【摘要】：哈拉哈塘油田南部區(qū)塊原油含蠟量高,生產(chǎn)過(guò)程中井筒頻繁堵塞,嚴(yán)重影響正常生產(chǎn)。分析了井筒堵塞物成分,主要以微晶蠟堵塞為主;合成了15種共聚物,評(píng)價(jià)了合成物的降凝和降黏效果,優(yōu)選出效果較好的SDA-1降凝劑,使原油凝點(diǎn)降低28℃,0℃時(shí)原油降黏率為80%;偏光顯微結(jié)果表明,加劑后原油蠟晶明顯變小,SDA-1抑制了蠟晶生長(zhǎng);高溫高壓井筒模擬研究結(jié)果表明,加入1 000 mg/L SDA-1降凝劑后,井筒舉升壓差由1.37 kPa降低至0.67 kPa,有效抑制了蠟晶析出,SDA-1具有良好應(yīng)用前景。
[Abstract]:The wax content of crude oil in the southern block of Harahatang Oilfield is high, and the wellbore is blocked frequently in the production process, which seriously affects the normal production. The composition of wellbore blockage was analyzed, mainly microcrystal wax blockage, 15 kinds of polymers were synthesized, the anticoagulant and viscosity reducing effect of the compound were evaluated, and the SDA-1 pour point depressant with good effect was selected, which reduced the freezing point of crude oil by 28 鈩，

本文編號(hào)：2518585