FEASIBILITY STUDY OF 3D GEOMECHANICAL MODEL CONSTRUCTION FOR SAND PRODUCTION CONTROL

In this article the expediency of using the coupled hydrodynamic and geomechanical model for prediction of sand production probability is considered. Additionally to the review of scientific papers a comparison is made of results obtained by several synthetic models in the course of the experiment. Based on the study results there was prepared a list of the fields characteristics the presence of which should indicate the necessity of using the coupled hydrodynamic geomechanical model for calculation of conditions that might lead to sand production.

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Sand production control by chemical consolidation

Journal of Petroleum Science and Engineering ◽

10.1016/j.petrol.2009.02.005 ◽

2009 ◽

Vol 67 (1-2) ◽

pp. 34-40 ◽

Cited By ~ 22

Author(s):

M.R. Talaghat ◽

F. Esmaeilzadeh ◽

D. Mowla

Keyword(s):

Production Control ◽

Sand Production

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Impact of High Resolution 3D Geomechanics on Well Optimization in the Southern Gulf of Suez, Egypt

10.2118/206271-ms ◽

2021 ◽

Author(s):

Mohamed Elkhawaga ◽

Wael A. Elghaney ◽

Rajarajan Naidu ◽

Assef Hussen ◽

Ramy Rafaat ◽

...

Keyword(s):

High Resolution ◽

Pore Pressure ◽

Cost Optimization ◽

Oil Field ◽

Wellbore Stability ◽

Gulf Of Suez ◽

Geomechanical Model ◽

3D Geomechanical Model ◽

The Cost ◽

The Impact

Abstract Optimizing the number of casing strings has a direct impact on cost of drilling a well. The objective of the case study presented in this paper is the demonstration of reducing cost through integration of data. This paper shows the impact of high-resolution 3D geomechanical modeling on well cost optimization for the GS327 Oil field. The field is located in the Sothern Gulf of Suez basin and has been developed by 20 wells The conventional casing design in the field included three sections. In this mature field, especially with the challenge of reducing production cost, it is imperative to look for opportunites to optimize cost in drilling new wells to sustain ptoduction. 3D geomechanics is crucial for such cases in order to optimize the cost per barrel at the same time help to drill new wells safely. An old wellbore stability study did not support the decision-maker to merge any hole sections. However, there was not geomechanics-related problems recorded during the drilling the drilling of different mud weights. In this study, a 3D geomechanical model was developed and the new mud weight calculations positively affected the casing design for two new wells. The cost optimization will be useful for any future wells to be drilled in this area. This study documents how a 3D geomechanical model helped in the successful delivery of objectives (guided by an understanding of pore pressure and rock properties) through revision of mud weight window calculations that helped in optimizing the casing design and eliminate the need for an intermediate casing. This study reveals that the new calculated pore pressure in the GS327 field is predominantly hydrostatic with a minor decline in the reservoir pressure. In addition, rock strength of the shale is moderately high and nearly homogeneous, which helped in achieving a new casing design for the last two drilled wells in the field.

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Study of Sand Production Using Geomechanical and Hydro-Mechanical Models

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.876.181 ◽

2018 ◽

Vol 876 ◽

pp. 181-186

Author(s):

Son Tung Pham

Keyword(s):

Production Rate ◽

Mechanical Model ◽

Failure Criteria ◽

Sand Production ◽

Geomechanical Model ◽

Strength Failure ◽

Rate Versus ◽

Mechanical Models ◽

Rock Mechanical Properties ◽

Bottomhole Pressure

Sand production is a complicated physical process depending on rock mechanical properties and flow of fluid in the reservoir. When it comes to sand production phenomenon, many researchers applied the Geomechanical model to predict the pressure for the onset of sand production in the reservoir. However, the mass of produced sand is difficult to determine due to the complexity of rock behavior as well as fluid behavior in porous media. In order to solve this problem, there are some Hydro – Mechanical models that can evaluate sand production rate. As these models require input parameters obtained by core analysis and use a large empirical correlation, they are still not used popularly because of the diversity of reservoirs behavior in the world. In addition, the reliability of these models is still in question because no comparison between these empirical models has been studied. The onset of sand production is estimated using the bottomhole pressure that makes the maximum effective tangential compressive stress equal or higher than the rock strength (failure criteria), which is usually known as critical bottomhole pressure (CBHP). Combining with Hydro – Mechanical model, the main objective of this work aims to develop a numerical model that can solve the complexity of the governing equations relating to sand production. The outcome of this study depicts sand production rate versus time as well as the change of porosity versus space and time. In this paper, the Geomechanical model coupled with Hydro – Mechanical model is applied to calibrate the empirical parameters.

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Development of a new type of steel structure rack apparatus for 3D geomechanical model tests and structural integrity assessment

Boundaries of Rock Mechanics ◽

10.1201/9780203883204.ch169 ◽

2008 ◽

pp. 907-911

Author(s):

Y Li ◽

H Wang ◽

W Wang ◽

W Zhu ◽

J Han ◽

...

