An Integrated Study of Mud Plastering Effects for Reducing Filtrate's Invasion
- C. Ezeakacha (Uninversity of Louisiana at Lafayette) | S. Salehi (University of Oklahoma) | A. Ghalambor (Oil Center Research International) | M. Karimi (Weatherford International)
- Document ID
- Society of Petroleum Engineers
- SPE International Conference and Exhibition on Formation Damage Control, 24-26 February, Lafayette, Louisiana, USA
- Publication Date
- Document Type
- Conference Paper
- 2016. Society of Petroleum Engineers
- 3 Production and Well Operations, 1.6.9 Coring, Fishing, 1.6 Drilling Operations, 1.11 Drilling Fluids and Materials, 1.8 Formation Damage
- Plastering, Near Wellbore Stress, Mud Cake
- 2 in the last 30 days
- 212 since 2007
- Show more detail
- View rights & permissions
|SPE Member Price:||USD 9.50|
|SPE Non-Member Price:||USD 28.00|
Drilling fluid's filtration and mud cake build up is often cited as one of the key factors where operators observed better control of lost circulation from one well to another. Although this may sound a routine and simplistic process, it is quite complex. To understand a true synthesis of mud cake build up, one needs to study effects of mud composition, viscosity, and fluid mechanics involved, filtration permeability, and erosion and depositional factors. In addition of these factors, there are effects of time, pressure and temperature.
In this study, a synthesis of mud filtration and mud cake build up by conducting laboratory experiments is presented. The study presents results for Non-aqueous Oil Based Muds (OBM). The methodology depends on conducting Permeability Plug Testing (PPT), SEM and EDS analysis of mud filtrates and mud cakes. We present analysis in different time spans to capture time effects for tests in high pressure and temperature conditions. Other experimental variables in this work are permeability and heterogeneity of filtration medium which are implemented by using different rock disks.
A combination of SEM study of filter-cake structures with the evaluation of experimentally determined fluid loss data leads to a better understanding of the basic principles of filter-cake buildup and formation damage. The key findings from this study are the effects of filtration medium on cumulative mud filtrate loss, invasion and mud cake characterization, and its permeability. This could not be achieved by using ceramic disks traditionally used for PPT experiments. Effects of core permeability variation on mud invasion under high pressure and high temperature conditions have been illustrated.
|File Size||3 MB||Number of Pages||13|
Farahani, M., Soleimani, R., Jamshidi, S. and Salehi, S. 2014. Development of a Dynamic Model for Drilling Fluid's Filtration: Implication to Prevent Formation Damage. Presented at the SPE International Symposium and Exhibition on formation Damage Control, Lafayette, Louisiana, 26–28 February. SPE-168151-MS.
Jiao, D. and Sharma, M.M. 1994. Mechanism of Cake Buildup in Crossflow Filtration of Colloidal Suspensions. Journal of Colloid and Interface Science 162 (2): 454–462. DOI: DOI: 10.1006/jcis.1994.1060.
Salehi, S., Hussmann, S., Karimi, M., Ezeakacha, C.P., Tavanaei, A. 2014. Profiling Drilling Fluid's Invasion Using Scanning Electron Microscopy: Implications for Bridging and Wellbore Strengthening Effects. Paper SPE 170315 presented at SPE Deepwater Drilling and Completions Conference held in Galveston Texas, 10–11 September.
Salehi, S., Karimi, M., Shahri, M. P., Aladsani, A., Ezeakacha, C.P., 2013. All in One for All in One for Casing while Drilling Technology: Numerical, Analytical, and Experimental Results and Field Observations. Paper SPE 166112 presented at SPE Annual Technical Conference and Exhibition, New Orleans, Louisiana, 30 September-2 October.
Tien, C., Bai, R., and Ramarao, B.V. 1997. Analysis of Cake Growth in Cake Filtration: Effect of Fine Particle Retention. AIChE Journal 43 (1): 33–44. DOI: 10.1002/aic.690430106.