Hydroxyethylcellulose (HEC) ndi nonionic, sungunuka m'madzi polima yochokera ku cellulose kudzera muzochita zingapo zamankhwala. Amagwiritsidwa ntchito kwambiri m'mafakitale osiyanasiyana, kuphatikiza mafuta ndi gasi, amagwira ntchito yofunika kwambiri pakubowola ndi kumaliza madzimadzi. M'nkhaniyi, HEC imagwira ntchito ngati rheology modifier, control flow, and tackifier, kuthandiza kukonza bwino komanso kuchita bwino kwa ntchito zamafuta.
1. Kuyamba kwa Hydroxyethyl Cellulose (HEC)
Hydroxyethyl cellulose ndi chochokera ku cellulose, polima wachilengedwe wopezeka m'makoma a cellulose. Kuyambitsidwa kwa magulu a hydroxyethyl kupyolera mu kusintha kwa mankhwala kumawonjezera kusungunuka kwake kwa madzi, ndikupangitsa kukhala kosunthika koyenera kwa ntchito zosiyanasiyana. M'makampani amafuta ndi gasi, HEC imayamikiridwa chifukwa cha rheological properties, kukhazikika, komanso kugwirizana ndi zina zowonjezera zomwe zimagwiritsidwa ntchito pobowola madzi.
2. Ntchito ya HEC yokhudzana ndi ntchito za oilfield
2.1. Kusungunuka kwamadzi
Kusungunuka kwamadzi kwa HEC ndichinthu chofunikira kwambiri pamagwiritsidwe ake amafuta. Kusungunuka kwamadzi kwa polima kumapangitsa kuti zikhale zosavuta kusakanikirana ndi zosakaniza zina zobowola ndikuwonetsetsa kuti zigawidwe mkati mwamadzimadzi.
2.2. Kulamulira kwa Rheology
Imodzi mwa ntchito zofunika kwambiri za HEC m'madzi amafuta ndikuwongolera rheology. Iwo amasintha mamasukidwe akayendedwe a madzimadzi ndi amapereka bata pansi mosiyanasiyana downhole mikhalidwe. Katunduyu ndi wofunikira kuti asunge mawonekedwe oyenda bwino amadzimadzi obowola panthawi yonse yobowola.
2.3. Kuwongolera kutaya madzi
HEC ndi wothandizira wowongolera kutaya kwa madzi. Zimathandiza kupewa kutaya kwa madzi akubowola mu mapangidwe mwa kupanga chotchinga choteteza pa makoma chitsime. Katunduyu ndi wofunikira kuti chitsime chikhazikike komanso kuchepetsa kuwonongeka kwa mapangidwe.
2.4. Kukhazikika kwamafuta
Ntchito za Oilfield nthawi zambiri zimakumana ndi kutentha kwakukulu. HEC imakhala yokhazikika komanso imakhala yogwira mtima poyang'anira rheology ndi kutaya kwamadzimadzi ngakhale pansi pa kutentha kwakukulu komwe kumachitika pobowola bwino.
2.5. Kugwirizana ndi zina zowonjezera
HEC imagwirizana ndi zowonjezera zosiyanasiyana zomwe zimagwiritsidwa ntchito pobowola madzi, monga mchere, ma surfactants ndi ma polima ena. Kugwirizana kumeneku kumawonjezera kusinthasintha kwake ndikulola kuti machitidwe obowola amadzimadzi apangidwe potengera mikhalidwe yachitsime.
3. Kugwiritsa ntchito madzi a m'munda wamafuta
3.1. Kubowola madzimadzi
Pa kubowola ntchito, HEC anawonjezera kuti pobowola madzimadzi kukwaniritsa mulingo woyenera kwambiri rheological katundu. Imathandiza kuwongolera mamasukidwe amadzimadzi, kuwonetsetsa kuyenda bwino kwa mabowola pamwamba ndikupewa kusakhazikika kwa Wellbore.
