Innovative Water Shutoff Solutions Using Coiled Tubing Conveyed Inflatable Devices (2002)

Innovative Water Shutoff Solutions Using Coiled Tubing Conveyed Inflatable Devices Martin J. Geddes; Martin J. Geddes Baker Oil Tools Search for other works by this author on: This Site Google Scholar Gordon R.J. Mackenzie Gordon R.J. Mackenzie Baker Oil Tools Search for other works by this author on: This Site Google Scholar Paper presented at the SPE Western Regional/AAPG Pacific Section Joint Meeting, Anchorage, Alaska, May 2002. Paper Number: SPE-76709-MS https://doi.org/10.2118/76709-MS Published: May 20 2002 Cite View This Citation Add to Citation Manager Share Icon Share Twitter LinkedIn Get Permissions Search Site Citation Geddes, Martin J., and Gordon R.J. Mackenzie. "Innovative Water Shutoff Solutions Using Coiled Tubing Conveyed Inflatable Devices." Paper presented at the SPE Western Regional/AAPG Pacific Section Joint Meeting, Anchorage, Alaska, May 2002. doi: https://doi.org/10.2118/76709-MS Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentAll ProceedingsSociety of Petroleum Engineers (SPE)SPE Western Regional Meeting Search Advanced Search AbstractWith water production continuing to increase from mature reservoirs and the need to enhance hydrocarbon recovery from these reservoirs economically using existing wellbores, the requirement for innovative thru-tubing zonal isolation solutions has never been greater. Due to the complexity of the completion design and reservoir in mature fields, the benefits of high-expansion plugging devices and coiled tubing conveyance for chemical placement have become increasingly important.Thru-tubing inflatable technology has, for some time now, been providing high-expansion devices to pass through the existing completion and isolate in the liner or casing below. However, as reservoirs deplete and remedial work such as re-perforation is performed, the conditions in which these tools are required to perform are becoming ever more challenging.This paper will focus on two coiled tubing water shutoff interventions using thru-tubing inflatable technology in conjunction with cement or chemical placement. In these interventions, the wellbore conditions were considered particularly challenging - sub-hydrostatic bottomhole pressure, multiple perforated intervals and an existing zonal isolation device in the form of a straddle. These case histories will be examined in detail, with emphasis on the pre-job planning, equipment selection, operational procedures, lessons learnt and post job results.IntroductionIn order to maximize the chances of success of a thru-tubing inflatable water shutoff intervention, it is imperative to properly plan the intervention. The following key aspects of the planning phase have been identified and should always be given full consideration:Gathering of complete and accurate wellbore informationFull understanding of equipment limitations to ensure operating envelopes are not exceededPreparation of the wellbore prior to thru-tubing inflatable interventionIn order to facilitate the pre-job planning process, a number of initiatives have been developed and are used to ensure that the aforementioned key aspects are fully addressed. These initiatives have been discussed more fully in SPE 54476 - "Through Tubing Inflatables: Isolation Planning and Guidelines for Coiled-Tubing Applications" and some are listed below:Client intervention planning guidelinesStructured interface document for recording of well bore informationUse of memory pressure/temperature gauges in drift runsEngineering analysis aided by software and performance envelopeIncreased global communication via webcasting techniqueProblem solving/risk matrix for mitigation of risks to success of interventionThis paper will provide a detailed analysis of two particularly challenging thru-tubing inflatable water shutoff isolations, and will demonstrate how several of the aforementioned initiatives were used to maximize the chances of success of the interventions. Keywords: packer, information, lower zone, nipple profile locator, well integrity, retrievable bridge plug, liner, application, valve, coiled tubing operations Subjects: Perforating, Completion Installation and Operations, Well Integrity, Coiled tubing operations, Zonal isolation, Completion Operations This content is only available via PDF. 2002. Society of Petroleum Engineers You can access this article if you purchase or spend a download.