興隆臺(tái)潛山油藏注氣開發(fā)工程方案研究
本文選題:潛山油藏 + 工程方案; 參考:《東北石油大學(xué)》2017年碩士論文
【摘要】:興隆臺(tái)潛山油藏是一個(gè)典型的塊狀裂縫油藏,油層發(fā)育良、原油性質(zhì)優(yōu)。該油藏開發(fā)初期自噴生產(chǎn)效果較好,后期地層能量逐漸下降。潛山油藏僅依靠天然能量開發(fā),由于地層壓力下降、產(chǎn)量遞減加快,并且還存在底水錐進(jìn)現(xiàn)象,注水見效不明顯。為了迅速補(bǔ)充地層壓力,大幅度提高油藏采收率,實(shí)現(xiàn)原油穩(wěn)產(chǎn)的目標(biāo),在潛山油藏實(shí)施注氣開發(fā)。結(jié)合潛山油藏注氣開發(fā)油藏方案和相關(guān)規(guī)范,本文開展?jié)撋接筒刈忾_發(fā)工程方案的研究。本文根據(jù)前期開展注氮?dú)夂秃笃陂_展注天然氣不同階段要求,進(jìn)行注、采工程兩個(gè)方面設(shè)計(jì)研究。從井口壓力的計(jì)算、油管尺寸的選擇、材質(zhì)的選擇和油管強(qiáng)度校核等方面進(jìn)行了油管優(yōu)化,確定注氣油管;根據(jù)管柱要實(shí)現(xiàn)的功能確定相應(yīng)的配套工具;根據(jù)油藏方案提供的天然氣注入量和井底流壓,參考?xì)怏w流動(dòng)能量方程、地層平均溫度和壓縮系數(shù)公式,計(jì)算出井口注氣壓力,選擇合適的壓力等級(jí)井口裝置實(shí)施注氣作業(yè)。注氮?dú)膺^渡階段氣舉誘噴采油設(shè)計(jì)時(shí)根據(jù)生產(chǎn)井情況確定管柱結(jié)構(gòu)和下深;注天然氣階段未受效井實(shí)施氣舉采油設(shè)計(jì)時(shí),采取建立連續(xù)氣舉井筒模型,計(jì)算出產(chǎn)液量,優(yōu)化氣舉壓力范圍,確定氣舉閥工作壓力。再根據(jù)注氣情況提出了HSE相關(guān)要求,以確保施工安全。
[Abstract]:Xinglongtai buried hill reservoir is a typical block fracture reservoir with well-developed reservoirs and excellent crude oil properties. In the early stage of development, the production effect of self-injection is better, and the formation energy decreases gradually in the later stage. The buried hill reservoir only depends on the natural energy development, because the formation pressure drops, the production decreases speed up, and there is the bottom water coning in phenomenon, the water injection effect is not obvious. In order to quickly replenish formation pressure, improve oil recovery and achieve the goal of stable crude oil production, gas injection development is carried out in buried hill reservoir. Combined with the gas injection development scheme and related specifications of buried hill reservoir, the project of gas injection development in buried hill reservoir is studied in this paper. According to the requirements of different stages of nitrogen injection and natural gas injection in the early stage and natural gas injection stage, the design and research of injection and production engineering are carried out in this paper. From the aspects of wellhead pressure calculation, tubing size selection, material selection and tubing strength check, the tubing is optimized to determine the gas injection tubing, and the corresponding matching tools are determined according to the functions to be realized by the tubing string. According to the natural gas injection rate and bottom hole flow pressure provided by the reservoir scheme, the gas flow energy equation, the average formation temperature and the compression coefficient formula, the wellhead gas injection pressure is calculated, and the appropriate pressure grade wellhead device is selected to carry out the gas injection operation. The structure and depth of pipe string are determined according to the conditions of production wells in the design of gas lift induced oil production in the transitional stage of nitrogen injection, and the continuous gas lift wellbore model is established to calculate the amount of liquid produced when the gas lift oil recovery design is carried out in the stage of natural gas injection. Optimize the gas lift pressure range and determine the working pressure of the gas lift valve. According to the gas injection situation, HSE related requirements are put forward to ensure construction safety.
【學(xué)位授予單位】:東北石油大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2017
【分類號(hào)】:TE357.7
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