May 12, 2021


Description

A sealing material is developed for refrac purposes. This material is liquid on surface, then hardens to form a plastic solid that creates a barrier across the legacy fracture pathways and perf openings.

 

The hardened material left in the wellbore was drilled out using a blade bit. After cleaning out past the top perforation cluster, the zone was pressure-tested up to the maximum allowable wellhead pressure, which translated to 5065 psi bottom hole differential pressure. After holding for 25 minutes, the pressure was released and drilling was resumed on the sealing material that covered the lower interval. Drill-out continued to a depth below the bottom depth of the lower perforation cluster. A subsequent pressure test yielded a differential pressure of 4976 psi. The material’s differential pressures measured in the field exceeded the results from laboratory testing. Drill cuttings confirmed that the sealing material had hardened downhole and this field test showed that the product can crosslink to form a solid barrier. Additionally, the material left in the wellbore was easily drilled out leaving a full-opening original casing ID. Some of the key factors that can enhance the performance of this sealing material is extensive laboratory testing, the use of diverters, appropriate downhole tool assemblies and squeeze methods; all of which help achieve full coverage of all the perforations.


Featured Speakers

Speaker: Dale Larsen
Speaker Dale Larsen

Dale Larsen graduated with a B.S. degree in Geological Engineering from the South Dakota School of Mines. He has worked in the oil and gas industry for over 38 years spending several years with The Western Company of North America, BJ Services and Calfrac Well Services. He served as a …

Dale Larsen graduated with a B.S. degree in Geological Engineering from the South Dakota School of Mines. He has worked in the oil and gas industry for over 38 years spending several years with The Western Company of North America, BJ Services and Calfrac Well Services. He served as a Production Engineer for EP Production and Westport Resources in Vernal, UT and as a Production Superintendent for QEP also in Vernal, UT. He has also worked extensively in Colorado and South Texas.


 


Dale has written three Society of Petroleum Engineers (SPE) papers while serving in many leadership roles for SPE. Dale has served on the Board of Advisors with Western Energy Alliance (WEA) and as a member of the Legislative, Legal and Regulatory Committee for Colorado Oil and Gas Association (COGA). Dale is the 2017 recipient of the WEA Roustabout Award which recognizes Distinguished Career Achievement in the Service Sector of Oil and Gas.


 


He has spoken in many venues informing and advocating groups about Hydraulic Fracturing including Colorado Oil and Gas Association (COGA); Department of Energy (DOE) Analytical Services Program; Energy Fellows Institute; ICoTA Conferences; Refracturing Conferences, URTeC U-Pitch Sessions.


 


Dale is currently employed by New Well Tech, a Houston-based company, that promotes a new refracturing science. His current role is Business Development Manager.

Full Description



Organizer

SPE Gulf Coast Section


Date and Time

Wed, May 12, 2021

noon - 1 p.m.
(GMT-0500) US/Central

Pricing

  • Member
    $15.00
    Seats available 100
    (ends 05/12/2021)
  • Non-Member
    $20.00
    Seats available 50
    (ends 05/12/2021)
  • MiT / Student / Retired
    $10.00
    Seats available 5
    (ends 05/12/2021)
Become a member

Location

WEBINAR



United States of America

Webinar log in details will be sent to the registrants before the event.


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