EXPLORAX Oilfield Chemical Technology
GEOSPHERES HGM SERIES / LIGHTWEIGHT FLUIDS & CEMENTING
Glass Microspheres
HGS 5000

High Strength Microspheres for Oil & Gas
A grade for the first round of lightweight oilfield fluid and cement formulation studies.

MATERIAL IMAGERY

White microspheres, up close.

Illustrations show the powder appearance and hollow spherical form. These are visual concepts, not photographs or SEM measurements of an HGS 5000 production batch.

Illustrative white glass microsphere material in a glass dish

White microsphere material

Illustrative product appearance; request a production sample for inspection.

Grayscale SEM style illustration of hollow microspheres and shells

Hollow sphere structure

SEM style illustration, not an actual instrument micrograph or grade specific particle analysis.

HOLLOW GLASS MICROSPHERE GRADE

A defined starting point for formulation work.

HGS 5000 gives the technical team a defined Geospheres grade reference for screening lower-density systems. Set the target pressure window, mixing path and final fluid properties before evaluating the grade.

The selection question is practical: can the intact spheres deliver the target density after the actual mixing, pumping and pressure exposure? The answer comes from a representative test, not the grade code alone.

Hollow glass microsphere grade
Where to screen the grade

Application pathways.

01 / APPLICATION

Lightweight drilling fluid

Assess lower hydrostatic density in a weak or depleted formation pressure window.

02 / APPLICATION

Cement slurry design

Compare target slurry density with rheology, fluid loss and set-cement strength.

03 / APPLICATION

Completion fluids

Screen dispersion and retained density in the chosen base fluid.

Cementing screening data

Typical reference values.

These figures come from the supplied third-party cementing sales card. They are useful screening benchmarks, not tested Geospheres HGS 5000 specifications or batch results.

Nominal density
0.38 g/cc
Minimum fractional survival
80%
Median particle size (D50)
40 µm
Isostatic test pressure
5,500 psi

Test basis: isostatic pressure test in Nitrogen. All values are typical reference data, not for specification purposes. Confirm the offered Geospheres grade with its approved TDS, batch COA, and slurry compatibility and pressure-survival tests before job design.

Cementing benchmark comparison

Four reference test points.

The supplied sales card reports minimum fractional survival at one isostatic pressure for each reference. The red point marks HGS 5000; the other points help compare the four pages.

These are external typical screening values, not Geospheres test results. No survival curve between points is supplied. The 8000 reference in the card is designated 8000X; HGS 10000 is shown at 6,000 psi, not 10,000 psi.

Survival at specified isostatic test pressure

Cementing benchmark comparison
Questions from formulation teams

HGS 5000 FAQs.

No. Confirm pressure survival and test conditions from the approved grade-specific technical data sheet.

True particle density, D10/D50/D90 size distribution, isostatic survival and retained density after processing.

Both fluid families may be screened, but wetting, stability and compatibility must be tested with the actual recipe.

Use a controlled introduction method and measure sphere survival after the actual mixing and pump route. Avoid assuming the initial dry-powder data represents the final system.

No. The chart shows typical points from the supplied third-party cementing card, not measured Geospheres performance. Approved grade and batch data are required for product claims.

Only if post-circulation particle survival, density and fluid properties remain within the job requirements.

Evaluate HGS 5000 in your system.

Send the density target, pressure profile, base-fluid or cement recipe and mixing route for a focused discussion.

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