Oilfield Chemical Additives Application Cases

Mu 2022, poyang'anizana ndi vuto la mliri wa COVID-19, Northwest Oilfield Well Completion Management Center idamaliza ntchito 24, kuphatikiza zida zowongolera zitsime zamafuta ndi kuyeretsa mapaipi otsekera mafuta olemera, kupulumutsa ndalama zogulira ndalama zokwana 13.683 miliyoni yuan.

Mukamagwiritsa ntchito mapaipi amafuta, kuchuluka kwa chitoliro kumacheperachepera chifukwa cha sera, ma polima, ndi mchere, kumachepetsa kuyenda kwamafuta osakanizika komanso kukhudza kupanga mafuta. Choncho, makampani obowola nthawi zambiri amatsuka mapaipi kamodzi pachaka. Pambuyo kuchitira weld seams wa olowa chitoliro m`pofunika kuyeretsa mapaipi.

Nthawi zambiri, mapaipi achitsulo omwe amagwiritsidwa ntchito ngati mapaipi amafuta amakhala ndi dzimbiri mkati ndi kunja. Ngati sichitsukidwa, izi zidzayipitsa mafuta a hydraulic pambuyo pogwiritsira ntchito, zomwe zimakhudza ntchito yachibadwa ya zipangizo zamagetsi. Choncho, m'pofunika kuchotsa dzimbiri pakatikati pa mipope kudzera mu kutsuka kwa asidi. Kutsuka kwa asidi kungathenso kuchotsa dzimbiri kunja kwa mapaipi, zomwe zimakhala zopindulitsa popaka utoto wotsutsa dzimbiri kunja kwa mapaipi, kupereka chitetezo chokhalitsa kwa nthawi yaitali. Kutsuka kwa asidi kumachitika pogwiritsa ntchito njira ya asidi yokhala ndi 0% mpaka 15%. Youzhu Company, popereka mankhwala oletsa dzimbiri: UZ CI-180, choletsa kutentha kwambiri chosamva acidizing corrosion inhibitor kuti chigwiritsidwe ntchito ku oilfield. Munthawi ya acidizing kapena pickling, asidi amawononga chitsulo, ndipo kutentha kwambiri, kuchuluka kwa dzimbiri ndi kuchuluka kwa dzimbiri kudzawonjezeka kwambiri, chifukwa chake, popanga mafuta, kupewa dzimbiri kwa chitoliro chapamwamba ndikofunikira kwambiri. zomwe sizimangokhudzana ndi phindu la kugwiritsidwa ntchito kwa mafuta, komanso zogwirizana kwambiri ndi chitetezo cha kupanga. Mlingo wa kukokoloka asidi pa mapaipi ndi zipangizo zimadalira nthawi kukhudzana, ndende asidi ndi kutentha zinthu, etc. UZ CI-180 ali kwambiri mkulu-kutentha kukana, ndi pa kutentha kwa 350 ° F (180 ° C), ndi dzimbiri. Zotsatira za asidi pazitsulo pa kutentha kwakukulu pansi pa chitsime zingathe kuchepetsedwa kwambiri powonjezera UZ CI-180 kusakaniza kwa asidi. Youzhu walandira kuzindikirika kwakukulu kuchokera ku Northwest Oilfield Management Center chifukwa cha ntchito zake pakuyeretsa mapaipi, kupanga madzimadzi, komanso kukonza zida.

Ili pa Dong San Road ku Dongying City, chitsime cha Fengye 1-10HF ndiye chitsime choyamba chamafuta a shale chopingasa kudutsa chotchinga chobowola chamasiku 20, ndikumaliza masiku 24 pasadakhale. Ndilo limodzi mwa magawo atatu owonetsera mafuta a shale omwe avomerezedwa ndi National Energy Administration komanso malo oyamba owonetserako mafuta a shale ku China. Pomaliza chitsimechi masiku 24 pasadakhale, ndalama zopitilira 10 miliyoni zidapulumutsidwa.

