Oilfield Chemical Additives Application Cases

Muna 2022, takatarisana nekukanganisa kwedenda reCCIDID-19, Northwest Oilfield Well Completion Management Center yakapedza mapurojekiti makumi maviri nemana, anosanganisira midziyo yekudzora matsime emafuta uye kuchenesa pombi yemafuta anorema, kuchengetedza mutengo wekutenga miriyoni gumi nematanhatu.

Munguva yekushandiswa kwepombi dzemafuta, dhayamita yepombi inowedzera kudikitira nekuda kwemhedzisiro yewakisi, mapolima, uye munyu, kuderedza kuyerera kwemafuta asina kuchena uye kukanganisa kugadzirwa kwemafuta asina kuchena. Naizvozvo, makambani ekuchera anowanzo chenesa pombi kamwe chete pagore. Mushure mekurapa weld seams yemajoini epombi, zvakakosha kuchenesa mapaipi.

Mumamiriro ezvinhu, pombi dzesimbi dzinoshandiswa sepombi dzemafuta dzine ngura mukati nekunze. Kana isina kucheneswa, izvi zvinosvibisa hydraulic oiri mushure mekushandisa, zvichikanganisa kushanda kwakajairwa kweiyo hydraulic zvishandiso. Nokudaro, zvakakosha kubvisa ngura pamusoro pemukati wepombi kuburikidza nekushambidza asidi. Acid washing inogonawo kubvisa ngura pamusoro pekunze kwepombi, iyo inobatsira pakuisa pende ye-anti-rust kune kunze kwepamusoro pepombi, ichipa kudzivirirwa kwenguva refu kwekudzivirira. Acid washing inowanzoitwa uchishandisa acid solution ine centre ye 0% kusvika 15%. Youzhu Kambani, nekupa corrosion inhibitor zvigadzirwa:UZ CI-180, yakanyanya tembiricha isingaite acidizing corrosion inhibitor yekushandiswa kwemafuta. Mukuita acidizing kana pickling, iyo asidhi inoshatisa simbi, uye pakupisa kwakanyanya, chiyero uye huwandu hwekuora huchawedzerwa zvakanyanya, saka, mukugadzirwa kwemafuta, kudzivirira kusvibiswa kwepombi yekupisa kwakanyanya kunonyanya kukosha. izvo zvisina hukama chete nemabhenefiti ekushandiswa kweoirifield, asi zvakare zvine hukama nekuchengetedzwa kwekugadzira. Dhigirii rekukukurwa kweasidhi pamapaipi uye midziyo zvinoenderana nenguva yekusangana, acid concentration uye tembiricha mamiriro. mhedzisiro yeasidhi pasimbi pakudziya kwakanyanya pasi pegomba inogona kuderedzwa zvakanyanya nekuwedzera UZ CI-180 kumusanganiswa weasidhi. Youzhu yakagamuchira rukudzo rwepamusoro kubva kuNorthwest Oilfield Management Center yemapurojekiti ayo mukuchenesa pombi, kudhirowa kwemvura kuumbwa, uye kugadzirisa kwemidziyo.

Iri paDong San Road muDongying Guta, iyo Fengye 1-10HF tsime ndiyo yekutanga shale mafuta yakatwasuka tsime rekupaza nepakati pemazuva makumi maviri ekuchera kutenderera, achipedza mazuva makumi maviri nemana pamberi pehurongwa. Ndiyo imwe yenzvimbo nhatu dzenyika shale dzekuratidzira dzakatenderwa neNational Energy Administration uye yekutanga nyika kuratidzira nzvimbo yekondinendi inokanganisa basin shale mafuta muChina. Nekupedza tsime mazuva makumi maviri nemana pamberi pehurongwa, anopfuura mamirioni gumi yuan akachengetwa mumutengo.

