PG主體氣藏開(kāi)發(fā)狀況研究及穩(wěn)產(chǎn)技術(shù)對(duì)策
發(fā)布時(shí)間：2018-11-10 14:31
【摘要】：隨著天然氣在全球能源所占比例越來(lái)越高,高含硫氣藏的開(kāi)發(fā)也變得越來(lái)越重要,同時(shí)我國(guó)四川盆地高含硫氣藏資源也十分豐富,探明高含硫天然氣累積儲(chǔ)量已經(jīng)超過(guò)6300×108m3,約占探明天然氣總儲(chǔ)量的1/6。然而我國(guó)高含硫碳酸鹽巖氣藏開(kāi)發(fā)技術(shù)尚不成熟,以PG氣田為代表的高含硫碳酸鹽巖氣藏具有H2S含量高、平面與縱向上分布不均,縱向上產(chǎn)層復(fù)雜、儲(chǔ)層非均質(zhì)強(qiáng),儲(chǔ)集類型多為裂縫—孔隙型(孔、縫、洞),儲(chǔ)集空間復(fù)雜,相態(tài)復(fù)雜及存在相變,部分生產(chǎn)井處于水體上方,受水侵影響嚴(yán)重等特點(diǎn),因此其生產(chǎn)動(dòng)態(tài)規(guī)律評(píng)估具有一定難度,為了能夠高效開(kāi)采,為PG主體氣藏的開(kāi)發(fā)提供技術(shù)支持和借鑒,需要對(duì)氣井產(chǎn)能評(píng)價(jià)方法做深入研究。 氣藏壓力變化是氣藏工程計(jì)算的重要依據(jù),從氣藏壓力計(jì)算入手,應(yīng)用M-B方法計(jì)算PG氣田的井底流壓,利用氣井生產(chǎn)數(shù)據(jù),結(jié)合物質(zhì)平衡法計(jì)算了氣井地層壓力。從硫的溶解度模型出發(fā),利用實(shí)測(cè)資料擬合Chrastil模型經(jīng)驗(yàn)公式和相平衡溶解度計(jì)算得到了適合于PG氣藏含硫氣體溶解度預(yù)測(cè)公式,并且建立了含硫飽和度的計(jì)算公式。 運(yùn)用生產(chǎn)動(dòng)態(tài)數(shù)據(jù),評(píng)價(jià)了PG氣田產(chǎn)水情況,以及水侵對(duì)氣井產(chǎn)能的影響,建立了PG氣田的產(chǎn)能評(píng)價(jià)方法：一點(diǎn)法,改進(jìn)一點(diǎn)法,二項(xiàng)式產(chǎn)能法,物質(zhì)平衡和產(chǎn)能結(jié)合法。物質(zhì)平衡和產(chǎn)能結(jié)合法考慮硫沉積對(duì)氣井產(chǎn)能的影響,該方法是一個(gè)動(dòng)態(tài)計(jì)算產(chǎn)能的過(guò)程,在考慮硫沉積對(duì)滲透率的影響大小基礎(chǔ)上計(jì)算了硫沉積對(duì)氣井產(chǎn)能影響大小。運(yùn)用產(chǎn)能計(jì)算方法對(duì)PG主體37口生產(chǎn)井進(jìn)行了產(chǎn)能評(píng)價(jià),并通過(guò)結(jié)果對(duì)比得出了最適用于PG氣田的產(chǎn)能計(jì)算方法。同時(shí)運(yùn)用采氣曲線法,節(jié)點(diǎn)分析法和經(jīng)驗(yàn)法對(duì)氣井進(jìn)行了配產(chǎn),應(yīng)用油藏影響函數(shù)法,流動(dòng)物質(zhì)平衡法,采氣曲線法對(duì)氣藏單井動(dòng)態(tài)儲(chǔ)量進(jìn)行了評(píng)估。針對(duì)氣藏在生產(chǎn)過(guò)程中存在的問(wèn)題,通過(guò)控水采氣、封堵產(chǎn)水層、酸化解堵等幾個(gè)方面提出了穩(wěn)產(chǎn)技術(shù)對(duì)策,討論了氣田穩(wěn)產(chǎn)年限并對(duì)優(yōu)化方案進(jìn)行了評(píng)價(jià)。
[Abstract]:With the increasing proportion of natural gas in the global energy, the development of high sulfur gas reservoir becomes more and more important. At the same time, the resources of high sulfur gas reservoir in Sichuan Basin are very rich, and the proven accumulative reserves of high sulfur gas have exceeded 6300 脳 108 m3. It accounts for about a sixth of the total proven natural gas reserves. However, the development technology of high sulfur carbonate gas reservoir in China is not mature. The high sulfur carbonate gas reservoir represented by PG gas field is characterized by high H 2S content, uneven distribution in plane and longitudinal, complex vertical production layer and strong heterogeneity of reservoir. The reservoir types are mostly fracture-pore type (pore, fracture, cavity), the reservoir space is complex, the phase state is complex and phase transition exists, and some production wells are above the water body, which are seriously affected by water invasion, etc. Therefore, it is difficult to evaluate its production performance law. In order to be able to produce efficiently and provide technical support and reference for the development of PG main gas reservoir, it is necessary to make a deep study on the method of gas well productivity evaluation. Gas reservoir pressure variation is an important basis for gas reservoir engineering calculation. Starting with gas reservoir pressure calculation, M-B method is used to calculate bottom hole flow pressure of PG gas field, and gas well production data is used to calculate gas well formation pressure combined with material balance method. Based on the sulfur solubility model, the empirical formula