Larry Smock has over 30 years of experience in cost estimating for major capital projects in the oil and gas industry. He has specialized expertise in using Aspen Tech estimating software. As a senior estimator, he developed capital cost estimates for multi-billion dollar projects to support funding approval. Responsibilities included verifying engineering data, reviewing equipment quotes, and validating risk and contingency calculations. He also has experience managing teams of estimators and producing estimates at various stages of project definition.

1. Larry Smock
Senior Estimator
PROFESSIONAL EXPERIENCE
Senior Cost Estimate Assurance Lead – Shell Oil, Houston
2013 – 2015
Develop Capital Cost Estimates required to support capital funding of projects as they advanced through the Shell phase
gate project approval process.
The project gate process, and estimates required are as follows:
(stage 1) Identification estimates based on minimal engineering data. +/- 50% accuracy.
(stage 2) Define Estimates to better refine scope and evaluate options +/- 30% accuracy.
(stage 3) Detailed estimates or FEED estimate used to request project funding +/- 10% accuracy.
Detailed estimates are quantity based estimates, requiring complete mechanical equipment list, quotes on major
equipment, and bulk material quantities provided by engineering design data. Completion of the stage 3 estimate was a
requirement to obtain capital funding approval to advance into the detail design execution phase.
Other Assurance activities included conducting estimate kick-off meetings, writing estimate plans, and compiling the final
Basis of Estimate report documenting project scope and assumptions, and benchmark metric comparisons.
For larger projects (over 100 million), stage 3 estimate were often outsourced to a third party EPC contractor. Shell
Assurance Estimator responsibilites included approval of the contractors estimate plan, visiting the contractors facility to
verify procedures outlined in the estimate plan were being followed, and that engineering deliverables to support the
estimate were staying on schedule. Shell assurance validated construction labor rates, contingency risk calculations,
inflation caculations, and reviewed equipment quotes and qualifications. At the conclusion of the EPC estimate, Shell
estimate assurance added Shell owners costs, and any third party contractor costs that were outside the scope of the
EPC contractor. Shell Assurance participated in monte carlo risk analysis sessions to determine the final contingency, and
was responsible for validation and completion of the final project estimate.
Estimating Manager
2006 – 2013
WorleyParsons, Bellaire, Texas
Lead Estimator supported by discipline estimators successfully completed the following project estimates listed
by client/owner company. Primary estimating methodology was AspenTech Capital Cost Estimator
supplemented by excel spreadsheets. Field Construction of The Celanese methanol plant listed below,
completed at the end of 2014 and the plant is now in operation.
Celanese – Methanol Plant and Offsite Utilities Clear Lake City, Texas (approximately 600 million US dollars). Estimating
Manager responsible for the FEED +/- 10% estimate. Specified engineering deliverables necessary to meet the estimate
accuracy ranges, developed estimate plan, and estimate basis report, The project required two estimates for incremental
funding, a Class 2 +/- 30% estimate, followed by a Class 3 +/- 10% detail estimate. Project was primarily a greenfield
plant involving all construction disciplines from site work through new process structures, process equipment, new pipe
racks and piping, instrumentation and control systems, electrical infrastructure, and buildings. Project included an OSBL
(brown field) scope of work that included modifications to the existing Celanese plant required to support the new
Methanol plant.
INVISTA – SCIP HMD Plant Shanghai, China. Lead Estimator responsible for executing a Class 2 Estimate for our client
INVISTA. Estimate was executed by the Houston estimating team, with assistance and support of WorleyParson
Shanghai estimating and procurement. The estimate used the Clients specialized AspenTech estimating template system.
Extensive adjustments and modifications were done to the Aspen Template to create a China estimate basis. The project
involved proprietary new technology and INVISTA required strict intellectual property protection. Project was a greenfield
plant involving all construction disciplines from site work through new process structures, process equipment, new pipe
racks, OSBL and ISBL piping, instrumentation, electrical infrastructure, and buildings. This was a unique estimate,
receiving engineering deliverables and cost data from both the Houston office and Shanghai office engineering and
procurement groups.