Nekuda kwekuva pedyo netsime riri pedyo rakatsemuka 400 metres chete uye padyo nemuganhu wematombo ematombo, iyo Fengye 1-10HF yakanyatsotarisana nenjodzi dzekupindirwa kwemvura, kufashukira, uye kurasikirwa kwemvura. Pamusoro pezvo, tembiricha yepamusoro pazasi petsime yakaunza matambudziko kune akasiyana zviridzwa. Chikwata cheprojekiti chakatarisana nerutsigiro rwetekinoroji yeinjiniya uye kugadzirisa nyaya dzakakosha dzetekinoroji. Vakagadzirisa zvipingamupinyi zvakatevedzana senge kuomerwa kwekufanotaura kwakasimba heterogeneity zvinotapira mavara, miganhu yezviridzwa pasi pekupisa kwakanyanya uye kumanikidzwa, uye kugarisana kwekudonha kwemvura yekudonha nekuwanda.

Vakagadzira uye vakashandisa synthetic-based mud system yekuvandudza fluidity. Pakati peizvi, ikozvino yekuchera mvura yekuwedzera yeTF FL WH-1 Cement Fluid-kurasikirwa Additives, yakagadzirwa naYouzhu inogona kugadzira firimu remhando yepamusoro pamusoro petsime re shale, kudzivirira kudhirowa kwemvura kusapinda mukuumbwa, TF FL WH- 1 yakagadzirirwa kushandiswa mumatsime ane pasi-gomba rinotenderera tembiricha (BHCTs) mu60 ℉ (15.6 ℃) kusvika 400 ℉ (204 ℃).

TF FL WH-1 inopa API fluid kurasikirwa kutonga pazasi 36cc/30min ichidzora kutama kwegasi kubva pakuumbwa. Kazhinji 0.6% kusvika 2.0% BWOC inodiwa mune dzakawanda slurries. Inowanzo shandiswa pachiyero chisingasviki 0.8% BWOCnekudaro kuchengetedza dura uye kudzikamisa tsime. Izvi zvinonyatsovhara shale pores uye microfractures, kudzivirira kudhirowa kwemvura filtrate kubva pakupinda uye kuderedza kutapurirana kwepore pressure, zvakanyanya kuwedzera inhibition yemvura yekuchera.

Mhedzisiro yekushandiswa kwemumunda inoratidza kuti iyo yepamusoro-inoshanda yemvura-yakavakirwa mvura yekuchera inodzivirira zvakanyanya, inowedzera mechini yekuchera kumhanya, yakagadzikana pakupisa kwakanyanya, inochengetedza dura, uye inoenderana nenharaunda.

Muna Kukadzi 2022, Sinopec's Bazhong 1HF tsime, iri muJurassic rwizi sandstone mafuta uye gasi reservoir, yakaronga nehunyanzvi "kutsemuka, imbibition, uye kuvharika-mukubatanidza" dhizaini dhizaini. Iyi nzira yakagadziridzwa kuti igadzirise hunhu hwemadhishi erwizi chiteshi chejecha reservoirs uye yakakwirira kuumbwa kumanikidza coefficients. Iyo yakagadziridzwa fracturing tekinoroji, iyo inosanganisira "yakasimba yekucheka + yenguva plugging uye diversion + yakakwirira-yakasimba jecha yekuwedzera + imbibition mafuta ekuwedzera," zvakanyanya kusimudzira kuyerera kwemafuta epasi pevhu uye gasi uye yakamisa modhi nyowani yekuputsika, ichipa chirevo chehombe- kutsemuka kwematsime akachinjika.

Youzhuo's high-temperature fluid kurasikirwa additive, high-temperature anti-collapse plugging agent, uye high-temperature flow type regulator mune fracturing fluid inokunda kudzvinyirirwa uye kurasikirwa kwemvura kunokonzerwa nekuumbwa kwepore pressure, wellbore stress, uye simba redombo. Iyo yakakosha gel plugging tekinoroji, inotorwa kubva kuSouthwest Petroleum University, inobvumira iyo yakakosha gel kuti imire kuyerera mushure mekupinda mukurasikirwa, kuzadza mafractures uye nzvimbo dzisina chinhu, ichigadzira "gel plug" inoparadzanisa yemukati yekugadzira fluid kubva mutsime remvura. Iyi tekinoroji inoshanda zvakanyanya pakudonha kwakanyanya muakatyoka, porous, uye akatyoka maumbirwo nekurasikirwa kwemvura yakakura uye mashoma ekudzoka mavhoriyamu.

