Enhancement of Well Production in the SCOOP Woodford Shale through the Application of Microproppant
- James Calvin (Halliburton) | Bill Grieser (Halliburton) | Travis Bachman (Halliburton)
- Document ID
- Society of Petroleum Engineers
- SPE Hydraulic Fracturing Technology Conference and Exhibition, 24–26 January, The Woodlands, Texas, USA
- Publication Date
- Document Type
- Conference Paper
- 2017. Society of Petroleum Engineers
- 5.8.2 Shale Gas, 5 Reservoir Desciption & Dynamics, 4.1 Processing Systems and Design, 2.5.2 Fracturing Materials (Fluids, Proppant), 4.1.2 Separation and Treating, 2 Well completion, 5.8 Unconventional and Complex Reservoirs, 4 Facilities Design, Construction and Operation, 2.4 Hydraulic Fracturing
- Operational Efficiency, PDL, Natural Fractures, Fracture Complexity, Micro-proppant
- 0 in the last 30 days
- 971 since 2007
- Show more detail
- View rights & permissions
|SPE Member Price:||USD 5.00|
|SPE Non-Member Price:||USD 28.00|
This paper presents the incorporation of microproppant (MP) in stimulation treatment designs in the liquids-rich South Central Oklahoma Oil Province (SCOOP) Woodford and its effects on well production. When MP is used, it can enter secondary fractures that are too narrow and restricted for even conventional small proppant, such as 100-mesh sand, to enter and prop them open during production. Descriptions of the MP, area formation, numerical modeling, production results, and offset comparisons are presented.
In unconventional formations, communication between the secondary fracture network, which includes natural fractures and secondary fractures propagated during stimulation, and the wellbore is crucial for improved well production. Perhaps the most difficult objective to accomplish when treating unconventional formations is not just enhancing the number of secondary fractures opened, but increasing the number of those secondary fractures that remain open over a long period of time. During stimulation treatments, MP is pumped during the initial pad stages so it can enter the secondary fractures that are propagated, and keep them open when pressure on the formation is relieved during production.
An analysis of treatments conducted within the Woodford play, and associated numerical modeling, demonstrated the presence of pressure dependent leakoff (PDL), low stress anisotropy, and high net pressures as indications of reservoir complexity. Because of the predicted fracture complexity, a smaller proppant is necessary to prop the narrower secondary fractures. As a result, a series of field trials were conducted to examine the effectiveness of MP for enhancing well production. Comparisons are made between wells where MP was used and offset well production to demonstrate such impact. A description of treatment designs used is also presented for comparison. The wells where MP was pumped during the initial pad stages of stimulation treatments demonstrated significant production uplift compared to offset wells. Additionally, MP demonstrated a secondary benefit, which indirectly manifests in net treating pressure. PDL is believed to be a major contributor to excessively high treating pressures and screenouts in the area. Because the particle size of the MP enables better access to the narrower secondary fracture network, it also reduces entry friction associated with PDL. Such reduction has led to lower treating pressures, which subsequently has improved placement efficiency of stimulation treatments.
|File Size||2 MB||Number of Pages||18|
Barree, R.D. and Barree, V.L. 2007. Holistic Fracture Diagnostics. Presented at the Rocky Mountain Oil & Gas Technology Symposium, Denver, Colorado, 16-18 April. SPE-107877-MS. http://dx.doi.org/10.2118/107877-MS.
Cipolla, C.L., Lolan, E., Mayerhofer, M.J. 2009. The Effect of Proppant Distribution and Un-Propped Fracture Conductivity on Well Performance in Unconventional Gas Reservoirs. Presented at the SPE Hydraulic Fracturing Technology Conference, The Woodlands, Texas 19–21 January. SPE-119368-MS. http://dx.doi.org/10.2118/119368-MS.
Cote, A.J., Nguyen, T.H., Crawford, K.A., 2007. Case Study: Mixing Proppant Sizes To Control Pressure Dependent Leak-Off (PDL). Presented at the Rocky Mountain Oil & Gas Technology Symposium, Denver, Colorado, 16-18 April. SPE-108178-MS. http://dx.doi.org/10.2118/108178-MS.
