2023年4月18日，重(zhong)慶萬普(pu)隆能源股份(fen)公司（以(yi)下簡(jian)(jian)稱“萬普(pu)隆”）與西南油氣(qi)田公司重(zhong)慶氣(qi)礦（以(yi)下簡(jian)(jian)稱“重(zhong)慶氣(qi)礦”）全風險合作的開州區塊“老(lao)井挖(wa)潛(qian)”項(xiang)目，經過45天(tian)既定方案實施，隨著(zhu)(zhu)放噴管道天(tian)然氣(qi)被點燃，騰(teng)空躍起8米(mi)高黃色火焰(yan)持續燃燒，標志著(zhu)(zhu)停產(chan)老(lao)井成功激活(huo)。同時，象征著(zhu)(zhu)萬普(pu)隆突破(po)了頁巖(yan)氣(qi)“低、老(lao)、病、廢、長停井”挖(wa)潛(qian)復產(chan)關鍵核心技術工(gong)藝瓶頸(jing)，具有(you)重(zhong)大里程碑意義。

圖1?大天(tian)2井激活后放空管(guan)線點火(huo)實拍圖

據悉，該井(jing)是重慶(qing)氣(qi)(qi)礦部署在大天池構造北端西翼的一口(kou)常規天然氣(qi)(qi)直(zhi)井(jing)，井(jing)深(shen)4555米，于1991年11月(yue)20日完鉆，1994年9月(yue)投產，2017年7月(yue)水淹(yan)關井(jing)，累計產氣(qi)(qi)7.14億立方米。2022年酸化解堵(du)施工完成(cheng)后，采用氣(qi)(qi)舉排(pai)液復產失敗。

2023年3月，經(jing)萬(wan)普(pu)(pu)隆(long)專家綜合(he)評估，判斷此井(jing)(jing)(jing)還有產(chan)(chan)(chan)(chan)能。基(ji)于(yu)萬(wan)普(pu)(pu)隆(long)老(lao)(lao)井(jing)(jing)(jing)挖潛復產(chan)(chan)(chan)(chan)“全(quan)風險”合(he)作(zuo)模式（即(ji)(ji)由萬(wan)普(pu)(pu)隆(long)全(quan)投入承擔(dan)全(quan)部風險進行激(ji)活施工），重(zhong)慶氣(qi)(qi)(qi)礦與萬(wan)普(pu)(pu)隆(long)達成大天2井(jing)(jing)(jing)老(lao)(lao)井(jing)(jing)(jing)挖潛復產(chan)(chan)(chan)(chan)項目合(he)作(zuo)。萬(wan)普(pu)(pu)隆(long)董(dong)事長兼總裁潘軍高度重(zhong)視(shi)，立即(ji)(ji)成立專項技(ji)術專家團(tuan)隊與資深(shen)施工團(tuan)隊，親自帶隊現(xian)場踏(ta)勘，發(fa)現(xian)該(gai)井(jing)(jing)(jing)無法(fa)正(zheng)常生(sheng)(sheng)產(chan)(chan)(chan)(chan)的核心(xin)原因系地層壓(ya)力低(di)、產(chan)(chan)(chan)(chan)液(ye)量大，已實施工藝措施無法(fa)降低(di)井(jing)(jing)(jing)底壓(ya)力到(dao)一定數(shu)值與地層產(chan)(chan)(chan)(chan)生(sheng)(sheng)生(sheng)(sheng)產(chan)(chan)(chan)(chan)壓(ya)差(cha)，從(cong)而使儲層遠端氣(qi)(qi)(qi)體不能滲流到(dao)井(jing)(jing)(jing)筒造成。經(jing)過多次綜合(he)計算(suan)分析，結合(he)自主(zhu)研(yan)發(fa)“頁巖氣(qi)(qi)(qi)全(quan)生(sheng)(sheng)命周期生(sheng)(sheng)產(chan)(chan)(chan)(chan)模型(xing)”和“生(sheng)(sheng)產(chan)(chan)(chan)(chan)動態模擬及優化(hua)軟件”數(shu)據，最終確定以“氮氣(qi)(qi)(qi)氣(qi)(qi)(qi)舉+精細化(hua)泡排”技(ji)術方案，用于(yu)老(lao)(lao)井(jing)(jing)(jing)激(ji)活。

