本文選題：安岳氣田 + 磨溪區(qū)塊　； 參考：《新疆石油地質(zhì)》2017年03期

【摘要】：常規(guī)產(chǎn)能模擬法是在確定氣藏儲(chǔ)集層物性下限過(guò)程中近似地將單井生產(chǎn)壓差設(shè)定為產(chǎn)能模擬的實(shí)驗(yàn)壓差,但由于巖心尺度與單井控制區(qū)域尺度相差較大,導(dǎo)致巖心出口端的流體流速與油氣井井筒端的流體流速并不相等,使預(yù)測(cè)結(jié)果誤差較大。為此,對(duì)常規(guī)產(chǎn)能模擬法進(jìn)行改進(jìn),在進(jìn)行產(chǎn)量相似換算之前加入了壓差相似轉(zhuǎn)換,根據(jù)換算后的結(jié)果設(shè)定實(shí)驗(yàn)壓差,確保流體流速相等。將改進(jìn)的產(chǎn)能模擬法應(yīng)用到安岳氣田磨溪區(qū)塊以確定儲(chǔ)集層物性下限。研究結(jié)果表明,在氣井生產(chǎn)壓差為6.0 MPa,產(chǎn)層有效厚度為40 m的條件下,利用改進(jìn)的產(chǎn)能模擬法確定的孔隙度下限為2.74%,滲透率下限為0.015 mD;常規(guī)產(chǎn)能模擬法確定的孔隙度下限為2.42%,滲透率下限為0.011 D;改進(jìn)的產(chǎn)能模擬法確定的儲(chǔ)集層物性下限值要稍高一些。改進(jìn)的產(chǎn)能模擬法確定的儲(chǔ)集層物性下限更加準(zhǔn)確。
[Abstract]:In the process of determining the lower limit of physical properties of gas reservoir reservoir, the conventional productivity simulation method approximately sets the production pressure difference of single well as the experimental pressure difference of productivity simulation, but the difference between core scale and single well control area scale is large. The flow velocity at the outlet end of the core is not equal to that at the wellbore end of the oil and gas well, which results in a large error in the prediction results. For this reason, the conventional productivity simulation method is improved, the pressure difference similarity conversion is added before the yield similarity conversion is carried out, and the experimental pressure difference is set up according to the result of the conversion, so as to ensure that the flow velocity is equal. The improved productivity simulation method is applied to Moxi block of Anyue gas field to determine the lower limit of reservoir physical properties. The results show that under the condition that the production pressure difference of gas well is 6.0 MPA and the effective thickness of production layer is 40 m, The lower limit of porosity and permeability determined by the improved productivity simulation method is 2.74 and the lower limit of permeability is 0.015 mD. the lower limit of porosity and permeability determined by conventional productivity simulation method is 2.42 and 0.011 Drespectively, and the physical properties of reservoir determined by the improved productivity simulation method The lower limit is slightly higher. The lower limit of reservoir properties determined by the improved productivity simulation method is more accurate.
【作者單位】： 中國(guó)石油大學(xué)石油工程教育部重點(diǎn)實(shí)驗(yàn)室;中國(guó)石油西南油氣田分公司勘探開(kāi)發(fā)研究院;
【基金】：國(guó)家973項(xiàng)目(2015CB250900) 國(guó)家科技重大專(zhuān)項(xiàng)(2016ZX05015-003)
【分類(lèi)號(hào)】：TE31

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