Oilfield Chemical Additives Application Cases

Xyoo 2022, nyob rau hauv lub ntsej muag ntawm qhov cuam tshuam ntawm COVID-19 kev sib kis, Northwest Oilfield Well Completion Management Center tau ua tiav 24 txoj haujlwm, suav nrog cov cuab yeej siv roj zoo thiab cov roj txhaws cov yeeb nkab ntxuav, txuag cov nqi ntawm 13.683 lab yuan.

Thaum lub sij hawm siv cov kav dej, cov yeeb nkab txoj kab uas hla ntawm cov yeeb nkab tau nce zuj zus vim qhov cuam tshuam ntawm wax, polymers, thiab ntsev, txo cov roj crude thiab cuam tshuam rau cov roj crude. Yog li ntawd, cov tuam txhab drilling feem ntau ntxuav cov kav dej ib xyoos ib zaug. Tom qab kho cov weld seams ntawm cov yeeb nkab txuas, nws yog ib qho tsim nyog los ntxuav cov kav dej.

Hauv cov xwm txheej dav dav, cov kav hlau siv los ua cov kav dej muaj xeb ntawm ob sab hauv thiab sab nrauv. Yog tias tsis tau ntxuav, qhov no yuav paug cov roj hydraulic tom qab siv, cuam tshuam rau kev ua haujlwm ntawm cov khoom siv hydraulic. Yog li ntawd, nws yog tsim nyog los tshem tawm cov xeb nyob rau hauv lub puab nto ntawm cov kav dej los ntawm acid ntxuav. Kev ntxuav cov kua qaub kuj tseem tuaj yeem tshem tawm cov xeb ntawm cov kav dej sab nraud, uas yog qhov zoo rau kev siv cov xim pleev xim rau hauv cov kav dej sab nrauv, muab kev tiv thaiv kev tiv thaiv ntev ntev. Kev ntxuav cov kua qaub feem ntau yog ua los ntawm kev siv cov kua qaub nrog cov concentration ntawm 0% mus rau 15%. Tuam txhab Youzhu, los ntawm kev muab cov khoom lag luam corrosion inhibitor: UZ CI-180, kub resistant acidizing corrosion inhibitor rau oilfield siv. Nyob rau hauv cov txheej txheem ntawm acidizing los yog pickling, cov kua qaub yuav corrode cov hlau, thiab nyob rau hauv high kub, tus nqi thiab ntau yam ntawm corrosion yuav zoo heev, yog li ntawd, nyob rau hauv lub oilfield ntau lawm, kev tiv thaiv corrosion ntawm high-temperature yeeb nkab yog ib qho tseem ceeb tshwj xeeb, uas tsis yog tsuas yog cuam tshuam nrog cov txiaj ntsig ntawm kev siv roj av, tab sis kuj tseem cuam tshuam nrog kev ruaj ntseg ntau lawm. Cov qib ntawm cov kua qaub yaig ntawm cov kav dej thiab cov khoom siv yog nyob ntawm lub sijhawm sib cuag, acid concentration thiab kub, thiab lwm yam UZ CI-180 muaj qhov kub thiab txias tsis kam, thiab kub txog 350 ° F (180 ° C), corrosion Cov nyhuv ntawm cov kua qaub ntawm cov hlau ntawm qhov kub thiab txias hauv qab ntawm qhov dej tuaj yeem txo qis heev los ntawm kev ntxiv UZ CI-180 rau cov kua qaub sib tov. Youzhu tau txais kev lees paub siab los ntawm Northwest Oilfield Management Center rau nws cov haujlwm hauv kev tu cov yeeb nkab, kev tsim cov kua dej drilling, thiab cov khoom siv tu.

Nyob rau ntawm Dong San Road hauv Dongying City, Fengye 1-10HF qhov dej yog thawj cov roj shale kab rov tav qhov dej kom tawg los ntawm 20-hnub drilling voj voog barrier, ua tiav 24 hnub ua ntej lub sijhawm. Nws yog ib qho ntawm peb lub teb chaws shale roj ua qauv pom kev pom zoo los ntawm National Energy Administration thiab thawj lub teb chaws ua qauv qhia cheeb tsam rau continental txhaum basin shale roj hauv Suav teb. Los ntawm kev ua tiav qhov dej 24 hnub ua ntej lub sijhawm, ntau tshaj 10 lab yuan tau txais kev cawmdim hauv cov nqi.

