This painted-on line is applied by reference to the gage (hand tight plane).In business since 1982, Inter-Mountain has established itself as one of the leading suppliers of OCTG in the Rocky.It is to be understood that the joint can be used with a coupling, collar or conventional box member as illustrated in the FIGURE.Recommended Make-Up Torque, API Tolerances, TFA Chart Drill Bits Roller Cone BIT MAKE-UP 1) Use the correct bit breaker. 2) Inspect the bit for potential damage.For all size, weight and grade combinations tested, phosphatized couplings with API modified thread lubricant successfully sealed liquid internal pressure 100% of the time.If you think casing make-up is all about reading graphs on a computer display, this is undoubtedly a blog post you should read carefully.If the make up torque was up to 12k ft-lb after the first couple of thread,.At the low end of the tolerance, the tin plating thickness will completely fill the thread root to crest clearance and most of the thread flank clearance, greatly minimizing the area that the thread lubricant must bridge off to effect a seal.
Tin plated couplings, lubricated with API modified thread lubricant 4.Detail Specification of the Casing 5.5 Body OD, 15.5 ppf, K-55 5.8.
Surplus Casing and Tubulars | SalvexWhen in the hand tight engagement, the threads have been interengaged to a point where they are in intimate contact but without deformation, preferably reached between 25 to 50 foot pounds.THREADING TO API SPECIFICATIONS: API Threads with couplings are extra strong for deep and high-deviated wells.If the connection successfully sealed to this point, the process was repeated with up to 10 degrees per 100 feet of bending.The pin member and box member of a second pipe section are then threaded or screwed (helically rotated) together up to a minimum of an empirically predetermined torque range.Connection designed with refined API BTC Threads and will make up with off-the-shelf API BTC threaded accessories. High Torque resistance.
The tubular joint is then observed and if the face 22A of the box member 20A is properly positioned relative to the triangle mark 16 on the pipe section 10A, the joint is acceptable and make-up is terminated.PERFORMANCE PROPERTIES Requirements for Leak Resistance of API. make-up torque values.Three test specimens were assembled, with makeup to the base of the triangle stamp, and submitted to testing.GB Tubulars Running Procedures. It should be noted that API does not specify makeup torques for API BTC.
Tubular Make-up - Loomis International | Houston, Texas USA
These box members have an interiorly-threaded female end corresponding to their respective pin members.Cause analysis of Casing thread damage. with a different sealing method in comparison with conventional BTC.A first pipe section 10A includes an externally threaded pin member 12 having a face 14 at its end.Following the coupling installation for a lot of pipe, histograms of mill-end makeup torque should be prepared.Recommended Make-Up Torque, API Tolerances, TFA Chart. Related searches for btc api thread chart Specification for Threading,.Casing Connection Selection for Geothermal Applications Using New Input from.Also, the tin plating on the couplings was specified as 2.5 mils, to simulate the worst case (thinnest) tin plating dimension within test specification.
Buttress Thread Casing, Wholesale Various High Quality Buttress Thread Casing Products from Global Buttress Thread Casing Suppliers and Buttress Thread Casing Factory.
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make up torque for casing_pdf - docscrewbanks.comThis combination produced zero thread interference at the pin nose when made up to the base of the API triangle stamp.The box member is plated with a metal substantially comprising tin.Analysis of Casing Connections Subjected to. element analysis of these three types of casing connections subjected to thermal cycle. torque shoulders, and.Therefore, the thread torque values can be prescribed for specific torque operation.
If required, the torque range is adjusted by empirically determined friction factors.CASING AND COUPLING Casing Technical specifications of Casing Casing Size.
Field of the Invention This invention relates to the field of tubular connections and methods for connecting tubular members, particularly for oilfield connections of threaded buttress pin and box members. 2. Background Description Pipe sections used in oil fields (for example long sections of well casing) usually have a tapered, exteriorly-threaded male end called a pin member.In the petroleum drilling and producing, the product is widely used in a variety of complex terrain due to.This is true for two reasons: 1) the internal pressure design rating of the thread material is higher and 2) the length of the thread helix is shorter.In addition to casing coupling, we also offer pup joint, EUE API.Torque shoulder prevents over make-up. type (EUE, STC, LTC, BTC), balancing flexibility with high torque.The operator inputs joint data, make-up specifications and limits,.
Phosphatized couplings, lubricated with API modified thread lubricant (Exxon Thredkote 706) 2.Pins and couplings were machined to provide the worst possible combination of tapers (fast pin and slow box) within API tolerances.All casing couplings are manufactured to API 5CT latest edition.Buttress Thread Casing (BTC) API SPEC 5B working ring or plug size, threads per inch and taper per foot chart.A teflon-containing thread lubricant 13 is applied to the threads, preferably the internal threads, prior to coupling.
This predetermined position window is the same for all pin members of a similar size, grade, weight and thread type (or form) and therefore the marks can be applied with a simple template prior to the make-up of the joint.Other pins and couplings were specially machined to provide the worst case thread width dimensions that were possible within API tolerances, as described earlier.The minimum makeup torque is the minimum amount of torque necessary to develop an arbitrarily derived tensile stress in the pin or compressive...Higher cost proprietary connections are routinely run in place of API buttress connections in high pressure gas applications.These buttress connections provide high tensile load capability, but do not always provide reliable gas sealability performance, and have therefore been used primarily for liquid service applications.Additional tests were conducted at a later date that were made-up to the apex of the triangle.The results indicated that this makeup condition is suitable for liquid pressure applications, but not for gas pressure applications.