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關(guān)鍵詞:定向鉆;等級公路;全自動解鎖;全套管;半套管
中圖分類號:TE832 文獻(xiàn)標(biāo)志碼:A 文章編號:2095-2945(2024)29-0038-05
Abstract: According to the JTG D20—2017 "Design Specification for Highway Alignment", "when the oil and gas transportation pipeline intersects with all levels of highway and adopts the underpass mode, the underground passage(culvert) or casing should be set up." There are two traditional technologies of directional drilling through grade highway: full casing and semi-casing. The construction cost is high and difficult, especially in large diameter thick-walled pipes. In order to effectively reduce the construction cost and difficulty, a fully automatic unlocking device for pipeline directional drilling through grade highway is designed based on the practice of natural gas engineering, and the length of the casing only extends to 2~5 meters on the outer edge of the road, which is the first. It is suitable not only for oil and gas pipeline projects, but also for other municipal pipeline projects, with high economic benefits and promotion value.
Keywords: directional drilling; grade highway; automatic unlocking; full casing; semi-casing
經(jīng)過多年持續(xù)快速發(fā)展,管道運(yùn)輸已成為石油、天然氣等液體和氣體能源的首選輸送方式,與鐵路、公路、水運(yùn)和航空運(yùn)輸并列為我國五大運(yùn)輸方式[1]。
2017年,國家發(fā)展改革委、國家能源局共同印發(fā)《中長期油氣管網(wǎng)規(guī)劃》,指出今后10~15年仍將是油氣管道建設(shè)的高峰期。預(yù)計到2030年,我國油氣管道總里程將達(dá)到25~30萬km,基本建成現(xiàn)代油氣管網(wǎng)體系[2]。
有數(shù)據(jù)顯示,我國70%以上的油氣管道需穿越公路。2015年交通運(yùn)輸部、國家能源局、國家安全監(jiān)管總局聯(lián)合發(fā)布《關(guān)于規(guī)范公路橋梁與石油天然氣管道交叉工程管理的通知》,明確規(guī)定新建或改建油氣管道需要穿(跨)越既有公路的,宜選擇在非橋梁結(jié)構(gòu)的公路路基地段,采用埋設(shè)方式從路基下方穿越通過,或采用架設(shè)方式從公路上方跨越通過。并且油氣管道穿(跨)越公路前應(yīng)委托具有資質(zhì)的單位進(jìn)行安全技術(shù)評價,出具評價報告。……