Successful Isolation of a Water Contribution Zone Using Fiber Optic Telemetry Enabled Coiled Tubing Conveyed Inflatable Packer Capped with Cement (Case Study)

Shawly, Alaa S.; Dashash, Alaa A.; Khateeb, Bander F.; Muhammadi, Ahmed H.; Bugrov, Vsevolod; Kharrat, Wassim; Bolarinwa, Simeon

doi:10.2118/136948-ms

Cited by 5 publications

References 1 publication

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Utilizing Fiber Optic Enabled Coil Tubing Telemetry in Extended Reach Horizontal Well Mechanical Rigless Water Shut-Off (WSO) Operation (Case Study)

et al. 2011

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In many fields, high water production can cause adverse effects on the reservoir performance, which can result in production losses. To mitigate this situation, it is crucial to utilize water management to reduce water production, optimize oil production, increase the well life and revive dead wells. One of the options is utilizing a workover rig to isolate the water entry zone by running swellable or inflatable packers. This option is costly and time consuming, taking into consideration the time required to prepare the location for the rig, stripping out and returning back flowline and cleaning wells prior returning to production. To overcome this challenge, it was essential to look for an alternative solution that requires less time and cost. One of those solutions is isolating the water producing zone by rigless water shut-off (WSO), using mechanical isolation. This kind of operation is more challenging for extended reach horizontal wells. This paper highlights the mechanical rigless WSO method used to mechanically isolate a water contribution zone by utilizing fiber optic enabled coiled tubing (FOECT) telemetry and setting an inflatable packer combined with a capped with cement. This successful WSO treatment positively impacted the overall performance of a dead horizontal oil producer with 4,000 ft of reservoir contact. The WSO resulted in decreasing the water cut from 68% to 0%, and revived the dead well with 10 thousand barrels per day (MBOD) oil gain. Real-time downhole temperature, pressure (inside and outside the coil tubing) and casing collar locator (CCL) measurements, obtained by FOECT was utilized to get accurate packer setting depth, confirm packer setting and ensure the suitability of cement recipe slurry design. The whole cycle of candidate selection, job design, execution challenges, post job evaluation, lessons learned and the experience gained to optimize the similar future jobs are covered in this paper.

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Utilizing Fiber Optic Enabled Coil Tubing Telemetry in Extended Reach Horizontal Well Mechanical Rigless Water Shut-Off (WSO) Operation (Case Study)

et al. 2011

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Dead Horizontal Well Revival Utilizing Fiber-Optic Enabled Coiled Tubing Combined with Underbalance Perforating Gun Deployment Technique (Case Study)

Burov

Al-Otaibi

Al-Sultan

et al. 2012

Abu Dhabi International Petroleum Conference and Exhibition

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In many oil fields water production often threatens the reservoir performance and economic viability of wells. Excess unwanted water production can cause an increase in production costs and a decrease in productivity. To mitigate this, it is crucial to utilize water management techniques to reduce water cut (WC), optimize oil production, extend the well life and recover idle wells. The most effective technique for water shut off (WSO) treatments in Saudi Arabia comparatively to the costly workover rig treatments was proved to be a rigless WSO using mechanical isolation especially when it gives options to perform additional operations with the single rigup. This paper describes the first time — in Saudi Arabia — implementation of the mechanical rigless WSO method, used to mechanically isolate a watered open hole section. This isolation is accomplished by utilizing fiber optic enabled coiled tubing (FOECT) telemetry and then setting an inflatable packer in the liner. It is capped with cement following perforation treatment, by using a completion insertion and retrieval under pressure (CIRP) deployment system, which allowed the guns to be run and pulled under live well conditions without killing the well. The depth correlation for the packer setting — and later for perforation depth correlation — was performed by fiber optic bottom-hole assembly (FOBHA-GR). The inflation of the packer and the injection through it were monitored and adjusted realtime with the FOBHA-Pressure - Temperature - Casing Collar Locator (FOBHA-PTC) measurement inside and outside the FOCT string. FOBHA utilize deployment method from CIRP technology to perforate the new formation by using the TCP E-Fire firing head under well dynamic underbalanced conditions. Recent production results showed a previously dead well flowed at 10 thousand barrels per day oil rate with 12% water cut. This innovative combination of WSO solution with FOECT and CIRP techniques proved to be an effective method to minimize operational time, equipment and footprint on location, and efficient perforating in a single underbalance run at one rigup. This paper also discusses the challenges faced during job execution, lessons learned, and experience gained to optimize similar jobs in the future.

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Comprehensive Diagnostic and Water Shut-off in Open and Cased Hole Carbonate Horizontal Wells

Al-Shabibi

Ahmad

Zeybek

et al. 2012

Abu Dhabi International Petroleum Conference and Exhibition

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Increases in water production can significantly reduce well performance and life of a well, and cause decreased oil production. Water influx can occur through several mechanisms and approach from several directions; accurate diagnostic information is important for the design of successful shutoffs and effective results. To mitigate this situation, water management is crucial. One option is to isolate the water producing zone with a rigless water shut-off technique, which is less costly than the use of workover rigs for interventions. This paper presents case histories of five horizontal wells drilled in carbonate formations and producing excess water; three were completed in open hole and two were cased. A multiphase production logging (MPL) tool equipped with five miniaturized spinners for phase velocity measurement and six electrical and six optical probes for holdup data provided important diagnostic data for the decisions on remedial actions. Using the tool data, the operator pinpointed the water entries and performed shutoff operations based on the source of the entries and water flow profiles. Subsequent production test results showed that the water cut was reduced in all the wells. Examples from open and cased hole completions are shown utilizing a number of different shutoff techniques. In addition, oil production was considerably increased in many of the wells. These results demonstrate that accurate diagnostic information and an integrated approach are keys to successful rigless water shutoffs.

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Successful Isolation of a Water Contribution Zone Using Fiber Optic Telemetry Enabled Coiled Tubing Conveyed Inflatable Packer Capped with Cement (Case Study)

Cited by 5 publications

References 1 publication

Utilizing Fiber Optic Enabled Coil Tubing Telemetry in Extended Reach Horizontal Well Mechanical Rigless Water Shut-Off (WSO) Operation (Case Study)

Utilizing Fiber Optic Enabled Coil Tubing Telemetry in Extended Reach Horizontal Well Mechanical Rigless Water Shut-Off (WSO) Operation (Case Study)

Dead Horizontal Well Revival Utilizing Fiber-Optic Enabled Coiled Tubing Combined with Underbalance Perforating Gun Deployment Technique (Case Study)

Comprehensive Diagnostic and Water Shut-off in Open and Cased Hole Carbonate Horizontal Wells

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