0000005964 00000 n DT connections are double shoulders connections with API thread pro les. All Full Hole connections were made obsolete by API in 1968, to be superseded by NCs. PACs are also the only connections that still use the fatigue prone V-065 thread form that was discarded by everyone else in 1968. <> 0000057067 00000 n Videos. Do you have a problem? The result is that drilling tools arent being inspected as often as they used to be allowing minor mechanical damage to get worse. Through design optimization and balancing of stresses, the connections enhanced fatigue resistance eliminates the need for cold-rolling drill pipe connections. Some examples are: Most premium connections have a double shoulder. All rights reserved B.H.A. Thanks, Background Gas In Drilling Oil & Gas Wells, D Exponent Calculation & Correction Equation, Drill Pipe API Specifications, Thread Types &Tables, Cementing Calculations- 7 Steps & Spreadsheets. The actual weight of the 5 D/P in the above example is 20.89 lb/ft. However, the 5 1/2 FH was officially resurrected about 10 years later. They come in different shapes and sizes from the many competing factories. On the pin the first three or four starting threads and the final two threads near the seal and on the box the first two threads near the seal and the last three or four vanishing threads at the back of the box are not engaged (high torque connections designed with less thread taper have more engaged threads). In these scenarios the API box typically has a bore back (BB). 8aeZH PjAN% s|Tr"D|ax:h w NXC?NGXP@{f*$L@wEyWg{\k~c]XIGU1j+\gBD[ lPthp8. DIR-2640-US. All TSC API grades meet or exceed the standards. hb```b``f`f``dcd@ AV Hd1sR$I>:5Ox,TdxL~8cS Ghsu2_kGP#o %PDF-1.6 % So here comes a post with the need-to-know basic stuff about drilling connection types. Loading Originals. DIR-3040-US. They offer good clearance, but often at the price of alarmingly low tensile and torsional capacity. Example3) I inspected the drilling tools on this rig drilling horizontal wells in the Edson and Hinton area between November of 2018 to February of 2021. Connect the computer or device to the wireless network. Open the Device menu and select Quit. Dlink DSL-2640B routers include a very basic firewall that helps protect your home network form unwanted access from the internet. Specifications The Grant Prideco Double Shoulder (GPDS) and EIS connections are high-performance rotary-shouldered tool joint connections available for drill pipe ranging in size from 2 to 6 in. Non-API Drill Pipe Connection Thread Types H-90 Connections INSPECTION SERVICES LTD. On a high torque connection once torque is being applied the pin connection will stretch slightly until the secondary torque shoulders/mechanical stops come into contact with each other and then recommended makeup torque is achieved. wW}Mdtx}~rOjJ|9us|0p However, this is not as bad as it seems, since in drill collars PACs rarely survive tensile and torsional loads long enough to fail by fatigue anyway. What might come as a surprise to many is that no API RSC is pressure rated with regards to gases and liquids. See the list below for thread types that can be used together. 0000057993 00000 n 5,295 were here. In this post I will deal with the drill string connections only. RSC's can endure high pressures under favourable conditions. With print speeds as fast as 8.9 seconds and a unique roll-fed printing method, the DS40 can print up to 400 4"x6" prints before a media reload is . if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[250,250],'drillingmanual_com-large-leaderboard-2','ezslot_10',622,'0','0'])};__ez_fad_position('div-gpt-ad-drillingmanual_com-large-leaderboard-2-0');So, the actual weight depends on the type of connection thread and pipe grade. Some premium connections are compatible with API connections, even though one of them has a double shoulder and the other not. Access multiple NOV applications and services with one login. Learn how to connect your Epson WorkForce DS-40 and DS-560 scanners to a wireless network. Wi-Fi Networking. More information about cookies and your choice can be found in our Privacy Policy. Our expansive network of licensed repair, Supporting our customers is our highest priority, and we look forward to partnering with you today, Our licensed repair facilities provide 24/7 service and technical support around the globe for. endstream endobj 129 0 obj <>stream I completed a total of 6 inspections which resulted in the inspection of 72 6 1/2drill collars and miscellaneous subs and 268 4 (DS40) hevi-wate drillpipe. 0 4 threads per inch (.250 lead) . sz}KTnG_hFxm; =TbuxW.eqzxiy})8uXvBVv|iZJ%RsGv*CEPOBmCOxJ60zJM%J c9jh]t7gCt{VSc As the pin and box connections are being screwed together in theory there should be no weight or tension on the connection. $qi>}Px=fDYI px// hw7b|Z,/Eu{w?