Experience

PESI has successfully executed numerous projects from FEED, feasibility studies and conceptual designs through detail engineering and design, procurement services, materials management, and construction management/inspection services.

Following is a partial list of studies and projects engineered, designed, and/or managed by PESI:

PIPELINE PROJECTS

Numerous horizontal directional drilled (HDD) crossings of rivers, bayous, creeks, canals, highways, railroads, and foreign pipelines.
A 24” natural gas pipeline to connect two existing gas pipelines in South Louisiana.
Extensive liquid hydraulic analyses and cost estimates to optimize existing LPG gathering/transmission systems including line sizing, loop lines and pump stations.
62.0 miles of 8” pipeline from a plant in McNary, Louisiana to a pipeline connection at Iowa, Louisiana.
Study various options to clean and remove pipeline river crossings (required by The Corps of Engineers) which had been installed in the conventional cut-and-cover method.
Modifications/enhancements to 23.0 miles of 6” pipeline, where 98% of this existing line is in the marsh/wetlands. Complete pre-test and a DOT hydrotest was included in the scope.
Dual parallel 10” pipelines from Hackberry to Sulphur, Louisiana, a distance of 15.5 miles of which 40% is marsh/wetland.
A lump-sum turnkey project for a 6” pipeline in a very congested industrial area to a custody meter station on the delivery end.
A brine disposal system consisting of a brine gathering piping lateral, an internally coated brine disposal pipeline and a new brine disposal well.

Route selection, surveying, engineering, design, mapping, permitting, selection of materials and full QA/QC inspection for the installation of a 10” ethane line from a Citgo plant to a tie-in point on a Trident NGL, Inc. pipeline.

Conducted cross country pipeline feasibility studies involving field routing, pipeline hydraulics, conceptual design, detail cost estimates and reports for the following:
- 25.0 miles of ethane/propane and natural gasoline dual pipelines from gas plants to petrochemical facilities
- 135.0 miles of 10” pipeline to handle raw product from a gas plant to a fractionator
- 23.0 miles of looped 8” pipeline to handle raw product from a Tenneco gas separation facility
- 103.0 miles of multi-product, bi-directional 12” pipeline from underground storage to a
- petrochemical plant
- 98.0 miles of product pipelines from underground storage to underground storage
- 22.0 miles of 8” and 10” pipelines from a Duke
- Energy gas plant to a tie-in point on an existing
- Warren Petroleum line
- 55.0 miles of 12” pipeline from a natural gas processing plant to a pipeline connection

Seven (7) pipelines into and out of a fractionation facility each handling a segregated product. One (1) line was an ethane gas line involving multiple pipeline crossings and over two thousand (2,000) feet of process plant rack piping.
5.0 miles of 12” pipeline which included 1.5 miles of marsh and a 3,100 foot HDD river crossing.
Detail analysis and cost estimating of various options to submerge and backfill dual 4” and 6” pipelines crossing Federal wetlands. Several site visits were conducted with the Corps of Engineers, state agencies, and contractors.
A 4” acid gas pipeline system which included dehydration facilities and compression. Several trade-off options were analyzed including stainless steel pipe metallurgy versus a conventional carbon steel system.
Development and implementation of a comprehensive five (5) year rehabilitation program for a 105.0 mile 12” by-directional pipeline. The scope of this project involved replacing numerous sensitive pipeline segments, installing aboveground mainline block valves, new scraper traps, and running of geometry and smart pigs.

Rehabilitation and upgrade of an existing 4” pipeline from DuPont, Orange, Texas to NGC in Cameron, Louisiana. This project included replacement of several sections of 4” pipeline, relocation of mainline block valves, and a complete DOT hydrostatic test.
Complete lump sum turnkey project including surveying, permitting, engineering, design procurement and construction for the removal of an abandoned 8” pipeline and the relocation of a 20” crude oil pipeline in Sulphur, Louisiana.
Project management, detail engineering, design and field inspection for a multiple LPG pipeline interconnection between two (2) pipeline operating companies in Sulphur, Louisiana.
Conceptual design, preliminary routing, preparation of preliminary alignment sheets and cost estimating for a sixty mile crude C4 (LPG) pipeline system in south Texas. This project included assessment of ROW acquisition issues, environmental permits, and field routing of the pipeline.
Complete responsibility for preliminary surveying and mapping of 116 mile natural gas pipeline in California to the Mexican border. This project involved use of GPS survey equipment and aerial mapping of the entire route for EMS (AEP).
Detail hydraulic analysis and pipeline studies for a 500 km crude oil pipeline in Ecuador, South America.
Lump sum turnkey project to connect a new natural gas well to an existing pipeline system. This project involved detail engineering, design, procurement and construction of measurement facilities and gathering pipeline.
DOT Location Class survey, detail engineering, design, as-builts, job data books and consulting services for two (2) 16” gas pipelines feeding a grass roots power plant in Seguin, TX.
Detail engineering, design, coordination of all permitting and ROW activities associated with the relocation of seven (7) pipelines across the USCOE Maryland Levee system. Work includes continuous coordination of USCOE’s pile driving contractor work, construction inspection and as-built services.
Detail assessment of nine (9) LPG pipeline systems for geometry/smart pigging and pipeline integrity management purposes. Scope includes all detail engineering, design and as-built services.
Complete engineering, design, mapping, inspection, as-built and consulting services for a 24” natural gas pipeline to FPLE’s grass roots power plant. Scope includes manifold tie-ins, complete smart pigging facilities and several Horizontal Directional Drills.

