Understand the Method
See the practical factors that improve suspension in oil-based and synthetic-based drilling fluid.
Technical How-To Page
Suspension in oil-based and synthetic-based drilling fluid is improved by selecting a matching organoclay grade, activating it correctly, and dosing it to the current TDS. This page walks through fluid-system confirmation, grade selection, mixing and activation, and reading gel strength and low-shear viscosity results. Request current TDS, samples, or a grade recommendation before running a mix test.
Quick Technical Answer
This page helps buyers and formulators quickly:
See the practical factors that improve suspension in oil-based and synthetic-based drilling fluid.
Move from fluid-system confirmation to grade selection, mixing, and testing.
Connect gel strength and low-shear viscosity readings to the organoclay role.
Check common causes before changing grade or dosage.
Request TDS, SDS/MSDS, COA and samples before internal approval and purchase.
Definition
Improving suspension means building enough gel strength and low-shear structure so weighting material and drilled cuttings stay suspended instead of settling. In oil-based and synthetic-based systems, organoclay is the organophilic clay additive most commonly used for this role, because it disperses across the continuous oil phase and develops a controllable structural network.
The response depends on the organoclay grade, base oil, mud weight, temperature, and mixing energy. Suspension targets should be validated through gel-strength and sag testing, and the final grade and loading confirmed against the current TDS before field use.
Step-By-Step Procedure
Follow these steps in order. Final loading and mixing parameters should always be confirmed against the current TDS for the selected grade.
Record the base oil or synthetic fluid, mud weight, barite and cuttings loading, and target gel strength before selecting an additive.
Match an approved OD-series grade to the fluid system, for example an OBM viscosifier path for oil-based mud or a high-temperature path for HPHT wells, using the grade selection guide.
Confirm the polar activator, addition sequence, and shear energy needed so the organoclay builds a suspension-supporting structure during mixing.
Add the organoclay at the loading indicated by the current TDS, and disperse with sufficient shear and mixing time before taking initial readings.
Run standard oilfield mud testing to record 10-second and 10-minute gel strength and low-shear-rate viscosity on a viscometer.
Compare readings with the target suspension window, adjust loading or mixing energy if needed, retest, and confirm the final formulation with the current TDS and technical support before field use.
How It Works
These performance areas help procurement and technical teams decide whether to request TDS, plan a mix test, or ask for a grade recommendation.
Choosing the OD-series grade that fits the base oil and system builds predictable suspension structure.
Correct polar activator and addition sequence lets the organoclay disperse and build structure fully.
Loading within the current TDS range keeps gel strength in the intended working window.
Sufficient shear during mixing supports even dispersion and consistent readings.
Standard and high-temperature grade paths respond differently as downhole temperature rises.
Structure rebuild after shear helps solids stay suspended between circulation.
Reading Results
Run standard oilfield rheology testing and compare readings with the target window for the well design before finalizing the formulation.
| Suspension parameter | Why it matters | Organoclay role |
|---|---|---|
| Gel strength (10s / 10min) | Static suspension and sag resistance | Primary structure organoclay develops |
| Low-shear-rate viscosity (LSRV) | Solids carrying at low pump rates | Low-shear structure supported by organoclay |
| Yield point (YP) | Cuttings transport and hole cleaning | Yield structure across the oil-continuous phase |
| Barite sag / static aging | Weighting-material stability over time | Structure that reduces sag when validated in testing |
Troubleshooting
Use this table to connect a common suspension or settling problem with the likely cause and the practical check to run before changing grade or dosage.
| Suspension problem | Likely cause | Buyer check before changing |
|---|---|---|
| Barite sag in deviated wells | Grade not matched to base oil, mud weight, or angle | Check mud weight, angle, temperature, and gel readings before changing grade |
| Cuttings settling at connections | Insufficient static gel strength | Verify grade fit and activation before changing loading |
| Slow solids drop-out on standby | Structure not rebuilding after shear | Review mixing energy and addition sequence in testing |
| Low-shear viscosity too low | Under-dosage or incomplete activation | Confirm base oil compatibility and grade against current TDS |
| Suspension fades on hot wells | Standard grade used outside its temperature window | Review the high-temperature organoclay path and request current TDS |
Product Direction
Only approved OD-series grade paths are shown. Final selection should be confirmed with current TDS, sample testing, and technical review.
