A New Method for Sand Control and Well Stimulation in Unconsolidated Dirty Sands

Aslesen, K.S.; Short, Charles John; Terwilliger, P.L.

doi:10.2118/10172-ms

Cited by 6 publications

(1 citation statement)

References 6 publications

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“…When shallower layers have to be produced through selective completion in short strings: i) selective gravel pack completion can not be installed in short string if casing is smaller than 9 5/8 " OD; ii) no more than one selective gravel pack completion in short string can be installed. Plastic consolidation techniques [12][13][14] often reduce the permeability of the consolidated regions, moreover the resins are difficult to inject into the formation because of their high viscosity.…”

Section: Introductionmentioning

confidence: 99%

Dirty Sand Consolidation Technology for Gas Wells

Cobianco¹,

Lezzi²,

Massara³

et al. 1999

Proceedings of SPE International Symposium on Oilfield Chemistry

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TX 75083-3836, U.S.A., fax 01-972-952-9435. AbstractItalian gas fields are usually composed of many sand layers, which must be produced separately: therefore, multiple completions are very common in Italy. Shallower layers, the most prone to produce sand, are completed with sand control techniques: open hole gravel pack and inside casing gravel pack installed above fracturing pressure (frac pack) 1-3 are the most popular completions. Sometimes shallower layers can not be completed in sand control just because the uppermost selective gravel pack on short string was installed in a deeper, more prolific, sand layers. Conventional completion (without sand control) is the only possible technique applicable in these layers.Formation sand can not be consolidated with standard chemical treatments (e.g. resins) because of the high clay content (25-50%) and the low permeability (10-200 mD). The use of frac pack with resin coated proppant is not allowed by the thin thickness of sand layers where the fracture can extend toward close water layers. A novel sand consolidation technique especially suited for prevention of dirty sand influx in gas wells has been developed. Laboratory testing of the new sand-control system gives a minimum 70 -80% permeability retention and the resulting compressive strength is sufficient for an effective sand control. The cementing materials, as shown by SEM (Scanning Electron Microscopy), can be described in terms of precipitation of amorphous silica and migration of clays.This paper reports the laboratory testing and results: the novel system is able to consolidate very low dirty permeable sands (< 1 mD) containing high concentration of clays (up to 50%) and carbonate materials (up to 20%) This technology has been employed in field trials with positive results.

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Section: Introductionmentioning

confidence: 99%

Dirty Sand Consolidation Technology for Gas Wells

Cobianco¹,

Lezzi²,

Massara³

et al. 1999

Proceedings of SPE International Symposium on Oilfield Chemistry

View full text Add to dashboard Cite

show abstract

7. Bibliography

1989

Developments in Petroleum Science

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Review of Recent Advances in Chemical Sand Production Control: Materials, Methods, Mechanisms, and Future Perspectives

Du,

Huang,

Liu

et al. 2024

Energy Fuels

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Chemical sand control is widely used due to its durability and cost-effectiveness. Injecting polymers or nanoparticles into the reservoir can enhance its stability and prevent sand production. This account introduces and discusses the latest developments in chemical sand production control, including materials, methods, mechanisms, and characterization of sand production control. First, the properties of polymers, nanoparticles, and nanocomposites used in chemical sand production control are summarized, and resin viscosity reduction methods are introduced. Second, the sand production mechanisms of different reservoirs are introduced. Third, different chemical sand production control methods are discussed and core testing and characterization methods are introduced. Finally, gaps and challenges in chemical sand production control are presented, and possible future directions for chemical sand production control are discussed. The review provides a good reference for researchers in chemical sand production control.

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A New Method for Sand Control and Well Stimulation in Unconsolidated Dirty Sands

Cited by 6 publications

References 6 publications

Dirty Sand Consolidation Technology for Gas Wells

Dirty Sand Consolidation Technology for Gas Wells

7. Bibliography

Review of Recent Advances in Chemical Sand Production Control: Materials, Methods, Mechanisms, and Future Perspectives

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