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excess sand production in wellbore problems

  • Cavity-Like Completions in Weak Sands

    Cavity-Like Completions in Weak Sands

    Sand production is both a safety issue and expensive to prevent. The objective of the field demonstration was to show industry that CLC methods offer a more cost-effective method to produce oil and gas from friable reservoirs and prevent excess sand production. The concept of a cavity completion is to increase the effective wellbore radius and ...

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  • (PDF) SAND CONTROL IN UNCOSOLIDATED FORMATION (CASE

    (PDF) SAND CONTROL IN UNCOSOLIDATED FORMATION (CASE

    If all the sand can be carried out of the wellbore, no sand-up will occur and no sand control is required, provided that the surface facilities can handle and process the sand production.In S field, several wells, completed without sand control (gravel pack) have been continuously producing sand (0-1%) for several years without sand-up.

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  • Specialized Tools for Wellbore Debris Recovery

    Specialized Tools for Wellbore Debris Recovery

    the sand must be removed before production can commence. Other stimulation activities, such as those used in conjunction with the FRAC-N-PAC proppant exclusion system, inten-tionally place sand and synthetic proppant in the wellbore to aid production.4 In all cases, excess sand and proppant must be removed prior to producing a well.

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  • (PDF) Effect of Pressure Drawdown on Near Wellbore

    (PDF) Effect of Pressure Drawdown on Near Wellbore

    pressure may ca use excessive sand production especially in . unconsolidated sandstone ... form elastoplastic solution for the wellbore problem in strain . hardening/softening ro ck formations ...

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  • Stabilizing Wellbores in Unconsolidated Formations for

    Stabilizing Wellbores in Unconsolidated Formations for

    Various studies have verified that wellbore stabilization during drilling in unconsolidated sands can help control sand production later during production of the well. Application of the proper drilling-mud weight is required to prevent dilation and/or shear/crushing failure of formations during drilling.

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  • (PDF) Comprehensive review of water shutoff methods for

    (PDF) Comprehensive review of water shutoff methods for

    The excess water production also causes wellbore cor-rosion, scale, and sand-production problems. Due to the . chemical complexity of produced water, it requires seriously .

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  • Comprehensive review of water shutoff methods for

    Comprehensive review of water shutoff methods for

    Dec 01, 2017 Water production impacts the economic life of reservoirs and ultimate recovery. It brings up operating expenses, such as pumping costs, water/oil separation costs, and equipment costs. The excess water production also causes wellbore cor- rosion, scale, and sand-production problems.

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  • Mechanistic Models for Predicting Sand Production

    Mechanistic Models for Predicting Sand Production

    Oct 02, 2020 Sand production is a common problem in production and injector wells located in weak or poorly consolidated sandstone reservoirs. Recent clastic sediments of the Pliocene and younger Tertiary ages are particularly troublesome and sand production problem maybe expected whenever wells are completed in unconsolidated formations.

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  • Sand control - OilfieldWiki

    Sand control - OilfieldWiki

    Sand control refers to managing/minimizing sand and fine production during petroleum production.Sand and fine produced with oil and gas can cause erosion and wear of production facilities/equipments, resulting in production downtime, expensive repairs, and potentially loss of containment (serious safety risk).

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  • A Strategy for Attacking Excess Water Production | SPE

    A Strategy for Attacking Excess Water Production | SPE

    In the United States, on average, more than seven barrels of water are produced for each barrel of oil. 1 Worldwide, an average of three barrels of water are produced for each barrel of oil. 2 The annual cost of disposing of this water is estimated to be U.S. $5–10 billion and approximately $40 billion worldwide. 2 Many different causes of excess water production exist (see Table 1).

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  • Protocol for sand control screen design of production

    Protocol for sand control screen design of production

    Jan 25, 2020 However, poor sand retention could also yield massive sand production. The result can be the erosion of wellbore and surface facilities and frequent wellbore interventions. Tight sand retention (eg, by using narrow aperture) reduces sanding, but increases plugging potential, hence, lower wellbore productivity.

