Expanding the Reach of Wireline Perforating

Aboelnaga, Sharif; Salsman, Alan Dean; Martin, Andy; Singh, Kamaljeet; Pandey, Arun K.; Guedes, Carlos Eduardo

doi:10.2118/180668-ms

IADC/SPE Asia Pacific Drilling Technology Conference 2016

DOI: 10.2118/180668-ms

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Expanding the Reach of Wireline Perforating

Sharif Aboelnaga

Alan Dean Salsman

Andy Martin

et al.

Abstract: Advances in technology are pushing the boundaries of what is possible with wireline cable conveyance with heavy payloads. New high-strength cables, conveyance systems, wireline tractors, prejob modeling software, and a wide range of additional enabling technologies have shifted the conventional norm for wireline perforating applications, thereby allowing for the successful shooting of very long perforating gun strings. Detailed job planning is required and, with the help of conveyance planning and shock modeli… Show more

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Cited by 5 publications

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Next-Generation Release Device: Strong, Safer, Efficient, and Rigorously Qualified

Sheiretov

Elstrop

et al. 2018

Day 1 Tue, March 27, 2018

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A new high-strength electrical release device has been developed that supersedes the typical weakpoint and achieves the same strength as the tool tension rating. A stronger release device facilitates running heavier tools on wireline, along with the ability to run significantly longer gun strings, which increases operational efficiency. The release device was subjected to a rigorous qualification program conducted to ensure the highest safety and reliability of this device under demanding conditions. This technology uses a motorized release that holds two sections together via retractable dogs. The release device operates using new telemetry protocols that are combinable and segregated from other communication schemes. An optional battery with a preset timer provides redundant control if electrical communication is lost during operations. After the electrical release signal is sent, the motor activates the release mechanism, enabling the device to separate, even with significant residual tension on the toolstring. Completion of rigorous qualification testing was necessary to confirm performance for the heavy load requirements and high shock levels characteristic of long perforating toolstrings. The new electrical release device has delivered flawless performance in seemingly impossible well programs. In field cases, the device was the optimal answer in providing a secondary release device that is high functioning in the harsh perforating environment. One case presents the completion of a project that involved the collaboration of six product lines. The release device was used with coiled tubing deployment of extremely long gun strings in a reservoir containing high H2S and CO2 content. The device enabled a significant reduction in the number of coiled tubing runs, which resulted in a significant increase in operational efficiency. Another application enabled the conveyance of large gun strings using wireline, which reduced the number of descents required and saved valuable time for the operator. These well programs were successfully completed because of the extreme engineering qualification achieved. For example, surface integration testing involved a maximum allowable gun string of more than 120 ft in a well to model downhole exposure. If this trend continues, it is possible that this device will change the future of wireline perforating operations. The new controllable electrical release device with exceptional strength enables the deployment of heavy tools and long guns on both coiled tubing and wireline. This will lead to efficiencies in well design as well as optimization and a higher standard in wireline perforating operations.

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Next-Generation Release Device: Strong, Safer, Efficient, and Rigorously Qualified

Sheiretov

Elstrop

et al. 2018

Day 1 Tue, March 27, 2018

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Docking Perforating System with Integrated Real Time Downhole Measurements

Guedes

Benavides

Baumann

et al. 2019

Day 2 Wed, March 27, 2019

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This paper presents field results of the first well perforating system integrated with a depth correlation and real time high-speed measurements device, this tool acquires and transmits downhole data to surface in real time while perforating. The docking gun system with plug-in design improves operational safety, efficiency and reliability, whereas downhole measurements help to obtain maximum well productivity by providing real-time downhole wellbore pressure, transient dynamic underbalance and/or overbalance for perforation cleanup and/or well stimulation. The new perforating system consists of two main components: a docking gun system and an advanced measurements module. The docking gun system consists of a compact, plug-in, radio frequency safe, addressable firing system for single and multi-zone sequential perforating applications. The system eliminates port plugs and wellsite arming of detonators, reducing human error and improving overall safety, efficiency, and reliability. The advanced measurements module provides high-frequency transient wellbore pressure, peak acceleration amplitude, and low frequency pressure, temperature, gamma ray, and active casing collar locator. These measurements enable real time confirmation of downhole conditions before, during, and after perforating, with accurate depth correlation even in high chrome tubulars and large casing sizes. This instrumented docking gun system delivered an outstanding field performance, adding value to operators by increasing safety, efficiency and reliability, while at the same time maximizing productivity. This instrumented gun system can be deployed with wireline, tractor or electrical coil tubing. The new docking gun system design reduces human error and the risk of wellsite accidents and failures. With this system we also maximize gun length deployment per run and operational efficiency. In addition, real time downhole measurements of low- and high-frequency wellbore pressure allow optimization of perforating cleanup and stimulation, maximizing productivity and reducing the overall cost per barrel produced.

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Under Pressure Perforating Deployment System Leads to a Six-Fold Reduction in Wireline Runs and a Three-Fold Reduction of Rig Time

Hillier

Guedes

Baumann

et al. 2019

Day 2 Wed, March 27, 2019

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The perforating deployment system significantly reduces rig time while maximizing the perforation length per run as compared with traditional systems, both on land and offshore, for rig or rigless interventions with very limited rig-up height. In limited rig-up height interventions, such as installations with short rig-up height or small cranes, to perforate long intervals it is necessary to use multiple short gun runs. To reduce the number of runs, short gun subassemblies are connected using a sealed ballistic transfer connector. The sealed ballistic transfer connector provides surface wellhead pressure containment sealing capability within the gunstring while also ensuring downhole ballistic transfer between guns subassemblies and the added value of optimizing perforating underbalance conditions. There is no limit on the number of sealed ballistic transfer connectors that can be used in one string. The sealed ballistic transfer connector allows deployment and reverse deployment under pressure in wells up to 103 Mpa, and it is qualified for H2S environments. The application of this technology allows significant rig-time savings and reduces personnel exposure via a remote operational console that enables personnel to connect and disconnect the guns under pressure from a safer distance. To date many jobs have been completed with this proven technology. One example presented in this paper is a horizontal well perforated from an offshore installation with an extremely short rig-up height, where there was only 16 m available to deploy wireline toolstrings. The limited height meant that a conventional wireline with tractor would allow deploying only a single 6-m-long gun carrier per trip. Using sealed ballistic transfer connectors enabled a 53-m gunstring (seven 6-m and one 3-m carrier plus adaptations) to be deployed in a single run using eight sealed ballistic transfer connectors. This was a record for the deployment conditions. More than 100 deployment and reverse deployment insertions were successfully conducted during this perforating job, reducing the required number of wireline runs from 59 to 10, and saving 51 days of operation and rig time. This paper demonstrates how the integrated application of the perforating sealed ballistic transfer connector technology, tractors, and polymer-encapsulated cables can reduce time in long perforating jobs with short rig-up heights both on land and offshore. In another presented example, the operator saved days of rig time, in addition to large economic and production time savings, and also reduced the exposure of personnel to lengthy, riskier tasks.

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Expanding the Reach of Wireline Perforating

Cited by 5 publications

References 4 publications

Next-Generation Release Device: Strong, Safer, Efficient, and Rigorously Qualified

Next-Generation Release Device: Strong, Safer, Efficient, and Rigorously Qualified

Docking Perforating System with Integrated Real Time Downhole Measurements

Under Pressure Perforating Deployment System Leads to a Six-Fold Reduction in Wireline Runs and a Three-Fold Reduction of Rig Time

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