$/^%/N&W7G,)KU9:/#jWW4-~<>j1=~M}|cN1/LLZ!paL/.3^d! Also the heavier the drilling tool the more severe the damage, drill collars and hevi-wate drill pipe seeing the most thread damage. Command Tubulars CET and CDS connections offers technically advanced solutions for even the most demanding drilling conditions. AC2600 High Power Wi-Fi Router. <>>> We have the people, capabilities, and vision to serve the needs of a challenging and evolving industry. Each joint of drill pipe consists of the tube body and the Tool Joint (connection). Yes, some connections go together with other types under given circumstances. MTU 4R0113 DS40 Diesel Generator Set 40 kWe/60 Hz/Standby/208 - 600V Reference MTU 4R0113 DS40 (40 kWe) for Prime Rating Technical Data . Welcome to VAM. Interchangeability means that the connections will mate together, make up, and function; however, the performance properties will be limited to those of an API connection. ?m dv%S. The drill string data sheets tell us what the pipe can endure internally in the drill string before it bursts or collapses. Drill Pipe; Heavyweight Drill Pipe . All Full Hole connections were made obsolete by API in 1968, to be superseded by NCs. <]/Prev 117280>> startxref Theme by Seos Themes. This provides a bigger shoulder area, thus allowing a higher makeup torque. 0000058158 00000 n We have the people, capabilities, and vision to serve the needs of a challenging and evolving industry. 2018 Command Tubular. Manufacturers compete for the best connection, and that will probably continue for some time. The same drill pipe with a CDS40 connection will have a premium minimum OD of 4 3/4. It can be tough getting the terminology right, so let's nail it down right now. In order for this to work the thread profiles need to match each other. 0000058062 00000 n Grade E D/P has a yield strength of 75,000 psi. GPDS and EIS are proven connections that provide increased torsional capacity, promote more streamlined configurations, and tolerate more tool joint wear than standard API rotary-shouldered connections. I HAD PING FROM THE PC TO THE SILEX NETWORK ADAPTOR WITHOUT . H-90 thread forms are still common on BHA components. That rule shouldnt be taken literally and the minimum amount of material should be removed in a single refacing. 0000113159 00000 n On the other hand there were inspection companies in the past that used a grinder with a soft disc on it to flatten galls and polish seals on a regular base. Do you need to talk with drilling experts and have a free consultion? %%EOF The working strength is reduced because of loss in cross-sectional area. Also you can see there was no original damage to the load flank it was all on the stabbing flank showing the previous damage was caused by too much weight on the connection at make up or break out. High-strength connections designed for demanding drilling applications. Pipe Weight:20lb/ft (29.76kg/m) 0 Upset: IEU Connection: Makeup Torque Then Tension Chart Connection Wear Chart 26,600 DRILL PIPE PERFORMANCE DATA SHEET DS40 CONNECTION OD (mm) MAKEUP TORQUE (N-m) 128.6 Calculations are based on uniform wall thickness and outside diameter - no safety factor has been applied. by revisions ds box field inspection dimensions connection a box depth b c'bore c min wall d bevel dia. 4 0 obj 0000112667 00000 n Let's take a look at how this works. Contact your Grant Prideco representative for hydraulic-optimized configurations and for further OD and ID combinations. endstream endobj 5 0 obj <> endobj 6 0 obj <>/ProcSet[/PDF/Text/ImageC]/XObject<>>>/Rotate 0/Type/Page>> endobj 7 0 obj <>stream DS-40 User's Guide. 4.5 Drill Pipe Range III- Delta 425 Connection. %PDF-1.7 x}[se%r,TN94)QyQ6$h}~F5>WW/=}b`FV>Oo>Qz8l ydjPD=dpGop&1_;c!o^CeCN?>}A&5+ A=}g8} .?B>y~;A VQidaeyt#.#vWW/3MqqCw 3str{Oz\igxKwx6H'J'Gqp1Qp'4>ajZFdcFMq0w.e^WZe~,LG[?4`. >s. 0000009889 00000 n 0000002034 00000 n hbspt.cta._relativeUrls=true;hbspt.cta.load(464779, '6ec4f243-a5b8-4786-85c2-c055297acb25', {"useNewLoader":"true","region":"na1"}); Topics: The minimum OD varies with what grade and weight the drill pipe is. Below are photos of a DS40 pin connection that I completed minor repairs on and then was subsequently used to drill four horizontal wells. uGPDS connections are interchangeable with GPDS and API connections of similar size. Thanks to the financial capital provided by our investors, we're able to continue developing innovative products and solutions to the oil and gas industry that lead a safer, more environmentally friendly future. 