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  • Geomechanical and Numerical Studies of Casing Damages

    Geomechanical and Numerical Studies of Casing Damages

    Casings damage is a usually reported incident during production in many fields. This incident is conventionally induced by compressional, tensional, burst or collapse forces applied to the casing string. Excessive anisotropic and non-uniform stresses, causing shear failure in unconsolidated reservoirs, are one of the main reasons reported for the casing failure.

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  • A wellbore model for field-scale modeling of asphaltene

    A wellbore model for field-scale modeling of asphaltene

    May 01, 2000 Geilikman and Dusseault (1997) addressed the modeling problem involving sand production. They coupled the sand production problem with the fluid flow equation in order to demonstrate the possible benefits of producing with unrestricted sand production. They focused on the geomechanics aspect of the wellbore modeling and did not include wellbore ...

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  • Introduction - A Strategy for Attacking Excess Water

    Introduction - A Strategy for Attacking Excess Water

    Examples include Portland cement, mechanical tubing patches, bridge plugs, straddle packers, and wellbore sand plugs. Logically, identification of the excess water production problem should be performed before attempting a water shutoff treatment. Unfortunately, many (perhaps most) oil and gas producers do not properly diagnose their water ...

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  • A Strategy for Attacking Excess Water Production

    A Strategy for Attacking Excess Water Production

    solving excess-water-production problems. The strategy advocates ... and function in or very near the wellbore. Examples include Portland cement, mechanical tubing patches, bridge plugs, straddle packers, and wellbore sand plugs. A few comments may be helpful to clarify some of the listings in Table 1. First, the difference between Problems 1 ...

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  • A STRATEGY FOR ATTACKING EXCESS WATER

    A STRATEGY FOR ATTACKING EXCESS WATER

    Cement, sand plugs, calcium carbonate. ... Does the problem occur right at the wellbore (like casing leaks or flow behind pipe) or does it occur out ... Excess Water Production Problems and Treatment Categories (Categories are listed in increasing order of treatment difficulty) Category A: “Conventional” Treatments Normally Are an Effective ...

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  • Improving downhole pump efciency and well

    Improving downhole pump efciency and well

    Sand production Causes Sand production is a common problem particularly in shallow, unconsolidated reservoirs. The increased stresses due to fluid flow towards the production well and the pore pressure changes can exceed formation strength and initiate sand production (Penberthy and Shaughnessy 1992). The sand production increases with ...

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  • Sand Control - Maximising Production And Cutting Out

    Sand Control - Maximising Production And Cutting Out

    The packing creates a permeable filter that allows for the production of formation fluids but limits entry and production of formation sand in the wellbore. Gravel packs have been used in subsea wells since the 1930s and allow for high productivity with a low drawdown pressure.

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  • SAND CONTROL USING GEOMECHANICAL

    SAND CONTROL USING GEOMECHANICAL

    Sand production is one of the oldest problems of oil field. It is usually associated with shallow formations as compaction tends to increase with depth. But in some areas, sand production may be encountered to a depth of 12,000ft or more. Sand production higher than 0.1% (volumetric) can usually be

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  • Lecture 11 Ch. 10 Wellbore Stability (11, 13 May 2020)

    Lecture 11 Ch. 10 Wellbore Stability (11, 13 May 2020)

    • Wellbore stability problems – Mechanical failure – Hole cleaning – Wellbore hydraulics – Drilling equipment • Problems – Borehole instability can cause 5-10% of drilling cost (Fjaer et al., 2008). ~ billions $ – Demand ↑ for more sophisticated well trajectories –highly deviated, horizontal, deep wells.

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  • Sand Control Selection for Wells in Tukau Field

    Sand Control Selection for Wells in Tukau Field

    sand production are it can plug up upstream and downstream equipment such as completion tubing, tubing manifold, separator, pipeline and also access to enter wellbore. Excessive sand production in oil and gas industry may require production shut in. Sand production is not an exact science although theoretical analytical and numerical model exist.

