Using Real-Time Downhole Microseismic To Evaluate Fracture Geometry for Horizontal Packer-Sleeve Completions in the Bakken Formation, Elm Coulee Field, Montana
- Darien G. O'Brien (Solutions Engineering) | Robert T. Larson Jr. (Enerplus Resources (USA) Corporation) | Ron Parham (Enerplus Resources (USA) Corporation) | Blane L. Thingelstad (Enerplus Resources (USA) Corporation) | William W. Aud (Integrated Petroleum Technologies Inc.) | Richard A. Burns (Integrated Petroleum Technologies Inc.) | Leen Weijers (Pinnacle/Halliburton)
- Document ID
- Society of Petroleum Engineers
- SPE Production & Operations
- Publication Date
- February 2012
- Document Type
- Journal Paper
- 27 - 43
- 2012. Society of Petroleum Engineers
- 2.5.4 Multistage Fracturing, 3 Production and Well Operations, 4.1.2 Separation and Treating, 1.6 Drilling Operations, 5.7.2 Recovery Factors, 2.5.2 Fracturing Materials (Fluids, Proppant)
- horizontal well, microseismic, slideable sleeves, Elm Coulee, Bakken
- 1 in the last 30 days
- 1,207 since 2007
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Multistage fracturing in the Bakken formation, Elm Coulee field, Williston basin, Montana, has been performed using hydraulic packers for zonal isolation with ball-actuated fracture sleeves to improve performance of horizontal wells. Optimizing development drilling and fracture-treatment designs for horizontal wells requires an estimation of the fracture geometry (azimuth, height, and half-length, with respect to lateral orientation). A fracture treatment designed under the assumption that a longitudinal fracture (along the length of the borehole) will be entirely inadequate if the actual fracture propagates in a transverse orientation (perpendicular to the length of the borehole) and vice versa. Recovery factor and reserves estimation, interference, drainage, and well spacing require an understanding of the created fracture geometry from multistage completions.
This paper describes how real-time downhole microseismic monitoring, fracture-treatment pressure interpretation, and subsequent production evaluation were used to better understand the created-fracture geometry, completion staging efficiency, and fracture-stimulation effectiveness in a project with two parallel 4,000-ft middle-Bakken treatment horizontal wells 2,000 ft apart with a horizontal well in between. The following topics will be discussed as part of this paper:
- Success and failure in achieving proper stage isolation, diversion, and fracture-stimulation coverage using hydraulic packers for zonal isolation with ball-actuated fracture sleeves in two 4,000-ft laterals.
- Fracture azimuth and half-length as related to entry-point spacing and intersections with nearby wells.
- Fracture-height growth up into the Lodgepole limestone and down into the Three Forks formation as related to microseismic location uncertainties and use of this information in fracture-model calibration.
- Discussion and comparison of the production response for past completion strategies to the current approach, as well as discussion about production interference between horizontal wells.
The integration of fracturing-mechanics studies that began with the initial vertical wells and concluded with current-day horizontal applications in concert with detailed reservoir-engineering evaluations has resulted in significant production improvement in the Bakken formation, Elm Coulee field, Williston basin, Montana. Detailed reservoir engineering led to optimized multistage fracturing that was applied using hydraulic packers for zonal isolation with ball-actuated fracture sleeves to improve performance of horizontal wells. Using a calibrated/customized fracture model that had been developed from evaluation of hundreds of wells in the basin, the fracture-treatment pump schedules were designed to minimize fracture complexity and optimize lateral proppant placement to attempt to create an ideal transverse-fracture geometry within a horizontal well. Microseismic imaging was used to confirm the historical information in the basin, fracture mechanics studies, and customized models relative to the azimuth, height, and half-length with respect to lateral orientation.
|File Size||7 MB||Number of Pages||17|
Aud, W.W., Poulson, T.D., Burns, R.A., Rushing, T.R., and Orr, W.D. 1999.Lateral Proppant Distribution: The Good, the Bad, and the Ugly of Putting FracJobs Away. Paper SPE 56725 presented at the SPE Annual Technical Conference andExhibition, Houston, 3-6 October. http://dx.doi.org/10.2118/56725-MS.
Besler, M.R., Steele, J.W., Egan, T., and Wagner, J. 2007. Improving WellProductivity and Profitability in the Bakken--A Summary of Our ExperiencesDrilling, Stimulating, and Operating Horizontal Wells. Paper SPE 110679presented at the SPE Annual Technical Conference and Exhibition, Anaheim,California, USA, 11-14 November. http://dx.doi.org/10.2118/110679-MS.
