文章(zhang)來源(yuan):中國石油天(tian)然(ran)氣集團公司(si) 發布時(shi)間:2018-06-28
截(jie)至6月26日,中國石油長慶油田采氣四廠負責開發的(de)蘇中氣田,通(tong)過實施(shi)不同形(xing)式的(de)排(pai)水采氣技術,使(shi)千余口程度(du)不同的(de)水淹(yan)井(jing),累(lei)計增產天然氣達1.43億立方米,相當于新投23口氣井(jing)一年的(de)生(sheng)產能(neng)力。
蘇里格(ge)氣(qi)(qi)(qi)(qi)(qi)(qi)田(tian)(tian)屬典型(xing)的(de)(de)“三低”氣(qi)(qi)(qi)(qi)(qi)(qi)田(tian)(tian),氣(qi)(qi)(qi)(qi)(qi)(qi)井(jing)(jing)(jing)(jing)產(chan)能(neng)的(de)(de)快(kuai)速(su)遞減會造成(cheng)氣(qi)(qi)(qi)(qi)(qi)(qi)井(jing)(jing)(jing)(jing)挾液(ye)能(neng)力持續下降(jiang),井(jing)(jing)(jing)(jing)筒積(ji)液(ye)氣(qi)(qi)(qi)(qi)(qi)(qi)井(jing)(jing)(jing)(jing)不(bu)斷(duan)增多。目前,蘇中氣(qi)(qi)(qi)(qi)(qi)(qi)田(tian)(tian)有(you)積(ji)液(ye)的(de)(de)氣(qi)(qi)(qi)(qi)(qi)(qi)井(jing)(jing)(jing)(jing)達1182口。氣(qi)(qi)(qi)(qi)(qi)(qi)井(jing)(jing)(jing)(jing)井(jing)(jing)(jing)(jing)筒積(ji)液(ye)后,會導(dao)致氣(qi)(qi)(qi)(qi)(qi)(qi)井(jing)(jing)(jing)(jing)日產(chan)量(liang)大幅下降(jiang)。因而(er),積(ji)液(ye)氣(qi)(qi)(qi)(qi)(qi)(qi)井(jing)(jing)(jing)(jing)治理(li)效果,直接影響氣(qi)(qi)(qi)(qi)(qi)(qi)田(tian)(tian)的(de)(de)產(chan)量(liang)和效益(yi)。采(cai)(cai)取高(gao)效實用(yong)(yong)的(de)(de)排(pai)水(shui)(shui)采(cai)(cai)氣(qi)(qi)(qi)(qi)(qi)(qi)工藝(yi)(yi)技(ji)(ji)術手(shou)段(duan),是(shi)提高(gao)單(dan)井(jing)(jing)(jing)(jing)采(cai)(cai)收率、延長氣(qi)(qi)(qi)(qi)(qi)(qi)田(tian)(tian)穩產(chan)期、實現(xian)蘇里格(ge)氣(qi)(qi)(qi)(qi)(qi)(qi)田(tian)(tian)規模、經(jing)濟(ji)、有(you)效開發(fa)的(de)(de)關鍵(jian)所在。經(jing)過(guo)近7年(nian)的(de)(de)不(bu)斷(duan)摸索和試驗,采(cai)(cai)氣(qi)(qi)(qi)(qi)(qi)(qi)四(si)廠通過(guo)采(cai)(cai)用(yong)(yong)泡沫排(pai)水(shui)(shui)、速(su)度管柱(zhu)、柱(zhu)塞氣(qi)(qi)(qi)(qi)(qi)(qi)舉(ju)(ju)、同步回轉增壓氣(qi)(qi)(qi)(qi)(qi)(qi)舉(ju)(ju)、井(jing)(jing)(jing)(jing)間互(hu)聯氣(qi)(qi)(qi)(qi)(qi)(qi)舉(ju)(ju)、氮氣(qi)(qi)(qi)(qi)(qi)(qi)氣(qi)(qi)(qi)(qi)(qi)(qi)舉(ju)(ju)6項(xiang)排(pai)水(shui)(shui)采(cai)(cai)氣(qi)(qi)(qi)(qi)(qi)(qi)主體工藝(yi)(yi)技(ji)(ji)術,綜合應用(yong)(yong)化學原理(li)、物理(li)方法(fa)、機械手(shou)段(duan)等多種方式(shi),逐步形成(cheng)了(le)具有(you)蘇里格(ge)特色的(de)(de)排(pai)水(shui)(shui)采(cai)(cai)氣(qi)(qi)(qi)(qi)(qi)(qi)配套工藝(yi)(yi)技(ji)(ji)術系列,為氣(qi)(qi)(qi)(qi)(qi)(qi)田(tian)(tian)穩產(chan)探索出一條可行的(de)(de)技(ji)(ji)術途徑(jing)。
