Koala Likhola
Ho cheka molala e le karolo e le 'ngoe ea likhoele tsa ho cheka ke li-tubula tsa indasteri tse sebelisoang haholo ho cheka fatše ho fana ka boima ba 'mele bakeng sa ho cheka.E sebelisoa ho kopana le pipe ea ho phunya.Ho na le mefuta e metenya le e spiral haholo-holo.Ts'ebetso ea rona ea tlhahiso e netefalitsoe ho API spec 7-1.Molala oa ho cheka o entsoe ka AISI 4145 H kapa 4145 H Modified alloy steel.Li-bores li ts'oaroa ka tsela e le 'ngoe ho se na phapang.Li-collar tsohle tsa li-drill li phekoloa ka mocheso ka thata ka hare ho 285 ho ea ho 341 BHN, tse tiisitsoeng ka lisenthimithara tse ka tlaase ho holim'a phala.
Li-collars tsa "non-magnetic drill" li fana ka matla le ho thatafala ha li ntse li thibela tšitiso ea makenete e ka senyang bonnete ba lipatlisiso tsa makenete.E entsoe ka thepa e khethehileng ea tšepe e nang le matla a tlaase, thepa e phahameng ea mochine le ho hanyetsa ho phahameng ho senya ho senya.
Re fana ka li-collars tsa ho cheka tse thellang, li- drill collars le li-non-magnetic drill collars;boholo ba tsona ke ho tloha 3-1/8 ho 11 lisenthimithara.Ntle le li-collar tsa ho cheka tafoleng e ka tlase, re ka fana ka li-collar tse ling ka kopo ea bareki.
| Ntho | Lebitso | Spiral kapa Slick | OD | ID | Kopanyo ea lisebelisoa | Bevel bophara ka hare | Lintho tse bonahalang | Bolelele ka kakaretso | |
| in | in | Khokahano | ft | ||||||
| 1 | Kola molaleng | Slick kapa Spiral | 3.1/8 | 1.1/4 | NC26 | 2.3/8″IF | 3 | 4145H | 30 kapa 31 |
| 2 | Kola molaleng | Slick kapa Spiral | 3.1/2 | 1.1/2 | NC26 | 2.3/8″IF | 4145H | 30 kapa 31 | |
| 3 | Kola molaleng | Slick kapa Spiral | 4.1/8 | 2 | NC31-41 | 2.7/8″IF | 3.61/64 | 4145H | 30 kapa 31 |
| 4 | Kola molaleng | Slick kapa Spiral | 4.3/4 | 2 | NC35-47 | 4.33/64 | 4145H | 30 kapa 31 | |
| 5 | Kola molaleng | Slick kapa Spiral | 5 | 2.1/4 | NC38-50 | 3.1/2 ″IF | 4.49/64 | 4145H | 30 kapa 31 |
| 6 | Kola molaleng | Slick kapa Spiral | 6 | 2.1/4 | NC44-60 | 5.11/16 | 4145H | 30 kapa 31 | |
| 7 | Kola molaleng | Slick kapa Spiral | 6 | 2.13/16 | NC44-60 | 5.11/16 | 4145H | 30 kapa 31 | |
| 8 | Kola molaleng | Slick kapa Spiral | 6.1/4 | 2.1/4 | NC44-62 | 5.7/8 | 4145H | 30 kapa 31 | |
| 9 | Kola molaleng | Slick kapa Spiral | 6.1/4 | 2.13/16 | NC46-62 | 4″IF | 5.29/32 | 4145H | 30 kapa 31 |
| 10 | Kola molaleng | Slick kapa Spiral | 6.1/2 | 2.1/4 | NC46-65 | 4″IF | 6.3/32 | 4145H | 30 kapa 31 |
| 11 | Kola molaleng | Slick kapa Spiral | 6.1/2 | 2.13/16 | NC46-65 | 4″IF | 6.3/32 | 4145H | 30 kapa 31 |
| 12 | Kola molaleng | Slick kapa Spiral | 6.3/4 | 2.1/4 | NC46-67 | 4″IF | 6.9/32 | 4145H | 30 kapa 31 |