然(ran)(ran)(ran)而，該井(jing)(jing)(jing)(jing)(jing)所(suo)在區(qu)域為(wei)(wei)(wei)一人口(kou)密集的城鎮（見圖2），井(jing)(jing)(jing)(jing)(jing)場(chang)(chang)距離最近居民樓僅(jin)一墻之隔。為(wei)(wei)(wei)確保(bao)施(shi)工(gong)(gong)安(an)全(quan)和避免擾民（氣(qi)(qi)(qi)(qi)(qi)舉(ju)噪音大(da)），規定(ding)(ding)氮(dan)氣(qi)(qi)(qi)(qi)(qi)氣(qi)(qi)(qi)(qi)(qi)舉(ju)施(shi)工(gong)(gong)僅(jin)在白天(tian)(tian)(tian)進(jin)行，每天(tian)(tian)(tian)僅(jin)有(you)12個小時可用(yong)(yong)。由于該井(jing)(jing)(jing)(jing)(jing)日產液(ye)超過30方、液(ye)面恢復快等(deng)特點，綜合評估后氮(dan)氣(qi)(qi)(qi)(qi)(qi)氣(qi)(qi)(qi)(qi)(qi)舉(ju)有(you)效(xiao)作用(yong)(yong)時間不足4小時/天(tian)(tian)(tian)（見圖3），出現(xian)(xian)了成本高效(xiao)率低的問(wen)題。為(wei)(wei)(wei)解決這(zhe)一問(wen)題，專家團(tuan)隊決定(ding)(ding)采(cai)用(yong)(yong)從鄰近天(tian)(tian)(tian)東2井(jing)(jing)(jing)(jing)(jing)井(jing)(jing)(jing)(jing)(jing)場(chang)(chang)連(lian)續(xu)氮(dan)氣(qi)(qi)(qi)(qi)(qi)反(fan)(fan)(fan)(fan)(fan)輸(shu)氣(qi)(qi)(qi)(qi)(qi)舉(ju)方式(shi)替代(dai)。在施(shi)工(gong)(gong)過程中，大(da)天(tian)(tian)(tian)2井(jing)(jing)(jing)(jing)(jing)雖與(yu)天(tian)(tian)(tian)東2井(jing)(jing)(jing)(jing)(jing)臨近，卻(que)存在兩(liang)井(jing)(jing)(jing)(jing)(jing)之間管(guan)(guan)線距離較長(chang)，修建時間太久管(guan)(guan)道承壓(ya)(ya)低，井(jing)(jing)(jing)(jing)(jing)場(chang)(chang)液(ye)面恢復快等(deng)問(wen)題。為(wei)(wei)(wei)確保(bao)安(an)全(quan)，施(shi)工(gong)(gong)團(tuan)隊須(xu)待大(da)天(tian)(tian)(tian)2井(jing)(jing)(jing)(jing)(jing)套壓(ya)(ya)降至5MPa以(yi)下后，迅(xun)速(su)改(gai)造流(liu)程，快速(su)完(wan)成氣(qi)(qi)(qi)(qi)(qi)舉(ju)切(qie)換，方可實現(xian)(xian)反(fan)(fan)(fan)(fan)(fan)輸(shu)氣(qi)(qi)(qi)(qi)(qi)舉(ju)并連(lian)續(xu)氣(qi)(qi)(qi)(qi)(qi)舉(ju)要求。經(jing)過現(xian)(xian)場(chang)(chang)團(tuan)隊不懈努力(li)，連(lian)續(xu)氮(dan)氣(qi)(qi)(qi)(qi)(qi)反(fan)(fan)(fan)(fan)(fan)輸(shu)氣(qi)(qi)(qi)(qi)(qi)舉(ju)成功(gong)(gong)實現(xian)(xian)。現(xian)(xian)場(chang)(chang)壓(ya)(ya)力(li)數據反(fan)(fan)(fan)(fan)(fan)饋(kui)不斷(duan)計(ji)算，發現(xian)(xian)此(ci)(ci)(ci)井(jing)(jing)(jing)(jing)(jing)地層(ceng)能量低于預(yu)期，氮(dan)氣(qi)(qi)(qi)(qi)(qi)密度(du)大(da)導致井(jing)(jing)(jing)(jing)(jing)底壓(ya)(ya)差有(you)限，無法完(wan)全(quan)激活。初步(bu)判定(ding)(ding)由密度(du)小的天(tian)(tian)(tian)然(ran)(ran)(ran)氣(qi)(qi)(qi)(qi)(qi)進(jin)行氣(qi)(qi)(qi)(qi)(qi)舉(ju)，可以(yi)更(geng)大(da)程度(du)提高井(jing)(jing)(jing)(jing)(jing)底壓(ya)(ya)差，激活此(ci)(ci)(ci)井(jing)(jing)(jing)(jing)(jing)。專家團(tuan)隊立即調整技術(shu)方案，決定(ding)(ding)采(cai)用(yong)(yong)管(guan)(guan)道中的天(tian)(tian)(tian)然(ran)(ran)(ran)氣(qi)(qi)(qi)(qi)(qi)進(jin)行反(fan)(fan)(fan)(fan)(fan)輸(shu)氣(qi)(qi)(qi)(qi)(qi)舉(ju)。但此(ci)(ci)(ci)管(guan)(guan)道中的天(tian)(tian)(tian)然(ran)(ran)(ran)氣(qi)(qi)(qi)(qi)(qi)為(wei)(wei)(wei)高含硫天(tian)(tian)(tian)然(ran)(ran)(ran)氣(qi)(qi)(qi)(qi)(qi)（HS2），壓(ya)(ya)力(li)低（只有(you)5.2MPa），且此(ci)(ci)(ci)井(jing)(jing)(jing)(jing)(jing)深處居民區(qu)，切(qie)換點必須(xu)準(zhun)確無誤，稍有(you)不慎極(ji)易發生(sheng)重大(da)安(an)全(quan)事故。通過多次理論計(ji)算和現(xian)(xian)場(chang)(chang)安(an)全(quan)實操演練，抓(zhua)住臨界點，及時進(jin)行了天(tian)(tian)(tian)然(ran)(ran)(ran)氣(qi)(qi)(qi)(qi)(qi)反(fan)(fan)(fan)(fan)(fan)輸(shu)氣(qi)(qi)(qi)(qi)(qi)舉(ju)切(qie)換，成功(gong)(gong)地實現(xian)(xian)了天(tian)(tian)(tian)然(ran)(ran)(ran)氣(qi)(qi)(qi)(qi)(qi)反(fan)(fan)(fan)(fan)(fan)輸(shu)氣(qi)(qi)(qi)(qi)(qi)舉(ju)。