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  • The Efficient Use of Surface Choke to Optimize Oil

    The Efficient Use of Surface Choke to Optimize Oil

    between the producing formation or formations and the wellbore of the well can induce sand to flow into the wellbore. Apart from excessive sand production, producing a well at a flow rate too great can also result to the following effects: Gas and/or water coning, Formation Damages, Tubing or casing collapse, etc. In order to take

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  • A priori assessment of longterm productivity of frac

    A priori assessment of longterm productivity of frac

    common inter-related problems of sand production, wellbore stability, and low well productivity that hindered the continu-ation of gas production from offshore gas hydrate deposits10 and China.11 The production drawdown required to achieve commercial gas production rates caused wellbore collapse and excessive sand production.

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  • New technology offers sand control option | Offshore

    New technology offers sand control option | Offshore

    This restricted flow creates an additional pressure drop, balancing the wellbore pressure drop. The resultant evenly distributed flow profile can reduce water or gas coning and sand production, and solve other drawdown-related production problems.

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  • Erosion of material (sand production) in an oil wellbore

    Erosion of material (sand production) in an oil wellbore

    Excessive sand production is, therefore, undesirable and will limit oil recovery rates. A typical measure of these limits on recovery rates is the so-called “sandfree rate.” A sandfree rate might be based on direct damage caused by sand production or might be based on the cost of sand management systems that limit the damage of the sand.

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  • Sand Production - an overview | ScienceDirect Topics

    Sand Production - an overview | ScienceDirect Topics

    Jon Jincai Zhang, in Applied Petroleum Geomechanics, 2019. Abstract. Sand production prediction can help identify the most economical way of sand control methods with the desired production rate. This chapter examines some methods to model perforation failures for sanding prediction. Wellbore geometry, reservoir properties, depletion, and drawdown are addressed to analyze sand production, with ...

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  • PCP systems for high sand cut wells - PetroWiki

    PCP systems for high sand cut wells - PetroWiki

    Jan 18, 2016 Sand and other solids production can cause problems in PCP systems by accelerating equipment wear, increasing rod torque and power demand, or causing a flow restriction by accumulating around the pump intake, within the pump cavities, or above the pump in the tubing. Also, given its specific gravity of ≈ 2.7, even moderate volumes of sand can substantially increase the pressure gradient of ...

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  • 1.1.21 Erosion of material (sand production) from oil bore

    1.1.21 Erosion of material (sand production) from oil bore

    Excessive sand production is, therefore, undesirable and will limit oil recovery rates. A typical measure of these limits on recovery rates is the so-called “sandfree rate.” A sandfree rate might be based on direct damage caused by sand production or might be based on the cost of sand management systems that limit the damage of the sand.

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  • Predicting sand production - PetroWiki

    Predicting sand production - PetroWiki

    Jul 16, 2015 This obviously will solve the sand production problem but will also increase costs and may reduce well productivity. If sand control was actually unnecessary, the implementation of sand-control completions was a bad economic decision. ... associated with fluid flow in the immediate region around the wellbore, is simultaneously computed with ...

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  • The Value of Multidisciplinary Data in Resolving Oil Well

    The Value of Multidisciplinary Data in Resolving Oil Well

    Apr 07, 2020 The problem grows more complicated, as not all sand production is inherently problematic, and there are times when sand production on a continuous level is necessary. On the other hand, analysts must also know when to address excess sand production. This issue can be resolved with the proper sand control strategies.

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  • A segmenting method of long horizontal wellbore for staged

    A segmenting method of long horizontal wellbore for staged

    Jan 01, 2019 For horizontal well, the uniform measure of completion for sand control in the whole horizontal wellbore will cause local sand control failure or excessive sand control, even a decrease in production. An effective measure solved the problem is to segment long horizontal wellbore and conduct completion with staged sand control.

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