Surge and Drag Analysis for Extended Reach Casing and Casing Flotation Operations With Centralizers: A Design Challenge?
- G. Robello Samuel (Halliburton) | Colin J. Mason (BP Exploration)
- Document ID
- Society of Petroleum Engineers
- SPE Drilling & Completion
- Publication Date
- December 2009
- Document Type
- Journal Paper
- 473 - 483
- 2009. Society of Petroleum Engineers
- 2 Well Completion, 1.6.3 Drilling Optimisation, 1.6.1 Drilling Operation Management, 4.2.4 Risers, 1.10 Drilling Equipment, 1.6 Drilling Operations, 1.6.10 Running and Setting Casing, 1.14 Casing and Cementing, 4.1.2 Separation and Treating, 3 Production and Well Operations, 1.11.2 Drilling Fluid Selection and Formulation (Chemistry, Properties), 1.10.1 Drill string components and drilling tools (tubulars, jars, subs, stabilisers, reamers, etc), 1.14.1 Casing Design
- 1 in the last 30 days
- 1,407 since 2007
- Show more detail
- View rights & permissions
|SPE Member Price:||USD 5.00|
|SPE Non-Member Price:||USD 35.00|
Refining advanced technologies for the successful completion of wells is paramount in high-risk, high-cost environments. Challenges are associated with complex well architectures and with the successful completion of wells deploying conventional or floated casing or liner strings. A key part of the design process is to be able to predict both maximum downhole surge pressures and dynamic and static friction effects. The analysis also needs to take into account the impact of using centralizing devices. Understanding these effects during both casing running and reciprocation is important so that appropriate operational decisions can be made. Specific challenges are associated with running liners through casing strings or hole sections with limited annular clearance.
Centralizers are primarily installed on a casing string to provide adequate stand-off for primary cementing operations; however they are also sometimes used to aid in the deployment of casing strings. To achieve adequate stand-off, calculations are performed to determine the number of centralizers, their placement, and spacing frequency. Drag modeling is performed to ensure that the casing string will reach its target depth. This requires predictions of both static and dynamic drag effects that take into account the impact of centralizers and surge pressures on drag. In cases where non rigid centralizers are used, conventional torque and drag models underestimate frictional drag effects. Similarly it is considered that steady state surge models under-predict maximum surge pressures.
To address these concerns, both improved models and comprehensive analysis are required. This paper describes the analytical models that are used to incorporate additional forces associated with centralizers. Both conventional and floated casing running scenarios, especially in close tolerance extended reach wells, are considered.
|File Size||579 KB||Number of Pages||11|
Eck-Olsen, J., Haugom, R., Løklingholm, G., and Sletten, H. 2007. Floatation of 10 3/4-in. Liner--AMethod Used to Reach Beyond 10 km. Paper SPE 105839 presented at theSPE/IADC Drilling Conference, Amsterdam, 20-22 February. doi:10.2118/105839-MS.
Lal, M. 1983. Surge and SwabModeling for Dynamic Pressures and Safe Trip Velocities. Paper SPE 11412presented at the IADC/SPE Drilling Conference, New Orleans, 20-23 February.doi: 10.2118/11412-MS.
Lubinski, A., Hsu, F.H., and Nolte, K.G. 1977. Transient Pressure Surges Due toPipe Movement in an Oil Well. Oil & Gas Science and Technology--Rev.IFP 32 (3): 307-348. doi: 10.2516/ogst:1977019.
Mason, C.J., Allen, F.M., Ramirez, A.A., Wolfson, L., and Tapper, R. 1999.Casing Running Milestones forExtended-Reach Wells. Paper SPE 52842 presented at the SPE/IADC DrillingConference, Amsterdam, 9-11 March. doi: 10.2118/52842-MS.
Mason, C.J., Lopez, J., Meling, S., Munger, R., and Fraser, B. 2003. Casing Running Challenges forExtended-Reach Wells. Paper SPE 84447 presented at the SPE Annual TechnicalConference and Exhibition, Denver, 5-8 October. doi: 10.2118/84447-MS.
Mitchell, R.F. 1988. DynamicSurge/Swab Pressure Predictions. SPE Drill Eng 3 (3):325-333. SPE-16156-PA. doi: 10.2118/16156-PA.
Peterson, E.M., Greener, M.R., Davis, E.R., and Craig, D.T. 2007. How Much is Left of Your CentralizerAfter Exiting a Casing Window in an Extended Reach Horizontal Multilateral?Modeling, Yard Tests, and Field Results from Alaska's West Sak Development.Paper SPE 105766 presented at the SPE/IADC Drilling Conference, Amsterdam,20-22 February. doi: 10.2118/105766-MS.
Rogers, H., Bayramov, A., and Samuel, G.R. 2006. Integral Centralizer Suband Enhanced Torque and Drag Calculations Improve Casing Installation.Presented at the Deep Offshore Technology International Conference andExhibition, Houston, 28-30 November.
Rogers, H.E., Bolado, D.L., and Sullaway, BL. 1998. Buoyancy Assist Extends Casing Reachin Horizontal Wells. Paper SPE 50680 presented at the European PetroleumConference, The Hague, 20-22 October. doi: 10.2118/50680-MS.
Samuel, G.R. 2007. Downhole Drilling Tools: Theory and Practice forEngineers and Students. Tulsa, Oklahoma: Gulf Publishing Company.
Samuel, G.R., Bajwa, F., Franklin, M., and LeBlanc, J. 2002. Modelaccurately predicts intermediate casing-run surge pressure in Marlin SS-1 well.Oil & Gas Journal 100 (34).
Samuel, G.R., McColpin, G., and Bern, P. 2001. Dynamic swab-surge model:Validation/field examples. World Oil 222 (12).
Samuel, G.R., Sunthankar, A., McColpin, G., Bern, P., and Flynn, T. 2003. Field Validation of TransientSwab-Surge Response with Real-Time Downhole Pressure Data. SPE DrillEng 18 (4): 280-283. SPE-85109-PA. doi: 10.2118/85109-PA.