Vim tias qhov sib thooj ntawm qhov chaw nyob ze tau tawg tsuas yog 400 metres deb thiab qhov sib thooj ntawm cov pob zeb pob zeb ciam teb, Fengye 1-10HF zoo ntsib kev pheej hmoo ntawm dej nkag, dej ntws, thiab dej poob. Tsis tas li ntawd, qhov kub thiab txias ntawm qhov dej hauv qab tau teeb meem rau ntau yam twj paj nruag. Pab pawg ua haujlwm tau tsom mus rau engineering technology txhawb nqa thiab daws cov teeb meem thev naus laus zis tseem ceeb. Lawv txuas ntxiv daws cov kev txwv xws li qhov nyuaj hauv kev kwv yees qhov muaj zog heterogeneity qab zib me ntsis, kev txwv ntawm cov cuab yeej nyob rau hauv qhov kub thiab txias, thiab kev sib koom ua ke ntawm cov kua dej poob thiab nkag mus.

Lawv tsim thiab siv cov av nkos hluavtaws los txhim kho fluidity. Ntawm cov no, tam sim no drilling kua additive TF FL WH-1 Cement Fluid-poob Additives, tsim los ntawm Youzhu tuaj yeem tsim cov yeeb yaj kiab zoo nyob rau saum npoo ntawm shale wellbore, tiv thaiv cov dej ntws tawm hauv qhov tsim, TF FL WH- 1 yog tsim los siv rau hauv qhov dej nrog hauv qab-qhov circulating kub (BHCTs) nyob rau hauv 60℉ (15.6 ℃) rau 400℉ (204 ℃).

TF FL WH-1 muab API kua tsis tswj hauv qab 36cc / 30min thaum tswj cov pa roj los ntawm kev tsim. Feem ntau 0.6% mus rau 2.0% BWOC yog xav tau nyob rau hauv feem ntau slurries. Nws feem ntau yog siv los ntawm ntau npaum li cas ntawm 0.8% BWOCthereby tiv thaiv lub reservoir thiab stabilizing lub qhov dej. Qhov no zoo seals shale pores thiab microfractures, tiv thaiv drilling kua filtrate los ntawm invading thiab txo cov kis ntawm pore siab, ho txhim khu lub inhibition ntawm lub drilling kua.

Cov txiaj ntsig ntawm daim ntawv thov teb qhia tau hais tias cov dej ua haujlwm zoo hauv cov dej drilling yog qhov muaj zog heev, ua rau cov neeg kho tshuab drilling ceev, ruaj khov ntawm qhov kub thiab txias, tiv thaiv lub reservoir, thiab yog ib puag ncig zoo.

Thaum Lub Ob Hlis 2022, Sinopec's Bazhong 1HF qhov zoo, nyob rau hauv Jurassic River channel sandstone roj thiab roj reservoir, innovatively npaj "fracturing, imbibition, thiab zoo kaw-hauv kev koom ua ke" fracturing tsim lub tswv yim. Txoj kev mus ze no tau tsim los daws cov yam ntxwv ntawm cov dej ntws ntau heev channel sandstone pas dej thiab siab tsim kev coefficients. Lub optimized fracturing thev naus laus zis, uas suav nrog "nruj txiav + ib ntus ntsaws thiab hloov pauv + kev siv xuab zeb ntxiv + imbibition roj txhim kho," ua kom muaj peev xwm txaus ntawm cov roj av hauv av thiab cov roj av thiab tsim cov qauv tawg tshiab, muab cov ntaub ntawv siv rau loj- scale fracturing ntawm kab rov tav qhov dej.

Youzhuo's high-temperature fluid poob additive, high-temperature anti-collapse plugging agent, thiab high-temperature flow type regulator in the fracturing fluid overcome the pressure and fluid poob cov nyom los ntawm kev tsim pore siab, wellbore stress, thiab pob zeb muaj zog. Qhov tshwj xeeb gel plugging tshuab, muab los ntawm Southwest Petroleum University, tso cai rau cov gel tshwj xeeb kom tsis txhob ntws tom qab nkag mus rau hauv cov txheej txheem poob, sau cov pob txha thiab qhov chaw tsis muaj dab tsi, tsim "gel plug" uas cais cov dej tsim sab hauv los ntawm cov dej hauv lub qhov dej. Cov tshuab no muaj txiaj ntsig zoo rau kev xau loj hauv kev tawg, ntxeem tau, thiab tawg tsim nrog cov dej tsis zoo thiab qhov ntim tsawg kawg nkaus.

