SIMULATION MODEL OF NANO AND CONVENTIONAL DRILLING FLUIDS PERFORMANCE IN HORIZONTAL WELL

2017 ◽  
Vol 20 (2) ◽  
pp. 249-277
Author(s):  
Lina Jassim ◽  
Robiah Yunus
Keyword(s):  
Simulation Model ◽  
Horizontal Well ◽  
Drilling Fluids ◽  
Conventional Drilling

Formation-Damage and Well-Productivity Simulation

SPE Journal ◽  
2010 ◽  
Vol 15 (03) ◽  
pp. 751-769 ◽  
Author(s):  
Arild Lohne ◽  
Liqun Han ◽  
Claas van Zwaag ◽  
Hans van Velzen ◽  
Anne-Mette Mathisen ◽  
...  
Keyword(s):  
Simulation Model ◽  
Filter Cake ◽  
Transport Model ◽  
Selection Process ◽  
Mechanistic Modeling ◽  
Fluid Loss ◽  
Drilling Fluids ◽  
Fluid Viscosity ◽  
Field Scale ◽  
Particle Injection

Summary In this paper, we describe a simulation model for computing the damage imposed on the formation during overbalanced drilling. The main parts modeled are filter-cake buildup under both static and dynamic conditions; fluid loss to the formation; transport of solids and polymers inside the formation, including effects of porelining retention and pore-throat plugging; and salinity effects on fines stability and clay swelling. The developed model can handle multicomponent water-based-mud systems at both the core scale (linear model) and the field scale (2D radial model). Among the computed results are fluid loss vs. time, internal damage distribution, and productivity calculations for both the entire well and individual sections. The simulation model works, in part, independently of fluid-loss experiments (e.g., the model does not use fluid-leakoff coefficients but instead computes the filter-cake buildup and its flow resistance from properties ascribed to the individual components in the mud). Some of these properties can be measured directly, such as particle-size distribution of solids, effect of polymers on fluid viscosity, and formation permeability and porosity. Other properties, which must be determined by tuning the results of the numerical model against fluid-loss experiments, are still assumed to be rather case independent, and, once determined, they can be used in simulations at altered conditions as well as with different mud formulations. A detailed description of the filter-cake model is given in this paper. We present simulations of several static and dynamic fluid-loss experiments. The particle-transport model is used to simulate a dilute particle-injection experiment taken from the literature. Finally, we demonstrate the model's applicability at the field scale and present computational results from an actual well drilled in the North Sea. These results are analyzed, and it is concluded that the potential effects of the mechanistic modeling approach used are (a) increased understanding of damage mechanisms, (b) improved design of experiments used in the selection process, and (c) better predictions at the well scale. This allows for a more-efficient and more-realistic prescreening of drilling fluids than traditional core-plug testing.

scholarly journals Investigation: Cutting Transport Mechanism in Inclined Well Section under Pulsed Drilling Fluid Action

Energies ◽  
2021 ◽  
Vol 14 (8) ◽  
pp. 2141
Author(s):  
Xiaohua Zhu ◽  
Keyu Shen ◽  
Bo Li
Keyword(s):  
Drilling Fluid ◽  
Drill Pipe ◽  
Friction Torque ◽  
Drilling Fluids ◽  
Cuttings Transport ◽  
Turbulent Dissipation ◽  
Duty Cycles ◽  
Transport Velocity ◽  
Cuttings Bed ◽  
Conventional Drilling

Due to gravity, drilling cuttings are easily accumulated in an inclined well section, ultimately forming a cuttings bed, which places the drill pipe under strong friction torque. In severe cases, this can cause dragging, stuck drills, and broken drill tools. Because conventional drilling fluids are difficult to prevent the formation of cuttings in inclined well sections, a method of carrying cuttings with the pulsed drilling fluid to improve wellbore cleanness is proposed. Experiments and numerical simulations are conducted to investigate the effects of cuttings bed transport velocity, cuttings size, cuttings height, drill pipe rotation speed, cuttings bed mass, and roughness height. The optimal pulse parameters are determined per their respective impact on cuttings transport concerning varied periods, amplitudes, and duty cycles of the pulsed drilling fluid. Compared to cuttings transport under the conventional drilling fluid flow rate, the pulsed drilling fluid produces the turbulent dissipation rate, increases cuttings transport velocity, and thus improves the wellbore clearance rate.