今年年初以來,采氣(qi)(qi)四廠(chang)把全(quan)(quan)年37.5億立方(fang)米產(chan)量(liang)任務作為工作重心,以提(ti)高低產(chan)、低效(xiao)氣(qi)(qi)井管(guan)理(li)水(shui)平(ping)為抓手,緊緊圍繞全(quan)(quan)年排水(shui)采氣(qi)(qi)2.7億立方(fang)米增產(chan)目標,周(zhou)密部(bu)署、科(ke)學組織、不(bu)斷深入(ru)加(jia)大排水(shui)采氣(qi)(qi)新工藝(yi)、新技術(shu)在現場(chang)的應用(yong)力度,為氣(qi)(qi)田穩(wen)產(chan)提(ti)供了強力支撐。
為(wei)保(bao)證排(pai)(pai)(pai)(pai)水(shui)(shui)采(cai)氣(qi)(qi)(qi)措(cuo)施(shi)(shi)的(de)有效(xiao)(xiao)落(luo)實(shi),著眼于“泡(pao)沫(mo)(mo)排(pai)(pai)(pai)(pai)水(shui)(shui)采(cai)氣(qi)(qi)(qi)為(wei)主(zhu),多種排(pai)(pai)(pai)(pai)水(shui)(shui)采(cai)氣(qi)(qi)(qi)措(cuo)施(shi)(shi)并舉(ju)”的(de)工(gong)作(zuo)思路,采(cai)氣(qi)(qi)(qi)四(si)(si)廠(chang)制(zhi)定了(le)“每天及時(shi)跟蹤、每周定時(shi)分(fen)析(xi)、每月(yue)系統總(zong)結”的(de)工(gong)作(zuo)制(zhi)度,并形成了(le)氣(qi)(qi)(qi)井(jing)(jing)(jing)“泡(pao)沫(mo)(mo)排(pai)(pai)(pai)(pai)水(shui)(shui)分(fen)期分(fen)類(lei)”和新(xin)工(gong)藝試驗“一(yi)類(lei)一(yi)法一(yi)工(gong)藝”的(de)個(ge)性化(hua)管理模式,根據氣(qi)(qi)(qi)井(jing)(jing)(jing)不同(tong)生產規律和積(ji)液(ye)(ye)情(qing)況(kuang),制(zhi)定不同(tong)類(lei)型氣(qi)(qi)(qi)井(jing)(jing)(jing)排(pai)(pai)(pai)(pai)水(shui)(shui)采(cai)氣(qi)(qi)(qi)工(gong)藝的(de)差異(yi)化(hua)措(cuo)施(shi)(shi)。同(tong)時(shi),結合排(pai)(pai)(pai)(pai)水(shui)(shui)采(cai)氣(qi)(qi)(qi)實(shi)施(shi)(shi)效(xiao)(xiao)果,階段(duan)性開展單井(jing)(jing)(jing)增產氣(qi)(qi)(qi)量、套(tao)壓(ya)波動趨(qu)勢、區(qu)域產液(ye)(ye)量變化(hua)等情(qing)況(kuang)分(fen)析(xi),及時(shi)掌握每一(yi)口氣(qi)(qi)(qi)井(jing)(jing)(jing)生產動態,及時(shi)優化(hua)調(diao)整(zheng)氣(qi)(qi)(qi)井(jing)(jing)(jing)排(pai)(pai)(pai)(pai)水(shui)(shui)采(cai)氣(qi)(qi)(qi)工(gong)作(zuo)制(zhi)度,氣(qi)(qi)(qi)井(jing)(jing)(jing)平均(jun)油套(tao)壓(ya)差明顯降低(di),天然氣(qi)(qi)(qi)增產效(xiao)(xiao)果明顯。今(jin)年(nian)年(nian)初以來,采(cai)氣(qi)(qi)(qi)四(si)(si)廠(chang)積(ji)液(ye)(ye)井(jing)(jing)(jing)排(pai)(pai)(pai)(pai)水(shui)(shui)采(cai)氣(qi)(qi)(qi)見效(xiao)(xiao)率達(da)90%以上,同(tong)比提(ti)高(gao)了(le)10多個(ge)百分(fen)點,見效(xiao)(xiao)最好的(de)單井(jing)(jing)(jing),日增氣(qi)(qi)(qi)達(da)到3萬(wan)立方米。
截至(zhi)目前,采(cai)氣(qi)(qi)四廠今年已實(shi)施泡沫排水(shui)采(cai)氣(qi)(qi)4868井次,開(kai)展(zhan)新工藝(yi)排水(shui)采(cai)氣(qi)(qi)試驗(yan)252井次,為夏(xia)季氣(qi)(qi)井生(sheng)產管理提供(gong)了保障(zhang),為全(quan)年天然氣(qi)(qi)生(sheng)產任(ren)務的順利(li)完成奠(dian)定了基礎(chu)。