0000009508 00000 n The Grant Prideco Double Shoulder (GPDS) and EIS connections are high-performance rotary-shouldered tool joint connections available for drill pipe ranging in size from 2 to 6 in. The wide range of connections naturally brings up the question about compatibility. In addition, monitoring of the first 108,000 connection inspections showed Delta requires 3.1 times fewer recuts than XTmeaning cheaper repair bills, fewer pipe movements for repair, and simply less pipe needed as contingency. ! There is no apparent reason (except tradition) for their continued use, since superior NCs exist for most all applications. Command Tubular supports all of its connections around the world by providing quality support, local licensees for repair and accessory manufacturing. 0000009762 00000 n These are single shoulder connections: They only have one torque shoulder on both pin and box. stream 4.5 Drill Pipe Range III - DS40 Connection. 0000086746 00000 n Join our global family and become part of the company thats leading innovation within the upstream oil and gas industry. RSC's come in two sub-categories: Study the schematic for drill pipe tool joints below to gain a better understanding of what we are talking about: > Read also: How to choose the right drill pipe. Our DS is interchangeable with the following API thread connections: DS38 NC38DS40 NC40DS46 NC46DS50 NC50DS55 5 1/2 FH High TorqueConnections DT Connections DT connections are double shoulders connections with API thread pro les. Removed 11 cracked drilling tools from service. SST boxes are identical to NC boxes of the same size. . I won't be talking about connections for casing or tubing. Similarly, the API pin will make up to the double shouldered box. Our family of companies is organized to provide expert solutions, equipment, and operational support to optimize your drilling and production operations. With up to 50% faster makeup than the XT connection, Delta saves up to 4 seconds on each connection makeup and breakout. Environmental Topics and Definitions Applicable to NOV, We Power the Industry that Powers the World, Extreme torque (with as much as 20% more than XT) for drilling more extended-reach wells, Enhanced hydraulics (~30-40% reduction in pressure losses compared to API) to promote faster drilling with more downhole tool power and improved hole cleaning, Streamlined design to allow using larger drill pipe size, reducing vibrations for better borehole quality. The number serves no real purpose other than identification because drill pipe does not have API regular connection. Since this firewall blocks incoming connections you may need open a port through it for certain games and applications. 35 likes. This additional strength provides the required torque for drilling to extended depths or in more demanding environments. One thing I do though is when it comes to galled seals with raised burrs that do not meet the requirements to be refaced, manufacturers recommend not filing the gall flat but to reface the seal instead (raising repair costs). if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[250,250],'drillingmanual_com-leader-2','ezslot_16',642,'0','0'])};__ez_fad_position('div-gpt-ad-drillingmanual_com-leader-2-0');They are about equivalent in performance to Regulars, except that the shallow thread angle can cause high box hoop stress at high makeup torques. Delta belongs to the same torque segment as our XT connection and offers the same hydraulic performance. Throughout every region in the world and every area of drilling and production, our family of companies provides the expertise, equipment, and operational support necessary for successnow and in the future. They were originally a proprietary product of Hughes Tool Company and are easily recognized by their shallow 90 degree thread angle. If they do, take care to use the makeup torque values for the weakest connection. 0000038377 00000 n 0000018152 00000 n FAQs. Keep in mind for example a 4 1/2XH pin like the one bellow has over 4 meters worth of threads if they were stretched out. 0000113102 00000 n 0000010031 00000 n Thread stretch is a normal part of making up any rotary shoulder connection as long as the point of elasticity is not passed. Fitting Type: Pipe Medium: Iron Pipe, Plastic Pipe Fitments: NPT, BSPT, BSPP, NPS National Pipe Taper Railing - NPTR up Printer-friendly version That is a legitimate question. Quality production Process Monitoring, traceability, and inspection is our mindset when it comes to assuring long-lasting drill pipe is delivered to our customers. 