Hydroxyethylcellulose (HEC) is nonionic, mvura-soluble polymer inotorwa kubva muselulosi kuburikidza nenhevedzano yemakemikari maitiro. Inoshandiswa zvakanyanya mumaindasitiri akasiyana siyana, kusanganisira indasitiri yemafuta negasi, ichiita basa rakakosha mukuchera uye kupedza mvura. Muchirevo chechinyorwa chino, HEC inoshanda seye rheology modifier, inoyerera inodzora mumiriri, uye tackifier, ichibatsira kuvandudza kugona kwese uye budiriro yeoirifield mashandiro.
1. Nhanganyaya yeHydroxyethyl Cellulose (HEC)
Hydroxyethylcellulose inotorwa kubva kune cellulose, yakasikwa polymer inowanikwa muchirimwa sero madziro. Kuiswa kwemapoka e-hydroxyethyl kuburikidza nekugadzirisa kemikari kunowedzera kunyungudika kwayo kwemvura, zvichiita kuti ive yakawanda yakasiyana-siyana yakakodzera kushandiswa kwakasiyana-siyana. Muindasitiri yemafuta negasi, HEC inokosheswa nekuda kweiyo rheological properties, kugadzikana, uye kuenderana nezvimwe zvinowedzera zvinoshandiswa mukuchera zvinwiwa.
2. Kuita kweHEC kwakabatana nemafuta ekushandisa
2.1. Kunyungudika kwemvura
Kunyungudika kwemvura kweHEC chinhu chakakosha hunhu hwekushandisa kwayo nzvimbo yemafuta. Kunyungudika kwemvura yepolymer kunoita kuti zvive nyore kusanganisa nezvimwe zvekuchera zvinwiwa zvemvura uye inova nechokwadi chekugovera mukati meiyo fluid system.
2.2. Rheology control
Rimwe remabasa ekutanga eHEC mumafuta emuoiri kudzora rheology. Inoshandura viscosity yemvura uye inopa kugadzikana pasi pemamiriro akasiyana-siyana ekudzika. Ichi chivakwa chakakosha kuchengetedza inodiwa kuyerera maitiro emvura yekuchera mukati mekuita kuchera.
2.3. Kudzora kurasikirwa kwemvura
HEC inyanzvi yekudzora kurasikirwa kwemvura. Inobatsira kudzivirira kurasikirwa kwemvura yekuchera mukugadzirwa nekugadzira chidziviriro chekudzivirira pamadziro etsime. Ichi chivakwa chakakosha kugadzika kwetsime uye kuderedza kukuvadzwa kwekuumbwa.
2.4. Thermal kugadzikana
Oilfield mashandiro anowanzosangana nematembiricha makuru. HEC inogadzikana nekushisa uye inochengetedza kushanda kwayo mukudzora rheology uye kurasikirwa kwemvura kunyange pasi pemamiriro ekushisa akasangana mukuchera kwakadzika kwetsime.
2.5. Kuenderana nezvimwe zvinowedzera
HEC inopindirana nemhando dzakasiyana-siyana dzekuwedzera dzinowanzoshandiswa mukuchera zvinwiwa, semunyu, surfactants uye mamwe mapolima. Kudyidzana uku kunosimudzira mashandiro ayo uye kunobvumira kuti tsika yekuchera mvura masisitimu kuti iumbwe zvichibva pane chaiwo matsime emvura.
3. Kushandiswa mumafuta emumunda wemafuta
3.1. Mvura yekuchera
Munguva yekuchera mabasa, HEC inowedzerwa kumvura yekuchera kuti iwane yakakwana rheological properties. Inobatsira kudzora viscosity yemvura, kuve nechokwadi kutakurwa kwakanaka kwechibhorani chekucheka kusvika pamusoro uye kudzivirira kusagadzikana kwematsime.
3.2. Kupedzisa mvura
HEC inogona kushandiswa sefiltration control agent mukupedza zvinwiwa zvinoshandiswa panguva yekupedza zvakanaka uye workover mashandiro. Iyo inoumba chipingamupinyi pamadziro etsime, ichibatsira kuchengetedza zvakanaka madziro kugadzikana uye kudzivirira kukuvadzwa kweakatenderedza maumbirwo.
3.3. Kutsemuka kwemvura
Mu hydraulic fracturing, HEC inogona kushandiswa kugadzirisa rheological properties ye fracturing fluid. Iyo inobatsira mukusimudzira kumiswa uye kutakura, zvichibatsira mukubudirira kweiyo fracturing process uye kusikwa kweiyo inoshanda fracture network.
4. Mafungiro ekugadzira
4.1. Focus
Iko kusanganiswa kweHEC mumvura yekuchera chinhu chakakosha parameter. Inofanirwa kuve yakagadziridzwa zvichibva pane chaiwo matsime emvura, zvinodikanwa zvemvura uye kuvapo kwezvimwe zvinowedzera. Kunyanya kushandisa kana kusakwana kuisa pfungwa kunogona kukanganisa kuita kwemvura.
4.2. Kusanganisa nzira
Maitiro ekusanganisa akakosha kuti ave nechokwadi chekupararira kwakafanana kweHEC mumvura yekuchera. Kusanganiswa kusina kukwana kunogona kukonzera kusaenzana kwemvura, kukanganisa kushanda kwese kwemvura yekuchera.
4.3. Kudzora kwehutano
Matanho ekudzora emhando akakosha pakugadzirwa uye kushandiswa kweHEC mune oirifield application. Kuyedzwa kwakasimba kunofanirwa kuitwa kuti uone mashandiro epolymer uye kuve nechokwadi kuita kunoenderana.
5. Mafungiro ezvakatipoteredza uye kuchengeteka
5.1. Biodegradability
HEC inowanzoonekwa seyakaora, icho chinhu chakakosha pakuongorora maitiro ayo ezvakatipoteredza. Biodegradability inoderedza zvinogona kuitika kwenguva refu yeHEC pane zvakatipoteredza.
5.2. Utano nekuchengeteka
Nepo HEC ichinzi yakachengeteka kuti ishandiswe mune oirifield application, maitiro ekubata anofanirwa kuteverwa kudzivirira kuratidzwa. The Material Safety Data Sheet (MSDS) inopa ruzivo rwakakosha pamusoro pekubata kwakachengeteka uye kushandiswa kweHEC.
6. Mafambiro emangwana uye zvitsva
Indasitiri yeoiri negasi inoenderera mberi nekutsvaga hutsva hwekuvandudza kuchera uye kuderedza kukanganisa kwezvakatipoteredza. Tsvagiridzo inoenderera mberi yakanangana nekugadzira mapolymer matsva ane zvivakwa zvakagadziridzwa uye kuongorora dzimwe nzira dzakasimba dzechinyakare dzekuchera mvura yekuwedzera.
7. Mhedziso
Hydroxyethylcellulose inoita basa rakakosha muindasitiri yeoiri negasi, kunyanya mukuchera uye kupedzisa kuumbwa kwemvura. Musanganiswa wayo wakasarudzika we rheology control, kudzivirira kurasikirwa kwemvura uye kuenderana nezvimwe zvinowedzera zvinoita kuti ive chinhu chakakosha mukuona kuti inobudirira uye inobudirira mashandiro emunda wemafuta. Sezvo tekinoroji ichifambira mberi, kuenderera mberi nekutsvagisa uye kusimukira kunogona kutungamirira kune imwezve kuvandudzwa muHEC uye kudhirowa kwemvura maumbirwo, zvichibatsira mukutsvagisa uye nekutarisira kuongorora kwemafuta uye gasi zviwanikwa.
Nguva yekutumira: Zvita-02-2023