8 1/4 inch oill well non magnetic drill collar weights
We supply slick drill collars,spiral drill collarsandnon-magnetic drill collars; their sizes are from 3-1/8 to 11 inches. Besides the drill collars in the table below, we can supply other drill collars at customers' request.
Materials:
Drill collars are manufactured from AISI 4145H modified steel, and are supplied in the "as rolled" surface finish condition. Alternative surface finishes are available.
Trepanning and Heat Treatment:
Drill collars are trepanned and drifted to API Spec 7-1. Full-length heat-treatment processes ensure that mechanical properties meet or exceed API Spec 7-1 requirements. A hardness range of 285-341, Brinell hardness and Charpy "V" notch minimum impact strength of 40 ft-lb at 70 F are guaranteed one inch below the surface.
Traceability:
Drill collar material and process traceability are maintained from receipt of the mill's certified raw material to completion of manufacturing. Serial numbers are die stamped on bar bodies.
Rigid Inspection Procedures:
We inspect all our drill collars to ensure compliance with API SPEC 7-1 standards. These inspections include visual dimensional checks as well as ultrasonic inspections over the entire body of the drill collar.
Cold Rolling:
Drill collar thread roots, as well as elevator recess upper radius, are cold-rolled. Cold rolling creates a compressive recess upper radius stress condition that increases fatigue life by minimizing crack initiation.
Phosphate-coated or Copper Plating:
All connections are phosphate-coated or copper plated to improve resistance to corrosion.
Slip Groove, Elevator Groove and Size:
Lake offers optional slip and elevator recesses to improve handling efficiency and safety. Unless otherwise specified, slip and elevator recesses are machined in compliance with API spec 7-1 guidelines.
Thread Protectors:
Our company offers steel, cast steel and plastic steel thread protectors for its drill stem products.
在线联系供应商
Other supplier products
 |
Lower drilling cost using roller cone drill bit/ tricone bit with API 7-1 standard | 1.CuttingstructurethistypeTCItriconebits: Thedurabilityofpremiumtungstencarbideinsertisimprovedwithnewformulasandnewtechniquesforinsertbit. ... |
 |
API upper and lower Kelly Valves or Drill Pipe Safety Valve | Kelly Valve also named Kelly Cock/Drill Pipe Safety Valve allowing free passage of drilling fluid without pressure loss. The valve can be used as a... |
 |
API CDQ Sucker Rod Elevator for sale | Product Description 1. Product performance standards: API 8A and SY / T5235. 2. Environmental conditions used Sucker Rod Elevatora) Allows ... |
 |
API Standard Drill Pipe Elevators Type DDZ | LAKE 's DDZseries elevators are center latch elevator with 18 degree taper shoulder, applied in handling the drilling pipe and drilling tools, etc.... |
 |
Factory API Blowout Preventer and BOP spare parts for sale | BOP parts that we supply all come from original manufacturers, they are 100% interchangeable. BOP PART NAME:top sealing, front sealing, pipe... |
Same products
 |
贵州中钻T45 T51 螺纹钻头 | 卖方: 844239 | SINODRILLS Threaded Button Bits With the top quality of alloy steels imported from USA and the b... |
 |
SF1 Smart Scale | 卖方: Shenzhen Yan Xing Science & Technology Co., Ltd. | SF1 Smart Scale SF1 is our star smart body fat analysis scale. This body fit smart scale has a s... |
 |
Mining and Minerals | 卖方: Bolian filtration solutions | Filter Fabric Used in Mining and Minerals Markets Applications One of the key points in energy... |
 |
About Grinding Steel Balls grinding medias | 卖方: 山东金池重工股份有限公司 | We are a professional factory producinggrinding mediasabout 25years since1995with ISO9001,OHSAS18... |
 |
About Grinding Steel Balls | 卖方: 山东金池重工股份有限公司 | DearManager: This isLeofromShandong Jinchiheavy industry joint-stockCo., LTD in China. We are a... |
