I-Oilfield Chemical Additives Application Cases

Ngo-2022, phambi kwempembelelo yobhubhani we-COVID-19, iZiko loLawulo lokuQeda i-Oilfield Well Completion yaseNorthwest yagqiba iiprojekthi ezingama-24, kubandakanywa izixhobo zokulawula umthombo we-oyile kunye nokucocwa kombhobho we-oyile onzima, ukonga iindleko zokuthengwa kwe-13.683 yezigidi zeeyuan.

Ngexesha lokusetyenziswa kwemibhobho yeoli, ububanzi bombhobho buba buncinci kakhulu ngenxa yeempembelelo ze-wax, iipolymers, kunye neetyuwa, ukunciphisa ukuhamba kweoli ekrwada kunye nokuchaphazela imveliso yeoli ekrwada. Ke ngoko, iinkampani zokomba zicoca imibhobho kanye ngonyaka. Emva kokunyanga i-weld seams yamalungu ombhobho, kuyimfuneko ukucoca imibhobho.

Kwiimeko eziqhelekileyo, imibhobho yentsimbi esetyenziswa njengemibhobho yeoli inomhlwa kwindawo yangaphakathi nangaphandle. Ukuba ayicocwanga, oku kuya kungcolisa ioli ye-hydraulic emva kokusetyenziswa, echaphazela ukusebenza okuqhelekileyo kwezixhobo ze-hydraulic. Ngoko ke, kuyimfuneko ukususa i-rust kwindawo yangaphakathi yemibhobho ngokuhlamba i-asidi. Ukuhlamba i-asidi kunokususa i-rust kwindawo yangaphandle yemibhobho, enenzuzo ekusebenziseni ipeyinti echasene ne-rust kumphezulu wangaphandle wemibhobho, enika ukhuseleko oluhlala ixesha elide lokulwa ne-corrosion. Ukuhlamba i-asidi ngokuqhelekileyo kwenziwa ngokusebenzisa isisombululo se-asidi kunye noxinzelelo lwe-0% ukuya kwi-15%. Inkampani ye-Youzhu, ngokubonelela ngeemveliso ze-corrosion inhibitor: UZ CI-180, iqondo lobushushu eliphakamileyo elimelana ne-acidizing inhibitor ye-oilfield. Kwinkqubo ye-acidizing okanye i-pickling, i-asidi iya kutshabalalisa intsimbi, kwaye kwiqondo lokushisa eliphezulu, izinga kunye noluhlu lwe-corrosion luya kwandiswa kakhulu, ngoko ke, kwimveliso ye-oilfield, ukuthintela ukubola kombhobho ophezulu wokushisa kubaluleke kakhulu. engahambelani kuphela neenzuzo zokuxhaphaza i-oilfield, kodwa inxulumene ngokusondeleyo nokhuseleko lwemveliso. Iqondo lokukhukuliseka kwe-asidi kwimibhobho kunye nezixhobo kuxhomekeke kwixesha loqhagamshelwano, ukugxilwa kwe-asidi kunye neemeko zobushushu, njl njl. I-UZ CI-180 inokumelana nobushushu obuphezulu, kwaye kumaqondo obushushu ukuya kwi-350 ° F (180 ° C), i-corrosion. Umphumo we-asidi kwintsimbi kwiqondo lokushisa eliphezulu phantsi kwequla lingancitshiswa kakhulu ngokungeza i-UZ CI-180 kumxube we-asidi. I-Youzhu ifumene ukuqatshelwa okuphezulu kwi-Northwest Oilfield Management Centre kwiiprojekthi zayo zokucoca imibhobho, ukubunjwa kolwelo lwe-drilling, kunye nokugcinwa kwezixhobo.

Ifumaneka kwi-Dong San Road kwisiXeko sase-Dongying, i-Fengye 1-10HF liqula lokuqala le-oyile ye-shale ethe tye ukutyhutyha umqobo womjikelo wokugrumba weentsuku ezingama-20, ugqibezela iintsuku ezingama-24 ngaphambi kweshedyuli. Ngomnye wemimandla emithathu yesizwe yokubonisa i-oli ye-shale evunywe luLawulo lweSizwe lwezaMandla kunye nelizwe lokuqala lomboniso lwezowuni yelizwekazi le-oyile ye-shale e-China. Ngokugqiba iqula kwiintsuku ezingama-24 phambi kweshedyuli, ngaphezulu kwe-10 yezigidi zeeyuan zongiwe kwiindleko.