Development of Pipeline Integrity Assessment Plans for all PNG’s pipelines to comply with TRRC Regulations. Work includes due diligence assessment of all pipeline records, field investigations, preparation of maps and risk indexing of all segments of each pipeline affecting “highly sensitive areas”.
Complete detail engineering, design, and mapping of a horizontal directional drill 8” pipeline crossing of Calcasieu River, Louisiana. Scope included detail engineering, preparation of construction bid packages, consulting services, and as-builts.
Complete responsibility for alignment sheets, surveying and mapping of 116-mile 20” natural gas pipeline in California to the Mexican border. This project involved use of multiple GPS survey crews and aerial mapping of the entire route.
Detail engineering, design and mapping for the relocation/rerouting of 18” and 12” natural gas pipelines in Clear Lake, Texas. Scope included, surveying, permitting, detail engineering and design and included a HDD crossing and pigging facilities.
Detail engineering and design of mainline valve stations and pigging facilities on each end of a 17-mile 20” natural gas pipeline for Hill Lake Gas Storage Project, Cisco, Texas, Our scope also included complete as-built of the pipeline, job books and the DOT Location Class surveys.
Detail engineering and design for the replacement of a 16” brine collection and distribution pipeline system. The entire project was located in shallow water and marsh and included tie-ins to 9 LPG storage wells.

Front-end Engineering Design (FEED) of an offshore 20” gas pipeline and condensate receiving facilities in south, Texas. The scope of this project included pipe sizing, flow modeling, route selection, sub-sea connection and separation facilities on land.
Detail design for the burial of 4.0 miles of 14” pipeline in the Gulf of Mexico. PESI was overall project manager and also designed the burial and anchoring structures for this pipeline.
Performed conceptual design for a PLEM tie-in and a sub-sea connection to a foreign pipeline in 75 feet of water.
Completed a study and conceptual design of a multi-pipeline offshore LNG system including 28 miles of new 24” pipe, subsea tie-in’s, platform connections and compression facilities.
Seven (7) pipeline relocation projects in Tomball, Texas that involved the detail engineering, design, material specifications and construction inspection of four (4) HDD crossings.
Complete detail engineering, design, and mapping of three (3) horizontal directional drill pipeline crossings and approx. 3-miles of cross country pipelines and laterals in Nacogdoches County, Texas. The scope included detail engineering, preparation of construction, bid packages, consulting services, and as-builts.
Complete responsibility for routing, surveying and mapping of a 35-mile LPG pipeline in Liberty County Texas. This project involved use of GPS survey equipment, Trinity River profiling and aerial mapping of the entire route.
Detail engineering, design and mapping for the installation of dual 24” natural gas pipelines in Louisiana. The scope included, detail engineering and design and included 2 HDD crossings and pigging facilities

METER AND REGULATORS STATION PROJECTS

Raw product (HVL) and isobutane meter station, including dual segregated pipeline laterals with tie-ins to existing Mobil pipelines. This job also included a complete SCADA/Comm. System for remote control.
Measurement of ethane from Enron and an 8” pipeline to tie-in to an existing 10” pipeline. This project included a hot tap on the existing ethane pipeline.
A multiple source crude/condensate measurement (LACT) and pipeline gathering network in Johnson Bayou, Louisiana. This project involved setting the LACT units in existing gas plant facilities and interfacing with existing SCADA systems.
Complete detail engineering, design, and construction management of a custody transfer high pressure liquid ethane measurement facility including mechanical, civil, process, and I&E design.