Primary oil-based mud suspension path for OBM buyers.
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Severe-condition grade path for HPHT suspension review.
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General organophilic clay drilling-grade category for OBM and SBM.
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Compare approved OD-series grade paths before testing a formulation.
Compare Grades
See the full suspension and anti-settling problem/solution page.
Open Solution
Manufacturer Direct Supply
HANGZHOU YONGYU CHEMICAL INDUSTRY CO., LTD. is presented in the approved project brief as a manufacturer established in 2005, with annual capacity of 25,000 tons per year. The team supports grade selection, export communication, document requests, sample evaluation, and quotation discussion for international oilfield chemical buyers.
Approved procurement facts include 25 kgs/bag packaging, MOQ of 1,000 kgs, and lead time of 7-10 working days after receiving deposit.
Technical Documents
Use these document paths to support suspension review, safety review, procurement approval, and sample testing.
Review current technical information before suspension testing, internal approval, or supplier comparison.
Download / Request SDS / MSDSSupport safety, handling, compliance, and procurement document review before ordering.
Download / Request COAAsk for COA support where available when sample or batch-level quality review is required.
Download / Request Sample RequestShare your fluid system, base oil, and suspension target for evaluation guidance.
Request SampleBuyer Questions
Suspension in oil-based and synthetic-based drilling fluid is mainly improved by selecting the right organoclay (organophilic clay) grade, activating it correctly with a polar activator, and dosing it according to the current TDS. This builds gel strength and low-shear structure that hold barite and cuttings suspended. Mixing energy, base oil type, mud weight, and temperature all affect how much structure the organoclay develops. Buyers should confirm the fluid system and target gel strength, then request a grade recommendation and TDS before running a mix test.
It depends on the fluid system, base oil, mud weight, and temperature. For general oil-based mud suspension, buyers often start with the OBM viscosifier path around OD-20 or a drilling-grade path such as OD-05; high-temperature wells point toward OD-29, and dispersion-sensitive systems may review OD-28 or OD-E29. Share your base oil, mud weight, temperature, and target gel strength so the technical team can route you to a suitable OD-series grade, then confirm with the current TDS.
Common causes include a grade that does not match the base oil, insufficient or excessive shear during mixing, an incorrect addition sequence, dosage outside the TDS range, or a temperature and mud-weight profile outside the design window. Before changing dosage, review the mixing procedure, activation conditions, and the rest of the formulation. If settling continues, share your fluid details and gel-strength readings with the technical team so the review focuses on the actual variable.
Higher downhole temperatures can reduce the structure an organoclay grade holds in a drilling fluid, which is why standard and high-temperature grades are positioned differently. For elevated or HPHT wells, review the high-temperature organoclay path and confirm the operating temperature window against the current TDS before finalizing grade selection and loading.
Request the current TDS for technical and formulation review, the SDS/MSDS for safety, handling, and compliance review, and a COA where available when batch-level quality confirmation is required. Include your fluid system, base oil, mud weight, temperature, and target gel strength so the team can route the correct document and grade recommendation for your evaluation.
Yes. Samples are available for buyer evaluation when the request includes enough technical context. Share your fluid system, base oil, mud weight, temperature, target gel strength, expected quantity, destination country, and required documents. The team can then confirm whether to start with TDS review, a mix test sample, quotation support, or a grade recommendation.
Technical Contact
Discuss base oil, mud weight, temperature condition, and gel target before selecting a grade.
Support Email SupportUse the contact path to send documents, mix-test questions, and procurement requirements.
Support RFQ SupportRequest quotation details for quantity, packaging, lead time, and export communication.
Support Product RecommendationAsk the team to route your request toward the suitable OD-series grade path.
Bottom CTA
Send your fluid system, base oil, mud weight, temperature condition, target gel strength, quantity, and document requirements. The technical team can route you to the right OD-series grade path, TDS, sample, or quotation.