Ngenxa yokuba kufutshane nomthombo okufutshane owaphukileyo kumgama nje weemitha ezingama-400 kunye nokuba kufutshane komda welitye legrabile, i-Fengye 1-10HF ijongene kakuhle nemingcipheko yokungena kwamanzi, ukuphuphuma, kunye nokulahleka kolwelo. Ukongeza, amaqondo obushushu aphezulu emazantsi omthombo abangele imicelimngeni kwizixhobo ezahlukeneyo. Iqela leprojekthi ligxile kwinkxaso yobuchwephesha bobunjineli kunye nokujongana nemiba ephambili yethekhinoloji. Baye basombulula ngokulandelelana imiqobo efana nobunzima bokuxela kwangaphambili i-heterogeneity emnandi yamabala amnandi, imida yezixhobo eziphantsi kwamaqondo obushushu aphezulu kunye noxinzelelo, kunye nokuhlalisana kokugrumba ukulahleka kolwelo kunye nokuthontelana.

Baphuhlise kwaye basebenzise inkqubo yodaka esekwe kwi-synthetic ukuphucula ukumanzi. Phakathi kwezi, isongezelelo solwelo sangoku sokomba iTF FL WH-1 Cement Fluid-loss Additives, ephuhliswe nguYouzhu inokwenza ifilimu ekumgangatho ophezulu kumphezulu womthombo we-shale, ukuthintela ukuhluza ukugrumba ekungeneni ekubunjweni, TF FL WH- I-1 yenzelwe ukusetyenziswa kwimithombo eneqondo lokushisa elisezantsi elijikelezayo (BHCTs) kwi-60℉ (15.6 ℃) ukuya kwi-400℉ (204℃).

I-TF FL WH-1 inikezela nge-API yokulawula ukulahleka kwamanzi ngaphantsi kwe-36cc / 30min ngelixa ilawula ukufuduka kwegesi ukusuka ekubunjweni. Ngokubanzi i-0.6% ukuya kwi-2.0% ye-BWOC iyafuneka kuninzi lwe-slurries. Idla ngokusetyenziswa kwidosi engaphantsi kwe-0.8% BWNgoko ikhusela indawo yokugcina amanzi kunye nokuzinzisa umthombo. Oku kutywinwa ngokufanelekileyo i-shale pores kunye ne-microfractures, ukuthintela i-filtrate yokubhola i-fluid ekuhlaseleni kunye nokunciphisa ukuhanjiswa koxinzelelo lwe-pore, ukunyusa kakhulu ukuvinjelwa kwe-drilling fluid.

Iziphumo zesicelo sentsimi zibonisa ukuba i-high-performance water-based-drilling fluid inhibitive kakhulu, inyusa isantya sokugaya oomatshini, izinzile kumaqondo aphezulu okushisa, ikhusela i-reservoir, kwaye ihambelana nokusingqongileyo.

NgoFebruwari ka-2022, iSinopec's Bazhong 1HF kakuhle, ibekwe kumjelo we-oyile yelitye lentlabathi yomlambo iJurassic kunye novimba werhasi, yandulula ngokuyilayo "ifracturing, imbibition, kunye nokuvala-in kakuhle indibaniselwano" fracturing design concept. Le ndlela yaphuhliswa ukujongana neempawu zamadama amatye entlabathi omlambo ashinyeneyo kunye noxinzelelo oluphezulu lwe-coefficients. Itekhnoloji yefracturing ephuculweyo, ebandakanya "ukusika okuqinileyo + ukuplaga okwethutyana kunye nokuphambuka + ukongezwa kwesanti ephezulu kakhulu + ukuphuculwa kweoyile ye-imbibition," iphucule kakhulu umthamo wokuhamba kwe-oyile ephantsi komhlaba kunye negesi kwaye yaseka imodeli entsha yokuqhekeka, ibonelela ngereferensi enkulu- ukuqhekezwa komlinganiselo wamaqula axwesileyo.

I-Youzhuo ye-high-temperature fluid loss additive additive, i-high-temperature anti-collapse plugging agent, kunye ne-high-temperature flow type regulator kwi-fracturing fluid yoyisa uxinzelelo kunye nemingeni yokulahlekelwa kwamanzi okubangelwa ukubunjwa koxinzelelo lwe-pore, uxinzelelo lwe-wellbore, kunye namandla amatye. Itekhnoloji ekhethekileyo ye-gel plugging, evela kwiYunivesithi yaseSouthwest Petroleum, ivumela ijeli ekhethekileyo ukuba iyeke ngokuzenzekelayo ukuhamba emva kokungena kwilahleko yokulahleka, ukuzalisa iifractures kunye nezithuba ezingenanto, zenze "iplagi yejeli" eyahlula ulwelo lwangaphakathi kwi-wellbore fluid. Obu buchwephesha busebenza kakhulu ekuvuzeni okuqatha kulwakhiwo oluqhekekileyo, olunezingxobo, kunye nolwaphukileyo olunokulahleka okubalulekileyo kolwelo kunye nemithamo encinci yokubuya.

