本文選題：頁巖氣　切入點：滑脫效應　出處：《石油鉆探技術》2017年01期 　論文類型：期刊論文

【摘要】：滑脫和應力敏感效應是影響頁巖氣藏開發(fā)動態(tài)的2個重要因素,為定量研究其對產氣量的影響,運用等效孔隙介質模型,建立了同時考慮滑脫和應力敏感效應的頁巖氣藏兩相滲流數(shù)學模型,采用有限差分方法對該模型進行了數(shù)值求解,用Fortran語言開發(fā)了頁巖氣藏數(shù)值模擬器,在定產量和定壓衰竭式開采條件下應用該模擬器研究了滑脫與應力敏感效應對頁巖氣井產能的影響規(guī)律,并將計算結果與美國Haynesville頁巖氣藏W3井的實際生產數(shù)據(jù)進行了對比。結果表明:衰竭式開發(fā)導致頁巖氣藏的壓力和滲透率均降低,生產井附近儲層壓力和滲透率急劇降低;在投產第1年內,產氣量雖迅速下降,但滑脫和應力敏感效應對產氣量影響較小;生產500d后,滑脫和應力敏感效應對產氣量產生明顯影響,滑脫效應使產氣量增加,應力敏感導致產氣量降低;模擬結果與生產數(shù)據(jù)的衰減趨勢吻合度較高,證明該頁巖氣藏數(shù)值模擬器計算結果具有較高的可靠性。頁巖氣藏開發(fā)數(shù)值模擬器的成功研制,為頁巖氣井產能預測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】： 中國地質大學(北京)能源學院;濮陽佰斯泰油氣技術服務有限公司;非常規(guī)天然氣能源地質評價與開發(fā)工程北京市重點實驗室(中國地質大學(北京));
【基金】：國家重大科技專項“大型油氣田及煤層氣開發(fā)”之課題“新一代油藏數(shù)值模擬軟件”(編號:2011ZX05009-006) 中央高�；究蒲袠I(yè)務費專項資金(編號:2652015142)聯(lián)合資助
【分類號】：TE332

【參考文獻】

相關期刊論文 前10條

1 李玉梅;呂煒;宋杰;李軍;楊宏偉;于麗維;;層理性頁巖氣儲層復雜網(wǎng)絡裂縫數(shù)值模擬研究[J];石油鉆探技術;2016年04期

2 張荻，

本文編號：1648799