in W2 Jiangsu Oilfield

Author: ZuoFangPing
Tutor: FanZeXia
School: China University of Petroleum
Course: Oil and Gas Well Engineering
Keywords: Antiscale Squeeze Mechanism Forecast
CLC: TE358.5
Type: Master's thesis
Year: 2008
Downloads: 168
Quote: 4
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Abstract


Scaling is one of the major problems encountered in the late water flooding , has seriously affected the normal production and gathering and transportation of crude oil , and increase the cost of production , causing huge economic losses to the oilfield production . In this paper, liquid scale inhibitor for traditional continuous or intermittent injection from the wellhead could easily lead to uneven dosing pharmaceutical consumption , the shortcomings of the heavy workload and the effect of instability , as well as dosing solid anti-scaling block can not effectively prevent the fouling of the near-wellbore formation the problem, research the liquid antifoulant downhole squeeze antifouling technology . Inorganic scaling trend prediction software (OFISTP3.0) of application oilfield the scaling trend at this stage of the Jiangsu Oilfield predicted , a comprehensive analysis of the causes and impact of Jiangsu Oilfield fouling factors . In the theoretical analysis of the relevant factors impact scale inhibitor squeeze life antiscalants strata porous media transmission / motion and adsorption / desorption characteristics of the scale inhibitor squeeze life , at the same time squeeze dispensation process of operating parameters, the formation parameters the antifoulant squeeze life also can not be ignored . The comparative analysis of several scale inhibitor squeeze life prediction model , the experimental data and the field data of Jiangsu Oilfield improved empirical model , and the preparation of a scale inhibitor squeeze life prediction software . Compatibility experiments , static antifouling rate experiments , the the dynamic minimum effective concentration (MIC) test , the dynamic adsorption / desorption experimental evaluation screening suitable for the Jiangsu Oilfield strata antifouling squeeze antifoulant injection technology ; Meanwhile, the anti- fouling agent and preservative complex with anti-scaling effect of experimental research . Experimental results show that complex better the antifoulant SA1320C with preservatives BUCT . According to the the Jiangsu Oilfield the fouling status quo and the laboratory the antiscale experimental study , developed a scale inhibitor downhole squeeze . Jiangsu Oilfield has to carry out anti-scaling scene test 2 wells , more than a year of real-time tracking of the monitoring and inspection of pump operations that scale inhibitor flowback mass concentration , downhole squeeze Note anti-scaling technology in Jiangsu Oilfield and the application is successful , bring a good economic and social benefits for the oil field production .

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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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