| 13 | Kola molaleng | Slick kapa Spiral | 7 | 2.1/4 | NC50-70 | 4.1/2 ″IF | 6.31/64 | 4145H | 30 kapa 31 |
| 14 | Kola molaleng | Slick kapa Spiral | 7 | 2.13/16 | NC50-70 | 4.1/2 ″IF | 6.31/64 | 4145H | 30 kapa 31 |
| 15 | Kola molaleng | Slick kapa Spiral | 7.1/4 | 2.13/16 | NC50-72 | 4.1/2 ″IF | 6.43/64 | 4145H | 30 kapa 31 |
| 16 | Kola molaleng | Slick kapa Spiral | 7.3/4 | 2.13/16 | NC56-77 | 7.19/64 | 4145H | 30 kapa 31 | |
| 17 | Kola molaleng | Slick kapa Spiral | 8 | 2.13/16 | NC56-80 | 7.31/64 | 4145H | 30 kapa 31 | |
| 18 | Kola molaleng | Slick kapa Spiral | 8.1/4 | 2.13/16 | 6.5/8″REG | 7.45/64 | 4145H | 30 kapa 31 | |
| 19 | Kola molaleng | Slick kapa Spiral | 9 | 2.13/16 | NC61-90 | 8.3/8 | 4145H | 30 kapa 31 | |
| 20 | Kola molaleng | Slick kapa Spiral | 9.1/2 | 3 | 7.5/8″REG | 8.13/16 | 4145H | 30 kapa 31 | |
| 21 | Kola molaleng | Slick kapa Spiral | 9.3/4 | 3 | NC70-97 | 9.5/32 | 4145H | 30 kapa 31 | |
| 22 | Kola molaleng | Slick kapa Spiral | 10 | 3 | NC70-100 | 9.11/32 | 4145H | 30 kapa 31 | |
| 23 | Kola molaleng | Slick kapa Spiral | 11 | 3 | 8.5/8″REG | 10.1/2 | 4145H | 30 kapa 31 | |
| Hlokomela: | Haeba moreki a e-na le litlhokahalo tse khethehileng, mohlala, motsoako, ho roala ho batang, ho etsa le ho robeha, ho tlama ka thata (ARNCO 100XT ARNCO 300XT joalo-joalo), ho roala ka hare (TK34 TK34PTC2000, joalo-joalo), Pin ea ho Phomola Khatello, Lebokose la Bored Back, Recess ea Elevator, slip Recess ka kopo ikutloe u lokolohile ho ikopanya le rona. | ||||||||
| Non-Magetic Drill Collar | ||
| Kereiti | Matla a Tlase a Tensile | |
| psi | Mpa | |
| 1 | 90000 | 621 |
| 2 | 9000 | 621 |
| 3 | 115000 | 793 |
| **Molala oa ho cheka o sa sebetseng o ka etsoa ho latela moralo oa moreki.Ka kopo, boholo bo sheba boholo ba molala oa boro. | ||
| Spiral Drill Collar | |||||||||
| OD (ka) | 4 3/4 | 6 1/4 | 6 3/4 | 7 1/4 | 7 1/2 | 8 | 9 1/2 | 10 | 11 |
| Botebo ba ho Seha (ka hare) | 7/32 ±1/32 | 9/32 ±1/16 | 5/16 ±1/16 | 11/32 ±1/16 | 11/32 ±1/16 | 3/8 ±1/16 | 13/32 ±3/32 | 7/16 ±3/32 | 15/32 ±3/32 |
| Spiral Pitch (ka) | 38 ±1 | 42 ±1 | 46 ±1 | 64 ±1 | 64 ±1 | 68 ±1 | 72 ±1 | 76 ±1 | 80 ±1 |
| ** Molala oa ho cheka o ka etsoa ho latela moralo oa moreki. | |||||||||
Li-collars tsa ho cheka ke motsoako o boima oa mosebetsi o entsoeng ka mokoloko o tiileng oa AISI 4145H o fetotsoeng alloy steel.Likhola tsa rona tse tloaelehileng tsa ho cheka li na le "as rolled" holim'a boemo ba ho qetela.?Libaka tsohle tse tloaelehileng li fumana phekolo ea mocheso e fanang ka thepa e hlokahalang ea mochine.
