A New Concept of Chemical Sand Consolidation: From Idea and Laboratory 
Qualification to Field Application

Kotlar, Hans Kristian; Haavind, Frode; Springer, Martin; Bekkelund, Sissel Solberg; Torsæter, Ole

doi:10.2523/95723-ms

Cited by 8 publications

(4 citation statements)

References 17 publications

(18 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…CSC technology has been successfully used since the mid-40 (Kotlar et al 2005, and reference there in) and, because of its cost, it has been in and out of use, depending on oil prices. Its principle is the adhesion of the sand grains through a liquid resin that precipitated on the porous matrix, while the crosslinking occurs to form a rigid material.…”

Section: Overview Of Chemical Sand Consolidation (Csc) Technologymentioning

confidence: 99%

“…Its use also leads to increased consolidated system resistance to chemical attack and degradation (Harrisberger et al 1971). In particular, organosilanes coupling agents family have been applied alone (Kotlar et al 2005, Kotlar et al 2006) and mixed with resins (Walther et al 1966;Spain 1967;Nguyen 2007).…”

Section: Overview Of Chemical Sand Consolidation (Csc) Technologymentioning

confidence: 99%

See 1 more Smart Citation

Application of Concentric Coiled-Tubing and Well-Vacuuming Tool With Chemical Sand-Consolidation Resins for Controlling Sand Production in Wells With Damaged Screens or Slotted Liners: A Rigless Well-Repair Alternative

Medina

Diaz²,

Pachon³

2010

SPE Latin American and Caribbean Petroleum Engineering Conference

View full text Add to dashboard Cite

Reservoirs comprised of poorly consolidated sands are generally prone to some level of sand production throughout the life of the well. This sand production creates many challenging problems for the operator such as erosion and/or failure of both down-hole and surface equipment, lower well production due to tubular fill-up and, finally, environmental issues related to the final disposition of the produced solids. All of these problems also have a common denominator: they significantly increase the cost of production for the well's in question.Conventionally, the application of any technique for controlling sand production is recommended as soon as it is known that the problem exists. Among some of the solutions available are 1) sand control by mechanical means using slotted liners and screens combined with conventional gravel packs, 2) prepacked completion screens, 3) lowering the production of the well thereby reducing the draw-down across the formation and 4) chemical sand consolidation (CSC) resin treatments: the latter being the focus of this paper.The principle behind the CSC process is the adherence of sand grains to a liquid resin that, while cross-linking occurs, penetrates and hardens across the porous matrix. The newly create mass of consolidated sand exhibits much higher mechanical strength, able to withstand the drag forces generated by oil production.CSC resins can be injected either when a well is initially completed or during workover operations which are needed to clean a sanded-up well-bore where said sand deposition is the result of failed completion screens or slotted tubulars. In such cases, the CSC resin acts as a plug across the heightened sand producing area and represents an economically viable alternative to complete replacement of the damaged tubulars or, as a worse-case scenario, well replacement. This paper will discuss a combination of technologies where both CCTWV (used to clean the well and detect the sand intrusion points) along with CSC resin technologies were used to successfully repair two wells in the unconsolidated URD-01 reservoir that were producing sand through holes in 5" Slotted Liner and 3-½". pre-packed completion screens.

show abstract

Section: Overview Of Chemical Sand Consolidation (Csc) Technologymentioning

confidence: 99%

Section: Overview Of Chemical Sand Consolidation (Csc) Technologymentioning

confidence: 99%

Application of Concentric Coiled-Tubing and Well-Vacuuming Tool With Chemical Sand-Consolidation Resins for Controlling Sand Production in Wells With Damaged Screens or Slotted Liners: A Rigless Well-Repair Alternative

Medina

Diaz²,

Pachon³

2010

SPE Latin American and Caribbean Petroleum Engineering Conference

View full text Add to dashboard Cite

show abstract

“…However, these approaches could also be used to assist in petroleum reservoir investigations, such as to monitor reservoir stimulation or well-bore completion procedures. For example, a new chemical injection treatment has recently been developed to increase sand consolidation and cementation in the near vicinity of the borehole, thereby significantly decreasing sand production (Kotlar et al 2005), and injection of bacterial suspensions following water flooding has been explored as a technique to enhance oil recovery, which has been shown to increase the recovery factor by 3-5% (Crecente et al 2005). In these cases, time-lapse 3D VSP surveys, where waves excited by sources on the earth's surface are recorded by sensors in a borehole, could likely provide valuable information about the spatial distribution of the treated zones, and the the quality and distribution of the cementation.…”

Section: Challenges and Future Directions In Monitoring Biogeochemicamentioning

confidence: 99%

Advanced Noninvasive Geophysical Monitoring Techniques

Snieder¹,

Hubbard²,

Haney³

et al. 2007

Annu. Rev. Earth Planet. Sci.

