Wamba kubowola kolala ndi zozungulira mtanda gawo, pakati ali dzenje madzi, makulidwe khoma ndi lalikulu, nozzle ndi yaying'ono, kulemera kwa unit kutalika ndi wamkulu kuposa kukula kwa kubowola chitoliro pafupifupi 4- 5 nthawi. kubowola kolala ndi processing ulusi mwachindunji pa chitoliro thupi , koma ena a iwo amagwiritsanso ntchito m'malo olowa.
Spiral kubowola kolala ndi mtundu wa petroleum pobowola chida .Mtundu wa kubowola kolala amatha kuteteza kusiyana kuthamanga m'ndende zida pobowola. Mitsempha yozungulira imathandizira kuti matope aziyenda momasuka mozungulira kolala yobowola kuti agwiritse ntchito kuthamanga kwapakati kuti apewe kutsekeka kwapang'onopang'ono kuti apewe kuphatikizika kosiyana. Malo okhudzana ndi khoma la chitsime amatha kudulidwa kuti athe kuchepetsa kuthekera kopanga kutsekereza kutsekeka kosiyana. Mitsempha yozungulira imathandizira kuti matope aziyenda momasuka mozungulira kolala yobowola kuti agwiritse ntchito kuthamanga kwapakati kuti apewe kutsekeka kwapang'onopang'ono kuti apewe kuphatikizika kosiyana. Malo okhudzana ndi khoma la chitsime akhoza kudulidwa kuti athe kuchepetsa kuthekera kwa kupanga kusiyana kwa kupanikizika kwapakati. Kulemera kwa kolala yobowola kozungulira ndi 4-6% yocheperako kuposa kolala yobowola yozungulira.
Non-Maginito Drill Collar: Non-magnetic Drill collars amapangidwa kuchokera ku zinthu zopanda maginito zobowola kolala zokhala ndi mphamvu zochepa pophatikiza kusanthula kwamankhwala komwe kumayenderana ndi njira yopangira nyundo yozungulira yokhala ndi mphamvu yotsika ya maginito. titha kupereka kutalika kuchokera ku 10 mpaka 42 mapazi ndi m'mimba mwake kuchokera ku 31/8 "mpaka 11'.
Kukula | OD(mm) | ID (mm) | Kodi | Ulusi | Utali(mm) | Kulemera (kg) |
3-1/8 | 79.4 | 31.8(1-1/4) | NC23-31 | NC23 | 9140 | 298 |
3-1/2 | 88.9 | 38.1(1-1/2) | NC26-35 | NC26 | 9140 | 364 |
4-1/8 | 104.8 | 50.8(2) | NC31-41 | NC31 | 9140/9450 | 474/490 |
4-3/4 | 120.6 | 50.8(2) | NC35-47 | NC35 | 9140/9450 | 674/697 |
5 | 127 | 57.2 (2-1/4) | NC38-50 | NC38 | 9140/9450 | 725/749 |
6 | 152.4 | 57.2 (2-1/4) | Mtengo wa NC44-60 | NC44 | 9140/9450 | 1125/1163 |
71.4 (2-13/16) | Mtengo wa NC44-60 | 9140/9450 | 1022/1056 | |||
6-1/4 | 158.8 | 57.2 (2-1/4) | Mtengo wa NC44-62 | NC44 | 9140/9450 | 1237/1279 |
71.4 (2-13/16) | Mtengo wa NC46-62 | 9140/9450 | 1134/1172 | |||
6-1/2 | 165.1 | 57.2 (2-1/4) | Mtengo wa NC46-65 | NC46 | 9140/9450 | 1352/1398 |
71.4 (2-13/16) | Mtengo wa NC46-65 | NC50 | 9140/9450 | 1249/1291 | ||
6-3/4 | 171.4 | 57.2 (2-1/4) | NC46-67 | NC46 | 9140/9450 | 1471/1521 |
7 | 177.8 | 57.2 (2-1/4) | NC50-70 | NC50 | 9140/9450 | 1597/1651 |
71.4 (2-13/16) | NC50-70 | 9140/9450 | 1494/1545 | |||
7-1/4 | 184.2 | 71.4 (2-13/16) | NC50-72 | NC50 | 9140/9450 | 1625/1680 |
7-3/4 | 196.8 | 71.4 (2-13/16) | NC56-77 | NC56 | 9140/9450 | 1895/1960 |
8 | 203.2 | 71.4 (2-13/16) | NC56-80 | NC56/6-5/8REG | 9140/9450 | 2040/2109 |
8-1/4 | 209.6 | 71.4 (2-13/16) | 6-5 / 8REG | 6-5 / 8REG | 9140/9450 | 2188/2263 |
9 | 228.6 | 71.4 (2-13/16) | NC61-90 | NC61 | 9140/9450 | 2658/2748 |
9-1/2 | 241.3 | 76.2 (2-13/16) | 7-5 / 8REG | 7-5 / 8REG | 9140/9450 | 2954/3054 |
9-3/4 | 247.6 | 76.2 (3) | NC70-97 | NC70 | 9140/9450 | 3127/3234 |
10 | 254 | 76.2 (3) | NC70-100 | NC70 | 9140/9450 | 3308/3421 |
11 | 279.4 | 76.2 (3) | 8-5 / 8REG | 8-5 / 8REG | 9140/9450 | 4072/4210 |
Kuuma kosiyanasiyana kwa 285 mpaka 341 BHN ndi mphamvu ya Charpy ya 40 ft-lbs imatsimikiziridwa kuti igawidwe mofananamo mfundo za 16 pazigawo zilizonse zodutsa kutentha;
Zolumikizira zimakutidwa ndi phosphate pambuyo popanga makina kuti ateteze ulusi kuzinthu zowononga komanso kuteteza kuphulika popanga koyamba;
Mizu ya ulusi imakulungidwa mozizira pamalumikizidwe a API;
Zoteteza zachitsulo zopanikizidwa zimaperekedwa kwa kolala yonse yobowola yomwe ili ndi zolumikizira wamba.
Njira yochepetsera nkhawa. Zothandizira kupsinjika pa pini ya API ndi kulumikizana kwa bokosi kuti muchepetse kupsinjika kwambiri kotero kumapangitsa mphamvu yopindika kuzungulira malo olumikizirana.
Kugubuduzika kozizira kwa mizu ya ulusi kwawonetsa zopindulitsa pakuwongolera kutopa kwamalumikizidwewo pochepetsa kuyambitsa kwa crack.
Hardbanding. Kumanga kolimba pamalo otsetsereka kapena pamwamba pa mapini kapena pamapewa kumakulitsa moyo wautumiki wa makolala obowola. Itha kugwiritsidwanso ntchito pamasinthidwe onenedwa ndi makasitomala. Kumanga molimba m'malo otsetsereka kapena pamwamba pa mapini kapena pamapewa kumakulitsa moyo wautumiki wa makolala obowola. Itha kugwiritsidwanso ntchito pamasinthidwe onenedwa ndi makasitomala.
Malo otsetsereka ndi elevator. Ma radius apamwamba a recess ya elevator ndi ozizira kuti apititse patsogolo moyo wazinthu. Malo otsetsereka ndi ma elevator amapangidwa motsatira API Spec 7-1.