本文選題：凝析氣藏 + 可采儲(chǔ)量��； 參考：《西南石油大學(xué)》2015年碩士論文

【摘要】：近年來(lái),隨著勘探開發(fā)的深入,我國(guó)發(fā)現(xiàn)了許多邊底水凝析氣藏,因該類凝析氣藏具有較高的開發(fā)價(jià)值,越來(lái)越受到人們的高度重視。但是,目前國(guó)內(nèi)缺乏完善的標(biāo)定凝析氣藏可采儲(chǔ)量的方法。針對(duì)塔里木吉拉克邊底水凝析氣藏多次進(jìn)行可采儲(chǔ)量評(píng)價(jià)差距很大,效果不理想的情況,亟需研究出一套較完整、系統(tǒng)的凝析氣藏可采儲(chǔ)量標(biāo)定方法。 本論文在調(diào)研大量國(guó)內(nèi)外凝析氣藏文獻(xiàn)的基礎(chǔ)上,主要利用現(xiàn)代油氣臧工程技術(shù)理論,綜合運(yùn)用氣藏工程、試井分析等學(xué)科理論與方法,結(jié)合吉拉克凝析氣藏的靜態(tài)資料和動(dòng)態(tài)開采特征,主要開展了以下幾個(gè)方面的研究,并取得了相應(yīng)成果： (1)剖析各種廢棄條件方法的適用條件,總結(jié)出適用于吉拉克邊底水凝析氣藏廢棄條件標(biāo)定的6種方法：4種廢棄壓力標(biāo)定方法和2種廢棄產(chǎn)量標(biāo)定方法。最終優(yōu)選出埋藏深度折算法和綜合分析法(經(jīng)濟(jì)—產(chǎn)能方程—井底流壓法)。 (2)分別從干氣和凝析油兩方面,對(duì)國(guó)內(nèi)外凝析氣藏采收率標(biāo)定方法進(jìn)行調(diào)研。總結(jié)出類比法、經(jīng)驗(yàn)公式法、解析法和漢格特(Hagoot)物質(zhì)平衡法共4類方法,并深入剖析以上方法的優(yōu)缺點(diǎn)。最終優(yōu)選出更符合凝析氣藏獨(dú)特?zé)崃W(xué)性質(zhì)的Hagoot法分別標(biāo)定吉拉克凝析氣藏的干氣和凝析油采收率。 (3)在參閱天然氣可采儲(chǔ)量標(biāo)定方法標(biāo)準(zhǔn)的基礎(chǔ)上,對(duì)目前國(guó)內(nèi)外凝析氣藏可采儲(chǔ)量傳統(tǒng)標(biāo)定方法進(jìn)行了歸納總結(jié),包括容積法、物質(zhì)平衡法、壓力恢復(fù)曲線法、衰減曲線法、水驅(qū)特征曲線法等,并對(duì)現(xiàn)有的計(jì)算凝析氣藏可采儲(chǔ)量方法中存在的不足進(jìn)行了改進(jìn)。從理論上推導(dǎo)了考慮反凝析現(xiàn)象的邊底水帶油環(huán)凝析氣藏的物質(zhì)平衡方程。同時(shí)將凝析氣藏物質(zhì)平衡線性方程與二項(xiàng)式產(chǎn)能修正方程相結(jié)合,改進(jìn)了物質(zhì)平衡與產(chǎn)能方程結(jié)合法。探索了井口壓力與累積凝析氣當(dāng)量的線性關(guān)系,改進(jìn)動(dòng)態(tài)遞減法使其直接可以分別求得凝析油可采儲(chǔ)量和凝析氣可采儲(chǔ)量。采用線性試差法對(duì)預(yù)測(cè)模型法標(biāo)定可采儲(chǔ)量進(jìn)行求解。提出了對(duì)于凝析氣藏進(jìn)入遞減階段之后,應(yīng)用胡-陳-張(HCZ)預(yù)測(cè)模型法將干氣和凝析油產(chǎn)量分別作為獨(dú)立對(duì)象進(jìn)行研究,直接計(jì)算干氣和凝析油的可采儲(chǔ)量。引入凝析氣地層體積系數(shù),改進(jìn)了虛擬曲線法,改進(jìn)后的虛擬曲線法計(jì)算得到的廢棄壓力比改進(jìn)前更高,可采儲(chǔ)量更小,更適用于凝析氣藏。 采用吉拉克凝析氣藏實(shí)際生產(chǎn)數(shù)據(jù)對(duì)上述方法進(jìn)行實(shí)例驗(yàn)證,分析評(píng)價(jià)各方法在吉拉克凝析氣藏的適用性,并剖析各方法的利弊,最終優(yōu)選出適用于吉拉克凝析氣藏可采儲(chǔ)量標(biāo)定方法的次序。本論文對(duì)衰竭式開發(fā)方式下邊底水凝析氣藏可采儲(chǔ)量標(biāo)定方法的研究,對(duì)同類型凝析氣藏可采儲(chǔ)量的標(biāo)定工作具有一定的指導(dǎo)意義和實(shí)用價(jià)值。
[Abstract]:In recent years, with the development of exploration and development, many side and bottom water condensate gas reservoirs have been discovered in China. Because of their high development value, more and more people attach importance to them. However, there is no perfect method for calibrating recoverable reserves of condensate gas reservoirs in China. In view of the fact that the recoverable reserves of Gerac side and bottom water condensate gas reservoirs in Tarim are not well evaluated many times, it is urgent to develop a complete and systematic method for the calibration of recoverable reserves of condensate gas reservoirs. Based on the investigation of a large number of domestic and international condensate gas reservoir literature, this paper mainly uses the theory of modern oil and gas reservoir engineering technology, comprehensive application of gas reservoir engineering, well test analysis and other disciplines theory and method. Based on the static data of Gerac condensate gas reservoir and the characteristics of dynamic production, the following aspects are mainly studied, and the corresponding results are obtained: (1) analyzing the applicable conditions of various methods of abandoned conditions, This paper summarizes six methods: 4 waste pressure calibration methods and 2 abandoned yield calibration methods which are suitable for calibrating waste condition of Jilak edge and bottom water condensate gas reservoir. In the