INVISTA – Nylon Intermediates Plant Orange Texas. Lead Estimator responsible for executing a Class 3 Estimate for
INVISTA. This was a detailed +/-10% estimate based on engineering provided MTO quantities input into the Clients
specialized AspenTech estimating system. The project involved new technology and work was done on an Intellectual
Property secured floor. The project added one new process unit, a large steel structure, new process equipment, new
electrical substation building, modifications to existing buildings, sumps, extensive modifications to existing process units,
and OSBL pipe racks and piping. Success of this estimating effort contributed to WorleyParsons being awarded the detail
design engineering and construction management contracts for the project.

2. Chevron – First Eocene Steam Flood Development Project (WAFRA), Bellaire, Texas Office. Lead Estimator coordinating
a team of estimators executing a Class 2 Estimate for the Chevron operated Saudi Arabia – Kuwait Oil Company joint
venture Steam Flood Enhanced Oil Field Recovery Project. This multibillion dollar project involved two major scopes of
work areas. A large central processing facility containing the supporting project infrastructure, including electrical power
generation units, acid gas removal units, boiler feed water units, oil gathering and separation facilities, Steam generation
boilers, compressors for reinjection of acid gas back into existing wells, storage tank areas, dewatering facilities and
administration buildings. The second major portion of the project included modifications to the existing oil field to
implement steam flooding equipment and piping. This included installing millions of feet of Steam injection piping,
production gathering piping, water collection piping, and installation of steam boilers distributed throughout the oil field.
Electrical work required installing tens of thousands of feet of high voltage cable to power pumping jacks at the well head.
The drilling of thousands of new steam injection and production wells by a drilling contractor was not part WorleyParsons
scope, and was handled separately by Chevron.
US Steel – Quench and Temper Project, Lorain, OHIO. Lead estimator for a WorleyParsons project in Chicago.
WorleyParsons was awarded an alliance contract with US Steel for engineering/detailed design of a Quench and Temper
Facility to be located at US Steel’s plant in Lorain, Ohio. This resulted in an immediate need to develop a +/ - 10%
estimate to support the US Steel Capital Authorization process. Responsibilities included working with WorleyParsons
engineering and client representatives to define the project scope and specify the required deliverables needed to perform
the estimate. Other duties involved communications with vendors regarding sizing and pricing of process equipment and
bulk materials. Scheduled and held estimate reviews with WorleyParsons management and US Steel management. The
estimate was completed within the allotted timeframe and the project was successfully approved.
Saudi Polymers NCP Project. Provided estimating support, representing the client/owner interests for the Saudi
Polymers NCP Project. Assisted the client with implementing unit rate type contract strategies and evaluating contractor
unit rates and quantity submissions. Reviewed and estimated project variances to determine their net cost impact to the
project. Other tasks included reviewing contractor submitted change orders and tracking current construction contract bid
costs to the original estimated budget for the contract scope of work.
Petrobras – Comperj Project. Senior Supervising Estimator for multi-billion dollar Petrobras Comperj refinery and
chemical complex. Worked with the client and engineering to identify deliverables required to support the FEED estimate.
Co-ordinated dates when piping and Process Engineering would have engineering data available to complete the
estimate. Used a combination of Aspen Tech products and factored estimating tools to determine the required material
and installation costs. Responsible for estimating all piping, pipe racks, structural steel, and civil portions of the project.
Conducted the estimating review for WorleyParsons Engineering Management and presented the piping and structural
steel portions of the Client Estimate Review.
Senior Supervising Estimator, International Assignment, WorleyParsons, Atyrau, Kazakhstan
Worked on the following two projects while on this assignment:
Tengiz Chevroil – Vent Gas Recovery, Atyrau, Kazakhstan. Primary responsibilities were to work with client
representative and WorleyParsons Engineering to produce conceptual pre-FEED estimates to assist clients in advancing
their projects through the project definition phase and budget appropriation process. The Vent Gas Recovery Project
included piping collection systems, process equipment, and storage facilities.
