本文選題：增壓開采 + 動態(tài)特征��； 參考：《西南石油大學(xué)》2015年碩士論文

【摘要】：靖邊氣田位于鄂爾多斯盆地東部,是長慶氣區(qū)的重要?dú)馓�。目前靖邊氣田進(jìn)入開發(fā)中后期,氣藏資源和氣藏壓力迅速下降,部分氣井井口壓力已經(jīng)接近甚至低于輸氣管網(wǎng)入網(wǎng)壓力；氣田儲層非均質(zhì)性明顯,產(chǎn)水井、間開井比重增大,為了提高氣田采收率、穩(wěn)產(chǎn)能力和產(chǎn)量,2010年起,靖邊氣田對老井開始增壓開采。隨著增壓開采井?dāng)?shù)目的增加,需要監(jiān)測和評價增壓開采的工藝技術(shù)和開發(fā)效果。 靖邊氣田位于陜西與內(nèi)蒙古交界處,主要含氣氣層位于奧陶系馬家溝組,主力儲層是馬五段。碳酸鹽巖儲層巖石微裂縫發(fā)育,主力氣層馬五1+2氣層孔隙度5.2%。天然氣類型為干氣,微含硫,二氧化碳含量基本不變。氣藏?zé)o邊底水,為封閉定容氣藏。壓力分布為沿著西南-東北方向,地層壓力逐步降低。氣藏具有統(tǒng)一的地溫梯度,說明為統(tǒng)一的地溫場。 本文對靖邊氣田南8-9-14增壓站的增壓氣井進(jìn)行生產(chǎn)動態(tài)分析,生產(chǎn)動態(tài)分析表明南8-9-14站氣井基本不產(chǎn)地層水,為干氣氣井�；跉饩鰤呵昂笕债a(chǎn)氣量、氣井產(chǎn)能指數(shù)、氣井單井控制儲量對增壓效果進(jìn)行評價。對比了增壓前后各氣井的日產(chǎn)氣量；使用Topaze歷史擬合法計算了增壓開采時各氣井的當(dāng)前地層壓力,使用平均參數(shù)方法計算了南8-9-14增壓站各氣井增壓前后的井底流壓,計算了氣井增壓前后的產(chǎn)能指數(shù)；使用流動物質(zhì)平衡法計算了氣井增壓開采前后的單井控制儲量。分析表明增壓開采可以顯著提高日產(chǎn)氣量、產(chǎn)能指數(shù)和單井控制儲量,改善開發(fā)效果。 運(yùn)用一點(diǎn)法經(jīng)驗公式和理論計算公式評價氣井增壓后的產(chǎn)能,考慮到理論計算公式更符合實(shí)際流動情況,采用理論公式計算值計算的無阻流量作為氣井無阻流量。分別使用經(jīng)驗法、采氣指數(shù)法和節(jié)點(diǎn)分析法分析了氣井合理工作制度�；诟咚俜沁_(dá)西滲流原理,為了提高地層能量的使用效率,基于采氣指數(shù)法配產(chǎn)產(chǎn)量制定氣井合理工作制度。目前的氣井配產(chǎn)量高于優(yōu)化后的氣井產(chǎn)量,需要降低配產(chǎn)。對增壓開始后按照合理工作制度生產(chǎn)時不同時間的地層壓力進(jìn)行了預(yù)測,擬合結(jié)果表明按照優(yōu)化過的工作制度生產(chǎn)可以延緩地層壓力下降速度,目前的配產(chǎn)偏高,需要進(jìn)行優(yōu)化處理,降低配產(chǎn)；針對氣井增壓開采后期定產(chǎn)降壓和定壓降產(chǎn)兩個生產(chǎn)階段,編制軟件繪制了氣井的生產(chǎn)動態(tài)預(yù)測曲線,以本文中計算的合理產(chǎn)量預(yù)測了氣井穩(wěn)產(chǎn)時間、穩(wěn)產(chǎn)末期地層壓力、穩(wěn)產(chǎn)末期采出程度和采出程度增幅,計算了各氣井穩(wěn)產(chǎn)結(jié)束時間。
[Abstract]:Jingbian gas field, located in the eastern part of Ordos Basin, is an important gas field in Changqing gas area.At present, in the middle and late stage of development of Jingbian gas field, the gas reservoir resources and gas reservoir pressure are rapidly decreasing, the wellhead pressure of some gas wells is close to or even lower than that of the gas transmission network, the reservoir heterogeneity of the gas field is obvious, and the proportion of production wells and open wells increases.In order to improve oil recovery, stable production capacity and production, Jingbian gas field began pressurized production of old wells in 2010.With the increase of the number of pressurized production wells, it is necessary to monitor and evaluate the process technology and development effect of pressurized production.Jingbian gas field is located at the junction of Shaanxi and Inner Mongolia, the main gas-bearing reservoir is located in Majiagou formation of Ordovician, and the main reservoir is Ma-5 formation.The rock microfractures of carbonate reservoir are developed, and the porosity of the main gas layer Ma 512 is 5.2.Natural gas type is dry gas, slightly sulfur, carbon dioxide content is basically unchanged.The gas reservoir has boundless bottom water, which is a sealed and constant volume gas reservoir.The pressure distribution is along the southwest-northeast direction, the formation pressure gradually reduces.The gas reservoir has a uniform geothermal gradient, indicating a unified geothermal field.In this paper, the production performance of the pressurized gas well at the South 8-9-14 booster station in Jingbian Gas Field is analyzed. The analysis of the production performance shows that the gas well of the South 8-9-14 Station basically does not produce formation water and is a dry gas well.Based on the daily gas production before and after pressurization, the productivity index of gas wells and the controlled reserves of single well in gas wells, the pressurization effect is evaluated.The daily gas production of each gas well before and after pressurization is compared, the current formation pressure of each gas well during pressurized production is calculated by using Topaze historical fitting method, and the bottom hole flow pressure before and after pressurization of each gas well in Nan8-9-14 turbocharging station is calculated by using the average parameter method.The productivity index of gas well before and after pressurization is calculated and the controlled reserves of single well before and after pressurized production of gas well are calculated by using the method of flowing material balance.The analysis shows that pressurized production can significantly increase daily gas production, productivity index and controlled reserves of single well, and improve the development effect.The one-point empirical formula and theoretical calculation formula are used to evaluate the productivity of gas wells after pressurization. Considering that the theoretical calculation formula is more in line with the actual flow situation, the unobstructed flow rate calculated by the theoretical formula is used as the unhindered flow rate of the gas well.The rational working system of gas wells is analyzed by means of empirical method, gas recovery index method and node analysis method respectively.Based on the principle of high-speed non-Darcy percolation and in order to improve the efficiency of using formation energy, the reasonable working system of gas wells is established based on the production ratio of gas production index method.The current gas well production is higher than that of the optimized gas well, so it is necessary to reduce the production.The formation pressure at different time after production according to the reasonable working system is predicted. The fitting results show that the optimized working system can delay the falling rate of formation pressure, and the current distribution production is higher.The production performance prediction curves of gas wells are drawn up by software aiming at the two production stages of constant production and constant pressure drop in the later stage of gas well pressurization production.The reasonable production rate calculated in this paper is used to predict the stable production time of gas well, the formation pressure at the end of stable production, the recovery degree and the increase of recovery degree at the end of stable production, and the end time of steady production of each gas well is calculated.
【學(xué)位授予單位】：西南石油大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TE37

