Downhole Jar / Drilling Jars (Mechanical / Hydraulic)
1. [Drilling]
Cov cuab yeej siv tshuab siv lub qhov downhole los xa cov kev cuam tshuam rau lwm qhov chaw downhole, tshwj xeeb tshaj yog thaum cov khoom ntawd daig. Muaj ob hom thawj, hydraulic thiab mechanical hub. Txawm hais tias lawv cov qauv tsim txawv heev, lawv cov haujlwm zoo sib xws. Lub zog yog khaws cia rau hauv lub drillstring thiab dheev tso tawm los ntawm lub thawv thaum nws hluav taws kub. Lub hauv paus ntsiab lus zoo ib yam li tus kws ntoo siv rauj. Kinetic zog yog khaws cia rau hauv lub rauj thaum nws yog swung, thiab dheev tso tawm mus rau tus ntsia thawv thiab lub rooj tsavxwm thaum lub rauj ntaus tus ntsia thawv. Jars tuaj yeem tsim los tawm tsam, nqis, lossis ob qho tib si. Nyob rau hauv cov ntaub ntawv ntawm jarring saum toj ib tug daig bottomhole los ua ke, lub driller maj mam rub rau ntawm lub drillstring tab sis BHA tsis txav. Txij li thaum sab saum toj ntawm lub drillstring yog txav mus, qhov no txhais tau hais tias lub drillstring nws tus kheej yog stretching thiab khaws cia lub zog. Thaum lub rhawv zeb ncav cuag lawv qhov chaw tua hluav taws, lawv cia li cia ib ntu ntawm lub hub txav axially txheeb ze rau ib thib ob, raug rub tawm sai heev nyob rau hauv tib txoj kev uas ib qho kawg ntawm lub caij nplooj ntoos hlav stretched thaum tso tawm. Tom qab ob peb nti ntawm kev txav mus los, qhov kev txav no slams rau hauv lub xub pwg steel, imparting ib qho kev cuam tshuam. Ntxiv nrog rau cov tshuab thiab hydraulic versions, rhawv zeb yog cais raws li drilling hub los yog nuv ntses hub. Kev ua haujlwm ntawm ob hom yog qhov zoo sib xws, thiab ob qho tib si xa tawm kwv yees li qhov cuam tshuam zoo ib yam, tab sis lub hub drilling yog tsim xws li tias nws tuaj yeem tiv taus lub teb thiab vibrational loading cuam tshuam nrog drilling.
2. [Zoo tiav]
Ib lub cuab yeej downhole uas yog siv los muab lub tshuab hnyav lossis cuam tshuam rau lub tshuab downhole lub rooj sib txoos. Feem ntau siv rau hauv kev ua haujlwm nuv ntses kom tsis pub cov khoom daig, rhawv zeb muaj nyob rau hauv ntau qhov ntau thiab tsawg thiab muaj peev xwm xa cov khoom thauj khoom nce lossis nqis. Qee cov cuab yeej slickline sib dhos siv jars los khiav cov cuab yeej uas muaj cov pins los yog lub caij nplooj ntoo hlav hauv lawv txoj kev ua haujlwm.
3. [Kev Ua Haujlwm Zoo thiab Kev Pabcuam]
Cov cuab yeej downhole siv los xa cov kev cuam tshuam rau cov cuab yeej hlua, feem ntau yog siv cov cuab yeej downhole los yog kom tshem tawm cov hlua daig. Cov hub ntawm cov qauv sib txawv thiab cov qauv kev ua haujlwm feem ntau suav nrog slickline, coiled tubing thiab cov cuab yeej ua haujlwm. Cov slickline jars yooj yim suav nrog kev sib dhos uas tso cai rau qee qhov kev mus ncig dawb hauv lub cuab yeej kom tau txais lub zog rau qhov cuam tshuam uas tshwm sim thaum kawg ntawm kev mob stroke. Cov hub loj dua, ntau txoj hauv kev rau coiled tubing lossis cov hlua ua haujlwm sib txuas ua ke nrog kev mus los lossis kev tua hluav taws uas tiv thaiv lub hub los ntawm kev khiav haujlwm kom txog thaum qhov kev xav tau raug siv rau txoj hlua, yog li optimizing qhov cuam tshuam. Cov hub yog tsim los rov pib dua los ntawm kev siv txoj hlua yooj yim thiab muaj peev xwm rov ua haujlwm lossis raug rho tawm haujlwm ua ntej rov qab los ntawm qhov dej.
Rooj 2Jarring Loads ntawm Drilling Jarchav tsev:KN
| qauv | upward jarring load | Up jarring xauv lub zog | ex cog downward jarring load | hydraulic load kuaj rub lub zog | Sijhawm ntawmHydraulic ncua |
| JYQ121 Ⅱ | 250 | 200 ± 25 | 120 ± 25 | 220 ±10 | 30～60 |
| JYQ140 | 450 | 250 ± 25 | 150 ± 25 | 300 ±10 | 45～90 |
| JYQ146 | 450 | 250 ± 25 | 150 ± 25 | 300 ±10 | 45～90 |
| JYQ159 | 600 | 330 ± 25 | 190 ± 25 | 370 ±10 | 45～90 |
| JYQ165 | 600 | 330± 25 | 220 ± 25 | 400 ±10 | 45～90 |
| JYQ178 | 700 | 330± 25 | 220 ± 25 | 400 ±10 | 45～90 |
| JYQ197 | 800 | 400 ± 25 | 250 ± 25 | 440 ±10 | 45～90 |
| JYQ203 | 800 | 400 ± 25 | 250 ± 25 | 440 ±10 | 45～90 |
| JYQ241 | 1400 | 460 ± 25 | 260 ± 25 | 480 ±10 | 60～120 |
5. SPECIFICATIONS
| yam | JYQ121 | JYQ140 | JYQ146 | JYQ 159 | JYQ165 |
| ODin | 43/4 ib | 51/2 | 53/4 | 61/4 | 61/2 |
| ID in | 2 | 21/4 | 21/4 | 21/4 | 21/4 |
| Ckev sib txuas API | NC38 | NC38 | NC38 | NC46 | NC50 |
| nce jar strokein | 9 | 9 | 9 | 9 | 9 |
| down jar strokein | 6 | 6 | 6 | 6 | 6 |
Cua ntej
| yam | JYQ178 | JYQ197 | JYQ203 | JYQ241 |
| ODin | 7 | 7 3/4 | 8 | 9 1/2 |
| ID in | 2 3/4 ib | 3 | 23/4 ib | 3 |
| Ckev sib txuas API | NC50 | 6 5/8 REG | 65/8 REG | 7 5/8 REG |
| nce jar strokein | 9 | 9 | 9 | 9 |
| down jar strokein | 6 | 6 | 6 | 6 |
| ua haujlwm torqueft- Ib | 22 000 | 30000 | 36 000 | 50000 |
| max. tensile loadlb | 540 000 ib | 670 000 ib | 670 000 ib | 1200 000 |
| Max. nce jar loadIb | 18 0000 | 224 000 Nws | 224 000 Nws | 315 000 Nws |
| Max. down thawv load Ib | 9 0000 | 100000 | 100000 | 112 000 Nws |
| tag nrho ntevmm | 5256 ib | 5096 ib | ib 5095 | 5300 ib |
| pistoncheeb tsammm2 | 5102 ib | 8796 ib | ib 9170 | 17192 ib |
Cov khoom lag luam ntsig txog
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