Dahl, J., Calvin, J., Siddiqui, S., 2015a. Application of Micro-Proppant in Liquids-Rich, Unconventional Reservoirs to Improve Well Production: Laboratory Results, Field Results, and Numerical Simulations. Presented at the Abu Dhabi International Petroleum Exhibition and Conference, Abu Dhabi, UAE, 9-12 November. SPE-177663-MS. http://dx.doi.org/10.2118/177663-MS.
Dahl, J., Nguyen, P., Dusterhoft, R. 2015b. Application of Micro-Proppant to Enhance Well Production in Unconventional Reservoirs: Laboratory and Field Results. Presented at the SPE Western Regional Meeting, Garden Grove, California, USA 27-30 April. SPE-174060-MS. http://dx.doi.org/10.2118/174060-MS.
Fisher, M.K., Wright, C.K., Davidson. B.M. 2002. Integrating Fracture Mapping Technologies to Optimize Stimulations in the Barnett Shale. Presented at the SPE Annual Technical Conference and Exhibition, San Antonio, Texas, 29 September-2 October. SPE-77441-MS. http://dx.doi.org/10.2118/77441-MS.
Grieser, W.V. 2011. Oklahoma Woodford Shale: Completion Trends and Production Outcomes from Three Basins. Presented at the SPE Production and Operations Symposium, Oklahoma City, Oklahoma, USA 27–29 March. SPE-139813-MS. http://dx.doi.org/10.2118/139813-MS.
Manoorkar, S., Sedes, O., and Morris, J.F. 2016. Particle Transport in Laboratory Models of Bifurcating Fractures. Journal of Natural Gas Science and Engineering. 33: 1169–1180. http://dx.doi.org/10.1016/j.jngse.2016.04.008.
Mayerhofer, M.J., Lolon, E., Warpinski, N.R. 2008. What is Stimulated Rock Volume? SPE Shale Gas Production Conference, Fort Worth, Texas, 16-18 November. SPE-119890-MS. http://dx.doi.org/10.2118/119890-MS.
Nguyen, P.D., Vo, J.K., Mock, B.D. 2013. Evaluating Treatment Methods for Enhancing Microfracture Conductivity in Tight Formations. Presented at the SPE Unconventional Resources Conference and Exhibition-Asia Pacific, Brisbane, Australia, 11–13 November. SPE-167092-MS. http://dx.doi.org/10.2118/167092-MS.
Northcutt, J.C., Robertson, C.J., Hannah, R.R., 1988. State-of-the-Art Fracture Stimulation of the Upper Morrow Formation in the Anadarko Basin. Presented at the SPE Annual Technical Conference and Exhibition, Houston, Texas, 2-5 October. SPE-18260-MS. http://dx.doi.org/10.2118/18260-MS.
Warpinski, N.R., Branagan, P.T., Peterson, R.E. 1998. An Interpretation of M-Site Hydraulic Fracture Diagnostic Results. Presented at the SPE Rocky Mountain Regional/Low-Permeability Reservoirs Symposium, Denver, Colorado 5–8 April. SPE-39950-MS. http://dx.doi.org/10.2118/39950-MS.
Warpinski, N.R., Mayerhofer, M.J., Vincent, M.C. 2008. Stimulating Unconventional Reservoirs: Maximizing Network Growth While Optimizing Fracture Conductivity. Presented at the SPE Unconventional Reservoirs Conference, Keystone, Colorad, 10–12 February. SPE-114173-MS. http://dx.doi.org/10.2118/114173-MS.
Warpinski, N.R. 2009. Stress Amplification and Arch Dimensions In Proppant Beds Deposited by Waterfracs. Presented at the SPE Hydraulic Fracturing Technology Conference, The Woodlands, Texas, 19–21 January. SPE-119350-MS. http://dx.doi.org/10.2118/119350-MS.
Wood, D.D., Schmit, B.E., Riggins, L. 2011. Cana Woodford Stimulation Practices-A Case History. Presented at the North American Unconventional Gas Conference and Exhibition, The Woodlands, Texas, 14–16 June. SPE-143960-MS. http://dx.doi.org/10.2118/143960-MS.
Woodworth, T.R. and Miskimins, J.L. 2007. Extrapolation of Laboratory Proppant Placement Behavior to the Field in Slickwater Fracturing Applications. Presented at the SPE Hydraulic Fracturing Technology Conference, College Station, Texas, 29–31 January. SPE-106089-MS. http://dx.doi.org/10.2118/106089-MS.