圖2?大天(tian)2井現場實拍圖

圖3大天(tian)2井先期氮氣(qi)氣(qi)舉曲線

萬普隆技術(shu)專家團隊(dui)和(he)現(xian)場(chang)施(shi)工團隊(dui)，不斷調(diao)整和(he)優化施(shi)工方案，在(zai)(zai)公司綜合(he)模擬數據分析指導和(he)增產中心員工現(xian)場(chang)精細(xi)操作下，歷經45個日夜的艱苦奮戰，終于(yu)在(zai)(zai)2023年(nian)4月(yue)18日18時將該井激活！接下來的連續25天(tian)，通過精細(xi)泡排放噴提液(ye)試驗，證實這口30多年(nian)的老井重新煥發(fa)出了絢麗光彩(cai)！

萬普隆在頁(ye)巖氣“低(di)、老(lao)、病、廢、長停(ting)井”挖潛復產(chan)行業技術工(gong)藝瓶頸方面勇攀峭(qiao)壁(bi)，再創輝煌。這是(shi)繼2022年萬普隆與重頁(ye)司(si)“全風(feng)險”合(he)作(zuo)低(di)壓低(di)效(xiao)項(xiang)目取得成功(gong)后又(you)一個關(guan)鍵(jian)核心技術工(gong)藝進步，具有重大(da)里程碑意義！通過這次成功(gong)經(jing)驗(yan)的(de)積累和基礎夯實，萬普隆為行業老(lao)井挖潛復產(chan)打開了嶄新局面，增(zeng)強(qiang)了信心。

我(wo)們(men)深知，所有(you)看似簡單事情的(de)(de)(de)背(bei)后都(dou)有(you)著不(bu)(bu)為人知的(de)(de)(de)艱辛，簡單背(bei)后的(de)(de)(de)不(bu)(bu)簡單是(shi)努力(li)過(guo)后的(de)(de)(de)水到(dao)渠成。即便我(wo)們(men)彷徨過(guo)、迷茫過(guo)，會為井中遲遲沒有(you)動靜脆弱(ruo)到(dao)垂頭喪氣，也會為放噴管線中的(de)(de)(de)熊熊烈火(huo)幼稚到(dao)熱(re)淚(lei)盈眶。但真(zhen)正的(de)(de)(de)英(ying)雄，從來(lai)都(dou)是(shi)在認清(qing)生活真(zhen)相后依然(ran)熱(re)愛它(ta)，勝不(bu)(bu)妄喜，敗不(bu)(bu)遑(huang)妥，朝著目標(biao)，步過(guo)荊棘，去開(kai)創屬于自(zi)己的(de)(de)(de)天涯。讓我(wo)們(men)向為了心中的(de)(de)(de)夢想，勇往直(zhi)前的(de)(de)(de)萬普隆英(ying)雄致(zhi)以最誠摯的(de)(de)(de)敬意！