View full text Add to dashboard Cite

Geophysical methods can be used to create images of the Earth's interior that constitute snapshots at the moment of data acquisition. In many applications, it is important to measure the temporal change in the subsurface, because the change is associated with deformation, fluid flow, temperature changes, or changes in material properties. We present an overview how noninvasive geophysical methods can be used for this purpose. We focus on monitoring mechanical properties, fluid transport, and biogeochemical processes, and present case studies that illustrate the use of geophysical method for detecting timelapse changes in associated properties. The examples include: measuring uplift of the Earth's surface, compaction near a producing hydrocarbon reservoir, the seismic detection of stress changes, monitoring buildings, the detection of fluid flow along a fault zone, electrical monitoring of fluid infiltration and redox potential, and electrical and seismic monitoring of microbially mediated processes. An overlying research question in geophysical monitoring concerns the use of these time-lapse changes, notably the assesment of uncertainty, the combination of disparate data, and the interface with those who make decisions based on time-lapse information.

show abstract

“…Among them it is worth to mention systems based on organosilane chemistry (Kotlar et al 2005;Haavind et al 2008). Among them it is worth to mention systems based on organosilane chemistry (Kotlar et al 2005;Haavind et al 2008).…”

Section: Introductionmentioning

confidence: 99%

Tailored Nanomaterials for E&P

Genolet¹,

Schmidt²,

Schmidt³

2009

All Days

View full text Add to dashboard Cite

A new nano-material based binder technology has been developed for the improvement of sand consolidation and proppant flow back. The material represents a sol-gel derived nano-composite, the properties of which are defined by the organic as well as by the inorganic components of the composite system. Using this approach, the material was prepared with viscosities tailored between a few to some tens of centipoises for the injection into very low as well as high Darcy formations. For permeability retention, post flushing procedures have been developed, using nitrogen as well as brine or oil. The downhole consolidation process of the binder material is performed by a chemically cross-linking of the organic groups through radical polymerisation. The time period up to the beginning of the curing process of the binder (pumping time) was established by the appropriate choice of the thermal initiator characteristics and its concentration ("curing on command"). The inorganic backbone of the binder material (silicates, reinforced by titania or zirconia, incorporated into the back bone on a molecular level), pre-formed during the synthesis process and accomplished downhole, leads to a very high long term chemical resistance against crude oils and brines, even at high temperatures. The system was tested in a displacement cell at temperatures up to 200 °F and up to 3700 psi. Permeability retention, also in low Darcy formations, was determined to be above 80% after flushing. The strength of the consolidated material depends on the particle size of the treated sand. Using uniaxial compressive strength (UCS) test equipment, the compressive strength was measured up to 1500 psi with fine sands, and 450 psi with coarse sands or proppants. The shelf life time of the system was found to be more than six months as employment testing period, for a thermal initiator-free system. The thermal initiator has to be added just before pumping. For placing the treatment, bull heading as well as coiled tubing can be used. The system has been proved to be a versatile technology, adaptable to different downhole conditions in oil and gas wells.

show abstract

A New Concept of Chemical Sand Consolidation: From Idea and Laboratory Qualification to Field Application

Cited by 8 publications

References 17 publications

Application of Concentric Coiled-Tubing and Well-Vacuuming Tool With Chemical Sand-Consolidation Resins for Controlling Sand Production in Wells With Damaged Screens or Slotted Liners: A Rigless Well-Repair Alternative

Application of Concentric Coiled-Tubing and Well-Vacuuming Tool With Chemical Sand-Consolidation Resins for Controlling Sand Production in Wells With Damaged Screens or Slotted Liners: A Rigless Well-Repair Alternative

Advanced Noninvasive Geophysical Monitoring Techniques

Tailored Nanomaterials for E&P

Contact Info

Product

Resources

About