A 20 bar portable compressor can be a candidate for a documented drilling requirement. Its pressure label does not establish how deep a rig can drill, how quickly the hole will advance or whether the supply will remain suitable after conditions change.
For down-the-hole drilling, the enquiry should connect the compressor proposal to the identified hammer, rig and planned work. It should also explain what information is known about the hole and water conditions, what remains an assumption and who will review the air requirement if those assumptions change.
Reddy Compressors considers high-pressure portable-air enquiries subject to supplier confirmation and application review. This guide focuses on preserving a valid air-supply assessment as a drilling assignment develops.
Visit Portable Compressors for the wider equipment and service scope.
What a verified 20 bar rating establishes
A manufacturer's India product table lists the following free-air delivery points for one identified portable-compressor model:
Published working pressure | Published free air delivery |
|---|---|
17 bar | 700 CFM |
20 bar | 670 CFM |
These figures belong to the same documented model. They demonstrate that the available flow must be checked at the pressure relevant to the job. They do not establish the performance of another model or of an unidentified machine offered under a similar capacity description.
The associated manufacturer brochure confirms the corresponding 250 psi and 290 psi entries and their flow values. These pressure pairs are published approximations, not exact unit equivalences.
The reference is not a Reddy Compressors stock listing, a guarantee of site delivery or an approved match to a particular hammer. The offered unit, configuration, flow-reference conditions and applicability to the site need confirmation.
A higher pressure requirement can reopen the airflow decision
Suppose a hypothetical assessment requires 690 CFM, and an operating-condition review changes the required compressor duty from 17 bar to 20 bar. For this illustration only, assume the demand remains 690 CFM on a reconciled reference basis and at a common comparison boundary.
Using the catalogue points above:
Illustrative comparison | Numerical result |
|---|---|
700 CFM at 17 bar compared with 690 CFM demand | 10 CFM above the assumed demand |
670 CFM at 20 bar compared with 690 CFM demand | 20 CFM below the assumed demand |
The calculations are 700 − 690 = 10 and 690 − 670 = 20. The difference between the two published supply figures is 30 CFM.
This is an invented demand example, not a drilling case or an instruction to change pressure. It does not assume that real hammer demand remains constant as pressure changes. That demand must be established separately for the actual equipment and conditions.
The 10 CFM difference is not an approved reserve. The example shows why an assessment made at one pressure cannot simply be carried forward after the required duty changes. Both supply and demand need to be reconsidered.
Separate planned depth from demonstrated capability
A request such as “20 bar compressor for a deep bore” describes an intention, but leaves the equipment selection incomplete. Record the rig, hammer, bit and relevant hole dimensions, together with the planned drilling method and available site information.
Planned depth is one project input. A confirmed depth capability is a conclusion that needs an appropriate technical basis. Do not obtain that conclusion by converting the compressor's pressure label into metres of drilling.
Where a depth or completion commitment matters to the project, identify who is responsible for assessing it and what evidence supports it. The compressor provider's documented air-supply duty and the drilling contractor's installation outcome should remain distinguishable.
A previous successful hole can be useful background. It does not establish identical conditions for the next hole or eliminate the need to identify changes in the equipment and assignment.
Include water conditions in the drilling brief
A drilling-tool manufacturer's guidance identifies water influx and back pressure as relevant challenges in deep-hole DTH work. This supports asking about water conditions when preparing an enquiry; it does not establish that a 20 bar compressor resolves them.
Record the information available from the project team, such as relevant investigation records and observations from earlier work. Distinguish those records from estimates. If the conditions are unknown, make the uncertainty visible to the drilling specialist and compressor supplier.
Do not reduce the assessment to a universal pressure allowance for each metre of hole. Total hole depth, actual water conditions, equipment behaviour and the required air duty are not interchangeable descriptions.
The responsible drilling specialist should establish the implications for the selected method and equipment. No water-removal procedure, additive instruction or hammer adjustment is supplied by this page.
Define when the selection should be reviewed
A useful enquiry can specify the events that require the parties to revisit the agreed duty. These are review prompts, not operational thresholds or instructions to continue drilling.
