Hydroxyethyl Cellulose (HEC) imagwira ntchito yofunika kwambiri pakugwiritsa ntchito mafuta ndi gasi. Monga multifunctional polima zakuthupi, chimagwiritsidwa ntchito pobowola madzimadzi, kumaliza madzimadzi, fracturing madzimadzi ndi zina. Kagwiritsidwe ntchito ndi kagwiritsidwe ntchito kake zimawonekera makamaka m'magawo awa:
1. Kugwiritsa ntchito pobowola madzimadzi
a. Thickener
Kugwiritsiridwa ntchito kofala kwa HEC pobowola madzi kumakhala ngati thickener. Kubowola madzimadzi (matope) kumafunika kukhala ndi mamachulukidwe enaake kuti zitsimikizike kuti zodulidwazo zimatengedwa kupita pamwamba pobowola kuti asatseke chitsime. HEC akhoza kwambiri kuonjezera mamasukidwe akayendedwe a pobowola madzimadzi, kupereka kuyimitsidwa bwino ndi kunyamula mphamvu.
b. Womanga khoma
Pobowola, kukhazikika kwa khoma la chitsime ndikofunikira. HEC imatha kukonza mapulagi amadzimadzi obowola ndikupanga keke yamatope pakhoma la chitsime kuti chitsime chisagwe kapena kutayikira. Izi zomangira khoma sizimangowonjezera kukhazikika kwa khoma la chitsime, komanso kumachepetsa kutayika kwa madzi obowola, potero kumathandizira kubowola bwino.
c. Kusintha kwa Rheology
HEC ali wabwino rheological katundu ndipo akhoza kusintha rheological katundu pobowola madzi. Posintha kuchuluka kwa HEC, mtengo wa zokolola komanso kukhuthala kwamadzi obowola zitha kuwongoleredwa, zomwe ndizofunikira pakubowola koyenera.
2. Kugwiritsa ntchito madzi omaliza
a. Chabwino khoma bata kulamulira
Madzi omaliza ndi madzi omwe amagwiritsidwa ntchito pomaliza ntchito yoboola ndikukonzekera kupanga. Monga gawo lofunikira pakumaliza kwamadzimadzi, HEC imatha kuwongolera kukhazikika kwa khoma lachitsime. The thickening katundu wa HEC zimathandiza kuti kupanga khola madzimadzi dongosolo mu madzimadzi amamaliza, potero kupereka zabwino wellbore thandizo.
b. Permeability control
Panthawi yomaliza bwino, HEC ikhoza kupanga keke yamatope yomwe imalepheretsa madzi kulowa mkati mwa mapangidwe. Mbali imeneyi n'kofunika kwambiri kupewa mapangidwe kuwonongeka ndi bwino kutayikira, ndi kuonetsetsa patsogolo yosalala ndondomeko akamaliza.
c. Kuwongolera kutaya kwamadzimadzi
Mwa kupanga keke yabwino yamatope, HEC imatha kuchepetsa kutaya kwamadzimadzi ndikuwonetsetsa kugwiritsa ntchito bwino kwamadzi omaliza. Izi zimathandiza kuchepetsa ndalama zogwirira ntchito ndikuonetsetsa kuti zomangamanga zisamayende bwino.
3. Kugwiritsa ntchito fracturing madzimadzi
a. Thickener
Mu hydraulic fracturing operations, fracturing fluid iyenera kunyamula proppant (monga mchenga) mu fractures ya mapangidwe kuti athandize fractures ndi kusunga mafuta ndi gasi njira zotseguka. Monga thickener, HEC akhoza kuonjezera mamasukidwe akayendedwe a fracturing madzimadzi ndi kupititsa patsogolo mchenga-kunyamula mphamvu, potero kusintha fracturing zotsatira.
b. Cross-linking agent
HEC itha kugwiritsidwanso ntchito ngati njira yolumikizirana kuti ipange makina a gel okhala ndi mamasukidwe apamwamba komanso mphamvu mwakuchita ndi mankhwala ena. Dongosolo la gel osakaniza limatha kupititsa patsogolo kunyamula mchenga kwamadzi ophwanyidwa ndikukhalabe okhazikika pakutentha kwambiri.
c. Wothandizira kuwononga
Pambuyo pa ntchito ya fracturing ikamalizidwa, zotsalira zamadzimadzi zomwe zimaphwanyidwa ziyenera kuchotsedwa kuti zibwezeretsedwe bwino kwa mapangidwewo. HEC imatha kuwongolera njira yowonongeka kuti iwononge madzi otsekemera kukhala otsika kwambiri a viscosity fluid mkati mwa nthawi yeniyeni yochotsa mosavuta.
4. Kuteteza chilengedwe ndi kukhazikika
Monga zinthu zosungunuka za polima, HEC ili ndi biodegradability yabwino komanso kuyanjana kwachilengedwe. Poyerekeza ndi mafuta opangira mafuta amtundu wamba, HEC ilibe mphamvu zochepa pa chilengedwe ndipo imagwirizana kwambiri ndi chitetezo cha chilengedwe ndi zofunikira zokhazikika za ntchito zamakono za mafuta ndi gasi.
Kugwiritsiridwa ntchito kwakukulu kwa hydroxyethyl cellulose mu ntchito zamafuta ndi gasi makamaka chifukwa cha kukhuthala kwake, kumanga khoma, kusintha kwa rheological ndi ntchito zina. Sikuti zimangowonjezera magwiridwe antchito akubowola ndi kumaliza madzimadzi, zimathandizanso kwambiri pakuphwanya madzi, kuwongolera magwiridwe antchito komanso chitetezo. Ndi kusintha kwa zofunikira zachitetezo cha chilengedwe, HEC, ngati chinthu chokonda zachilengedwe, ili ndi chiyembekezo chogwiritsa ntchito.
Nthawi yotumiza: Jul-10-2024