Musi waChivabvu 30, 2023, na11:46 AM, Tarim Oilfield yeChina National Petroleum Corporation (CNPC) yakatanga kuchera patsime reShendi Teke 1, zvichiratidza kutanga kwerwendo rwekuongorora hunyanzvi hwakadzama hwe geological uye engineering sainzi pakadzika kusvika. 10,000 mamita. Iyi inguva yenhoroondo yeinjiniya yepasi yakadzika yeChina, zvichiratidza budiriro huru muhunyanzvi hwekuongorora nyika yakadzika uye kutanga kwe "10,000-metres era" mukugona kuchera.

Tsime reShendi Teke 1 riri muShaya County, Aksu Prefecture, Xinjiang, mumoyo weTaklamakan Desert. Iyo yakakosha "yakadzika pasi purojekiti" neCNPC muTarim Oilfield, padyo neFuman yakadzika mafuta uye gasi nzvimbo, iyo ine hudzamu hwe8,000 metres uye inochengeterwa bhiriyoni imwe matani. Tsime rine hudzamu hwakagadzirwa hwemamita 11,100 uye nguva yakarongwa yekuchera uye kupedza kwemazuva 457. Musi wa4 Kurume 2024, kudzika kwekuchera kweShendi Teke 1 kwakapfuura 10,000 metres, zvichiita kuti rive rechipiri pasi rose uye reAsia tsime rekutanga rakamira kupfuura uku kudzika. Ichi chiitiko chakakosha chinoratidza kuti China yakazvimiririra kukunda matambudziko ehunyanzvi ane chekuita nekuchera matsime akadzika kwazvo ehukuru uhu.

Kuchera pakadzika kwe10,000 metres ndeimwe yeminda yakaoma kwazvo muoiri uye gasi engineering tekinoroji, ine akawanda ehunyanzvi mabhodhoro. Icho zvakare chiratidzo chakakosha chenyika yeinjiniya tekinoroji uye kugona kwemidziyo. Kutarisana nekupisa kwekudzikira kwekudzika uye mamiriro ekumanikidza, kufambira mberi kwakakosha kwakaitwa mumvura yekuchera-yepamusoro-tembiricha, mota dzinodzivirira kudziya kwepamusoro, uye matekinoroji ekuchera. Mabhindauko akawanikwa zvakare mumusimboti sampling uye tambo yekutema matanda, ekupedzisira-yakanyanya-kudzvanya fracturing marori ane 175 MPa simba, uye fracturing fluid michina, iyo yakabudirira kuedzwa pa-saiti. Zviitiko izvi zvakakonzera kugadzirwa kwematekinoroji akakosha ekuchera uye kuchera kwakachengeteka uye kupedzwa kwematsime akadzika kwazvo.

Muchibhorani chemvura inoshandiswa muprojekiti iyi, chaiyo yepamusoro-yekushisa, yakakwirira-kudzvinyirira nharaunda yakagadziriswa nekugadzirwa kwepamusoro-soro kurasikirwa kwemvura inoderedza uye corrosion inhibitors inochengetedza yakanakisa rheological properties pasi pekushisa kwepamusoro uye zviri nyore kugadzirisa nekuchengetedza. Clay control additives yakawedzerawo kudonhedza kwemvura yevhu pasi pe-ultra-high tembiricha mamiriro, kuvandudza kuchinjika uye kugadzikana kwemvura yekuchera.

Jimusar shale oiri ndiyo yekutanga yeChina yenyika terrestrial shale oiri kuratidzira nzvimbo, iri kumabvazuva kweJunggar Basin. Inobata nzvimbo ye1,278 square kilometers uye ine inofungidzirwa zviwanikwa zvekuchengetedza matani 1.112 bhiriyoni. Muna 2018, kukura kwakakura kweJimusar shale mafuta kwakatanga. Muchikamu chekutanga, Xinjiang Jimusar National Terrestrial Shale Oiri Demonstration Zone yakagadzira 315,000 matani emafuta e shale, ichiisa nhoroondo nyowani. Nzvimbo yekuratidzira iri kukurumidza kuedza kuwedzera matura emafuta e shale uye kugadzirwa, nehurongwa hwekupedzisa matsime e100 ekuchera uye 110 matsime ekutsemuka panosvika 2024.