Change or new information | Question for the responsible reviewer |
|---|---|
Water conditions differ from the planning assumption | Does the established method and air requirement still apply? |
Hammer, bit or drilling arrangement changes | Which equipment data now govern the duty? |
The assessed pressure requirement changes | What are both demand and available supply at the revised operating point? |
Further air users are connected | Is their demand included in the established total? |
The supply route or accessories change | Does the accepted delivery arrangement remain valid? |
The operating result differs from the agreed expectation | What evidence is needed to identify the cause? |
Agree who receives the information and who has authority to revise the assessment. This is particularly useful when the compressor supplier, rig owner and drilling contractor are different organisations.
Changes should be considered under the applicable site and equipment procedures. The table does not diagnose a fault or authorise a pressure increase.
Ask for observations that help the technical review
A report that drilling has slowed should describe the circumstances rather than conclude immediately that the compressor is too small. Identify the equipment in use, the stage of work, the observed change and any relevant records collected under the agreed procedure.
The technical reviewer may need pressure and flow information at defined locations, together with other drilling observations. Measurements should be obtained by competent personnel using appropriate methods. A compressor-side reading alone does not describe every condition at the hammer.
The drilling-equipment manual used as a reference for this guide stresses adequate air capacity and limiting losses between compressor and hammer. It supports reviewing the complete supply path, without proving the cause of any particular performance problem.
Keep the findings and the resulting decision together. If a different machine, arrangement or operating method is proposed, retain the reason for the change and the evidence that supports the revised requirement.
Make the offer specific about its responsibility
A useful equipment proposal identifies the compressor duty it supports and any conditions that must be confirmed before acceptance. It should also explain the included accessories, mobilisation responsibilities and support arrangements relevant to the assignment.
If the customer's drilling requirement is still being assessed, identify the unresolved input. For example, the offer may require confirmation of the hammer demand at the revised pressure or clarification of which rig functions draw from the external supply.
Avoid treating an open technical question as a minor note beneath a fixed production promise. A clear equipment offer can state what is established and what must be resolved without predicting an unsupported drilling outcome.
The complete rig demand remains important, but it is only one part of the assessment. Changing hole conditions and pressure-specific compressor output must also be considered by the responsible parties.
Information to send with a 20 bar enquiry
Provide the rig and hammer identification, the applicable air-demand documents and the pressure basis used in those documents. Include planned hole dimensions and depth, the intended method, relevant water-condition information and any known uncertainty.
Describe whether the compressor is the sole external air source or part of another proposed arrangement. Identify existing treatment and connecting equipment, the site location, required dates and expected operating periods.
Where equipment has already been assessed, send that accepted duty with the new enquiry. It gives the supplier a defined basis for considering availability or an alternative. Combining supplies or introducing a booster requires its own technical assessment; neither is assumed by this category page.
Frequently asked questions
How deep can a 20 bar compressor drill?
No universal depth follows from its pressure rating. The drilling specialist must assess the rig, hammer, hole, method and actual conditions, together with available airflow at the required pressure.
Does increasing pressure preserve the same CFM?
Do not assume it does. The reference model here lists different flow values at 17 and 20 bar. Use the actual model's data and reassess application demand at the proposed duty.
Is a 20 bar supply suitable whenever water is encountered?
That cannot be concluded from the pressure label. Water influx and back pressure are relevant to DTH equipment selection, but the response depends on the assessed conditions and applicable equipment guidance.
Can a slower drilling rate prove inadequate compressor capacity?
That observation alone does not establish the cause. Provide the operating context and relevant records so the responsible technical parties can investigate the equipment and complete arrangement.
Can these catalogue points be treated as an offer?
They illustrate a documented pressure–flow relationship. Actual supply requires confirmation of the offered unit, configuration, performance basis and commercial scope.
Discuss a 20 bar portable-compressor requirement
Reddy Compressors operates from Secunderabad/Hyderabad and has served compressor requirements since 2002. Telangana and Andhra Pradesh are priority areas, with projects elsewhere in India considered against the requirement and confirmed supply arrangements.
Send the drilling brief and available equipment documents so the enquiry can address a defined duty and identify remaining technical questions. High-pressure supply is subject to supplier confirmation.
Emergency coordination can be discussed according to availability and site circumstances. No fixed response time, drilling depth or production rate is promised.