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Romeo Castellanos

Oilfield & Industrial Professional

Work experience

Nov 2014Feb 2015

Directional Driller

Cathedral Energy Services

Review and execute well plan proposal, providing projections of well bore path as drilled. Strap mud motors and tubulars used in directional drilling. Design a BHA proposal. Calculate bit projections and proximity to the well plan and any existing wells.  Generate daily reports, including costs, inventory and activities. Monitor drilling parameters as related to mud motor and guidance equipment, providing optimal performance of tools. Provide as-drilled reports as necessary. Clients: Chesapeake Energy, Occidental Petroleum.

May 2013Nov 2014

Senior MWD Field Engineer & Trainer / Night Directional Driller


Utilize MWD software to acquire and record downhole conditions. Slide drill as necessary to maintain well plan. Rig up and rig down MWD surface equipment and tool. Strap mud motors and tubulars. Program and test MWD tools, maintaining tool run records, daily reports, end of run summaries, end of well reports, survey reports, LAS files and gamma logs. Take downhole surveys as needed. Provide reports to well team. Train new MWD personnel. Clients: Energy Corporation of America, Linc Energy Australia, InterOil(Papua New Guinea).

Feb 2010Apr 2013

Senior MWD Field Engineer

Sharewell Energy

Assemble, program, test and troubleshoot MWD tools and equipment. Communicate with Directional Driller providing downhole surveys and magnetic positioning. Monitor and record formation data, including: inclination and azimuth of BHA, gamma ray, temperature, depth, flow rate, dog leg severity and downhole pressure via MWD transducer. Maintain communication with company representatives, drilling engineer, geologists, and internal management. Rebuilding tools as needed. Test components and troubleshooting tools in the field. Provide reports for all activities. Clients: Marathon Oil & Gas, Cabot Oil & Gas, Clayton Williams Energy, Jones Energy, King Oil & Gas, SM Energy, Newfield Exploration, Goodrich Petroleum, Penn Virginia Oil & Gas, Pioneer Natural Resources.

Sep 2009Dec 2010

MWD Field Tehnician


Rig up and rig down Pathsat satellite system, tools and surface equipment. Program and operate MWD equipment providing real-time downhole conditions. Obtain directional surveys. Program tool downhole through pump cycling sequences. Maintain a clean and safe workplace. Generate survey, gamma, daily operation and tool performance reports. Clients: Anadarko Petroleum, EOG Resources.

Jun 2006Sep 2009

Senior MWD Field Engineer 

The Directional Drilling Company

Supervise assembly of MWD surface equipment, tool and cabling. Strap mud motors and tubulars. Test and monitor MWD tools, maintaining tool run records, daily reports, end of run summaries, end of well reports, survey reports, LAS files and gamma logs. Utilize MWD software to acquire and record downhole conditions. Communicate with drilling team as necessary. Provide costs and supply reports. Manage shipping manifest and transfer of inbound and outbound equipment. Clients: Devon Energy, Abraxas Petroleum Corporation, Gulftex, Riata(SandRidge), EOG Resources, TXC Resources, Encana, Dale Resources, XTO Energy, Linn Energy.

May 2004Jun 2006

Laboratory Analyst/ Plant Operator

City of Deer Park

Responsible for the bacteriological testing of public drinking water. Conventional Bac-T and e-coli testing, as well as Col-Alert test were performed. Maintain cultures and laboratory processes. Extensive QA/QC and record keeping procedure followed. Operate and integrate new plant module assuring public health as a priority. Coordinate system upgrades coming online and operate plant as needed. Designated “ Essential Personnel” during disaster episodes. Man control room and operate plant processes.

Jan 2000May 2004

Senior Plant Operator

City of Houston

Operate and supervise a 350 million gallon per day municipal water plant. Supervise Command Center controlling processes through SCADA systems and conventional controls. Liaison to programmers and contractors during multi-million dollar system upgrade. Operate pilot plant to conduct trail runs of emerging processes.


Environmental Science

Texas A&M University