NgoMeyi 30, 2023, ngo-11:46 AM, iTarim Oilfield yaseChina National Petroleum Corporation (CNPC) yaqalisa ukugrumba kwiqula laseShendi Teke 1, ebonisa ukuqala kohambo lokuphonononga i-ultra-deep geological and engineering sciences kubunzulu obufikelelayo. 10,000 yeemitha. Oku kuphawula umzuzu oyimbali kubunjineli bomhlaba obunzulu baseTshayina, obonisa impumelelo enkulu kwitekhnoloji yokuhlola umhlaba onzulu welizwe kunye nokuqala "kwexesha leemitha ezili-10,000" kwizakhono zokomba.

Iqula leShendi Teke 1 libekwe kwiNqila yaseShaya, kwisithili saseAksu, eXinjiang, kwintliziyo yeNtlango yaseTaklamakan. Kubaluleke kakhulu "iprojekthi yomhlaba enzulu" yi-CNPC kwiTarim Oilfield, ekufuphi ne-Fuman ultra-deep oil and gas area, enobunzulu be-8,000 yeemitha kunye nokugcinwa kweetoni zebhiliyoni enye. Iqula linobunzulu obuyilwe obuziimitha ezili-11,100 kunye nexesha lokomba elicwangcisiweyo kunye nokugqiba iintsuku ezingama-457. Ngomhla wesi-4 kuMatshi ka-2024, ubunzulu bokomba be-Shendi Teke 1 budlule kwi-10,000 yeemitha, nto leyo eyenza ibe liqula lesibini lehlabathi elithe nkqo e-Asia ukugqitha obu bunzulu. Esi siganeko sibalulekileyo sibonisa ukuba i-China yoyise ngokuzimeleyo imingeni yobugcisa enxulumene nokugrumba amaqula anzulu kakhulu ngolu hlobo.

Ukugrumba kubunzulu beemitha ezili-10,000 lelinye lawona mazwe acela umngeni kubuchwephesha bobunjineli be-oyile negesi, enemiqobo emininzi yobugcisa. Ikwaluphawu oluphambili lobuchwephesha bobunjineli belizwe kunye nobuchule bezixhobo. Ukujongana nobushushu obugqithisileyo obusezantsi kunye neemeko zoxinzelelo, ukuqhubela phambili okubalulekileyo kwenziwa kulwelo olunobushushu obuphezulu, iimotor ezikwaziyo ukumelana nobushushu obuphezulu, kunye nobuchwephesha bokwemba umkhombandlela. Ukuphumelela kwaphunyezwa kwisampulu engundoqo kunye nezixhobo zokugawulwa kwentambo, iilori ze-ultra-high-high-pressure fracturing ezinomthamo we-175 MPa, kunye nezixhobo ze-fracturing fluid, eziye zavavanywa ngempumelelo kwindawo. Olu phuhliso lukhokelele ekudalweni kweetekhnoloji ezininzi ezibalulekileyo zokugrumba okukhuselekileyo nokusebenzayo kunye nokugqitywa kwamaqula anzulu kakhulu.

Kwinkqubo ye-drilling fluid esetyenziswe kule projekthi, ubushushu obuthile obuphezulu, i-high-pressure bumes yaqwalaselwa kunye nophuhliso lokunciphisa ilahleko yolwelo oluphezulu kunye ne-corrosion inhibitors ezigcina iimpawu ezibalaseleyo ze-rheological phantsi kobushushu obuphezulu kwaye kulula ukulungelelanisa nokugcina. Izongezo zokulawula udongwe ziphinde zaphucula amandla okukhupha amanzi kwiincinci zodongwe phantsi kweemeko zeqondo lokushisa eliphezulu, ukuphucula ukulungelelaniswa kunye nokuzinza kwe-drilling fluid.

I-Jimusar ioli ye-shale yindawo yokuqala yelizwe yaseTshayina yokubonisa i-oyile ye-terrestrial shale, efumaneka kwimpuma ye-Junggar Basin. Ithatha indawo ye-1,278 square kilometers kwaye inovimba wobutyebi oqikelelwa kwi-1.112 yeebhiliyoni zeetoni. Kwi-2018, uphuhliso olukhulu lweoli ye-Jimusar shale yaqala. Kwikota yokuqala, i-Xinjiang Jimusar National Terrestrial Shale Demonstration Zone yavelisa iitoni ze-315,000 zeoli ye-shale, ibeka irekhodi elitsha lembali. Indawo yokubonisa ikhawulezisa iinzame zokwandisa ugcino lwe-oyile ye-shale kunye nemveliso, ngezicwangciso zokugqiba imingxuma yokugrumba i-100 kunye ne-110 yemithombo ye-fracturing ngo-2024.