Chifukwa cha kuyandikira kwa chitsime chapafupi chomwe chidasweka mtunda wa 400 metres komanso kuyandikira malire amiyala, Fengye 1-10HF idakumana ndi ziwopsezo zakulowetsedwa kwamadzi, kusefukira, komanso kutaya madzimadzi. Kuphatikiza apo, kutentha kwambiri pansi pa chitsime kumabweretsa zovuta ku zida zosiyanasiyana. Gulu la polojekitiyi lidayang'ana pa chithandizo chaukadaulo waukadaulo ndikuthana ndi zovuta zazikulu zaukadaulo. Anathetsa zopinga motsatizana monga vuto lolosera malo okoma amphamvu amitundu yosiyanasiyana, malire a zida zomwe zimatenthedwa komanso kupanikizika, komanso kupezeka kwa madzimadzi pakubowola ndi kuchuluka.

Anapanga ndikugwiritsa ntchito matope opangidwa ndi matope kuti apititse patsogolo madzi. Zina mwa izi, zowonjezera zowonjezera zowonjezera TF WH-1 Cement Fluid-loss Additives, zopangidwa ndi Youzhu zimatha kupanga filimu yapamwamba pamwamba pa chitsime cha shale, kuteteza kusefa kwamadzimadzi kuti asalowe mu mapangidwe, TF FL WH- 1 idapangidwa kuti igwiritsidwe ntchito m'zitsime zokhala ndi kutentha kwapansi-bowo (BHCTs) mu 60 ℉ (15.6 ℃) mpaka 400 ℉ (204 ℃).

TF FL WH-1 imapereka kuwongolera kwamadzi kwa API pansi pa 36cc / 30min ndikuwongolera kusamuka kwa gasi kuchokera pamapangidwe. Nthawi zambiri 0.6% mpaka 2.0% BWOC imafunika m'matope ambiri. Nthawi zambiri amagwiritsidwa ntchito pa mlingo wochepera 0.8% BWOCpotero amateteza posungira ndi kukhazikika kwa chitsimecho. Izi zimatseka bwino pores ndi ma microfractures, kuteteza kusefa kwamadzimadzi kuti zisalowe ndikuchepetsa kufalikira kwa pore, kumathandizira kwambiri kuletsa kwamadzimadzi obowola.

Zotsatira za ntchito ya m'munda zikuwonetsa kuti madzi obowola kwambiri opangidwa ndi madzi amalepheretsa kwambiri, amawonjezera liwiro la kubowola pamakina, amakhala osasunthika pakatentha kwambiri, amateteza posungira, komanso ndi wokonda zachilengedwe.

Mu February 2022, chitsime cha Sinopec's Bazhong 1HF, chomwe chili mumtsinje wa Jurassic mtsinje wa sandstone wosungira mafuta ndi gasi, chinapereka lingaliro la "fracturing, imbibition, and well shut-in integration" lingaliro la mapangidwe apangidwe. Njirayi idapangidwa kuti ithetsere mikhalidwe ya mitsinje yowundana yamitsinje yamchenga komanso mapangidwe apamwamba amphamvu. Ukadaulo wokongoletsedwa bwino wa fracturing, womwe umaphatikizapo "kudula molimba + kusanja kwakanthawi ndi kupatutsidwa + kuwonjezereka kwa mchenga wowonjezera + kukulitsa kwamafuta owonjezera," kumathandizira kwambiri kuyenda kwamafuta apansi panthaka ndi gasi ndikukhazikitsa mtundu watsopano wopukutira, womwe umapereka chidziwitso chambiri- kusweka kwa zitsime zopingasa.

Youzhuo's high-temperature fluid loss additive, high-temperature anti-collapse plugging agent, and high-temperature flow flow type regulator mu fracturing fluid amagonjetsa kupsyinjika ndi kutayika kwamadzimadzi komwe kumachitika chifukwa cha kuthamanga kwa pore, kupanikizika kwa chitsime, ndi mphamvu ya thanthwe. Ukadaulo wapadera wa plugging gel, wochokera ku Southwest Petroleum University, umalola gel osakaniza kuti angosiya kuyenda atalowa wosanjikiza wotayika, kudzaza ma fractures ndi malo opanda kanthu, ndikupanga "plug gel" yomwe imalekanitsa madzi opangira mkati kuchokera kumadzi amadzimadzi. Ukadaulo uwu ndiwothandiza kwambiri pakutayikira kwakukulu m'mapangidwe osweka, ma porous, ndi osweka ndikutayika kwakukulu kwamadzimadzi komanso ma voliyumu ochepa obwerera.