0000023284 00000 n <>/XObject<>/Pattern<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 595.32 841.92] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> Drill Pipe. '7b/m~'r)':`oQg8oG3y5 Uniform wear and a minimum wall thickness of 80% of original wall thickness. There are no suggestions because the search field is empty. Torque advantage over API and runs easier than the competition, providing the optimum solution to reach total depth as fast as possible. Although similar to other API connections, these connections incorporate an internal secondary torque shoulder. The longest & major section of the Drill String Componentsis the Drill Pipe. NC means Numbered Connection and the number signifies the Gauge Point Pitch Diameter (GPPD) of the connection. Here through the end of the summer and then heading back to my home university Each description item is explained in more detail below.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[250,250],'drillingmanual_com-box-4','ezslot_8',634,'0','0'])};__ez_fad_position('div-gpt-ad-drillingmanual_com-box-4-0'); Which is simply the plain end (tube) outside diameter. 0000000016 00000 n Also, the 6-5/8 FH was officially reinstated in 1993, no doubt because of its increasing popularity on 6-5/8 inch D/P. Everything's fine today, that is our illusion". Choose the Dynamic IP Address option from the WAN Settings pull-down menu. Solving Problems. Higher torque. GPDS and EIS are not interchangeable with each other. Our goal is, quite simply, to connect the lesbian community worldwide. %PDF-1.5 Premium connections Premium connections are like cell phone chargers. bKun"`e7{8+;Z We hope to hear from you soon, and feel free to . 0000112758 00000 n Only comedy club in town with the nation's top comedians PROVEN to make you laugh! Allows drill pipe with a minimum wall thickness of 55% with all wear on one side. Rejected a total of 1 drill collar, and 7 hevi-wate drillpipe for excessive thread or seal damage. Jim Felder Author Level 1 21 points Printing to a DNP DS40 Printer I have a 27" iMac running OS X 10.10.5 and it prints fine. Ironically, SSTs are rarely found in BHA components where their larger thread root radius would be most bene cial. PACs are very poor selections for drill collars. Since downhole stress can be additive to makeup stress, PAC connections are that much closer to failure even as they pass through the rotary. The rule for refacing rotary shoulder connections is to remove not more than 1/32 inch(.031) from a pin or box seal at any one refacing and not more than 1/16 inch(.062) cumulatively. In general, D/Ps joints are available in three length ranges: API Drill Pipe Specifications (specs) is generally described 6 items. Athlete's Connection/Teamlax, Lansing, Michigan. It is an NC pin with a rounded-out thread ank that gives a root radius of 0.057 inches (compared to the NCs 0.038 inches). It is simply an NC connection with an additional torque shoulder at the pin tip. 4 0 obj - Be LIBERAL with the thread compound in the box, the base of the box, and on the pin using a copper-based or a compatible thread compound. 0000113251 00000 n l Whenever I start scanning, the software EPSON scanner works fine but it will . It is also my observation that if you can keep a connection in the field working the thread flanks and torque shoulders will harden up from the cold working that occurs every time the connection is made up making them more resistant to mechanical damage. High-strength connections designed for demanding drilling applications. Also, the 6-5/8 FH was officially reinstated in 1993, no doubt because of its increasing popularity on 6-5/8 inch D/P. Custom screen Only in rare circumstances can you screw together two different types of premium connections . HW |?_?g[w9_~ppEY$EfLJWJ"?g)=k#C?j{q9\%u>>zpx_~}}o_?q^iH(?bt^%=S"f|\\[~l+s9XY 6i;i'@?g#wcbH56M2MJe fe;.s ?T}DAL0[HG;2poGTR'GWw1!'7 In summary, the Delta connection offers: Extreme torque (with as much as 20% more than XT) for drilling more extended-reach wells Enhanced hydraulics (~30-40% reduction in pressure losses compared to API) to promote faster drilling with more downhole tool power and improved hole cleaning The M-DS40-XYZ Compact Metric Dovetail Linear Stage is preferred for small 14 mm XYZ travel applications where set, lock, and forget is required. 0 Hopefully it will be of use to you - whether you're a rookie or a veteran. I have the capability to reface all standard rotary shoulder connections listed below using a Drilco refacing tool as seen in the Drilco (Smith Tool) drillers hand book. Largest supplier of lacrosse equipment in Mid-Michigan. 2. By the way, our official name and address is Elsie Publishing Institute (EPI), PO Box 811, East Lansing, MI 48826, ph 517-371-5257, fax 517-371-5200, www.LConline.org. This is a patented design for tool joint pins. 0000057605 00000 n That means that they have an extra torque shoulder in the nose of the pin and in the bottom of the box. As the most balanced drill pipe connection we have ever put to market, Delta offers a cost of maintenance comparable to that of an API connection while providing improved performance. 