Cramer, D.D. 1986. Reservoir Characteristics and Stimulation Techniques inthe Bakken Formation and Adjacent Beds, Billings Nose Area, Williston Basin.Paper SPE 15166 presented at the SPE Rocky Mountain Regional Meeting, Billings,Montana, USA, 19-21 May. http://dx.doi.org/10.2118/15166-MS.
Cramer, D.D. 1992. Treating-Pressure Analysis in the Bakken Formation. JPet Technol 44 (1): 20-27. SPE-21820-PA. http://dx.doi.org/10.2118/21820-PA.
Dunek, K.L., Walser, D.W., and Astakhov, D.K. 2009. Far-Field VolumetricDistribution of Fracturing Fluids Away From an Uncemented Horizontal Liner inthe Bakken Formation. Paper SPE 115826 presented at the SPE Rocky MountainPetroleum Technology Conference, Denver, 14-15 April. http://dx.doi.org/10.2118/115826-MS.
Harris, P.C., Morgan, R.G., and Heath, S.J. 2005. Measurement of ProppantTransport of Frac Fluids. Paper SPE 95287 presented at the SPE Annual TechnicalConference and Exhibition, Dallas, 9-12 October. http://dx.doi.org/10.2118/95287-MS.
Lantz, T., Greene, D., Eberhard, M., Norrid, S., and Pershall, R. 2007.Refracture Treatments Proving Successful in Horizontal Bakken Wells: RichlandCounty, Montana. Paper SPE 108117 presented at the Rocky Mountain Oil and GasTechnology Symposium, Denver, 16-18 April. http://dx.doi.org/10.2118/108117-MS.
LeFever, J.A. 1990. History of Oil Production from the Bakken Formation,North Dakota. Proc., Montana Geological Society Bakken Workshop,Billings, Montana, USA, 27 March, 3-17.
Lolon, E., Cipolla, C., Weijers, L., Hesketh, R.E., and Grigg, M.W. 2009.Evaluating Horizontal Well Placement and Hydraulic FractureSpacing/Conductivity in the Bakken Formation, North Dakota. Paper SPE 124905presented at the SPE Annual Technical Conference and Exhibition, New Orleans,4-7 October. http://dx.doi.org/10.2118/124905-MS.
Long, G. 2008. U.S. Crude Oil, Natural Gas Liquids Proved Reserves, 2008.Annual Report, US Energy Information Administration (EIA), Washington, DC (31December 2008). http://www.eia.gov/natural_gas/data_publications/crude_oil_natural_gas_reserves/cr.html.
Mayerhofer, M.J., Lolon, E.P., Warpinski, N.R., Cipolla, C.L., Walser, D.,and Rightmire, C.M. 2010. What Is Stimulated Reservoir Volume? SPE Prod& Oper 25 (1): 89-98. SPE-119890-PA. http://dx.doi.org/10.2118/119890-PA.
Olsen, T.N., Gomez, E., McCrady, D.D., Forrest, G.S., Perakis, A., andKaufman, P. 2009. Stimulation Results and Completion Implications From theConsortium Multiwell Project in the North Dakota Bakken Shale. Paper SPE 124686presented at the SPE Annual Technical Conference and Exhibition, New Orleans,4-7 October. http://dx.doi.org/10.2118/124686-MS.
Phillips, Z.D., Halverson, R.J., Strauss, S.R., Layman II, J.M., and Green,T.W. 2007. A Case Study in the Bakken Formation: Changes to Hydraulic FractureStimulation Treatments Result in Improved Oil Production and Reduced TreatmentCosts. Paper SPE 108045 presented at the Rocky Mountain Oil & GasTechnology Symposium, Denver, 16-18 April. http://dx.doi.org/10.2118/108405-MS.
Pitman, J.K., Price, L.C., and LeFever, J.A. 2001. Diagenesis and FractureDevelopment in the Bakken Formation, Williston Basin: Implications forReservoir Quality in the Middle Member. USGS Professional Paper 1653, Version1.0, US Geological Survey, Washington, DC (November 2001).
Wiley, C., Barree, B., Eberhard, M., and Lantz, T. 2004. Improved HorizontalWell Stimulations in the Bakken Formation, Williston Basin, Montana. Paper SPE90697 presented at the SPE Annual Technical Conference and Exhibition, Houston,28-29 September. http://dx.doi.org/10.2118/90697-MS.
Zimmer, U., Maxwell, S.C., Waltman, C.K., and Warpinski, N.R. 2009.Microseismic Monitoring Quality-Control (QC) Reports as an Interpretative Toolfor Nonspecialists. SPE J. 14 (4): 737-745. SPE-110517-PA.http://dx.doi.org/10.2118/110517-PA.