Thursday, December 4, 2025, 11:00 AM - 01:00 PM CT
Thursday, December 4, 2025, Colin Hosli, P.E., Lead Wells Engineer with Shell E&P Co. will speak on “Unique Interventions and Protecting First Oil Using Hydraulic Riserless Technology” at Shell’s office located in the Hancock Whitney Center, 701 Poydras St, Room 2114, New Orleans, LA 70139. The meeting is at 11am with a BBQ lunch and networking and presentation at 11:30am. Please bring an unexpired government photo ID to Shell receptionist on day of meeting.
Parking
Regarding parking, there is parking in the Hancock Whitney Center with vehicular entrance on Carondelet Street. It usually costs $13.20 for 3 hours. The parking website is go.lazparking.com and parking phone is (985) 956-6927. Also, there is parking on the street which is $6 for 2 hours (feed the meter which accepts credit cards) or use the Premium Parking lots at about $16 for 2 hours and reservable. See website parkopedia.com (for street parking & lot parking) or premiumparking.com (for lot parking).
Abstract
The technology, equipment, and methodology for hydraulic riserless interventions have evolved over the decades since introduction to the market, but the basic fluid dynamic and flow manipulation principles remain unchanged: provide a method of introducing pressure and flow to move a fluid from a starting point to its target location. Traditionally, as regards subsea interventions, a stimulation recipe is comprised of formation compatible fluids that are pumped from a vessel or MODU. The fluids are pumped down dual coil tubings, through a subsea safety module, and bull headed into the well. Cycles of this one-way pumping train and/or manipulations of what fluids are located in the conduit in the water column may be adjusted but the direction of flow is typically only into a well, with limited or no ability to receive well returns or produced fluids back to surface.
Deepwater subsea interventions were historically complex due to the more bespoke ancillary support ser-vices and equipment needed including stably accurate heave compensated cranes, reliable work class ROVs, moonpool or side vessel cantilevered access systems, subsea bladder and containment systems, and often times simultaneous vessel operations. Over time, delivery of these elements have greatly improved allowing for simplified operations and a new standard for “typical” interventions. This transition from the more complex perception of execution to standardized implementation has allowed for enhanced comfort in departing from only the traditional unidirectional pumping type of operation to performing more unique interventions as well as using riserless hydraulic technology equipment and methodologies for protecting first oil.
This paper will present four (4) short case studies delivered by a major operator in the Gulf of America demonstrating more unique interventions, some of which will implement bullhead operations but with a different take on how to accomplish the objectives scoped. The longevity and degree of execution performance of these four (4) case studies varies. The first case study will cover four wells that were stimulated in approximately 8000 feet of water after having landed on a single vertical tree hub and pumping through a production manifold. The second case study will reference SPE-210607 “A Return to Production: Subsea Packer Leak Remediation with Pressure-Activated Sealant” but provide more insight on the detailed planning considerations implemented as well as the well operating envelope modifications that were considered. The third case study will cover a hydrate remediation operation landing on one well freeing stuck wireline tooling deployed from the vertical access point on a different well of a spar rig. The final case study will cover the planning and execution of a fluid loss device opening campaign that provided critical path timeline assurance to first oil delivery on a major production asset in the Gulf of America.
Biography
Colin Hosli is a native New Orleanian and professional engineer who has worked in the industry for nearly 14 years with Shell. After graduating from Louisiana Tech University in Electrical Engineering and Mechanical Engineering, starting off in the GoA Completions, Well Interventions and P&A business unit, Colin moved to work in Shell Western E&P’s onshore Permian Business Unit. After completing a stint in Shell Western E&P’s CWIPA operations, Colin returned to NOLA as a completions engineer working Mississippi Canyon operations progressing to an Appomattox and Rydberg I3P role qualifying BOP and Completion equipment through the all-new process in implement for the HPHT development. Colin then moved to a Subsea Well Intervention engineering role enjoying the opportunity to utilize a variety of Well Access Systems (OWIRS, IRS, SSBOPs, SILS, SPWIS etc.), Work Units (MODU, CATB, MSV, etc.), and control systems. After some years, Colin worked in the field as a Shell Supervisor (think “Company Man”) to reconnect with operational delivery before electing to return to an engineering role in Shell’s DVA and Riserless WIPA GoA Business Unit.
Colin has achieved or maintained a litany of internal and industry accreditations and certificates including but not limited to…
• T-HUET,
• IADC and IWCF Surface and Subsea Stack Well Control Training with required Well Intervention Addendums,
• TWIC,
• BSEE compliant annual awareness training,
• Shell Round 1 and Round 2 certifications, and
• Valid Professional Engineering licensure within the state of Louisiana since 2016
Colin is married to Rachel, an attorney for Shell, and cherishes his son who is just under 1 year old, looking forward to seeing his son grow to a be a cultured, driven, and happy boy with an engineering and legal mind and funky NOLA spirit.
Contact Information
New Orleans, LA, United States