發(fā)布時(shí)間：2018-05-13 05:03

  本文選題：墾利原油 + 管道��； 參考：《西南石油大學(xué)》2015年碩士論文

【摘要】：墾利3-2油田群位于渤海海域南部,所處海域平均水深大約在20米。主要生產(chǎn)設(shè)施包括7個(gè)海上平臺和一個(gè)陸上石油處理終端。其中包括BZ35-2CEPA和KL3-2CEPA(簡稱KL3-2)兩座中心平臺,本文主要針對KL3-2到陸上終端管線進(jìn)行結(jié)蠟研究,預(yù)測蠟層厚度,為清管周期的確定提供依據(jù),同時(shí)為管內(nèi)輸送原油篩選防蠟劑。主要內(nèi)容如下： (1)對目前原油蠟沉積機(jī)理、影響因素、蠟沉積實(shí)驗(yàn)裝置和蠟沉積數(shù)學(xué)模型等相關(guān)情況進(jìn)行調(diào)研。 (2)選取KL3-2中心平臺輸出的混合原油為實(shí)驗(yàn)油樣(命名為墾利原油),通過室內(nèi)實(shí)驗(yàn)對所選油樣進(jìn)行物性研究,包括原油含蠟量測定、凝點(diǎn)測定、密度測定、粘度測定和比熱容測定。 (3)根據(jù)文獻(xiàn)調(diào)研,選用黃啟玉蠟沉積模型。利用Fluent軟件和普適性結(jié)蠟?zāi)Ｐ陀?jì)算出在中國石油大學(xué)(北京)環(huán)道實(shí)驗(yàn)裝置測試段內(nèi)墾利原油的蠟沉積速率,并驗(yàn)證了該方法的可行性。 (4)根據(jù)不同流量和不同油壁溫差條件下,中國石油大學(xué)(北京)環(huán)道實(shí)驗(yàn)裝置測試段內(nèi)得到的蠟沉積速率,研究了油溫、油壁溫差以及流速對蠟沉積速率的影響規(guī)律。回歸出了墾利原油的蠟沉積模型。 (5)對KL3-2至陸上終端管線內(nèi)蠟沉積厚度進(jìn)行了研究。根據(jù)已知條件,運(yùn)用Matlab編寫了程序,預(yù)測該管線內(nèi)不同輸量、不同季節(jié)條件下不同位置處蠟沉積厚度隨時(shí)間的變化情況,為清管周期的確定提供依據(jù)。 (6)通過市場調(diào)研,針對墾利原油的性質(zhì)選出了4種防蠟劑,對這4種防蠟劑進(jìn)行室內(nèi)結(jié)蠟實(shí)驗(yàn)。結(jié)果表明：防蠟劑FJ-1101A效果最好,當(dāng)加劑溫度為80℃,防蠟劑添加量為500mg/L時(shí),其最佳防蠟率能達(dá)到63%,墾利原油析蠟點(diǎn)降幅能達(dá)到15℃。
[Abstract]:Kenli 3-2 oilfield group is located in the south of Bohai Sea with an average water depth of about 20 meters. The main production facilities include 7 offshore platforms and 1 onshore oil processing terminal. There are two central platforms of BZ35-2CEPA and KL3-2CEPA (KL3-2 for short). In this paper, the wax deposit from KL3-2 to land-based pipeline is studied, and the thickness of wax layer is predicted, which provides the basis for determining the period of pipe-cleaning, and at the same time, it provides a basis for the selection of wax-proof agent for transporting crude oil inside the pipeline. The main contents are as follows: 1) the mechanism, influencing factors, experimental equipment and mathematical model of wax deposition in crude oil were investigated. The mixed crude oil from the KL3-2 central platform was selected as the experimental oil sample (named Kenli crude oil). The physical properties of the selected oil samples were studied through laboratory experiments, including the determination of the wax content of crude oil, the determination of freezing point, and the determination of density. Viscosity measurement and specific heat capacity measurement. According to the literature investigation, Huang Qi-yu wax deposition model was selected. The wax deposition rate of Kenli crude oil was calculated by using Fluent software and universal wax deposition model in the test section of the ring channel experimental facility of China University of Petroleum (Beijing), and the feasibility of the method was verified. According to different flow rate and different oil wall temperature difference, the effects of oil temperature, oil wall temperature difference and flow velocity on wax deposition rate are studied. The wax deposition model of Kenli crude oil was regressed. The wax deposit thickness in the pipeline from KL3-2 to land terminal is studied. According to the known conditions, a program has been compiled by Matlab to predict the variation of wax deposition thickness with time at different positions and in different seasons in the pipeline, which provides a basis for determining the pipe-clearing period. 6) through market research, four kinds of waxproof agents were selected according to the properties of Kenli crude oil, and the wax deposition experiments were carried out on these four kinds of waxproof agents. The results show that FJ-1101A has the best effect. When the temperature is 80 鈩，

本文編號：1881758