Lump sum turnkey project for ECLP (AEP) for a fuel
gas control system and pipeline for a cogeneration facility in Longview, Texas. The scope of this project involved detail engineering, design, procurement and construction
of access roads, gas scrubber, condensate storage,
control building, and several directional drill crossings.
Detail engineering, design, and construction management of a raw product (LPG) custody measurement, control system, and pipeline from a process plant to the customer’s mainline, then to a fractionation plant.
Lump sum turnkey project to connect existing gas processing and dehydration facilities to an existing natural gas pipeline. This project involved detail engineering, design, procurement, and field construction of piping, measurement, instrumentation and other ancillary components for the entire project.
Lump sum turnkey project to engineer, design, furnish and install a gas measurement facility. The scope of this project included a connecting pipeline and tie-in to a transmission pipeline in northeast Louisiana.
Detail engineering, design, and construction inspection of a natural gas measurement and control facility in south Texas.

PUMP AND COMPRESSOR STATION PROJECTS

A multipurpose pump station with dual pumps, manifolded to pump any double combination of natural gasoline, liquid ethane and propane with each pump providing 100% redundancy to the other.
Receive propane from DuPont through a grass roots meter Station at the receiving end and a booster pump station for injection into an existing LPG pipeline on the other end.
Conduct numerous studies for the complete turnkey costs of adding booster pump stations to existing mainlines with the objective to increase throughput.
A pipeline booster station to increase the pressure from an existing isobutene pipeline into a delivery pipeline then to underground storage.
Complete construction management and QA/QC Inspection of a grass roots raw product pump station including access road, control building, and a single horizontal split-case electric driven pumping unit.
Assess the optimum means of transporting raw product from refinery through an existing 16” pipeline into a fractionator for processing. This project involved the conceptual design and cost estimating of a pump station as well as converting the service of the existing 16” line from natural gas to liquids.

Assignment of a team of designers to completely as-built existing LPG pump and measurement facilities including field data gathering, surveying and drafting.
Complete detail engineering, design, and construction management of a 1200 HP ethane compressor which was installed in a sixty thousand BPD fractionation plant in Sulphur, LA.
Conceptual design, sizing of all equipment, preparation of P & ID’s, preliminary plot plan and detail cost estimates for a 1,000 HP gas compressor station in west Texas.
Engineering and design of an ethane pump station to boost liquid ethane from one pipeline system to another in south Louisiana. The scope of this project included all I & E and SCADA and communication work.
Detail engineering and design of a raw product (Y-Grade) booster pump station. The scope of this project included all Civil, Mechanical, Piping, I & E and SCADA and communication work.

VARIOUS FACILITY PROJECTS

Closure of an abandoned 50,000 barrel brine pond. Very rigid environmental closure parameters from the State of Louisiana had to be followed.
Dredging of marine terminals at a slip on the Calcasieu River, Louisiana and on the banks of the Sabine River, Texas. Close coordination with the Corps of Engineers and the Natural Resource Conservation Departments in Texas and Louisiana was crucial to the success of these projects.
Conversion/adaptation of a ship terminal to handle the loading of isobutane onto dual barges simultaneously. Major modifications to breasting dolphins and a loading arm was part of the scope.
Receipt, storage, and truck loading of raw product (HVL)from a process plant and truck unloading into existing storage, then injection into an existing pipeline.
Re-activation of an existing dock on the Mermentau River in Louisiana including modifications/enhancements to load LPG barges. This project included five (5) 90,000 gallon bullets for storage of the LPG.
A grass roots marine terminal in Texas for receiving, storing and loading dual crude/condensate barges at 5,000 BPH simultaneously. Meeting US Coast Guard requirements for vapor handling technologies and the TNRCC for emissions was critical.
Routing, engineering, design and construction of marsh, multi-layer, board/gravel roads to grass roots facilities.

Truck unloading of crude/condensate including storage tanks, measurement through LACT units, booster pump station and utilization of old and new pipelines to an island in South Louisiana for loading onto barges.
Expansion of an existing 700,000 barrel brine pond to 2,100,000 barrels to support an existing underground LPG storage facility. A three (3) part containment system was used including a clay liner, a slurry wall, and an HDPE liner within the slurry wall.

A multi-product LPG dual manifold system to receive and distribute ethane, propane, isobutane, and normal butane from Citgo Petroleum to Warren Petroleum.
A grass roots raw product storage and barge loading facility at Morgan City, Louisiana. This project included over fifty (50) 90,000 gallon LPG bullets and a new dock facility.
A comprehensive study for a sixteen (16) well underground salt-dome storage facility including fresh water systems, brine systems, LPG pumps and associated facilities.