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

【摘要】：常規(guī)產(chǎn)能模擬法是在確定氣藏儲集層物性下限過程中近似地將單井生產(chǎn)壓差設定為產(chǎn)能模擬的實驗壓差,但由于巖心尺度與單井控制區(qū)域尺度相差較大,導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,使預測結果誤差較大。為此,對常規(guī)產(chǎn)能模擬法進行改進,在進行產(chǎn)量相似換算之前加入了壓差相似轉換,根據(jù)換算后的結果設定實驗壓差,確保流體流速相等。將改進的產(chǎn)能模擬法應用到安岳氣田磨溪區(qū)塊以確定儲集層物性下限。研究結果表明,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;改進的產(chǎn)能模擬法確定的儲集層物性下限值要稍高一些。改進的產(chǎn)能模擬法確定的儲集層物性下限更加準確。
[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】： 中國石油大學石油工程教育部重點實驗室;中國石油西南油氣田分公司勘探開發(fā)研究院;
【基金】：國家973項目(2015CB250900) 國家科技重大專項(2016ZX05015-003)
【分類號】：TE31

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