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An Innovative Approach to Improve Cleaning Efficiency of Filter Cake in Gas & Oil Drilling Wells

Dr Lakkimsetty Nageswara Rao, Yousuf Nasser Hammod Al-Wahaibi


Drilling fluids are the complex fluids used for the drilling of oil and gas wells. The effective completion of an oil and gas well and invention of hydrocarbons from the oil and gas reservoir depends to a significant extent on the properties of drilling fluids selected during drilling operations. Filter cake stick provisionally until it is removed by dissolvers at the last stage of the well drilling. Theoretically the filter cake is composed of the mud contents; starch, polymer and weighting materials (CaCO3) and all are removed by acid and enzyme dissolvers. However, filter cake contains unknown percent of drilled solids that may not be soluble by the conventional dissolvers. The main attentiveness of this paper is to study the effect of drill solids percent and types (shale/clay, sand or other minerals) in mud cake in order to come up with best methodology of cleaning the filter cake that contain both mud contents and drilled solids. It was observed that the comprehensive removal of filter cake will lead to increase in productivity of oil & gas wells.

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L.E. Treiber, S.H. Yang (1986), Society of Petroleum Engineer', The Nature of Polymer Plugging and a Wellbore Treatment To Minimize It, (SPE-14948-MS), pp. 313.

Najim Abdulla Al-Kitany, Bisweswar Ghosh Ali S. Bemani. Hamoud Khalfan H. Al-Hadrami | Yahya Mansoor Al-Wahaibi (2008), Society of Petroleum Engineer', Evaluation of Wellbore clean up fluid by comparing laboratory with field production date, (SPE-118140), pp. 62.

Yasser Elmoghazy Fakhreldin (2011), Society of Petroleum Engineer, Novel Quantitative Method for Estimating Breaker Filter Cake Cleaning Efficiency, (SPE-148524), pp. 9-12.

L. Mattar and M. Santo (1992) 'Society of Petroleum Engineer', How Wellbore Dynamics Affect Pressure Transient Analysis, 31(PETSOC-92-02-03), pp. 60-62.

Al-Yami, A.S., Nasr-El-Din, H.A., Al-Shafei, M.A. et al. 2010. Impact of Water-based Drilling-In Fluids on Solids Invasion and Damage Characteristics. SPE Production & Operations 25 (1): pp. 40-49.

Gillot, B., El Guendouzi, M., and Laarj, M. 2001. Particle Size Effects on the Oxidation-Reduction Behavior of Mn3O4 Hausmannite. Materials Chemistry and Physics 70 (1): 54-60.


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