Hydroxyethyl cellulose muDrilling Fluid

Hydroxyethyl cellulose (HEC) i polymer inonyungudika mumvura iyo inowanzoshandiswa seviscosifier mumvura yekuchera. Kuchera mvura, inozivikanwawo sekuchera madhaka, chinhu chakakosha mukuita kuchera kunoshandiswa mukutsvagisa oiri uye gasi, kugadzirwa kwesimba regeothermal, uye kubviswa kwemaminerari. Muchinyorwa chino, tichakurukura akasiyana mashandisirwo eHEC mukuchera zvinwiwa.

Viscosity Control

Imwe yemashandisirwo ekutanga eHEC mukuchera zvinwiwa ndeyekudzora viscosity yemvura. Viscosity zvinoreva kukora kana kuramba kuyerera kwemvura. Kuchera kunoda mvura inokwanisa kuyerera zviri nyore nepakati pechibooreso uye kutakura zvibooreso zvinocheka pamusoro. Zvisinei, kana viscosity yemvura yakanyanya kuderera, haizokwanisi kutakura ma cuttings, uye kana yakanyanyisa, zvichange zvakaoma kupomba kuburikidza netsime.

HEC inobata viscosifier nokuti inogona kuwedzera viscosity yemvura yekuchera pasina kuwedzera zvakanyanya kuwanda. Izvi zvakakosha nekuti mvura ine density yakakwira inogona kukonzera kukuvara kutsime uye inogona kutokonzera kudonha kwetsime. Pamusoro pezvo, HEC inoshanda pakudzika kwakadzika, izvo zvinobatsira kuderedza mutengo wakazara wemvura yekuchera.

Fluid Loss Control

Kumwe kushandiswa kwakakosha kweHEC mukuchera zvinwiwa ndiko kudzora kurasikirwa kwemvura. Kurasika kwemvura kunoreva kurasikirwa kwemvura mukuumbwa panguva yekuchera. Izvi zvinogona kukonzera kudzikiswa kwehuwandu hwemvura yekuchera, izvo zvinogona kuguma nekusagadzikana kwetsime uye kuderera kwekuchera.

HEC inoshanda yekurasikirwa kwemvura yekudzora mumiriri nekuti inogona kuumba yakaonda, isingapindiki sefa keke pamusoro peiyo kugadzirwa. Iri keke resefa rinobatsira kudzivirira mvura yekuchera kuti isapinda muchimiro, kuderedza kurasikirwa kwemvura uye kuchengetedza kugadzikana kwetsime.

Kumiswa uye Kutakura Kugona

HEC inoshandiswawo mukuchera zvinwiwa sekumiswa uye kutakura mumiriri. Nzira yekuchera inosanganisira kushandiswa kwezvakasiyana-siyana zvakasimba zvinowedzera, zvinosanganisira barite uye zvimwe zvinorema, izvo zvinowedzerwa kumvura kuti iwedzere kuwanda kwayo. HEC inoshanda pakumisa izvi zvakasimba zvinowedzera mumvura uye kudzivirira kubva pakugadzirisa kusvika pasi petsime.

Mukuwedzera, HEC inogona kuwedzera simba rekutakura remvura yekuchera. Izvi zvinoreva kuwanda kwezviboorwa zvinochekwa izvo mvura inogona kutakura kuenda pamusoro. Mvura ine hurefu hwekutakura inogona kubatsira kuvandudza kuchera uye kuderedza njodzi yekusagadzikana kwetsime.

Tembiricha uye pH Kugadzikana

Mvura yekuchera inoiswa kune akasiyana emamiriro ekunze, kusanganisira tembiricha yakanyanya uye acidic mamiriro. HEC inokwanisa kuchengetedza viscosity yayo uye kugadzikana mumamiriro ezvinhu aya akanyanya, zvichiita kuti ive yekuwedzera inoshanda yekuchera mvura inoshandiswa munzvimbo dzakaoma.

HEC zvakare pH yakagadzikana, zvichireva kuti inogona kuchengetedza viscosity yayo uye zvimwe zvinhu mumvura ine huwandu hwakawanda hwepH tsika. Izvi zvakakosha nekuti iyo pH yemvura yekuchera inogona kusiyanisa zvakanyanya zvichienderana nemamiriro e geological etsime.

Mhedziso

HEC chinhu chakakosha chekuwedzera mumvura yekuchera nekuda kwekukwanisa kwayo kudzora viscosity, kuderedza kurasikirwa kwemvura, kumisa uye kutakura zvakasimba zvinowedzera, uye kuchengetedza kugadzikana munzvimbo dzakaoma.