Keyword(s):

Structural Integrity ◽

Steel Structure ◽

Model Tests ◽

Geomechanical Model ◽

Integrity Assessment ◽

3D Geomechanical Model ◽

New Type

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Protocol for a feasibility trial for improving breast feeding initiation and continuation: assets-based infant feeding help before and after birth (ABA)

BMJ Open ◽

10.1136/bmjopen-2017-019142 ◽

2018 ◽

Vol 8 (1) ◽

pp. e019142 ◽

Cited By ~ 7

Author(s):

Kate Jolly ◽

Jenny Ingram ◽

Joanne Clarke ◽

Debbie Johnson ◽

Heather Trickey ◽

...

Keyword(s):

Randomised Controlled Trial ◽

Infant Feeding ◽

Feasibility Study ◽

Breast Feeding ◽

Controlled Trial ◽

Feasibility Trial ◽

Study Results ◽

Service Staff ◽

Before And After ◽

Randomised Controlled

IntroductionBreast feeding improves the health of mothers and infants; the UK has low rates, with marked socioeconomic inequalities. While trials of peer support services have been effective in some settings, UK trials have not improved breast feeding rates. Qualitative research suggests that many women are alienated by the focus on breast feeding. We propose a change from breast feeding-focused interactions to respecting a woman’s feeding choices, inclusion of behaviour change theory and an increased intensity of contacts in the 2 weeks after birth when many women cease to breast feed. This will take place alongside an assets-based approach that focuses on the positive capability of individuals, their social networks and communities.We propose a feasibility study for a multicentre randomised controlled trial of the Assets feeding help Before and After birth (ABA) infant feeding service versus usual care.Methods and analysisA two-arm, non-blinded randomised feasibility study will be conducted in two UK localities. Women expecting their first baby will be eligible, regardless of feeding intention. The ABA infant feeding intervention will apply a proactive, assets-based, woman-centred, non-judgemental approach, delivered antenatally and postnatally tailored through face-to-face contacts, telephone and SMS texts. Outcomes will test the feasibility of delivering the intervention with recommended intensity and duration to disadvantaged women; acceptability to women, feeding helpers and professionals; and feasibility of a future randomised controlled trial (RCT), detailing recruitment rates, willingness to be randomised, follow-up rates at 3 days, 8 weeks and 6 months, and level of outcome completion. Outcomes of the proposed full trial will also be collected. Mixed methods will include qualitative interviews with women/partners, feeding helpers and health service staff; feeding helper logs; and review of audio-recorded helper–women interactions to assess intervention fidelity.Ethics and disseminationStudy results will inform the design of a larger multicentre RCT. The National Research Ethics Service Committee approved the study protocol.Trial registration numberISRCTN14760978; Pre-results.

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Coupling a 3D geomechanical model with seismic velocity to predict pressure and the full stress tensor

10.3997/2214-4609.202038011 ◽

2020 ◽

Author(s):

M. Heidari ◽

M. Nikolinakou ◽

P. Flemings

Keyword(s):

Stress Tensor ◽

Seismic Velocity ◽

Geomechanical Model ◽

3D Geomechanical Model ◽

Full Stress Tensor

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Influence of Rock Plastic Behavior on the Wellbore Stability

10.2118/206557-ms ◽

2021 ◽

Author(s):

Elena Grishko ◽

Aboozar Garavand ◽

Alexey Cheremisin

Keyword(s):

Failure Criteria ◽

Wellbore Stability ◽

Standard Approach ◽

Plastic Behavior ◽

Element Formulation ◽

Geomechanical Model ◽

Plastic Properties ◽

Plastic Deformations ◽

3D Geomechanical Model

Abstract Currently, the standard approach to building a geomechanical model for analyzing wellbore stability involves taking into account only elastic deformations. This approach has shown its inconsistency in the design and drilling of wells passing through rocks with pronounced plastic properties. Such rocks are characterized by the fact that when the loads acting on them change, they demonstrate not only elastic, but also plastic (irreversible) deformations. Plastic deformations have an additional impact on the distribution of stresses in the rock of the near-wellbore zone on a qualitative and quantitative level. Since plastic deformations are not taken into account in the standard approach, in this case the results of the wellbore stability analysis are based on incorrectly calculated stresses acting in the rock. As a result, it can lead to misinterpretation of the model for analysis, suboptimal choice of trajectory, incorrect calculation of safe mud window and an incorrectly selected set of measures to reduce the risks of instability. The aim of this work is to demonstrate the advantages of the developed 3D elasto-plastic program for calculating the wellbore stability in comparison with the standard elastic method used in petroleum geomechanics. The central core of the work is the process of initialization of the elasto-plastic model according to the data of core tests and the subsequent validation of experimental and numerical loading curves. The developed 3D program is based on a modified Drucker-Prager model and implemented in a finite element formulation. 3D geomechanical model of wellbore stability allows describing deformation processes in the near-wellbore zone and includes the developed failure criteria. The paper shows a special approach to the determination of the mud window based on well logging data and core tests by taking into account the plastic behavior of rocks. An important result of this study is the determination of the possibility of expanding the mud window when taking into account the plastic criterion of rock failure.

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