of Chrastil model and the calculation of phase equilibrium solubility are used to fit the empirical formula of Chrastil model and the formula for predicting the solubility of sulfur containing gas in PG gas reservoir is obtained, and the calculation formula of sulfur saturation is established. Based on the production dynamic data, this paper evaluates the water production situation of PG gas field and the influence of water invasion on gas well productivity, and establishes the productivity evaluation methods of PG gas field: one point method, improved one point method, binomial productivity method, material balance and productivity combination method. The influence of sulfur deposition on gas well productivity is considered by the combination of material balance and productivity. This method is a process of dynamic calculation of productivity. The influence of sulfur deposition on gas well productivity is calculated on the basis of considering the influence of sulfur deposition on permeability. The productivity evaluation of 37 production wells in the main body of PG is carried out by using productivity calculation method, and the most suitable productivity calculation method for PG gas field is obtained by comparing the results. At the same time, gas recovery curve method, node analysis method and empirical method are used to produce gas wells. The reservoir influence function method, flow material balance method and gas recovery curve method are used to evaluate the single well dynamic reserves of gas reservoir. In view of the problems existing in the production process of gas reservoirs, this paper puts forward the technical countermeasures of stabilizing production by controlling water and gas production, plugging water producing layers and removing water plugging by acid, discusses the years of stable production of gas fields and evaluates the optimization scheme.
【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)】：TE37
本文編號(hào)：2322724
[Abstract]:With the increasing proportion of natural gas in the global energy, the development of high sulfur gas reservoir becomes more and more important. At the same time, the resources of high sulfur gas reservoir in Sichuan Basin are very rich, and the proven accumulative reserves of high sulfur gas have exceeded 6300 脳 108 m3. It accounts for about a sixth of the total proven natural gas reserves. However, the development technology of high sulfur carbonate gas reservoir in China is not mature. The high sulfur carbonate gas reservoir represented by PG gas field is characterized by high H 2S content, uneven distribution in plane and longitudinal, complex vertical production layer and strong heterogeneity of reservoir. The reservoir types are mostly fracture-pore type (pore, fracture, cavity), the reservoir space is complex, the phase state is complex and phase transition exists, and some production wells are above the water body, which are seriously affected by water invasion, etc. Therefore, it is difficult to evaluate its production performance law. In order to be able to produce efficiently and provide technical support and reference for the development of PG main gas reservoir, it is necessary to make a deep study on the method of gas well productivity evaluation. Gas reservoir pressure variation is an important basis for gas