南堡油田1-3人工島氣舉采油工藝技術(shù)研究
本文選題:氣舉采油 + 氣舉設(shè)計(jì)方法。 參考:《西南石油大學(xué)》2015年碩士論文
【摘要】:氣舉采油技術(shù)是當(dāng)前重要的人工舉升技術(shù)之一,在國(guó)內(nèi)外有著廣泛的應(yīng)用。本文通過(guò)研究整體氣舉采油技術(shù)在南堡1-3人工島的應(yīng)用,總結(jié)出了包括大斜度井氣舉采油設(shè)計(jì)方法、配套工具和工藝管柱、氣舉井工況診斷方法以及系統(tǒng)效率評(píng)價(jià)和優(yōu)化配氣方法等在內(nèi)的一整套氣舉采油技術(shù),為今后氣舉技術(shù)在南堡油田1-3人工島的繼續(xù)推廣提供了支撐。對(duì)于氣舉采油技術(shù)在灘海油田的推廣應(yīng)用有著重要的指導(dǎo)意義。本文以南堡油田1-3人工島整體氣舉采油平臺(tái)為例,研究氣舉采油技術(shù)在灘海大斜度井中應(yīng)用時(shí)的氣舉設(shè)計(jì)、井下工具選擇、工藝優(yōu)選、工況診斷、系統(tǒng)效率評(píng)價(jià)以及優(yōu)化配氣等重要環(huán)節(jié),旨在研究總結(jié)出一套適合南堡油田1-3人工島的氣舉采油技術(shù)、并推動(dòng)技術(shù)進(jìn)步。本文運(yùn)用了物理模擬實(shí)驗(yàn),計(jì)算機(jī)模擬實(shí)驗(yàn)以及現(xiàn)場(chǎng)實(shí)驗(yàn)等多種方法,內(nèi)容圍繞大斜度井多相管流壓力溫度計(jì)算方法優(yōu)選、大斜度井氣舉工藝管柱及工具研究、氣舉配套技術(shù)以及系統(tǒng)效率評(píng)價(jià)和優(yōu)化配氣方法研究等幾個(gè)方面進(jìn)行。主要進(jìn)展有:(1)對(duì)南堡油田氣舉井的多相管流流型進(jìn)行了分析總結(jié),結(jié)合不同傾角下氣液兩相流物理模擬實(shí)驗(yàn)結(jié)果和現(xiàn)場(chǎng)實(shí)際井況,對(duì)多相管流公式進(jìn)行了評(píng)價(jià)優(yōu)選,確定了適合南堡油田的不同井斜角的多相管流公式,精確預(yù)測(cè)不同井斜角下的井筒壓力溫度分布,并以此為基礎(chǔ)形成了大斜度井氣舉設(shè)計(jì)方法,通過(guò)大量的現(xiàn)場(chǎng)應(yīng)用,證明該設(shè)計(jì)方法滿足工程設(shè)計(jì)需要。(2)根據(jù)南堡油田氣舉井的井況及氣舉工具應(yīng)用經(jīng)驗(yàn),優(yōu)選了大斜度井氣舉井下工具,并提出了適應(yīng)不同井斜角的多種氣舉采油工藝管柱,滿足了油田不同井況,不同生產(chǎn)目的的需求。(3)總結(jié)優(yōu)選出了包括大斜度井氣舉工況診斷技術(shù),氣舉井清防蠟技術(shù)等在內(nèi)的適合灘海人工島整體氣舉的配套工藝技術(shù),這些技術(shù)保證了整個(gè)人工島氣舉井的協(xié)調(diào)生產(chǎn)運(yùn)行。(4)對(duì)南堡油田氣舉井系統(tǒng)效率進(jìn)行了分析和總結(jié),確定了適合油田的氣舉井系統(tǒng)效率評(píng)價(jià)方法,為單井、井組以及整個(gè)區(qū)塊的優(yōu)化配氣提供了依據(jù),節(jié)省高壓舉升氣體的同時(shí),提高了系統(tǒng)效率及產(chǎn)量。自2014年至今,南堡1-3人工島持續(xù)開(kāi)展氣舉井單井及區(qū)塊優(yōu)化配氣,共進(jìn)行10次大規(guī)模區(qū)塊配氣和908井次單井注氣調(diào)整,累計(jì)增油3140.9噸,舉升效率提高了5%。取得了明顯的的效果。
[Abstract]:Gas lift oil recovery technology is one of the most important artificial lift technologies, which is widely used at home and abroad. By studying the application of integral gas lift oil recovery technology in Nanbao 1-3 artificial island, this paper summarizes the design method, matching tools and technological pipe string of gas lift oil recovery including large slope wells. A whole set of gas-lift oil recovery techniques, such as the diagnosis method of gas lift well operating conditions, the evaluation of system efficiency and the optimization of gas distribution method, provide support for the further popularization of gas lift technology in 1-3 artificial island of Nanpu Oilfield in the future. It has important guiding significance for the application of gas lift oil recovery technology in beach oil field. In this paper, the gas lift design, downhole tool selection, process optimization and working condition diagnosis of gas lift oil recovery technology applied in large slope wells in beach sea are studied by taking 1-3 artificial island gas lift oil recovery platform in Nanbao Oilfield as an example. The evaluation of system efficiency and the optimization of gas distribution are aimed at studying and summing up a set of gas-lift oil recovery technologies suitable for 1-3 artificial islands in Nanpu Oilfield and promoting technological progress. In this paper, physical simulation experiments, computer simulation experiments and field experiments are used to optimize the calculation methods of pressure and temperature of multiphase pipe flow in large deviated wells, and to study the gas lift technology string and tools in high inclination wells. Gas lift supporting technology, system efficiency evaluation and optimization of gas distribution methods were studied. The main progress is as follows: (1) the multiphase pipe flow pattern of the gas lift well in Nanbao Oilfield is analyzed and summarized. Combined with the physical simulation results of gas-liquid two-phase flow under different dip angles and the actual well conditions in the field, the formula of multiphase pipe flow is evaluated and optimized. The formula of multiphase pipe flow suitable for different well angles in Nanbao Oilfield is determined, and the pressure and temperature distribution of wellbore under different inclined angles is accurately predicted. Based on this formula, a gas lift design method for large inclined wells is formed, which is applied in a large number of fields. It is proved that the design method meets the engineering design needs. (2) according to the well condition of the gas lift well in Nanbao Oilfield and the application experience of the gas lift tool, the gas lift downhole tool for the high slope well is selected, and several kinds of gas lift production process string adapted to the different inclined angle of the well are put forward. To meet the requirements of different well conditions and different production purposes in oil fields, the paper summarizes and selects a complete set of technologies suitable for the integrated gas lift of artificial islands in the beach, including the diagnosis technology of gas lift working conditions of large inclined wells and the technology of cleaning and preventing wax of gas lift wells, etc. These techniques ensure the coordinated operation of the whole artificial island gas lift well. The efficiency of the gas lift well system in Nanbao Oilfield is analyzed and summarized, and the evaluation method of the gas lift well system efficiency suitable for the oilfield is determined, which is a single well. The optimized gas distribution of the well group and the whole block provides the basis for saving the high pressure lift gas and improving the system efficiency and output. Since 2014, Nanbao 1-3 artificial Island has continuously developed single well and block optimization of gas distribution, carried out 10 large-scale block gas distribution and 908 single well gas injection adjustment, increased oil production by 3140.9 tons, and raised lifting efficiency by 5 tons. Obvious results have been achieved.
【學(xué)位授予單位】:西南石油大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2015
【分類(lèi)號(hào)】:TE355.3
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