Pa Meyi 30, 2023, nthawi ya 11:46 AM, Tarim Oilfield of China National Petroleum Corporation (CNPC) idayamba kubowola pachitsime cha Shendi Teke 1, kusonyeza kuyamba kwa ulendo wofufuza sayansi yakuya kwambiri ya geological and engineering mozama kwambiri. 10,000 mamita. Ichi ndi nthawi yodziwika bwino yaukadaulo waku China wapadziko lapansi, zomwe zikuwonetsa kupambana kwakukulu muukadaulo wofufuza zakuya padziko lapansi komanso chiyambi cha "nthawi yamamita 10,000" pakubowola.

Chitsime cha Shendi Teke 1 chili ku Shaya County, Aksu Prefecture, Xinjiang, mkati mwa Chipululu cha Taklamakan. Ndilofunika "ntchito yakuya padziko lapansi" yopangidwa ndi CNPC ku Tarim Oilfield, moyandikana ndi dera la Fuman Ultra-deep mafuta ndi gasi, lomwe lili ndi kuya kwa 8,000 metres ndi matani biliyoni imodzi. Chitsimechi chili ndi kuya kwa 11,100 metres komanso nthawi yoboola yomwe idakonzedwa ndikumaliza masiku 457. Pa Marichi 4, 2024, kuya kwa Shendi Teke 1 kudaposa 10,000 metres, zomwe zidapangitsa kuti chikhale chachiwiri padziko lonse lapansi komanso chitsime choyamba choyimirira ku Asia kupitilira kuya uku. Chochitika chachikulu ichi chikuwonetsa kuti dziko la China lathana ndi mavuto azaumisiri okhudzana ndi kubowola zitsime zozama mozama motere.

Kubowola mwakuya kwa 10,000 metres ndi imodzi mwamagawo ovuta kwambiri paukadaulo waukadaulo wamafuta ndi gasi, wokhala ndi zovuta zambiri. Ndichizindikiro chachikulu chaukadaulo waukadaulo wadziko ndi luso la zida. Poyang'anizana ndi kutentha kwambiri kwa kutsika ndi kupanikizika, kupita patsogolo kwakukulu kunachitika mumadzi obowola otentha kwambiri, ma mota osatentha kwambiri, komanso matekinoloje obowola molunjika. Kupititsa patsogolo kunachitikanso pazida zopangira sampuli ndi zida zodulira zingwe, magalimoto okwera kwambiri okhala ndi mphamvu ya 175 MPa, ndi zida zamadzimadzi zophulika, zomwe zidayesedwa bwino pamalopo. Zomwe zikuchitikazi zidapangitsa kuti pakhale umisiri wofunikira kwambiri pakubowola kotetezeka komanso koyenera komanso kumaliza zitsime zozama kwambiri.

M'mabowo amadzimadzi omwe amagwiritsidwa ntchito mu polojekitiyi, malo enieni omwe ali ndi kutentha kwambiri, kutentha kwakukulu kunayankhidwa ndi chitukuko cha otsika kwambiri ochepetsera madzimadzi ndi zowonongeka zomwe zimakhala ndi ma rheological katundu pansi pa kutentha kwambiri ndipo zimakhala zosavuta kusintha ndi kusunga. Dongo kulamulira zina komanso kumatheka dewatering mphamvu ya dongo particles pansi kopitilira muyeso-mkulu kutentha zinthu, kuwongolera kusinthasintha ndi bata la pobowola madzimadzi.

Mafuta a Jimusar shale ndi malo oyamba owonetsera mafuta a shale ku China, omwe ali kum'mawa kwa Junggar Basin. Ili ndi malo okwana ma kilomita 1,278 ndipo ili ndi zosungirako zokwana matani 1.112 biliyoni. Mu 2018, kukula kwakukulu kwa mafuta a Jimusar shale kudayamba. M'gawo loyamba, Xinjiang Jimusar National Terrestrial Shale Oil Demonstration Zone inapanga matani 315,000 a mafuta a shale, ndikulemba mbiri yatsopano. Malo owonetserako akufulumizitsa kuyesetsa kuonjezera nkhokwe za mafuta a shale ndi kupanga, ndi mapulani omaliza zitsime 100 zoboola ndi zitsime 110 zong'ambika pofika 2024.

