發(fā)布時(shí)間：2018-04-26 12:06

  本文選題：頁(yè)巖氣 + 體積壓裂　； 參考：《斷塊油氣田》2017年04期

【摘要】：考慮到壓裂過(guò)程中的多重復(fù)合作用,將壓后頁(yè)巖儲(chǔ)層分為支撐主裂縫、縫網(wǎng)波及區(qū)與未壓裂區(qū)。考慮基巖納米孔隙中氣體吸附與解吸、Knudsen擴(kuò)散、滑脫流、黏性流,以及水壓誘導(dǎo)裂縫應(yīng)力敏感效應(yīng),建立了頁(yè)巖氣藏體積壓裂生產(chǎn)動(dòng)態(tài)模擬的物理模型和滲流數(shù)學(xué)模型。結(jié)合Galerkin有限元方法,對(duì)基質(zhì)和裂縫滲流方程進(jìn)行空間上的離散,推導(dǎo)了三角形單元有限元數(shù)值模型,給出了壓裂水平井二維滲流場(chǎng)內(nèi)、外邊界條件和水力裂縫處理方法,對(duì)時(shí)間域采用向后差分,最后順序求解裂縫和基質(zhì)壓力方程,模擬了頁(yè)巖氣藏體積壓裂水平井生產(chǎn)動(dòng)態(tài)和壓力場(chǎng)分布。該研究為頁(yè)巖氣儲(chǔ)層體積壓裂產(chǎn)能評(píng)價(jià)提供了理論模型,對(duì)于有限元法模擬雙重介質(zhì)滲流場(chǎng)和產(chǎn)能預(yù)測(cè)具有現(xiàn)實(shí)意義。
[Abstract]:Considering the multiple complex effect in fracturing process, the shale reservoir after compression is divided into supporting main fracture, fracture network sweep area and unfractured area. Considering the effect of gas adsorption and desorption Knudsen diffusion, slippage flow, viscous flow and hydraulic pressure induced fracture stress sensitivity, a physical model and a seepage mathematical model for simulation of volume fracturing production in shale gas reservoir are established. Combined with Galerkin finite element method, the matrix and fracture seepage equations are discretized in space, the triangular element finite element finite element numerical model is derived, and the internal and external boundary conditions and hydraulic fracture treatment methods are given. In the time domain, backward difference is adopted, and the fracture and matrix pressure equations are solved sequentially to simulate the production performance and pressure field distribution of the volume fracturing horizontal well in shale gas reservoir. This study provides a theoretical model for the evaluation of volume fracturing productivity of shale gas reservoir and is of practical significance for the finite element method to simulate the seepage field and productivity prediction of dual media.
【作者單位】： 西南石油大學(xué)油氣藏地質(zhì)及開(kāi)發(fā)工程國(guó)家重點(diǎn)實(shí)驗(yàn)室;中國(guó)石油塔里木油田分公司塔中油氣開(kāi)發(fā)部;
【基金】：國(guó)家自然科學(xué)基金青年科學(xué)基金項(xiàng)目“基于多尺度頁(yè)巖復(fù)雜流動(dòng)行為的動(dòng)態(tài)評(píng)價(jià)模型研究”(51404204) 國(guó)家科技重大專(zhuān)項(xiàng)“涪陵頁(yè)巖氣開(kāi)發(fā)示范工程”(2016ZX05060) 中國(guó)石油化工股份有限公司項(xiàng)目“裂縫動(dòng)態(tài)擴(kuò)展影響因素研究”(31400026-16-ZC0607-0013)
【分類(lèi)號(hào)】：TE377

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相關(guān)期刊論文 前7條

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本文編號(hào)：1805953