本文關(guān)鍵詞： 水平氣井 實(shí)驗(yàn)裝置 模擬 產(chǎn)氣剖面 測(cè)試方案　出處：《西南石油大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

【摘要】：隨著我國(guó)對(duì)油氣藏的日益開采,人們已從普通性油氣藏向復(fù)雜性油氣藏的方向轉(zhuǎn)戰(zhàn),例如川東北地區(qū)普光、元壩等高含硫氣田,埋藏深,開采難度大,同時(shí)開采時(shí)可能面臨著含硫氣體危害的風(fēng)險(xiǎn)。面對(duì)這樣艱巨的挑戰(zhàn),針對(duì)特殊油氣藏的開發(fā),采用水平井工藝技術(shù)是一種有效手段,尤其是針對(duì)相對(duì)較薄的油氣儲(chǔ)層,能夠大幅度提高油氣的供給面積,進(jìn)而提高產(chǎn)量。在采用水平井工藝的同時(shí),學(xué)者們也不斷地對(duì)水平井筒附近的儲(chǔ)層滲流特性及水平井筒內(nèi)流體的流動(dòng)狀態(tài)相關(guān)理論進(jìn)行探索研究。數(shù)值模擬方法和物理模擬實(shí)驗(yàn)方法是現(xiàn)如今最常見的兩種分析手段。本論文主要從物理模擬實(shí)驗(yàn)方法對(duì)氣藏水平井產(chǎn)氣剖面進(jìn)行分析研究。在水平氣井的開采過程中,準(zhǔn)確掌握儲(chǔ)層滲透率、井筒沿程壓降及鉆完井參數(shù)等數(shù)據(jù)對(duì)產(chǎn)氣剖面的影響,對(duì)氣藏水平井產(chǎn)量,開采方式的合理選擇、生產(chǎn)過程的動(dòng)態(tài)分析等方面有著重要意義。從氣藏水平井產(chǎn)能相關(guān)理論分析,只要儲(chǔ)層有滲透率能給井筒提供產(chǎn)量,但事實(shí)是否真的如此,氣藏的Ⅲ類、Ⅳ類儲(chǔ)層的滲透率非常小,特別是滲透率小于0.001mD的Ⅳ類儲(chǔ)層是否能夠給水平井筒供氣,供氣能力如何不得而知;所建立的氣藏滲流模型是否與水平井筒近井地帶儲(chǔ)層流動(dòng)特性相一致也不得而知,因此需要研發(fā)相關(guān)的物理模擬實(shí)驗(yàn)裝置通過實(shí)驗(yàn)的方法對(duì)其進(jìn)行驗(yàn)證。對(duì)于高含硫氣藏來說,通過模擬的實(shí)驗(yàn)裝置用空氣代替高含硫氣體進(jìn)行實(shí)驗(yàn),避免人員與硫直接接觸,對(duì)人身安全也是一種保障。對(duì)比購(gòu)買整套的實(shí)驗(yàn)裝置,通過自行研制裝置同樣能夠解產(chǎn)氣剖面的相關(guān)問題,而且價(jià)格更加便宜,能夠有效降低研發(fā)成本。綜上所述,這些都是本論文研究氣藏水平井產(chǎn)氣剖面實(shí)驗(yàn)裝置的意義所在。本論文的創(chuàng)新點(diǎn):能夠模擬地層的均質(zhì)性、非均質(zhì)性,可以模擬水平井有限導(dǎo)流或無(wú)限導(dǎo)流狀態(tài);可以根據(jù)某一特定的氣藏儲(chǔ)層情況,通過更換不同滲透率巖心或者對(duì)巖心串聯(lián)等效出新的滲透率巖心、更換不同實(shí)驗(yàn)裝置管徑大小來進(jìn)行模擬。
[Abstract]:With the increasing exploitation of oil and gas reservoirs in China, people have turned from ordinary oil and gas reservoirs to complex ones, such as Puguang gas fields with high sulfur content in northeast Sichuan, Yuanba gas fields with high sulfur content, which are buried deep and difficult to exploit. At the same time, it may be faced with the risk of sulfur gas hazards. In the face of such a difficult challenge, the use of horizontal well technology is an effective means for the development of special oil and gas reservoirs. Especially for the relatively thin oil and gas reservoir, it can greatly increase the supply area of oil and gas, and then improve the production. Scholars have also been exploring and studying the percolation characteristics of reservoir near horizontal wellbore and the theory of fluid flow in horizontal wellbore. Numerical simulation method and physical simulation experiment method are the two most common methods nowadays. In this paper, the gas production profile of horizontal well in gas reservoir is analyzed and studied from the physical simulation experiment method, and in the production process of horizontal gas well. The influence of reservoir permeability, wellbore pressure drop and drilling and completion parameters on gas production profile is accurately grasped, and the reasonable selection of gas reservoir horizontal well production and production mode is also given. From the theoretical analysis of the productivity of horizontal wells in gas reservoirs, as long as the reservoir has permeability to provide production to the wellbore, but the fact is that this is the case, the gas reservoir type III. The permeability of type 鈪，

本文編號(hào)：1458625