New Generation of HTHP Water Based Drilling Fluid Changing Conventional Drilling Fluids Solutions

2020 ◽  
Author(s):  
Tariq Hasan Hamdan ◽  
Vaughn Reza Traboulay ◽  
Mohamad Husien ◽  
Salem Alblooshi ◽  
Mohamed Awadh Alhammami ◽  
...  
Keyword(s):  
Drilling Fluid ◽  
Drilling Fluids ◽  
Water Based ◽  
New Generation ◽  
Conventional Drilling

Applying a Reservoir Simulation Model to Drill a Horizontal Well in a Post-Steamflood Reservoir, Wilmington Field, California

2005 ◽  
Author(s):  
Philip Scott Hara ◽  
Julius J. Mondragon ◽  
Hung Henry Sun ◽  
Zhengming Yang ◽  
Iraj Ershaghi
Keyword(s):  
Simulation Model ◽  
Reservoir Simulation ◽  
Horizontal Well ◽  
Reservoir Simulation Model

Study on Lost Circulation in an Extended Horizontal Well in Cuba

2013 ◽  
Vol 765-767 ◽  
pp. 266-269
Author(s):  
Cheng Luo ◽  
Xiao Chun Cao ◽  
Yi Qin ◽  
Bei Ren Li
Keyword(s):  
Horizontal Well ◽  
Drilling Fluids ◽  
Cement Slurry ◽  
Processing Methods ◽  
Lost Circulation ◽  
Eastern Cuba ◽  
Controlling Measures ◽  
Lost Circulation Materials

An extended horizontal well was to be drilled in the eastern Cuba. Because lost circulation of drilling fluids and cement slurry could take place in the target sections, the controlling measures were studied. There were several processing measures. And Lost circulation materials (LCM) could be used when the loss of circulation happened. The test and processing methods were also introduced.

scholarly journals Ensemble-based optimization of hydraulically fractured horizontal well placement in shale gas reservoir through Hough transform parameterization

2021 ◽  
Author(s):  
Liang Xue ◽  
Shao-Hua Gu ◽  
Xie-Er Jiang ◽  
Yue-Tian Liu ◽  
Chen Yang
Keyword(s):  
Simulation Model ◽  
Shale Gas ◽  
Horizontal Well ◽  
Gas Production ◽  
Design Parameters ◽  
Hydraulic Fractures ◽  
Gas Reservoir ◽  
Well Drilling ◽  
Shale Gas Reservoir ◽  
Fractured Horizontal Well

AbstractShale gas reservoirs have been successfully developed due to the advancement of the horizontal well drilling and multistage hydraulic fracturing techniques. However, the optimization design of the horizontal well drilling, hydraulic fracturing, and operational schedule is a challenging problem. An ensemble-based optimization method (EnOpt) is proposed here to optimize the design of the hydraulically fractured horizontal well in the shale gas reservoir. The objective is to maximize the net present value (NPV) which requires a simulation model to predict the cumulative shale gas production. To accurately describe the geometry of the hydraulic fractures, the embedded discrete fracture modeling method (EDFM) is used to construct the shale gas simulation model. The effects of gas absorption, Knudsen diffusion, natural and hydraulic fractures, and gas–water two phase flow are considered in the shale gas production system. To improve the parameter continuity and Gaussianity required by the EnOpt method, the Hough transformation parameterization is used to characterize the horizontal well. The results show that the proposed method can effectively optimize the design parameters of the hydraulically fractured horizontal well, and the NPV can be improved greatly after optimization so that the design parameters can approach to their optimal values.

A New Type of Hydraulic Hammer Compatible with Conventional Drilling Fluids

2003 ◽  
Author(s):  
Joao Carlos R. Placido ◽  
Antonio Carlos V.M. Lage ◽  
Daltro J.L. Carvalho ◽  
Ronnie Hardie ◽  
Rasheed Wajid
Keyword(s):  
Drilling Fluids ◽  
Hydraulic Hammer ◽  
New Type ◽  
Conventional Drilling

scholarly journals Numerical study of cutting transport using aerated drilling fluids

2021 ◽  
Vol 2119 (1) ◽  
pp. 012051
Author(s):  
V A Zhigarev ◽  
S O Zazulya ◽  
A V Minakov ◽  
A L Neverov
Keyword(s):  
Fluid Flow ◽  
Horizontal Well ◽  
Numerical Study ◽  
Drilling Fluid ◽  
Rheological Parameters ◽  
Drilling Fluids ◽  
Cuttings Transport ◽  
Foaming Agent ◽  
Water Based ◽  
Drill Pipes

Abstract The paper deals with drilling fluid flow in a horizontal well during its drilling. As part of this work, rheological parameters of water-based drilling fluid with the addition of polymers and a foaming agent were used. Cuttings transport was studied at different degrees of foam aeration. Besides, the paper presents the study of the effects of drilling fluid flow, as well as the rotation of drill pipes on the cuttings transport.

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