reservoir engineering calculation. Starting with gas reservoir pressure calculation, M-B method is used to calculate bottom hole flow pressure of PG gas field, and gas well production data is used to calculate gas well formation pressure combined with material balance method. Based on the sulfur solubility model, the empirical formula of Chrastil model and the calculation of phase equilibrium solubility are used to fit the empirical formula of Chrastil model and the formula for predicting the solubility of sulfur containing gas in PG gas reservoir is obtained, and the calculation formula of sulfur saturation is established. Based on the production dynamic data, this paper evaluates the water production situation of PG gas field and the influence of water invasion on gas well productivity, and establishes the productivity evaluation methods of PG gas field: one point method, improved one point method, binomial productivity method, material balance and productivity combination method. The influence of sulfur deposition on gas well productivity is considered by the combination of material balance and productivity. This method is a process of dynamic calculation of productivity. The influence of sulfur deposition on gas well productivity is calculated on the basis of considering the influence of sulfur deposition on permeability. The productivity evaluation of 37 production wells in the main body of PG is carried out by using productivity calculation method, and the most suitable productivity calculation method for PG gas field is obtained by comparing the results. At the same time, gas recovery curve method, node analysis method and empirical method are used to produce gas wells. The reservoir influence function method, flow material balance method and gas recovery curve method are used to evaluate the single well dynamic reserves of gas reservoir. In view of the problems existing in the production process of gas reservoirs, this paper puts forward the technical countermeasures of stabilizing production by controlling water and gas production, plugging water producing layers and removing water plugging by acid, discusses the years of stable production of gas fields and evaluates the optimization scheme.
【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)】：TE37
【參考文獻(xiàn)】
相關(guān)期刊論文 前10條
1 李躍剛,李文濤;確定氣井平均地層壓力的簡(jiǎn)易方法[J];大慶石油地質(zhì)與開(kāi)發(fā);1999年01期
2 劉義坤,趙春森,李笑萍,翟云芳;雙滲地層平均地層壓力的確定[J];大慶石油學(xué)院學(xué)報(bào);1993年02期
3 曹耀峰;;普光高酸性氣田安全開(kāi)發(fā)的難點(diǎn)與對(duì)策[J];中國(guó)工程科學(xué);2011年08期
4 馬永生;郭彤樓;趙雪鳳;蔡勛育;;普光氣田深部?jī)?yōu)質(zhì)白云巖儲(chǔ)層形成機(jī)制[J];中國(guó)科學(xué)(D輯:地球科學(xué));2007年S2期
5 景艷;張士誠(chéng);景寧;呂鑫;;“一點(diǎn)法”在普光氣田產(chǎn)能預(yù)測(cè)中的應(yīng)用與改進(jìn)[J];石油天然氣學(xué)報(bào);2007年03期
6 孫耀庭;譚海芳;于世建;;普光氣田儲(chǔ)層特征及測(cè)井解釋方法[J];石油天然氣學(xué)報(bào);2008年01期
7 李玲;陳?ài)`發(fā);徐立恒;馬廣宇;;普光氣田天然氣組分特征及其碳同位素特征[J];內(nèi)蒙古石油化工;2008年04期
8 李建奇,李興業(yè),譚中國(guó);長(zhǎng)慶氣田氣藏單井配產(chǎn)模式的建立[J];內(nèi)蒙古石油化工;1998年04期
9 陳忠;沈金才;王倩雯;;“一點(diǎn)法”在建南氣田飛三氣藏的應(yīng)用與改進(jìn)[J];江漢石油職工大學(xué)學(xué)報(bào);2012年05期
10 黃德明;付德奎;劉欣;李娜;黃炳光;;一種新的“改進(jìn)一點(diǎn)法”在普光氣田產(chǎn)能預(yù)測(cè)中的應(yīng)用[J];內(nèi)蒙古石油化工;2012年16期
相關(guān)博士學(xué)位論文 前1條
1 張文亮;高含硫氣藏硫沉積儲(chǔ)層傷害實(shí)驗(yàn)及模擬研究[D];西南石油大學(xué);2010年
，本文編號(hào)：2322724
本文鏈接：http://sikaile.net/kejilunwen/shiyounenyuanlunwen/2322724.html
最近更新
教材專著
