First Coiled Tubing Swellable-Packer Deployment in the Middle East

Noguera, José Antonio; Sierra, Leopoldo; Jørgensen, Thomas

doi:10.2118/121434-ms

Cited by 4 publications

References 9 publications

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Swellable Packers Provide a Brownfield Water Management Solution in Open and Cased Hole – Case Histories Including Straddles, Plugs, Slimhole Sidetracks and Testing In Corroded Casing

et al. 2009

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More than two-thirds of the world's oil and gas is currently being produced from mature fields, and although new prospects continue to be discovered, the industry is realizing that the older finds, now mature, are significantly larger than originally thought. Therefore, much of the world's future oil and gas production will continue to depend on brownfield production. Traditionally, when wells in these fields started to show production declines, operators often chose to abandon them rather than consider rework operations, since most production declines resulted from difficult-to-remediate unwanted water or gas production. In addition to water and gas influx, many fields had less-than-ideal production environments that contained CO2 and H2S, causing corrosion of tubulars. Realization of the need to revisit mature-field production has encouraged new technologies and remedial options to be developed. One of the recently proven technologies, swellable-elastomer packers, has enabled successful workovers, sidetracks, and re-drills that might otherwise have been too difficult, unreliable, or too expensive to be performed a few years ago. The packer uses the swelling properties of rubber in hydrocarbon or water to expand so that the annulus around the pipe is sealed. This capability has proved to be a great advantage in older wells where corroded, pitted and otherwise irregular surfaces in addition to reduced wall thicknesses due to corrosion make setting and sealing of conventional packers very difficult. This paper provides case histories and applications of swellable straddles and plugs in openhole and cased-hole scenarios that have enabled shut-in wells to be placed back into production. The discussion will include coiled-tubing tool and wireline deployment methods, wells in which swellable packers have been run as part of the completion string, and testing of swellable packers that provided seals in corroded casing. The principles and techniques involved are applicable to brownfield situations worldwide. Introduction Since the introduction of swellable elastomer units approximately 10 years ago, approximately 20,000 of these units have been delivered to operators worldwide. Since then, the scope of possible applications has increased constantly as new ideas, trials, and technological advances have been introduced. Swellable-elastomer packers are run in both open- and cased-hole wellbores, in extended-reach-drilling (ERD) wells, in multilateral (MLT) wells; with feed-through in conjunction with intelligent completions, in hydraulically fractured wells, in combination with cement, and in producers and injectors in low-temperature to high-temperature/high pressure (HT/HP) fields.

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Swellable Packers Provide a Brownfield Water Management Solution in Open and Cased Hole – Case Histories Including Straddles, Plugs, Slimhole Sidetracks and Testing In Corroded Casing

et al. 2009

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Non-Cemented Casing Tieback String Reduces Expense and Risk in Deepwater Operations

Hinkie

2010

All Days

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The method of anchoring a tieback casing string using cement has been well documented. Industry standards for installing a tieback casing string usually have called for placing cement around the outside of the tieback casing string to provide a barrier against the potential of sustained surface casing pressure (SCP). The cement also is used to anchor the tieback casing string into the polished-bore receptacle during production. After cementing the tieback casing string, a cleanout trip is required to clean the inside diameter of the casing and to remove the landing collar and cementing wiper plugs. A recent application in deepwater Gulf of Mexico (GOM) allowed a major oil and gas company to perform a step change in technology that enabled the operator to perform the function more rapidly and at reduced expense. Swellable packers were used instead of cement, providing a novel, cost-saving and risk-reducing approach. This paper will discuss the use of swellable technology as an alternative method for anchoring a tieback casing string. This concept allows the operator to isolate potential downhole pressure away from the surface and to anchor the tieback casing string during production. By using swellable technology, no cleanout trip is required, which provides a substantial cost savings for deepwater operations. The unique approach also reduces the risk to the casing and drilling string from the removal of the cementing wiper plugs and the landing collar. The case history will provide the details of the new application and how it improved cost efficiency and enhanced operational safety.

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Water-and-Gas Shutoff Technologies in Horizontal Wells on North Komsomolskoe Field: Screening and Successful Trial

Nigmatullin

Nikulin

Shaymardanov

et al. 2021

Day 2 Wed, October 13, 2021

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The article describes the choosing a water-and-gas shutoff technology in horizontal wells (HW) drilled in terrigenous reservoirs of the North Komsomolskoye field. The well completion system is characterized by the use of liners equipped with external liner packers and inflow control devices (ICD). To solve the problem, the world experience in the use the water-and-gas shutoff technologies in HW was studied. A matrix for choosing a technology with the use of technical means and combined effect was developed based on the type of isolated fluid, the type of reservoir and the method of well completion. The technology of installing a straddle system with cup packers and a blind inter-packer pipe in a horizontal wellbore was selected to increase the success of work on isolating the inflow of water and gas in difficult geological conditions of the North Komsomolskoye field. The technology was successfully tested: a producing well with almost 100% water cut was return to effective production. A similar straddle system, but with a perforated spacer pipe, was used for directional injection of sealants selected for the conditions of the North Komsomolskoye field into the water cut zone of the horizontal wellbore. The results of pilot field tests indicate that there is a prospect of using water-and-gas shutoff technologies to limit water and gas inflow at the North Komsomolskoye field.

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First Coiled Tubing Swellable-Packer Deployment in the Middle East

Cited by 4 publications

References 9 publications

Swellable Packers Provide a Brownfield Water Management Solution in Open and Cased Hole – Case Histories Including Straddles, Plugs, Slimhole Sidetracks and Testing In Corroded Casing

Swellable Packers Provide a Brownfield Water Management Solution in Open and Cased Hole – Case Histories Including Straddles, Plugs, Slimhole Sidetracks and Testing In Corroded Casing

Non-Cemented Casing Tieback String Reduces Expense and Risk in Deepwater Operations

Water-and-Gas Shutoff Technologies in Horizontal Wells on North Komsomolskoe Field: Screening and Successful Trial

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