0000097810 00000 n Drilling Equipment. Pin end Box end Threads have two flanks (the sides of the thread). 0000112799 00000 n Standard makeup torques in PAC drill collars cause a pin neck tensile stress of 87,500 psi, compares to 62,500 psi in a similar sized NC connection. Welcome to the new VAM Services website! Configurations in the below table are torque optimized. Inspection methods include electromagnetic inspection of pipe body to locate cracks and pits, sonic inspection to measure wall thickness, visual inspection to detect mashes and caliper measurements. The most common damage is to see a raised burr form on the thread crest and minor galling on the stabbing flank side of the threads. This website would like to use cookies to store information on your computer which will help to customize your interactions with us and provide you with a better browser experience. The short answer is competition. endobj 3 0 obj It is also a good idea to monitor the damage to the top drive saver sub working pin it will tell you if there is a problem by its wear pattern. The CDS connections life is extended by being able to wear to a smaller OD while maintaining a torsional capacity greater than 80% of the drill pipe tube. Tool Joint / Connection Specifications. The DS series incorporates precision preloaded dovetail slides with an 80 TPI drive screw for precision positioning, hex head . 5.5 Drill Pipe Range II - HT55 Connection. With the advent of horizontal drilling and the use of top drives there have been two major changes in drilling tool damages. 0000038446 00000 n Also not all threads are engaged when the connection is made up. rMD`i1yL+GW;pV{}M>T]^TO%Kec Z;fttQSJrVj v4[T]_>O(AzzZ+VDjSM2"u~6~a~ C_L0V]?6u]QUSeyHVU>}S?rmVX'|, \yMDmjh9S+};zYfDu2o2c9Enu|/b{nA/*ed3cFIDe4. Refacing should be a last resort when repairing minor seal damage. Therefore, in this article we shall discuss API drill pipe specifications (specs), description, classification & drill pipe connection thread types. As Voltaire so eloquently put it: "One day everything will be well, that is our hope. 0000009377 00000 n 0000088212 00000 n Scanner Basics. 802.1X. With regularly scheduled field inspections of your bottom hole assembly that includes minor repairs to threads and seals there is no reason why a string of drilling tools shouldnt last until the drilling program is complete with minimal rejects. This process of opening a port is frequently called a port forward, since you are forwarding a port from the internet to your home network. 0000112877 00000 n 780 0 obj <> endobj API Drill Pipe GradeMinimum Yield Strength (psi)Minimum Tensile Strength (psi)E-7575,000100,000X-9595,000105,000G-105105,000115,000S-135135,000145,000. There is no gap or change in the ID from the box to the pin, creating a smoother fluid flow with less turbulence and eliminating the opportunity for trapped cement and cuttings. size nominal weight (lb/ft) grade connection range wall thickness (nominal) remaining body wall od (tool joint) id (tool joint) drift (tool joint) 5-1/2" For drill pipe connections, Delta is the difference. endobj x[]o6}7GX( Exterior wear includes OD wear, dents and mashes, slip area crushing, cuts, pitting and corrosion. Allows D/P with a minimum wall thickness of 65% with all wear on one side so long as the cross-sectional area is the same as premium class, that is to say, based on notmore than 20% uniform wall reduction. 5 Drill Pipe Range II- VX46 Connection. These included the NC-50 (old 4.1/2 IF) the NC-46 (old 4.1/2 XH) and NC-38 (old 3.1/2 IF). Our award-winning DS40 is a compact, affordable and powerful digital photo printer that uses a high-resolution dye-sublimation processor to produce photos with impressive full-color details. 24 Connection mode Description Wi-Fi Connects to a Wi-Fi router (requires additional network setup steps, see link at end of topic) if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[250,250],'drillingmanual_com-large-mobile-banner-2','ezslot_15',641,'0','0'])};__ez_fad_position('div-gpt-ad-drillingmanual_com-large-mobile-banner-2-0');The number preceding regular in the name (in, for example, 6-5/8 Regular) refers to the drill pipe size on which the connection was originally to be (but is no longer) used. 127 0 obj <>stream endobj Command Tubular is a manufacturer of Standard API Connections and provides American Petroleum Institute (API) certified connections in a variety of pipe lengths, diameters and steel grades licensed for: In addition to industry API tool joint connections, Command Tubular offers its advanced CET and CDS connections when higher torque is needed. I HAD FOLLOW A COMPANY RECOMMENDATION FROM THE WEBSITE TO USE SILEX NETWORK ADAPTOR, I STILL UNABLE TO PRINT ANY IMAGE FROM THE PC TO THE DS40 PRINTER. The stabbing flank on the other hand does not come into contact with its opposing stabbing flank when made up, there is actually a space to channel away excess thread compound and debris while the connection is being made up (Rotary shoulder connections do not seal in the threads). Products TSC's Drill Pipe product range includes sizes from 2-7/8" diameter pipe to 6-5/8" diameter pipe. . 