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 孟慶華;;川西致密砂巖氣田開發(fā)后期增壓開采技術(shù)[J];四川文理學(xué)院學(xué)報;2007年05期

2 高春光,侯曉春,唐春梅;Fetkovich產(chǎn)量時間標(biāo)準(zhǔn)曲線研究[J];石油天然氣學(xué)報(江漢石油學(xué)院學(xué)報);2005年S4期

3 于希南;黃全華;關(guān)成禮;楊建;;靖邊氣田陜45區(qū)塊增壓開采時機(jī)的確定[J];石油天然氣學(xué)報;2009年01期

4 劉羿;王繼波;胥元剛;;氣井生產(chǎn)系統(tǒng)節(jié)點(diǎn)分析在大牛地氣田的應(yīng)用[J];遼寧化工;2009年12期

5 王曉榮;王惠;宋漢華;韓勇;;實(shí)現(xiàn)低壓氣井增壓開采的噴射引流技術(shù)[J];石油化工應(yīng)用;2009年06期

6 崔學(xué)敏;馬漢平;吳茂富;安宏廣;;靖邊氣田陜17井區(qū)增壓開采效果評價[J];石油化工應(yīng)用;2014年02期

7 戴云飛,寇可新,孫紅,劉尚明;天然氣增壓站配套與選型研究[J];燃?xì)廨啓C(jī)技術(shù);2002年01期

8 郝玉鴻,許敏,徐小蓉;正確計算低滲透氣藏的動態(tài)儲量[J];石油勘探與開發(fā);2002年05期

9 陳京元,周靜,鄭偉;川東北飛仙關(guān)組氣藏氣井合理產(chǎn)量的研究[J];天然氣勘探與開發(fā);2003年01期

10 湯勇,孫雷,李士倫,張百靈,楊錦林,王欣;新場氣田蓬萊鎮(zhèn)組氣藏增壓開采數(shù)值模擬研究[J];天然氣工業(yè);2004年08期

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