Thaum Lub Tsib Hlis 30, 2023, ntawm 11:46 AM, Tarim Oilfield ntawm Tuam Tshoj National Petroleum Corporation (CNPC) pib drilling ntawm Shendi Teke 1 qhov dej, qhia txog kev pib taug kev los tshawb txog ultra-dav geological thiab engineering sciences ntawm qhov tob mus txog. 10,000 meters. Qhov no yog lub sijhawm keeb kwm rau Tuam Tshoj txoj kev sib sib zog nqus hauv ntiaj teb engineering, qhia txog kev ua tiav loj hauv lub teb chaws txoj kev tshawb nrhiav lub ntiaj teb sib sib zog nqus thiab pib ntawm "10,000-meter era" hauv kev muaj peev xwm drilling.

Shendi Teke 1 qhov dej nyob hauv Shaya County, Aksu Prefecture, Xinjiang, nyob rau hauv plawv ntawm Taklamakan suab puam. Nws yog qhov tseem ceeb "qhov project tob hauv ntiaj teb" los ntawm CNPC nyob rau hauv Tarim Oilfield, nyob ib sab ntawm Fuman ultra-dav roj thiab roj cheeb tsam, uas muaj qhov tob ntawm 8,000 meters thiab reserves ntawm ib txhiab tons. Lub qhov dej tau tsim qhov tob ntawm 11,100 meters thiab lub sijhawm npaj ua tiav ntawm 457 hnub. Thaum Lub Peb Hlis 4, 2024, qhov tob tob ntawm Shendi Teke 1 tau tshaj 10,000 meters, ua rau lub ntiaj teb thib ob thiab Asia thawj qhov dej ntsug kom dhau qhov tob no. Qhov tseem ceeb no qhia tau hais tias Tuam Tshoj nws tus kheej tau kov yeej cov kev cov nyom uas cuam tshuam nrog kev khawb qhov tob tob ntawm qhov loj no.

Drilling ntawm qhov tob ntawm 10,000 meters yog ib qho nyuaj tshaj plaws hauv kev siv roj thiab roj engineering, nrog rau ntau yam kev tsis sib haum xeeb. Nws kuj yog ib qho tseem ceeb qhia txog lub teb chaws engineering technology thiab cov cuab yeej muaj peev xwm. Tig qhov kub thiab txias ntawm qhov kub thiab txias, qhov kev nce qib tseem ceeb tau ua rau hauv cov dej kub hauv qhov dej kub, cov cua kub-resistant motors, thiab cov kev taw qhia drilling technologies. Kev tawg kuj tau ua tiav hauv cov qauv qauv thiab cov cuab yeej siv cable, cov tsheb thauj khoom hnyav hnyav nrog lub peev xwm 175 MPa, thiab cov khoom siv dej tawg, uas tau ua tiav kev sim ntawm qhov chaw. Cov kev txhim kho no tau coj mus rau kev tsim ntau yam thev naus laus zis tseem ceeb rau kev nyab xeeb thiab ua haujlwm zoo drilling thiab ua tiav cov dej tob tob.

Nyob rau hauv lub drilling kua system siv nyob rau hauv qhov project no, tshwj xeeb high-temperature, high-pressure ib puag ncig tau hais nrog txoj kev loj hlob ntawm superior kua poob reducers thiab corrosion inhibitors uas tuav zoo heev rheological zog nyob rau hauv high kub thiab yog ib qho yooj yim mus kho thiab tswj. Av nplaum tswj additives kuj txhim kho lub peev xwm dewatering ntawm av nplaum hais nyob rau hauv ultra-siab kub tej yam kev mob, kev txhim kho adaptability thiab stability ntawm drilling kua.

Jimusar shale roj yog Tuam Tshoj thawj lub teb chaws terrestrial shale roj ua qauv qhia cheeb tsam, nyob rau sab hnub tuaj ntawm lub Junggar Basin. Nws npog thaj tsam ntawm 1,278 square kilometers thiab muaj kwv yees cov peev txheej ntawm 1.112 billion tons. Hauv 2018, kev loj hlob loj ntawm Jimusar shale roj tau pib. Hauv thawj peb lub hlis twg, Xinjiang Jimusar National Terrestrial Shale Oil Demonstration Zone tsim 315,000 tons ntawm shale roj, teeb tsa cov ntaub ntawv keeb kwm tshiab. Thaj chaw ua qauv qhia tau nrawm rau kev ua kom cov roj shale khaws cia thiab tsim khoom, nrog rau kev npaj ua kom tiav 100 qhov dej thiab 110 qhov dej tawg los ntawm 2024.