Tengiz Chevroil – Debottlenecking and Infrastructure Project, Atyrau, Kazakhstan. The Debottlenecking and
Infrastructure Project required adding an additional process train and larger piping headers to increase throughput
capacity and increasing the plant storage facilities. Project also required rerouting some existing plant roads and adding
new plant roads. The existing rail car transportation system capacity was expanded by adding new rail track and
expanding the rail switching yard.
Supervising Estimator, WorleyParsons, Houston, TX
Marathon Oil Joint Venture – EGLNG Train 2 Gas Plant Project, Equatorial Guinea. Supervising Estimator for the West
Africa Gas Capture, EGLNG Train 2 Gas Plant FEED Project. This was primarily a grassroots liquefied natural gas (LNG)
project, but it included some modification to ship loading facilities. Coordinated efforts of the client and engineering to
obtain the engineering data and information required for estimating to produce the FEED cost estimate. The estimate was
used for the financial and economic assessment of the project. The estimate utilized a combination of Aspen Technology
“KBASE” estimates and Excel spreadsheets. Also performed numerous additional study estimates for engineering and
process alternative studies.
Senior Project Estimator

3. 2002 – 2006
Jacobs Engineering, Houston, TX
Estimated new Greenfield Capital Authorization projects for clients such as Exxon Mobil, Occidental Petroleum, DuPont,
Lyondell, and Dow Chemical. Produced conceptual estimates based on preliminary P&IDs and limited engineering data,
as well as detailed estimates for full authorization later in the project cycle as engineering became more well-defined.
Several of these projects were related to rebuild portions of plants that had been damaged by Hurricane Katrina.
Also estimated revamp type projects, making modifications to existing plants. Some of these projects required
communications with the project manager and engineering to define the scope of work to be included in the estimate.
Responsible for determining the projected work hours to produce an estimate and monitoring the actual hours spent.
These were typically smaller projects in the range of 5 to 15 million dollar total project cost. Some of these estimates were
for projects that were part of an alliance partnership between the owner and the engineering contractor.
Project Estimator
1997 – 2002
Dow Chemical, Houston, TX
Developed detailed project construction grade estimates for large general mechanical projects and smaller construction
addendum and field change orders. To save project cycle time, many projects were awarded to construction contractors
without a competitive bid process. The Dow detailed estimate would be used as a baseline for the expected contract cost.
After the project had been awarded and as construction was ongoing, the construction contractor would prepare a cost
estimate for its scope of work. If there was a significant difference between the Dow estimate and the contractor’s
estimate, there would be a negotiation with the contractor to arrive at a mutually agreeable total contract cost.
Construction Estimator
1991 – 1997
Gulf States Incorporated, Freeport, TX
Prepared lump-sum fixed dollar competitive bid estimates for petrochemical construction projects. These estimates had to
be competitive in order to win bids, yet accurate enough to ensure that the contract was profitable if awarded the bid.
Typical estimates ranged from $500,000 to $5,000,000. Experience included an eight-month field assignment as a Field
Engineer for a large Destec Co-Generation power project. Estimated many of the field change orders for this project.
Other responsibilities included attending site visits to evaluate existing plant conditions for projects that Gulf States
intended to submit a bid proposal for. This job provided valuable experience on a wide range of estimates including civil,
piping, structural steel, storage tanks, and underground high pressure pipelines.
Design Engineer
1978 – 1991
Hughes Tool Company, Houston, TX
Worked as a Project Design Engineer responsible for designing Hughes drilling products using a computervision CADD
system. Worked in the manufacturing engineering department for two years. Participated in setting up quality procedures
to successfully achieve ISO 9001 certification.
Field Engineer, Hughes Tool Company, Houston, TX
Worked closely with Product Engineering to field test new rolling cone rock bit designs. Stationed in Oklahoma City,
Oklahoma, position involved providing technical drilling assistance to customers in the mid-continent region.
SPECIFIC TECHNICAL EXPERTISE/SPECIALIST COURSES:
Ten years of experience with Aspen Tech Estimating Software, Aspen KBASE, Aspen IPM, Aspen Capital Cost Estimat or,
and Aspen In Plant Cost Estimator.