I-oyile ye-Shale, i-oyile edityaniswe kwi-shale rock okanye ngaphakathi kweentanda zayo, yenye yezona ntlobo zeoli enzima kakhulu ukuyikhupha. I-Xinjiang inobutyebi be-oyile ye-shale etyebileyo enethemba elibanzi lokuphononongwa kunye nophuhliso. I-China ichonge imithombo ye-oyile ye-shale njengendawo ephambili yokutshintshwa kwe-oyile kwixesha elizayo. UWu Chengmei, injineli yesibini kwiZiko loPhando lweGeological of Jiqing Oilfield Operations Area eXinjiang Oilfield, uchaza ukuba i-Jimusar shale oil idla ngokungcwatywa ngaphezulu kwe-3,800 yeemitha ngaphantsi komhlaba. Ukungcwatywa okunzulu kunye nokungena kancinci kancinci kwenza ukutsalwa kube ngumngeni njengokukhupha ioyile kwiwhetstone.

Uphuhliso lweoli ye-oyile yase-China ye-terrestrial shale ngokubanzi ijongene nemingeni emine emikhulu: okokuqala, ioli inzima kakhulu, ibangela ukuba kube nzima ukuhamba; okwesibini, amabala amnandi amancinci kwaye kunzima ukuqikelela; okwesithathu, umxholo wodongwe ophezulu wenza kube nzima ukuqhekeza; okwesine, ukuhanjiswa akuhambelani, imisebenzi enzima. Ezi zinto kudala zithintela uphuhliso olukhulu nolusebenzayo lwe-oyile ye-terrestrial shale e-China. Kwiprojekthi, ukunyanga i-fracturing flowback fluid, isongezelelo esitsha sisetyenziselwa ukunciphisa ungcoliseko kunye nokuphinda kusetyenziswe ulwelo, ukulubuyisela kulwelo oluqhekezayo ukuze luphinde lusetyenziswe. Le ndlela yavavanywa kumaqula alithoba ngo-2023 ngeziphumo ezigqwesileyo. Ukususela ngoJuni ka-2024, iprojekthi iceba ukusebenzisa i-fracturing fluid ehlaziyiweyo kwi-fracturing operation enkulu.

Ukwakhiwa okuphambili kweprojekthi kuqulethe i-coal seams, i-gray and brown mudstone sections, eziziindlela ezithintela amanzi. Kwibhloko yeoli ye-Jimusar shale, icandelo elivulekileyo lequla lesibini lide, kwaye ixesha lokubunjwa lokubunjwa liyandiswa. Ukuba udaka olusekelwe emanzini lusetyenzisiweyo, ukuwa kunye nokungazinzi kunokwenzeka, kodwa i-oyile-based drilling fluids ayibangeli iziphumo ze-hydration. I-oil-in-water emulsion drilling fluids, xa izinzile, nayo ayibangeli iziphumo ze-hydration, ngoko ke i-oyile-based drilling fluids ayidali uxinzelelo lokudumba kwe-hydration. Uphando luye lwakhokelela ekwamkelweni kwenkqubo yodaka olusekelwe kwi-oyile, kunye nemigaqo yokuchasana nokuwa kunye nemilinganiselo ngolu hlobo lulandelayo: 1. Ukuvinjelwa kweekhemikhali: Ukulawula umlinganiselo we-oyile-amanzi ngaphezu kwe-80: 20 ukunciphisa ukuhlaselwa kwesigaba samanzi ekubunjweni, ukukhusela ngokufanelekileyo. ukuvuvukala kunye nokuwa kwe-coal seams kunye nokwakheka kwamanzi amaninzi. 2. Ukufakwa kwe-Physical plugging: Ukongeza ii-agent zokulinganisa njengezinto ze-calcium kwangaphambili kwiifom ezibuthathaka zokuphucula ukubunjwa koxinzelelo kunye nokuthintela ukuvuza kakuhle. 3. Inkxaso yoomatshini: Ukulawula ukuxinana ngaphezu kwe-1.52g/cm³, ngokuthe ngcembe kwandisa ingxinano ukuya kumda woyilo we-1.58g/cm³ kwicandelo lokwakha. Ii-arhente zokulinganisa eziveliswe yiNkampani ye-Youzhu zinokufikelela kwisiphumo esinqwenelekayo, ziqinisekisa ukugqitywa okugudileyo nokuyimpumelelo kweeprojekthi zokomba kunye nokugqitywa kwamaqula.