Joale mekoallo e koalehile 'me e hoholehile.Li-collar tsa rona kaofela li entsoe ka hare
ho latela API spec 7, Q1 le tloaelo e khothaletsoang ea 7G, joalo ka ha e sebetsa.
Boholo bo Tloaelehileng, Bores, le Khokahano
| Koala Molala Conn. Boholo & Mofuta | Min. OD | Bore | Bolelele | Matla a Kobehang Karolelano*** | Koala Molala Wt. |
| (ka.) | (ka.) | (ft.) | (lb.) | ||
| NC 26 (2-3/8 IF) | 3-1/2 | 1-1/2 | 30 | 2:42:1 | 801 |
| NC 31 (2-7/8 IF) | 4-1/8 | 2 | 30 | 2:43:1 | 1041 |
| NC 38 (3-1/2 IF) | 4-3/4 | 2-1/4 | 31 | 1.85:1 | 1451 |
| NC 38 (3-1/2 IF) | 5 | 2-1/4 | 31 | 2:38:1 | 1652 |
| NC 44 | 6 | 2-1/4 | 31 | 2:49:1 | 2561 |
| NC 44 | 6 | 2-13/16 | 31 | 2:84:1 | 2353 |
| NC 44 | 6-1/4 | 2-1/4 | 31 | 2:91:1 | 2806 |
| NC 46 (4 IF) | 6-1/4 | 2-13/16 | 31 | 2:63:1 | 2598 |
| NC 46 (4 IF) | 6-1/2 | 2-1/4 | 31 | 2:76:1 | 3085 |
| NC 46 (4 IF) | 6-1/2 | 2-13/16 | 31 | 3.05:1 | 2877 |
| NC 46 (4 IF) | 6-3/4 | 2-1/4 | 31 | 3.18:1 | 3364 |
| NC 50 (4-1/2 IF) | 7 | 2-1/4 | 31 | 2:54:1 | 3643 |
| NC 50 (4-1/2 IF) | 7 | 2-13/16 | 31 | 2:73:1 | 3434 |
| NC 50 (4-1/2 IF) | 7-1/4 | 2-13/16 | 31 | 3.12:1 | 3714 |
| NC 56 | 8 | 2-13/16 | 31 | 3.02:1 | 4675 |
| 6-5/8 REG. | 8 | 2-13/16 | 31 | 2.60:1 | 4675 |
| 6-5/8 REG. | 8-1/4 | 2-13/16 | 31 | 2:93:1 | 5016 |
| 7-5/8 REG. | 9-1/2 | 3 | 31 | 2.81:1 | 6727 |
| 7-5/8 REG.** | 9-3/4 | 3 | 31 | 3.09:1 | 7130 |
| 8-5/8 REG.** | 11 | 3 | 30 | 2:78:1 | 8970 |
| ** Sefahleho sa torque e tlase *** Karolelano ea lebokose ho penya modulus - Sheba API RP7G bakeng sa lintlha Tlhokomeliso: Lisaese tse ling le likhokahano lia fumaneha hammoho le likarolo tse ling tsa boikhethelo tse thathamisitsoeng | |||||
| Thepa ea Mechini | ||||||
| TTT | Matla a ho hlahisa 0.2Mpa | Matla a tenneng b Mpa | Elongation 4% | Ho thatafala (Brinell) | IMPACT VALUE(CHAPPY-V) | |
| mm | ka inch | |||||
| 79.4-171.4 | 3 1/8-6 3/4 | ≥ 758 | ≥965 | ≥ 13 | 285-341 | ≥54 |
| 177.8-279.4 | 7-11 | ≥ 689 | ||||
