OILFIELD HYDROSTATIC PRESSURE TESTING
Hydrostatic Pressure Testing to 15,000 PSI for Drilling & Completion Equipment
Field pressure testing on BOPs, annulars, kellys, casing, frac trees, flowback equipment, manifolds, sales lines, and lubricators — using a Gardner Denver T-300, run by an API Spec Q1 certified contractor based in Rock Springs, Wyoming.
Oilfield and industrial equipment only. We do not test SCBA bottles, scuba tanks, propane cylinders, fire extinguishers, or residential plumbing.

Testing to 15,000 PSI · Gardner Denver T-300

API Spec Q1, 10th Edition Certified — Reg. No. Q1-3257

25+ Years of Oilfield & Industrial Field Experience

Certified & Inspected Equipment
PRESSURE INTEGRITY & VERIFICATION
Hydrostatic Pressure Testing & Hydrotesting for Oilfield Equipment
Hydrostatic testing and hydrotesting are the same thing – a hydrotest fills equipment with water, pressures it above its working pressure, and holds it to confirm the assembly will not leak or fail in service. Water is used rather than gas because it barely compresses, which means a failure releases very little stored energy — the reason hydrostatic testing is the accepted method for verifying pressure-containing equipment before it goes to work.
H&N performs hydrostatic pressure testing in the field using a Gardner Denver T-300, with testing capability up to 15,000 PSI. Tests are run on drilling and completion equipment at wellsites, yards, and facilities across Wyoming.
DRILLING • COMPLETION • PRODUCTION EQUIPMENT
Equipment We Pressure Test
Drilling Equipment
- BOPs (blowout preventers) — stack and shell testing
- Annulars
- Kellys
- Casing
- Drilling manifolds and choke manifolds
Completion & Production Equipment
- Frac trees and frac stacks
- Flowback equipment
- Manifolds, including zipper manifolds
- Sales lines
- Lubricators
- Wellheads and valves
Also Tested
- Frac iron and treating iron
- High-pressure piping and flowlines
- Kellys
- Casing
- Drilling manifolds and choke manifolds
TESTING CAPABILITY & EQUIPMENT
Testing Equipment & Documentation
- Gardner Denver T-300 high-pressure test pump
- Testing up to 15,000 PSI
- API Spec Q1, 10th Edition certified — Registration No. Q1-3257, a documented and audited quality management system
- Certified and inspected equipment
Quote Request Form
Tell Us About the Job
Tell us the equipment, the test pressure required, and where and when. The more you can give us, the more precise the quote.
What to Include in Your Request
| Tell us | Why it matters |
|---|---|
| Equipment to be tested | BOP, frac tree, manifold, casing, lubricator, sales line, or something else. |
| Test pressure required | The working and test pressures, and whether it falls within the 15,000 PSI capability. |
| Standard or procedure | API Std 53, ASME code, an operator-specific procedure, or customer specification. |
| Documentation needed | Chart recording, digital record, signed test report — say what has to be handed over. |
| Location | Wellsite, yard, or facility, plus city, county, or basin. |
| Timing | As soon as possible, within 7 days, within 30 days, or planning ahead. |
| Water and access | Whether water is available on location, and whether the site is accessible to a loaded truck. |
PRESSURE-TESTING EXPERIENCE & CAPABILITY
Why Operators Use H&N for Pressure Testing
API Spec Q1 Certified
Registration No. Q1-3257 under API Spec Q1, 10th Edition. An audited quality management system, which matters more in pressure testing than in almost any other service line, because the value of a test is the credibility of its record.
15,000 PSI Capability
Gardner Denver T-300, covering the pressure range that drilling and completion equipment in this basin actually requires.
Field Testing, Not Shop-Only
Testing performed at the wellsite, in the yard, or at the facility, so equipment does not have to travel to be verified.
One Contractor Across the Location
Pressure testing alongside frac-iron support, valve maintenance, BOP lift systems and torque tools, hydrovac, and 15-ton boom truck services.
ROCK SPRINGS • WYOMING • ROCKY MOUNTAIN BASINS
Service Area
H&N works from Rock Springs, Wyoming, across the Green River, Uinta, Powder River, and Big Horn basins — including Sweetwater, Sublette, Lincoln, Uinta, Campbell, Converse, and Big Horn counties — and supports Denver-headquartered operators with Wyoming assets. Send the location and we will confirm availability.
Frequently asked questions
Hydrostatic testing - also called hydrotesting - fills a pressure-containing component with water, raises the pressure above its normal working pressure, and holds it for a set period to confirm there is no leak, deformation, or failure. Water is used instead of air or gas because liquid is nearly incompressible, so a failure during the test releases very little energy. It is the standard verification method for BOPs, frac trees, manifolds, casing, piping, and vessels before they go into service.
Up to 15,000 PSI, using a Gardner Denver T-300 high-pressure test pump. Tell us the required test pressure when you send the request and we will confirm the job is within range.
Drilling equipment including BOPs, annulars, kellys, and casing; and completion equipment including frac trees, flowback equipment, manifolds, sales lines, and lubricators. If your equipment is not on that list, send the details and we will tell you whether it is within our scope.
Yes. BOPs and annulars are among the primary items H&N pressure tests. Tell us the stack configuration, the required test pressures, and the standard or operator procedure the test has to follow.
Pricing depends on the equipment, the test pressure, how many items are being tested, the distance from our Rock Springs base, the documentation required, and whether the work is scheduled or a call-out. Send those details and we will quote the actual job rather than a rate that changes once we arrive.
No. H&N performs hydrostatic testing on oilfield and industrial equipment — BOPs, frac trees, manifolds, casing, piping, and similar pressure-containing systems. We do not test compressed gas cylinders, SCBA or scuba bottles, propane tanks, fire extinguishers, or residential plumbing. A DOT-certified cylinder retester is the right call for those.