end, burial depth conversion method and comprehensive analysis method (economic-productivity equation-bottom hole flow pressure method). (_ 2) are selected to investigate recovery calibration methods of condensate gas reservoirs at home and abroad from dry gas and condensate oil, respectively. This paper summarizes four kinds of methods, such as analogy, empirical formula, analytical method and Hagoot's material balance method, and deeply analyzes the advantages and disadvantages of the above methods. Finally, Hagoot method, which is more suitable for the unique thermodynamic properties of condensate gas reservoir, is selected to calibrate dry gas and condensate oil recovery of Gerac condensate gas reservoir respectively. (3) based on the standard of calibration method for recoverable reserves of natural gas, The traditional calibration methods for recoverable reserves of condensate gas reservoirs at home and abroad are summarized, including volume method, material balance method, pressure recovery curve method, attenuation curve method, water drive characteristic curve method, etc. The existing methods for calculating recoverable reserves of condensate gas reservoirs are improved. In this paper, the material balance equation of the oil ring condensate gas reservoir with edge and bottom water belt considering the reverse condensation phenomenon is derived theoretically. At the same time, combining the linear equation of condensate gas reservoir material balance with the binomial productivity correction equation, the combination method of material balance and productivity equation is improved. The linear relationship between wellhead pressure and cumulative condensate gas equivalent is explored and the recoverable reserves of condensate oil and recoverable condensate gas can be obtained directly by improving the dynamic decline method. The linear trial difference method is used to calculate the recoverable reserves by the prediction model method. It is proposed that after the condensate gas reservoir enters the stage of decline, the production of dry gas and condensate oil will be studied separately by the prediction model of Hu Chen Zhang (HCZ), and the recoverable reserves of dry gas and condensate oil will be calculated directly. The volume coefficient of condensate gas formation is introduced and the virtual curve method is improved. The abandoned pressure calculated by the improved virtual curve method is higher and the recoverable reserves are smaller than before, which is more suitable for condensate gas reservoirs. The practical production data of Gerac condensate gas reservoir are used to verify the above methods, the applicability of each method in Gerac condensate gas reservoir is analyzed and the advantages and disadvantages of each method are analyzed. Finally, the order of recoverable reserves calibration method suitable for Jirac condensate gas reservoir is selected. This paper studies the method of the recoverable reserve of the condensate gas reservoir with bottom water under the depleted development mode, and has certain guiding significance and practical value for the calibration of the recoverable reserve of the same type condensate gas reservoir.
【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
【分類號(hào)】：P618.13

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本文編號(hào)：2102043