An Operator's View of the Choices for Deepwater Intervention

Browning, Greg; Moss, Jeff H.

doi:10.2118/99151-ms

All Days 2006

DOI: 10.2118/99151-ms

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An Operator's View of the Choices for Deepwater Intervention

Greg Browning

Jeff H. Moss

Abstract: TX 75083-3836,U.S.A., fax 1.972.952.9435. AbstractWell thought out concept selection is critical in developing a future deepwater intervention system that will be both technically and commercially successful. Short term solutions that are developed for part-time usage may get by but should eventually lose out to systems designed for full utilization. This paper will address critical concept issues and provide one Operator's recommendations for long term success.

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Cited by 3 publications

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Coiled-Tubing Intervention and Drilling System Using Cost-Effective Vessels

2010

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Deep water and ultra deep water intervention of wet trees has been a huge challenge for oil and gas producers. Currently, the only realistic way to do intervention is to use a conventional Mobile Offshore Drilling Unit (MODU) or intervention vessel (which is usually a smaller MODU) whether for a simple clean out or re-completing another producing interval. This is an extremely costly venture and the intervention is only scheduled when the economics of the operation are clearly justified.And even when the intervention is approved there is the problem of scheduling a MODU or intervention vessel. Sometimes the intervention can take months before a MODU or intervention vessel is available.There is a new enabling technology, using a Self Standing Riser, (SSR), where a coiled tubing intervention and drilling system could be deployed by a cost effective vessel (not a conventional MODU) with all the coiled tubing and related equipment on the vessel. The SSR design is such that it would attach to the subsea tree and provide the support and a circulation conduit for the coiled tubing to have full circulation capabilities back to the intervention vessel. The vessel, itself, would have station keeping capabilities for a significant period of weather conditions for the Gulf of Mexico. This paper presents the reasons why conventional and subsea coiled tubing approaches have been unable to provide a economically workable solution for coiled tubing intervention and drilling from wet trees in deep water. The paper describes a new system based on a SSR and a cost effective vessel (non MODU) design that could accommodate the coiled tubing equipment, and provide station keeping and support for the operations. The paper will discuss safety issues such as: the reliability and safety of the SSR, well control issues, emergency disconnects, and the event of a drive off by the vessel.Unless, this type of technology is developed and deployed millions of barrels of barrels of oil and gas will remain behind pipe. In other cases, some fields will not be developed because the need for on-going intervention coupled with high capital costs that will not meet the economic threshold to commission the development. 2 SPE 130688

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Coiled-Tubing Intervention and Drilling System Using Cost-Effective Vessels

2010

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The Sensor Ball Revolutionizes Wireline Operations

Al-Hajri

Ureiga

Javed

et al. 2022

Day 1 Mon, October 31, 2022

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This paper will share production engineering perspectives on the deployment of the sensor ball technology. The sensor ball is a new integrated production logging platform that was developed to measure primarily wellbore downhole pressure and temperature. The reduction in size of the innovative tool sensors has enabled packing of the tool in an attractive wireless manner. The sensor ball records wellbore data and stores collected data on electronic memory chips. The scope of this paper is to explain the working mechanism of the technology and outline the proper methodology for deployment by recapping the operational events of a successful sensor ball field trials on two water wells. The sensor ball is deployed and collected from the wellhead tree cap in a carefully designed sequence of operational steps to ensure no damage to the tool or tree valves can take place. The sensor ball has dissolvable weight element that allows for the tool to descend to the target measurement depth. The tool is made from material, with a specific density, that allows for buoyancy floating in water after the release of dissolvable weight. Conventional wireline gradient pressure and temperature surveys preceded the sensor ball runs during the trial phase. The objective of the wireline surveys is to provide a basis that qualifies the sensor ball data and quantifies its accuracy with respect to gauge measurements. The developed field trial test success criteria were: Successful mechanical deployment/retrieval of the sensor ball within programmed timeComplete data recovery from the sensor ball upon retrievalAccuracy of recovered data compared to wireline surveys below 5% average absolute error The comparison results of the sensor ball and wireline data at both water wells showed consistency and accuracy. The average absolute error was less than 3 % for pressure and temperature data. Further, the field trial has met all developed success criteria. The deployment of the sensor ball technology by oilfield operators will enable realization of several tangible benefits such as reducing acquisition time of downhole data compared to wireline and reducing manpower requirements for pressure and temperature surveys. The sensor ball enhancement to manpower requirement can allow for simultaneous data acquisition operations that were not possible with wireline surveys. Oilfield operators can avoid direct costs related to wireline units and associated equipment and its maintenance. Further, the typical mechanical risks associated with well intervention can be eliminated by deploying the sensor ball technology.

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New Innovative Cost-Effective Methodology of Conducting Wells Surveillance Activities

Al‐Ghamdi

Alsana

Yateem

et al. 2023

Day 4 Thu, May 04, 2023

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Objective/Scope This paper describes the second phase of sensor ball to retrieve production parameters downhole an oil well. Data retrieved from the sensor ball was compared to the conventional methodology; i.e. slickline. The paper also explains the advantages of using the sensor ball compared to the utilization of heavy equipment and the interlinked logistics and manpower. Methods, Procedures, Process Pressure and temperature surveys are required to measure the changes in the reservoir pressure and provide an image of the well downhole conditions especially for tubing and casing integrities. Conventional methodology of carrying out a basic surveillance activity for pressure and temperature surveys is through slickline work. A new breakthrough technology that was developed is the sensor ball, that is being used as a vehicle traveling downhole of the well logging data, such as pressure, temperature, casing collar locators and others under development. The second generation of the sensor ball has been successfully trial tested in live wells by dropping the ball freefalling then retrieved back to the surface. Results, Observations, Conclusions Data were retrieved, then crossed check with slickline data ran in the same well. This technology will provide great cost saving, especially on expensive offshore resources, avoiding the need for the barge to carry out simple jobs that can be replaced by the sensor ball, Moreover, the technology will be utilized to eliminate the risk of slickline activities. In this paper, technology, methodology field trial data will be shared with the rest of the industry. Novel/Additive Information This industrial revolution IR 4.0 technology is of paramount importance to the oil and gas industry. The easiness of the conveyance method will result in efficient and timely well surveillance. Therefore, the water cut of the oil wells can be controllable along with other parameters such as gas oil ratio.

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An Operator's View of the Choices for Deepwater Intervention

Cited by 3 publications

References 0 publications

Coiled-Tubing Intervention and Drilling System Using Cost-Effective Vessels

Coiled-Tubing Intervention and Drilling System Using Cost-Effective Vessels

The Sensor Ball Revolutionizes Wireline Operations

New Innovative Cost-Effective Methodology of Conducting Wells Surveillance Activities

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