Sucker rodsyog cov khoom tseem ceeb nyob rau hauv cov roj twj tso kua mis tsim los ua haujlwm lub downhole piston thiab rho cov roj crude los ntawm reservoirs. Lawv yog tsim los ntawm ntau yam ntaub ntawv xws li steel, fiberglass, aluminium alloys, thiab carbon composites. Peb cov blog qhia txog qhov muaj pes tsawg leeg, cov khoom, qhov zoo, thiab cov kev txwv los qhia txog kev xaiv cov khoom zoo.
1. Puas yog Steel Sucker Qws Zoo?
Steel rods tau ib txwm ua cov khoom tseem ceeb xaiv vim lawv qhov tshwj xeeb tensile zog, durability, thiab nqi-zoo. Lawv feem ntau yog tsim los ntawm qib siab nruab nrab carbon steel xws li AISI 1045 nrog ib ncig ntawm 0.45% cov ntsiab lus carbon. Cov hlau yuav raug kho los ntawm quenching thiab tempering kom ua tiav tensile zog tshaj 100 ksi.
Lub zog zoo heev ua rau cov pas nrig steel tuaj yeem tiv taus hnyav hnyav thiab zoo li qub thaum lub sij hawm reciprocating motion. Cov ntsiab lus carbon nruab nrab muab qhov tsim nyog ductility, qaug zog ua haujlwm, thiab kev ua haujlwm zoo dua rau cov hlau alloy siab dua. Cov alloying ntxiv xws li chromium, vanadium, thiab molybdenum feem ntau koom ua ke los txhim kho hardness, qaug zog lub neej, thiab corrosion kuj.
(1) Kev txhim kho thiab tu
Kev txhim kho kom zoo yog qhov tseem ceeb rau kev tiv thaiv ntxov ntxov steel pas nrig ua tsis tiav. API cov lus qhia pom zoo kom txwv qhov kev hloov pauv thawj zaug rau {{0}}.2 In./ft thiab khaws curvatures hauv qab 0.1 In./ft. Gradual straightening yog nyiam dua li khoov khoov nrawm. Yuav tsum tau siv cov xov zoo lubrication kom tsis txhob khaus thaum pleev (API 11B, 2015).
Lub lubrication tsis tu ncua, kev tshuaj xyuas qhov muag, thiab kev kuaj NDT ib ntus yog qhov tseem ceeb los tiv thaiv cov pas nrig hnav, corrosion, thiab kev puas tsuaj rau kev qaug zog (Jennings li al., 1993). Qws kawg tuaj yeem raug txiav kom tshem tawm cov seem puas. Cov rods hnav yuav tsum tau hloov tam sim ntawd kom tsis txhob muaj cov khoom lag luam poob qis.
2. Fiberglass Sucker Rods: Lub zog, qhov hnyav, thiab kev tiv thaiv corrosion
Fiberglass rods nthuav tawm lub zog tensile siab tshaj 160 ksi ua ke nrog qhov hnyav qis, ua kom muaj peev xwm nqa tau thiab ua haujlwm tau zoo hauv qhov tob tob (Jennings li al., 1993). Lawv yog tsim los ntawm pultrusion ntawm thermoset polyester los yog vinylester resin reinforced los ntawm qhwv strands ntawm high-strength iav fibers.
Cov fiber ntau ntim feem ntau txog li 80% imparts tshwj xeeb lub zog thiab nruj. Fiberglass ua kom pom kev qaug zog zoo dua nrog kev nkag siab tsawg dua rau kev puas tsuaj loj (Jennings li al., 1993). Cov pas nrig kuj yog ib txwm muaj corrosion-resistant yam tsis xav tau cov txheej txheem tiv thaiv.
(1) Ntau npaum li cas 1.25 fiberglassnqus rodhnyav?
Nws qhov hnyav tuaj yeem sib txawv nyob ntawm qhov chaw tsim khoom thiab qhov tseeb specifications. Txawm li cas los xij, fiberglass rods feem ntau sib dua li cov pas nrig steel. Txhawm rau muab qhov kwv yees ntxhib, ib qho 1-inch fiberglass pas nrig feem ntau hnyav li ntawm 1.5 mus rau 2 phaus ib ko taw.
Aluminium Alloy Sucker Rods - Lub teeb tsis tau ua raws li lwm txoj hauv kev
Aluminium alloy proffers nyob ib ncig ntawm 40% qhov hnyav txuag piv rau cov hlau, txo cov kev ntxhov siab ntawm cov tubing. High-strength aluminium alloys zoo li 6061 thiab 7075 uas muaj magnesium thiab zinc feem ntau yog siv. Aluminium exhibits zoo heev corrosion kuj.
Txawm li cas los xij, aluminium rods yog ntau dua li cov hlau, nthuav tawm ntau dua elastic deflections thiab propensity rau buckling (Postler, 1997). Lub zog qaug zog kuj qis dua cov hlau. Yog li txhuas rods feem ntau txwv rau tsawg deviated, tsawg-load qhov dej. Kev sib txuas zoo nrog steel pony rods yog qhov tseem ceeb los txo cov kev sib txuas ntawm kev sib txuas los ntawm kev ntxhov siab flexural.
Puas yog koj tab tom nrhiav tus khub txhim khu kev qha los muab cov khoom zooSucker Rods? Vigor tuaj yeem muab kev pabcuam rau koj. Peb cov ntaub ntawv yog AISI A-4130-M, A-4140-M, A-4142-M, A-4330-M, thiab A-4138-M, uas ua raws API Specification 11B. Peb muab cov ntaub ntawv khoom vaj khoom tsev rau cov khoom siv uas nquag siv. Rau kev thov tshwj xeeb, thov hu rau peb kom paub tseeb. thov hu rau peb ntawminfo@vigorpetroleum.com.
