Engineering Services

Analysis & Design Expertise
for the Oil & Gas Industry

Six integrated engineering disciplines — from initial acoustical design through on-site field verification. Each service stands alone or combines into a complete project solution.

Typical Project Workflow
01

Project Intake

P&ID review, equipment specs, gas data

02

Acoustical Model

Pulsation simulation, bottle sizing, force output

03

Structural FEA

Piping, skid and vessel dynamic analysis

04

Design Report

Recommendations, drawings, code compliance

05

Field Verify

Optional on-site validation via TTI Field Eng.

SVC-01 / Acoustical Analysis

Pulsation under control — before the unit ships.

Our acoustical analysis services optimize the performance of reciprocating compressor and pump systems to minimize pulsation effects and maximize performance while adhering to industry limits of vibration, pressure drop and horsepower loss.

Tech Transfer has extensive experience conducting acoustical pulsation analysis on reciprocating gas compressors and liquid pumps. Analysis techniques have been developed over the last 35 years that help ensure our computer analysis results closely match recorded field data.

Tech Transfer's success rate with pulsation analysis is unparalleled in the reciprocating compressor industry — originally developed to support field vibration analysis of compressors, today we are a world leader in pulsation and vibration analysis. We perform analyses in complete compliance with API 618 and all its options for stress and dynamic analysis.

API 618 Pulsation Analysis — Deliverables
  • Digital modeling of system
  • Dynamic pulsation simulation
  • Evaluation of pulsations and shaking forces per API 618
  • Pressure drop calculations
  • Corrective recommendations
API 618 DA1 API 618 DA2 API 618 DA3 API 674 API 688
Download Acoustical Analysis Request Form

Fill out and email to: sales@techtran-hou.com

Video — Acoustical Pulsation Analysis Overview
Fig. SVC-01 — Pulsation Spectrum vs. API 618 Limit · Illustrative
SVC-02 / Piping Stress & Dynamic Analysis

Piping that won't crack — or shake itself loose.

Our piping analysis services help users control the vibration energy associated with rotating equipment piping systems to eliminate fatigue failures, downtime and repairs. We offer both on-skid and facility piping systems analysis.

Tech Transfer has extensive experience in performing piping studies for reciprocating compressor, rotating equipment, and process industry applications. Our studies are performed in accordance with applicable industry standards for both dynamic (API 618) and stress analysis (ASME B31.3, B31.8, and others).

Tech Transfer's modeling techniques reflect the continuous improvement that results from remedial field work. Our support designs ensure predicted vibrations are adequately controlled and pipe stresses fall under applicable piping code allowable stress.

Applicable Codes
  • API 618 — Reciprocating Compressors
  • API 674 — Reciprocating Pumps (Piping MNF & Forced Response)
  • API 619 — Screw Compressors
  • API 617 — Centrifugal Compressors
  • API 661 — Air Cooled Heat Exchangers
  • API 610 — Centrifugal Pumps
  • ASME B31.3 — Process Piping
  • ASME B31.8 — Gas Transmission & Distribution
  • ASME Section VIII Div. 1 & 2 — Vessel Nozzle Load Analysis
API 618 API 674 API 619 API 617 ASME B31.3 ASME B31.8
Download Piping Analysis Presentation
Piping analysis — CAD to results
Fig. SVC-02 — CAD to Results to Solution · Piping Dynamic Analysis
Video — Piping Stress & Dynamic Analysis
SVC-03 / Skid Analysis

The structure beneath everything — engineered to hold.

Along with vessel dynamic analysis, our skid analysis services are aimed at optimizing the design and installation of rotating equipment to improve reliability and control the effects of vibration energy that leads to fatigue failures, downtime and repairs.

Tech Transfer has the capability to perform stress and dynamic analysis for reciprocating package skids of all sizes. We have extensive experience analyzing wind, seismic, transportation and lift conditions, as well as natural frequency analysis and simulation of operating vibration levels.

Tech Transfer performs stress analysis on lifting lug designs per AISC and RP2A and provides recommendations if required, including predicted sling loads and support reaction values. We have experience analyzing FPSO compressor modules and offshore platform decks — including the ship/platform deck in the dynamic model for accuracy.

Tech Transfer has developed FEA models and modeling techniques to match field vibration results. The major equipment, skid and pedestal are modeled using 3-dimensional shell elements to achieve the highest level of accuracy, including inertial unbalanced forces, crosshead forces and cylinder gas forces based on compressor performance.