Shale roj, uas yog cov roj txuas nrog shale pob zeb los yog hauv nws cov fissures, yog ib qho nyuaj tshaj plaws ntawm cov roj los rho tawm. Xinjiang muaj cov khoom siv roj nplua nuj shale nrog kev cia siab dav rau kev tshawb nrhiav thiab kev loj hlob. Tuam Tshoj tau txheeb xyuas cov peev txheej roj shale ua thaj chaw tseem ceeb rau kev hloov roj rau yav tom ntej. Wu Chengmei, tus kws tshaj lij thib ob ntawm Geological Research Center ntawm Jiqing Oilfield Operations Area hauv Xinjiang Oilfield, piav qhia tias Jimusar shale roj feem ntau faus ntau dua 3,800 meters hauv av. Qhov sib sib zog nqus faus thiab tshwj xeeb tshaj yog tsis tshua muaj permeability ua extraction nyuaj li extracting roj los ntawm ib tug whetstone.

Tuam Tshoj txoj kev loj hlob ntawm cov roj av av shale feem ntau ntsib plaub qhov kev sib tw loj: ua ntej, cov roj kuj hnyav, ua rau nws nyuaj rau ntws; qhov thib ob, qhov chaw qab zib me me thiab nyuaj rau kwv yees; thib peb, cov ntsiab lus av nplaum siab ua rau tawg nyuaj; thib plaub, kev faib khoom tsis sib xws, ua haujlwm nyuaj. Cov xwm txheej no tau txwv ntev ntev rau kev loj hlob thiab kev loj hlob zoo ntawm cov roj av shale hauv Suav teb. Hauv qhov project, txhawm rau kho cov kua dej ntws rov qab, cov tshuaj ntxiv tshiab yog siv los txo cov pa phem thiab rov ua dua cov kua dej, tig rov qab rau hauv cov kua dej tawg rov qab siv dua. Txoj kev no tau sim ntawm cuaj qhov dej hauv xyoo 2023 nrog cov txiaj ntsig zoo. Raws li lub Rau Hli 2024, qhov phiaj xwm npaj yuav siv cov kua dej tawg rov ua dua tshiab hauv kev ua haujlwm loj loj.

Lub ntsiab tsim ntawm qhov project muaj cov thee seams, grey thiab xim av mudstone seem, uas yog dej-rhiab formations. Nyob rau hauv Jimusar shale roj thaiv, qhov qhib-qhov ntawm qhov dej thib ob yog ntev, thiab lub sij hawm tsim cov dej tau txuas ntxiv. Yog tias siv cov av nkos dej, qhov sib tsoo thiab tsis ruaj khov, tab sis cov kua roj-raws li drilling tsis ua rau muaj kev cuam tshuam dej. Roj-hauv-dej emulsion drilling kua, thaum ruaj khov, kuj tsis ua rau muaj kev cuam tshuam hydration, yog li roj-raws li drilling kua tsis tsim hydration o pressures. Kev tshawb fawb tau coj mus rau kev txais yuav cov av nkos uas muaj roj, nrog rau kev tiv thaiv kev sib tsoo thiab kev ntsuas raws li hauv qab no: 1. Tshuaj inhibition: Tswj cov roj-dej piv saum toj no 80:20 kom txo cov dej theem ntxeem tau rau hauv kev tsim, tiv thaiv zoo. o thiab tawg ntawm thee seams thiab dej-rhiab heev formations. 2. Plug lub cev: Ntxiv cov khoom hnyav xws li cov khoom siv calcium ua ntej hauv kev tsim tsis muaj zog los txhim kho kev tsim cov kabmob siab thiab tiv thaiv kom zoo. 3. Kev txhawb nqa tshuab: Kev tswj qhov ceev tshaj 1.52g / cm³, maj mam nce qhov ceev mus rau qhov tsim txwv ntawm 1.58g / cm³ nyob rau hauv seem tsim. Cov neeg ua haujlwm hnyav uas tsim los ntawm Youzhu Tuam Txhab tuaj yeem ua tiav cov txiaj ntsig xav tau, kom ntseeg tau tias kev ua tiav ntawm kev ua tiav thiab kev ua tiav zoo.