Sand Production Prediction of Gas Field - Methodology and Field Application

Abstract: Usually we pay more attention on how to improve gas well cementing quality in engineering design and field operations, and there are so many studies on cement agents but few researches on cement slurry injection technology. The field practice proved that conventional cementing technology can not ensure the cementing quality especially in gas well and some abnormal pressure wells. Most of the study is concentrated on cement agents and some cementing aspects such as wellbore condition, casing centralization etc. All the factors analysis on cementing quality has pointed out that a combination of good agents and suitable measurements can improve cementing quality effectively. The essential factor in cementing is to enhance the displacement efficiency, but normal hole condition and casing centralization are the fundamental for cementing only. Pulsing cementing is the technology that it can improve the displacement efficiency especially in reservoir well interval, also it can shorten the period from initial to ultimate setting time for cement slurry or improve thickening characteristics, and then to inhibit the potential gas or water channeling. Based on systematically research, aiming at improving in 7″ liner cementing, where there are multi gas reservoirs in long interval in SiChuan special gas field, well was completed with upper 7″ liner and down lower 5″ liner, poor cementing bonding before this time. So we stressed on the study of a downhole low frequency self-excited hydraulic oscillation pulsing cementing drillable device and its application, its successful field utilization proved that it is an innovative tool, and it can improve cementing quality obviously.

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Investigation of sand production prediction shortcomings in terms of numerical uncertainties and experimental simplifications

Journal of Petroleum Science and Engineering ◽

10.1016/j.petrol.2021.109147 ◽

2021 ◽

pp. 109147

Author(s):

Mohammad Hossein Shahsavari ◽

Ehsan Khamehchi ◽

Vahidoddin Fattahpour ◽

Hamed Molladavoodi

Keyword(s):

Sand Production ◽

Production Prediction

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Calibration of Sand Production Prediction Models at Early Field Life in the Absence of Field Sanding Data

10.2118/191978-ms ◽

2018 ◽

Author(s):

Ahmadreza Younessi ◽

Feng Gui ◽

Sadegh Asadi ◽

Abbas Khaksar

Keyword(s):

Prediction Models ◽

Sand Production ◽

Production Prediction

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Realistic Sand-Production Prediction: Numerical Approach

SPE Production Engineering ◽

10.2118/16989-pa ◽

1989 ◽

Vol 4 (01) ◽

pp. 15-24 ◽

Cited By ~ 39

Author(s):

N. Morita ◽

D.L. Whitfill ◽

I. Massie ◽

T.W. Knudsen

Keyword(s):

Numerical Approach ◽

Sand Production ◽

Production Prediction

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A geomechanical approach for sanding risk assessment applied to three field cases for completion optimisation

The APPEA Journal ◽

10.1071/aj09040 ◽

2010 ◽

Vol 50 (1) ◽

pp. 623 ◽

Cited By ~ 1

Author(s):

Khalil Rahman ◽

Abbas Khaksar ◽

Toby Kayes

Keyword(s):

Decision Making ◽

Petroleum Industry ◽

Cost Effective ◽

Development Planning ◽

Control Measures ◽

Sand Production ◽

Field Development ◽

Well Completion ◽

Sand Control ◽

Production Prediction

Mitigation of sand production is increasingly becoming an important and challenging issue in the petroleum industry. This is because the increasing demand for oil and gas resources is forcing the industry to expand its production operations in more challenging unconsolidated reservoir rocks and depleted sandstones with more complex well completion architecture. A sand production prediction study is now often an integral part of an overall field development planning study to see if and when sand production will be an issue over the life of the field. The appropriate type of sand control measures and a cost-effective sand management strategy are adopted for the field depending on timing and the severity of predicted sand production. This paper presents a geomechanical modelling approach that integrates production or flow tests history with information from drilling data, well logs and rock mechanics tests. The approach has been applied to three fields in the Australasia region, all with different geological settings. The studies resulted in recommendations for three different well completion and sand control approaches. This highlights that there is no unique solution for sand production problems, and that a robust geomechanical model is capable of finding a field-specific solution considering in-situ stresses, rock strength, well trajectory, reservoir depletion, drawdown and perforation strategy. The approach results in cost-effective decision making for appropriate well/perforation trajectory, completion type (e.g. cased hole, openhole or liner completion), drawdown control or delayed sand control installation. This type of timely decision making often turns what may be perceived as an economically marginal field development scenario into a profitable project. This paper presents three case studies to provide well engineers with guidelines to understanding the principles and overall workflow involved in sand production prediction and minimisation of sand production risk by optimising completion type.

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Implications of accurate geomechanical modelling and systematic core testing for sanding evaluation and sand control decisions – a case study from Perth Basin

The APPEA Journal ◽

10.1071/aj19172 ◽

2020 ◽

Vol 60 (1) ◽

pp. 267

Author(s):

Sadegh Asadi ◽

Abbas Khaksar ◽

Mark Fabian ◽

Roger Xiang ◽

David N. Dewhurst ◽

...

Keyword(s):

Management Strategies ◽

Mechanical Tests ◽

Well Test ◽

Sand Production ◽

Gas Field ◽

Stress Regime ◽

Full Field ◽

Field Development ◽

Sand Control ◽

Rock Mechanical Properties

Accurate knowledge of in-situ stresses and rock mechanical properties are required for a reliable sanding risk evaluation. This paper shows an example, from the Waitsia Gas Field in the northern Perth Basin, where a robust well centric geomechanical model is calibrated with field data and laboratory rock mechanical tests. The analysis revealed subtle variations from the regional stress regime for the target reservoir with significant implications for sanding tendency and sand management strategies. An initial evaluation using a non-calibrated stress model indicated low sanding risks under both initial and depleted pressure conditions. However, the revised sanding evaluation calibrated with well test observations indicated considerable sanding risk after 500 psi of pressure depletion. The sanding rate is expected to increase with further depletion, requiring well intervention for existing producers and active sand control for newly drilled wells that are cased and perforated. This analysis indicated negligible field life sanding risk for vertical and low-angle wells if completed open hole. The results are used for sand management in existing wells and completion decisions for future wells. A combination of passive surface handling and downhole sand control methods are considered on a well-by-well basis. Existing producers are currently monitored for sand production using acoustic detectors. For full field development, sand catchers will also be installed as required to ensure sand production is quantified and managed.

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