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Keywords: curvature
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Proceedings Papers

Paper presented at the SPE/ICoTA Coiled Tubing and Well Intervention Conference and Exhibition, March 21–22, 2017
Paper Number: SPE-184750-MS
.... Table 1 The curvature of each layer along a 5500 ft string of 2-inch diameter tubing. Both LCF and HCF damage must be considered, since significant LCF damage occurs along the string each time the tubing is moved into or out of the water. Fig. 3 shows the large bending strain...
Proceedings Papers

Paper presented at the SPE/ICoTA Coiled Tubing & Well Intervention Conference & Exhibition, March 24–25, 2015
Paper Number: SPE-173641-MS
... values provided a stress-strain model similar in shape to Figure 2 . Figure 3 shows the stress and strain at the top surface of the CT for bend / straighten / bend, for a 6 ft radius of curvature and for a −6 ft radius of curvature, for comparison with the test data in Figure 2 . Note that for the...
Proceedings Papers

Paper presented at the SPE/ICoTA Coiled Tubing and Well Intervention Conference and Exhibition, March 25–26, 2014
Paper Number: SPE-168235-MS
... difference in the horizontal length that could be achieved. Typically, if CT buckling doesn’t occur in the curved portion of the well, the rate of wellbore curvature should have minimal impact on the horizontal length that can be achieved. However, note that the product of these 3 FTF values was 15% instead...
Proceedings Papers

Paper presented at the SPE/ICoTA Coiled Tubing & Well Intervention Conference & Exhibition, March 26–27, 2013
Paper Number: SPE-163884-MS
... change along the length of the CT. When the process is used for multiple CT strings, statistical metrics about the strings can be mined from a web based database. Coiled tubing operations curvature prediction system Completion Installation and Operations tipton information Upstream Oil...
Proceedings Papers

Paper presented at the SPE/ICoTA Coiled Tubing & Well Intervention Conference & Exhibition, March 26–27, 2013
Paper Number: SPE-163940-MS
... & Gas pipe performance CT pipe fatigue life curvature diameter pipe failure mechanism reel Completion Installation and Operations spe 163940 pipe dynamic condition internal pressure fatigue test machine Coiled tubing operations field failure hoop stress severe dynamic condition angular...
Proceedings Papers

Paper presented at the SPE/ICoTA Coiled Tubing & Well Intervention Conference and Exhibition, March 27–28, 2012
Paper Number: SPE-154057-MS
..., it contains residual curvature as a result of prior bending events (i.e. being wrapped around the coiled tubing reel). Coiled tubing straighteners are being used increasingly during field operations to remove this residual curvature in order to help delay the onset of coiled tubing lockup and...
Proceedings Papers

Paper presented at the SPE/ICoTA Coiled Tubing and Well Intervention Conference and Exhibition, March 20–21, 2007
Paper Number: SPE-106979-MS
... Directional Drilling curvature plane vector friction simulated horizontal wellbore torque drilling operation variation rotation application equation Upstream Oil & Gas horizontal wellbore wellbore vibration pipe residual bend society of petroleum engineers rotation...
Proceedings Papers

Paper presented at the SPE/ICoTA Coiled Tubing Conference & Exhibition, April 4–5, 2006
Paper Number: SPE-100068-MS
... Abstract Conventional coiled tubing endures severe above-ground bending and straightening cycles that cause low-cycle fatigue to be the predominant factor limiting its useful life. For conventional coiled tubing, downhole bending events associated with wellpath curvature are negligible since...
Proceedings Papers

Paper presented at the SPE/ICoTA Coiled Tubing Conference and Exhibition, April 12–13, 2005
Paper Number: SPE-94235-MS
... foam fluid curvature ratio xanthan foam friction factor flow rate completion installation and operations friction pressure loss upstream oil & gas drilling fluid chemistry coiled tubing operations apparent viscosity hydraulic fracturing drilling fluid property production control...
Proceedings Papers

Paper presented at the SPE/ICoTA Coiled Tubing Conference and Exhibition, March 23–24, 2004
Paper Number: SPE-89455-MS
... CT. Parameters and effects of practical importance are computed, e.g., hook-load, bottom force, curvature effects in the frictional pressure drop when the CT is on the reel, cable inside the CT, pick-up and slack-off, effects pertinent to drilling with CT, etc. Buckling and lock-up check are...
Proceedings Papers

Paper presented at the SPE/ICoTA Coiled Tubing Conference and Exhibition, April 9–10, 2002
Paper Number: SPE-74831-MS
... mcspadden bent spe 74831 stiff string force model drillstring design force model upstream oil & gas completion installation and operations soft-string model wall contact force coiled tubing operations residual stress residual curvature curvature radial clearance stiffness...
Proceedings Papers

Paper presented at the SPE/ICoTA Coiled Tubing Conference and Exhibition, April 9–10, 2002
Paper Number: SPE-74847-MS
... fluid type spe 74847 correlation curvature drilling fluid formulation reynolds number variation coiled tubing operations friction pressure loss drilling fluid chemistry flow rate drilling fluid selection and formulation drilling fluid property upstream oil & gas average...
Proceedings Papers

Paper presented at the SPE/ICoTA Coiled Tubing Roundtable, March 15–16, 1998
Paper Number: SPE-46009-MS
... Abstract In practical coiled tubing drilling and completion operations minor curvature always exists in coiled tubing (CT). The authors previously published that CT initial configuration results in the momentous reduction of the axial compression force required to produce helical configuration...
Proceedings Papers

Paper presented at the SPE/ICoTA Coiled Tubing Roundtable, March 15–16, 1998
Paper Number: SPE-46007-MS
... This paper was prepared for presentation at the 1998 SPE/IcoTA Coiled Tubing Roundtable held in Houston, Texas, 15-16 April 1998. chain stripper alignment buckle injector sprocket slenderness ratio compressive load variation curvature stripper spe 46007 internal pressure ct...
Proceedings Papers

Paper presented at the SPE Gulf Coast Section/ICoTA North American Coiled Tubing Roundtable, February 26–28, 1996
Paper Number: SPE-36336-MS
... transient behavior and multilateral effects. Implications from these results for depth calculation are discussed. history elongation well intervention internal pressure cross section curvature axial loading downhole intervention hoop stress injector plastic deformation production...

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