0000097048 00000 n %%EOF Frode Bjrheim is a specialist in drill pipe standards and lifting equipments with more than 30 years' experience in the oil & gas industry, both offshore and onshore. 0000097385 00000 n giEnk3)A[C6{:kRmzY,+D8?O.t]LG0BZ/$He$h6K?aBUJ:yW|71? % 0000028548 00000 n This website would like to use cookies to store information on your computer which will help to customize your interactions with us and provide you with a better browser experience. With the Technology on todays high tech drilling rigs specifically designed to make up and break out drilling tool rotary shoulder connections you shouldnt see the number of rejected tools going to machine shops for thread and seal repairs that you do. EPI is a tax-deductible U.S. 501 (c) (3) nonprofit charity. Security level: Select the wireless connection's security protocol. 0000013758 00000 n Powered by ASTOUNDZ, 7-1 and 7-2 (ISO 10424-1:2004 and ISO 10424-2:2007), Best in class performance and optimized operational characteristics required of high torque connections to drill the well designs of today, Available on all sizes of drill pipe, heavy-weight drill pipe and collars for use on work strings, slimhole drillstrings and frac strings, 5 turns to make-up is the fastest of any high torque connection, 170% 200% of the torsional strength of API connections, Provides increased torque with the addition of an optimized secondary torque shoulder, Reduces the amount of repairs required to less than 1% per well drilled, Cuts rig NPT during tripping operations by 50% over competitive high torque connections, A smooth ID through the connection, which can be made with smaller ODs and larger IDs than standard connections while maintaining higher torque capacities. The CDS connection can be made up with API numbered connections and some other available double shoulder connections. This gives torsional capacities 40-60 percent higher than the original NC. Built for durability and performance by the industry's leading drill pipe manufacturer, Supporting our customers is our highest priority. j[wS}`O*moP]j~MJlHF}B~ a@`3EbpQ2=E'f= #>l3QC"~5: #),C`a`a`aEb47}$5>r=II}D/DC$!O }hA4Ok_?p 0 67 Delta delivers improved overall performance compared to our XT connection but with the ease of use and lower cost of maintenance of an API connection. I have been repairing minor seal damage like this for over 30 years without issues. As an example a 4 G105 15.7 lbs/ft drill pipe with 5 x 2 7/16 NC40 connections has a premium class minimum OD of 5. AC3000 High Power Wi-Fi Tri Band Router. In Michigan for a project and working across multiple universities. You can see the threads are all pushed back towards the seal signifying there has been to much weight put on the connection when being spun in and out. 0000096759 00000 n -)WQg@bf? @F/P)A$9L[1 4 55 Innovative thread design Similar collar ID and OD to standard API NC connections Developed to eliminate twist offs and reduce NPT and maintenance costs associated with downhole failures, the XPC* extreme-profile single shoulder connection significantly increases fatigue life over standard API NC connections. Sometimes these are experienced drillers who have been in the industry for years. You don't want an unexpected shoulder separation and an uncontrollable leak when drilling a deviated well.. Faster drilling. At the same time, API declared that the IF and Full Hole (FH) lines were obsolete. endobj 0000001728 00000 n 0000009635 00000 n Secondly you see much more minor thread damage now because of the shear weight of the top drive. Both use the same thread form and are interchangeable with their API counterpart connection, as shown in the chart in the specifications tab. 2 0 obj endobj the NC-38 a GPPD of 3.80800 inches and so on. When evaluating the condition of a seal I use API and manufacturers standards as to the acceptability of the seal and when to reface the seal if required. 0000087677 00000 n To accept cookies from this site, please click the I Accept button below. A standard rotary shoulder connection has two main components A seal/torque shoulder and threads. This secondary torque shoulder is not a seal. For example. ocean view, falmouth hello student,