FEA · 3D Shell Elements AISC API RP2A ASCE 7 FPSO · Offshore
Skid FEA model
Fig. SVC-03 — Skid FEA Model · 3D Shell Element Analysis
Skid analysis results
Fig. SVC-03b — Stress Distribution & Mode Shape Results
SVC-04 / Vessel Dynamic Analysis

Modal analysis to keep bottles out of resonance.

Our vessel dynamic analysis services evaluate vessel mode shapes to help ensure the avoidance of mechanical resonance.

Tech Transfer has the capability to provide accurate vessel dynamic analysis per API 618 5th edition. We evaluate vessel mode shapes and ensure mechanical resonance is avoided. Forced response analysis is performed to calculate predicted vibration levels across the entire operating range of the compressor. When necessary, recommended modifications are provided in a timely manner.

Based on extensive field experience, our FEA models include the compressor frame, cylinders, pulsation bottles, scrubbers and piping — modeled using 3-dimensional shell elements to achieve the highest level of accuracy. Tech Transfer calculates inertial unbalanced forces, crosshead forces and cylinder gas forces based on compressor performance.

Analysis Scope
  • Vessel mode shape evaluation per API 618 5th Ed.
  • Mechanical resonance avoidance confirmation
  • Forced response analysis across full operating speed range
  • Predicted vibration level calculations
  • Modification recommendations when required
  • 3D shell element FEA — frame, cylinders, bottles, scrubbers, piping
API 618 5th Ed. Modal FEA Forced Response 3D Shell Elements
Vessel dynamic analysis model
Fig. SVC-04 — Vessel Modal Analysis · Mode Shape Visualization
SVC-05 / Field Vibration Analysis

When the analysis isn't enough — we go to the machine.

On July 1, 2023, Tech Transfer expanded its field engineering capabilities by opening TTI Field Engineering, Inc.

TTI Field Engineering provides a range of engineering services that specifically cater to troubleshooting equipment operation and detecting performance issues. In addition to high-quality field vibration monitoring and analysis, new diagnostic capabilities allow us to provide a complete analytical solution for the entire package of operating equipment.

Our field vibration analysis services deliver effective vibration and pulsation data collection to identify sources of vibration energy, identify equipment issues and provide comprehensive engineered solutions that improve reliability and safe operation.

Field Engineering Capabilities
  • On-site vibration and pulsation data collection
  • Equipment troubleshooting and performance diagnostics
  • Identification of vibration energy sources
  • Comprehensive engineered corrective solutions
  • Complete analytical solution for full operating package
  • Improved reliability and safe operation outcomes
Visit TTI Field Engineering, Inc.
TTI Field Engineering
Fig. SVC-05 — TTI Field Engineering, Inc. · Est. July 2023
SVC-06 / Foundation Design & Analysis

What's under the compressor matters as much as what's above it.

Our concrete foundation analysis services help in the design of foundations for a wide range of reciprocating compressor horsepower levels that ensure low stresses, effective dissipation of unbalanced forces and even settlement.

Leveraging expertise gained over the last 35 years, Tech Transfer has completed the design and analysis for some of the largest reciprocating compressors installed on concrete foundations. Tech Transfer is capable of designing foundations with pilings or drilled piers and understands the pros and cons associated with skid mounting versus block mounting compressors.

To verify the design, foundation stresses and dynamics are calculated using detailed FEA models that include concrete, rebar, anchor bolts, equipment, skids and soil properties. Our multi-layer rebar design provides energy transmission and resistance to crack propagation.

Deliverables
  • Foundation construction drawings & bill of materials
  • Piling or drilled pier design and layout
  • FEA model including concrete, rebar, anchor bolts and soil
  • Foundation stress and dynamics verification
  • Grouting procedures & concrete specifications
  • Soil preparation notes and installation comments
Piling Drilled Pier ACI 351.3R Dynamic SSI FEA
Foundation construction
Fig. SVC-06 — Foundation Construction · Reciprocating Compressor Installation
Fig. SVC-06B — Foundation Cross-Section · Drilled Pier System
Engineered To Code
API 618
API 619
API 617
API 661
API 674
API 610
API RP2A
ASME B31.3
ASME B31.8
ASME Sec. VIII
AISC
ACI 351.3R
ASCE 7
API 11P
GMRC
API 618
API 619
API 617
API 661
API 674
API 610
API RP2A
ASME B31.3
ASME B31.8
ASME Sec. VIII
AISC
ACI 351.3R
ASCE 7
API 11P
GMRC