Mafuta a shale, omwe ndi mafuta omwe amamangiriridwa pamwala wa shale kapena mkati mwa ming'alu yake, ndi imodzi mwa mitundu yovuta kwambiri yamafuta kuchotsa. Xinjiang ili ndi mafuta ochuluka a shale omwe ali ndi chiyembekezo chochulukirapo pakufufuza ndi chitukuko. China yazindikira kuti mafuta a shale ndiye gawo lofunikira pakubwezeretsa mafuta m'tsogolo. Wu Chengmei, injiniya wachiwiri ku Geological Research Center ku Jiqing Oilfield Operations Area ku Xinjiang Oilfield, akufotokoza kuti mafuta a shale a Jimusar nthawi zambiri amakwiriridwa pansi pamtunda wa mamita oposa 3,800. Kuyika m'manda mozama komanso kutsika pang'ono kumapangitsa kuti kuchotsa mafuta kukhale kovuta ngati kuchotsa mafuta kuchokera muwhetstone.

Kukula kwa mafuta a shale ku China nthawi zambiri kumakumana ndi zovuta zinayi zazikulu: choyamba, mafuta ndi olemera kwambiri, zomwe zimapangitsa kuti aziyenda movutikira; chachiwiri, malo okoma ndi ochepa komanso ovuta kufotokozera; chachitatu, kuchuluka kwa dongo kumapangitsa kuti fracturing ikhale yovuta; chachinayi, kugawa sikukugwirizana, ntchito zovuta. Izi zakhala zikulepheretsa kukula kwakukulu komanso koyenera kwa mafuta a shale ku China. Mu pulojekitiyi, pochiza fracturing flowback fluid, chowonjezera chatsopano chimagwiritsidwa ntchito kuchepetsa kuipitsa ndikubwezeretsanso madzimadziwo, kuwatembenuza kukhala madzimadzi ophwanyidwa kuti agwiritsidwenso ntchito. Njirayi idayesedwa pazitsime zisanu ndi zinayi mu 2023 ndi zotsatira zabwino kwambiri. Pofika mu June 2024, polojekitiyi ikukonzekera kugwiritsa ntchito madzi otsekemera opangidwanso pochita opaleshoni yaikulu.

Mapangidwe akuluakulu a polojekitiyi amakhala ndi ma seams a malasha, magawo a matope a imvi ndi a bulauni, omwe ndi mapangidwe osamva madzi. Mu chipika cha mafuta a shale cha Jimusar, gawo lotseguka la chitsime chachiwiri ndi lalitali, ndipo nthawi yothira mapangidwe imakulitsidwa. Ngati matope opangidwa ndi madzi agwiritsidwa ntchito, kugwa ndi kusakhazikika kumakhala kotheka, koma madzi obowola opangidwa ndi mafuta samayambitsa hydration. Mafuta a emulsion pobowola madzi amadzimadzi, akakhazikika, samayambitsanso hydration, motero madzi obowola opangidwa ndi mafuta sapanga kupsinjika kwa kutupa kwa hydration. Kafukufuku wadzetsa kukhazikitsidwa kwa matope opangidwa ndi mafuta, okhala ndi mfundo zotsutsana ndi kugwa ndi miyeso motere: 1. Kuletsa kwa Chemical: Kuwongolera kuchuluka kwa mafuta ndi madzi pamwamba pa 80: 20 kuchepetsa kulowerera kwa gawo lamadzi mu mapangidwe, kuteteza bwino. kutupa ndi kugwa kwa seams malasha ndi mapangidwe kwambiri osamva madzi. 2. Kulumikiza kwakuthupi: Kuonjezera zolemetsa monga zinthu za calcium pasadakhale m'mapangidwe ofooka kuti apititse patsogolo mphamvu yogwira ntchito komanso kupewa kutayikira bwino. 3. Thandizo lamakina: Kuwongolera kachulukidwe pamwamba pa 1.52g/cm³, pang'onopang'ono kukulitsa kachulukidwe mpaka malire a mapangidwe a 1.58g/cm³ mu gawo lomanga. Zoyezera zoyezera zomwe zimapangidwa ndi Kampani ya Youzhu zitha kukwaniritsa zomwe mukufuna, kuwonetsetsa kuti ntchito yobowola komanso yomaliza bwino ikukwaniritsidwa bwino.