【摘要】：由于油氣水三相流流動的復雜性,目前還沒有具有普通適用性的模擬計算公式來計算混輸管道的工藝設計。PIPEPHASE軟件在這一領域運用的比較廣泛,自身具有計算模型簡單化、縮短時間等特點,采用比較簡單的經驗計算公式組合。PIPEPHASE軟件內有多種經驗計算公式,由于每一種計算公式的適用范圍不同,所以便會導致在相同條件下,通過各個公式計算出來的結果會不一樣。所以在利用PIPEPHASE計算多相流混輸管道壓降時,所選用的經驗計算公式會影響最終的結果。每種經驗公式都有他相適應的油品物性,而PIPEPHASE軟件無法根據(jù)現(xiàn)有的條件做出相適合的判斷,并選取較為匹配的公式,所以在利用PIPEPHASE軟件模擬計算時,人為選擇會對結果造成比較大的影響,誤差相對的也會增加,還需要利用實驗和現(xiàn)場的實際數(shù)據(jù)進行核實,分析其影響因素。北三三轉油脫水站是屬于薩北油層的脫水站,該站管網(wǎng)復雜,且運行時間長,因其特殊情況的存在,導致管道腐蝕現(xiàn)象增多,為了保證該脫水站的正常生產運行,就需要對站內管線進行經常性的檢查,并對腐蝕導致不能正常生產的管線進行更換,本文正是針對這種情況,通過PIPEPHASE軟件,運用更準確、更直觀的軟件技術來分析北三三轉油脫水站的管道運行基本情況,從而為此后選取合理的設計參數(shù)打下堅實的基礎,并為提高管道安全生產系數(shù)提供重要的保障。本文利用PIPEPHASE軟件,根據(jù)北三三轉油脫水站所提供的生產數(shù)據(jù),將模擬出的結果與實際數(shù)據(jù)進行誤差對比,并對北三三轉油脫水站的部分管網(wǎng)進行誤差因素分析,分析出含水率、管路溫度、產油量、產氣量、管徑大小等因素對計算誤差有影響。其中DR的計算模型應用于北三三轉油脫水站的誤差最小,但當產油量大于140m3/d或含水率大于90%時,該方法的誤差變高,因此對PIPEPHASE中的壓降相關式DR模型進行修正,修正后,擴大了DR的適用范圍和計算精度,更加適用于北三三轉油脫水站的壓降計算研究,為工程設計建設提供可靠的依據(jù)。最后,利用C++Builder6.0軟件自主編制一套適用于北三三轉油脫水站的程序,該程序可以自由錄入管道的基本參數(shù),流動參數(shù),節(jié)點數(shù)據(jù)以及圖象的顯示。
[Abstract]:Because of the complexity of oil-gas-water three-phase flow, at present there is no general applicable simulation formula to calculate the process design of mixed pipeline. PIPEPHASE software is widely used in this field, and its own calculation model is simplified. In order to shorten the time and so on, there are many kinds of empirical formulas in the software of PIPEPHASE, because of the different scope of application of each formula, it will lead to the same conditions. The results calculated by each formula will be different. So the empirical formula will affect the final result when calculating the pressure drop of multiphase flow pipeline by using PIPEPHASE. Each empirical formula has its own physical properties of oil products, but the PIPEPHASE software can not make the appropriate judgment according to the existing conditions, and select the more matched formula. So, when using the PIPEPHASE software to simulate the calculation, The artificial selection will have a great influence on the result and the error will increase relatively. It is also necessary to use the actual data of the experiment and the field to verify and analyze the influencing factors. The Beisanshanzhuan oil dehydration station is a dehydration station in the Sabei oil reservoir. The pipe network of the station is complicated and the operation time is long. Due to the existence of its special circumstances, the corrosion phenomenon of the pipeline is increased. In order to ensure the normal operation of the dehydration station, It is necessary to carry out regular inspection of the pipeline in the station, and to replace the pipeline which is not normally produced due to corrosion. This paper aims at this situation, using the PIPEPHASE software to use more accurately. More intuitionistic software technology is used to analyze the basic conditions of pipeline operation in the North Sanshanzhuan Oil Dewatering Station, thus laying a solid foundation for selecting reasonable design parameters and providing an important guarantee for improving the safety production coefficient of the pipeline. In this paper, according to the production data provided by the North Sanshanzhuan Oil Dewatering Station, the simulated results are compared with the actual data by using PIPEPHASE software, and the error factors of some pipe networks of the Beisanshanzhuan Oil Dewatering Station are analyzed, and the water cut is analyzed. Pipeline temperature, oil production, gas production, pipe diameter and other factors affect the calculation error. The calculation model of Dr is applied to the North Sanshanzhuan oil dehydration station with the smallest error, but when the oil production is greater than 140m3/d or the water cut is greater than 90, the error of this method becomes higher. Therefore, the pressure drop correlation Dr model in PIPEPHASE is modified, and the correction is made. The application range and accuracy of Dr are expanded, and it is more suitable for the calculation of pressure drop in the North Sanzhuan Oil Dewatering Station, which provides a reliable basis for the engineering design and construction. Finally, a set of program is programmed by C Builder 6.0, which can input the basic parameters, flow parameters, node data and image of the pipeline freely.
【學位授予單位】：東北石油大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TE868

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本文編號：2135710