Mafuta eShale, ari oiri akasungirirwa padombo reshale kana mukati memafashama ayo, ndeimwe yemhando dzakaomesesa dzemafuta kuburitsa. Xinjiang ine hupfumi hwe shale mafuta zviwanikwa zvine tarisiro yakakura yekuongorora nekusimudzira. China yakaratidza zviwanikwa zvemafuta e shale senzvimbo yakakosha yekutsiva oiri mune ramangwana. Wu Chengmei, injiniya wechipiri paGeological Research Center yeJiqing Oilfield Operations Area muXinjiang Oilfield, anotsanangura kuti Jimusar shale oiri inowanzovigwa anopfuura 3,800 metres pasi pevhu. Kuvigwa kwakadzika uye kunyanya kuderera kwemvura kunoita kuti kudhirowa kuve kwakaoma sekubvisa mafuta kubva pawhetstone.

Kuvandudzwa kwemafuta emushale ekuChina kunowanzotarisana nezvinetso zvina zvikuru: chokutanga, oiri yacho inorema zvishoma, zvichiita kuti zviome kuyerera; chechipiri, mavara anotapira maduku uye akaoma kufanotaura; chechitatu, ivhu rakakwirira rinoita kuti fracturing iome; chechina, kugovera kunopesana, kuomesa mabasa. Izvi zvinhu zvakagara zvichidzora hukuru-hukuru uye hunobudirira kusimudzira kweterrestrial shale oiri muChina. Mupurojekiti, kurapa fracturing flowback fluid, chiwedzerwa chitsva chinoshandiswa kuderedza kusvibiswa uye kudzoreredza mvura, ichichidzosera kuita fracturing fluid kuti ishandiswezve. Iyi nzira yakaedzwa pamatsime mapfumbamwe muna 2023 nemhedzisiro yakanaka. Kubva muna Chikumi 2024, chirongwa ichi chinoronga kushandisa iyo yakagadziridzwa fracturing fluid mune yakakura-scale fracturing operation.

Kuumbwa kukuru kwepurojekiti kunosanganisira marasha seams, grey uye brown mudstone zvikamu, izvo zvimiro zvinonzwa mvura. MuJimusar shale mafuta block, iyo yakavhurika-gomba chikamu chechipiri tsime chakareba, uye kuumbwa kunyura nguva inowedzerwa. Kana madhaka emvura akashandiswa, kuputsika uye kusagadzikana zvinogona kuitika, asi mafuta-based drilling fluids haakonzeri hydration madhara. Oiri-mu-mvura emulsion yekuchera zvinwiwa, kana yakagadzikana, zvakare haikonzeri hydration mhedzisiro, saka mafuta-based drilling fluid haagadziri hydration kuzvimba kumanikidza. Kutsvakurudza kwakakonzera kugamuchirwa kwemafuta-based mud system, ine mitemo ye-anti-collapse uye matanho sezvinotevera: 1. Chemical inhibition: Kudzora chiyero chemafuta-mvura pamusoro pe80: 20 kuderedza kupindira kwechikamu chemvura mukuumbwa, kudzivirira zvinobudirira. kuzvimba uye kudonha kwemarasha seams uye zvakanyanya-sensitive maumbirwo emvura. 2. Physical plugging: Kuwedzera uremu maajenti senge calcium zvinhu pachine nguva mune isina kusimba maumbirwo ekusimudzira kuumbwa-kuremerwa-kutakura simba uye kudzivirira zvakanaka kuvuza. 3. Mechanical support: Kudzora density pamusoro pe1.52g/cm³, zvishoma nezvishoma kuwedzera density kumuganhu wekugadzira we1.58g/cm³ muchikamu chekuvaka-up. Weighting agents anogadzirwa neYouzhu Kambani vanogona kuwana mhedzisiro yavanoda, kuve nechokwadi chekupedzwa kwakanaka uye kwakabudirira kwekuchera uye kupedzisa mapurojekiti.