3.2. Kumaliza madzimadzi
HEC ikhoza kugwiritsidwa ntchito ngati chowongolera kusefera pakumalizidwa kwamadzi omwe amagwiritsidwa ntchito pomaliza bwino komanso kugwira ntchito. Zimapanga chotchinga pakhoma lachitsime, zomwe zimathandiza kuti khoma likhale lokhazikika komanso kuti lisamawononge mapangidwe ozungulira.
3.3. Fracturing madzi
Mu hydraulic fracturing, HEC ikhoza kugwiritsidwa ntchito kusintha mawonekedwe a rheological of the fracturing fluid. Imathandizira kuyimitsidwa ndi kunyamula, zomwe zimathandizira kuti ntchito ya fracturing ipambane komanso kupanga maukonde ogwira mtima osweka.
4. Kuganizira za mapangidwe
4.1. Kuyikira Kwambiri
Kuchuluka kwa HEC mumadzi obowola ndikofunikira kwambiri. Ayenera kukonzedwa motengera mikhalidwe ya chitsime, zofunika zamadzimadzi komanso kupezeka kwa zina zowonjezera. Kugwiritsa ntchito mopitirira muyeso kapena kusakwanira kokwanira kumatha kusokoneza magwiridwe antchito amadzimadzi.
4.2. Kusakaniza ndondomeko
Njira zosakanikirana zoyenerera ndizofunikira kuti zitsimikizire kufalikira kofanana kwa HEC mumadzi obowola. Kusakaniza kosakwanira kungapangitse katundu wosagwirizana wamadzimadzi, zomwe zimakhudza ntchito yonse yamadzimadzi obowola.
4.3. Kuwongolera khalidwe
Njira zowongolera khalidwe ndizofunikira kwambiri pakupanga ndi kugwiritsa ntchito HEC muzolemba zamafuta. Kuyesedwa kolimba kuyenera kuchitidwa kuti zitsimikizire momwe ma polima amagwirira ntchito ndikuwonetsetsa kuti akugwira ntchito mosasinthasintha.
5. Kuganizira za chilengedwe ndi chitetezo
5.1. Biodegradability
HEC nthawi zambiri imawonedwa ngati yowola, yomwe ndi yofunika kwambiri pakuwunika momwe chilengedwe chimakhudzira chilengedwe. Biodegradability imachepetsa zomwe zingachitike kwa nthawi yayitali za HEC pa chilengedwe.
5.2. Thanzi ndi chitetezo
Ngakhale HEC imaonedwa kuti ndi yotetezeka kuti igwiritsidwe ntchito m'malo opangira mafuta, njira zoyendetsera bwino ziyenera kutsatiridwa kuti zisawonongeke. The Material Safety Data Sheet (MSDS) imapereka chidziwitso chofunikira chokhudza kusamalira bwino ndi kugwiritsa ntchito HEC.
6. Zochitika zamtsogolo ndi zatsopano
Makampani amafuta ndi gasi akupitilizabe kufunafuna njira zatsopano zothandizira kubowola bwino komanso kuchepetsa kuwonongeka kwa chilengedwe. Kafukufuku wopitilira amayang'ana kwambiri kupanga ma polima atsopano okhala ndi zinthu zotsogola ndikuwunika njira zina zokhazikika m'malo mwazowonjezera zamadzimadzi zakubowola.
7. Mapeto
Hydroxyethylcellulose imagwira ntchito yofunika kwambiri pamakampani amafuta ndi gasi, makamaka pobowola ndi kumaliza kupanga madzimadzi. Kuphatikiza kwake kwapadera kwa rheology control, kupewa kutaya madzimadzi komanso kuyanjana ndi zowonjezera zina kumapangitsa kukhala gawo lofunikira pakuwonetsetsa kuti ntchito zamafuta zikuyenda bwino. Pamene luso lamakono likupita patsogolo, kafukufuku wopitilira ndi chitukuko angapangitse kusintha kwina kwa HEC ndi kubowola madzimadzi, potero kuthandizira kufufuza kosasunthika kwa mafuta ndi gasi.
Nthawi yotumiza: Dec-02-2023