本文選題：頁(yè)巖氣　切入點(diǎn)：滑脫效應(yīng)　出處：《石油鉆探技術(shù)》2017年01期 　論文類型：期刊論文

【摘要】：滑脫和應(yīng)力敏感效應(yīng)是影響頁(yè)巖氣藏開發(fā)動(dòng)態(tài)的2個(gè)重要因素,為定量研究其對(duì)產(chǎn)氣量的影響,運(yùn)用等效孔隙介質(zhì)模型,建立了同時(shí)考慮滑脫和應(yīng)力敏感效應(yīng)的頁(yè)巖氣藏兩相滲流數(shù)學(xué)模型,采用有限差分方法對(duì)該模型進(jìn)行了數(shù)值求解,用Fortran語(yǔ)言開發(fā)了頁(yè)巖氣藏?cái)?shù)值模擬器,在定產(chǎn)量和定壓衰竭式開采條件下應(yīng)用該模擬器研究了滑脫與應(yīng)力敏感效應(yīng)對(duì)頁(yè)巖氣井產(chǎn)能的影響規(guī)律,并將計(jì)算結(jié)果與美國(guó)Haynesville頁(yè)巖氣藏W3井的實(shí)際生產(chǎn)數(shù)據(jù)進(jìn)行了對(duì)比。結(jié)果表明:衰竭式開發(fā)導(dǎo)致頁(yè)巖氣藏的壓力和滲透率均降低,生產(chǎn)井附近儲(chǔ)層壓力和滲透率急劇降低;在投產(chǎn)第1年內(nèi),產(chǎn)氣量雖迅速下降,但滑脫和應(yīng)力敏感效應(yīng)對(duì)產(chǎn)氣量影響較小;生產(chǎn)500d后,滑脫和應(yīng)力敏感效應(yīng)對(duì)產(chǎn)氣量產(chǎn)生明顯影響,滑脫效應(yīng)使產(chǎn)氣量增加,應(yīng)力敏感導(dǎo)致產(chǎn)氣量降低;模擬結(jié)果與生產(chǎn)數(shù)據(jù)的衰減趨勢(shì)吻合度較高,證明該頁(yè)巖氣藏?cái)?shù)值模擬器計(jì)算結(jié)果具有較高的可靠性。頁(yè)巖氣藏開發(fā)數(shù)值模擬器的成功研制,為頁(yè)巖氣井產(chǎn)能預(yù)測(cè)提供了一種新的有效手段。
[Abstract]:Slippage and stress sensitivity are two important factors influencing shale gas reservoir development performance. In order to quantitatively study its influence on gas production, an equivalent pore medium model is used. A mathematical model of shale gas reservoir two-phase percolation considering slippage and stress-sensitive effect is established. The numerical model is solved numerically by using finite difference method, and the shale gas reservoir numerical simulator is developed by Fortran language. The effects of slippage and stress sensitivity on the productivity of shale gas wells are studied by using the simulator under the condition of constant output and constant pressure depletion. The calculated results are compared with the actual production data of well W3 in Haynesville shale gas reservoir in the United States. The results show that the pressure and permeability of shale gas reservoir are both reduced and the reservoir pressure and permeability are reduced sharply in the vicinity of production wells. In the first year of production, gas production decreased rapidly, but slippage and stress sensitivity effects had little effect on gas production, and after 500 days of production, slippage and stress sensitivity effects had obvious effects on gas production, and slippage effect increased gas production. The stress sensitivity leads to the decrease of gas production, and the simulation results are in good agreement with the attenuation trend of the production data, which proves that the numerical simulation results of the shale gas reservoir are highly reliable, and the numerical simulator for the development of the shale gas reservoir is developed successfully. It provides a new effective method for predicting shale gas well productivity.
【作者單位】： 中國(guó)地質(zhì)大學(xué)(北京)能源學(xué)院;濮陽(yáng)佰斯泰油氣技術(shù)服務(wù)有限公司;非常規(guī)天然氣能源地質(zhì)評(píng)價(jià)與開發(fā)工程北京市重點(diǎn)實(shí)驗(yàn)室(中國(guó)地質(zhì)大學(xué)(北京));
【基金】：國(guó)家重大科技專項(xiàng)“大型油氣田及煤層氣開發(fā)”之課題“新一代油藏?cái)?shù)值模擬軟件”(編號(hào):2011ZX05009-006) 中央高�；究蒲袠I(yè)務(wù)費(fèi)專項(xiàng)資金(編號(hào):2652015142)聯(lián)合資助
【分類號(hào)】：TE332

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相關(guān)期刊論文 前10條

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本文編號(hào)：1648799