FISHING WITH THE AGITATOR SYSTEM
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1 FISHING WITH THE AGITATOR SYSTEM Downhole Solutions PROVEN PERFORMANCE IN FISHING OPERATIONS The Agitator System provides an incredibly effective new patented capability to free objects stuck downhole, such as drilling BHAs, cleanout assemblies, casing, liners, electric submersible pumps, and gravel packed sand screens. Drilling Solutions Conventional fishing BHA s and fishing techniques to recover lost BHA s or other stuck objects downhole are generally limited to either applying overpull or jarring to free the object. When added to the Fishing BHA, the Agitator System provides an additional loosening action which can greatly improve the likelihood of retrieving the stuck object: Axial oscillating motion. This functionality is complementary to the Fishing Jar, and both are used in the process of freeing the stuck object. Whereas jarring generates a large single impact force, the Agitator System generates a smaller force, but at a much higher frequency. By inducing an oscillating motion in the stuck object, it loosens the contact with the formation and helps to literally wiggle it free. Engineering and Project Management Solutions Corporate Headquarters 79 Parkwood Circle Drive Houston, Texas 7706 United States Phone: Fax: FISHING APPLICATIONS: Industrial Solutions Reference Technical Papers: SPE For a complete list of NOV Downhole locations, visit us online: IADC/SPE SPE MS SPE-SAS-7 IBP59_1 Lifting and Handling Solutions Production Solutions Supply Chain Solutions Jar Freqency 1 blow/minute Agitator Frequency 10 blows/minute (e.g. at Hz) Time and Impact are shown on different scales on each chart for visual clarity Significantly increase the rate of success for retrieval of stuck objects Reduce rig Non-Productive Time (NPT) Eliminate need for expensive cementing & sidetracking operations Recovery of BHA strings, casing, gravel packed sand screens, submersible pumps, etc. Reduce Lost-In-Hole costs Make other downhole operations possible, by retrieving stuck objects National Oilwell Varco has produced this brochure for general information only, and it is not intended for design purposes. Although every effort has been made to maintain the accuracy and reliability of its contents, National Oilwell Varco in no way assumes responsibility for liability for any loss, damage or injury resulting from the use of information and data herein. All applications for the material described are at the user s risk and are the user s responsibility. Tubular and Corrosion Control Solutions Well Service and Completion Solutions One Company... Unlimited Solutions d o w n ho le@ n o v.c o m w w w. n o v. c o m 14 National Oilwell Varco. All Rights Reserved. D MKT-001 Rev.06 Bottom-Hole Assemblies (BHAs) Casing Pulling Stuck Casing Gravel Packed Sand Screens Electric Submersible Pumps and more
2 The Agitator System Casing Pulling Plug & Abandon, Slot Retrieval, Stuck Casing Fishing of stuck pipe Drilling BHAs, cleanout assemblies, etc. The Agitator System is composed of two tools: Agitator Tool generates pressure pulses Griffith Shock Tool converts pressure pulses into axial motion As part of the Fishing BHA, the Agitator System generates an axial oscillating motion (cyclical tension) to help free the stuck object. This oscillating motion is activated by circulation of the wellbore fluid: as the wellbore fluid is circulated, the Agitator tool generates a pressure pulse wave. This pressure wave enters the shock tool and acts on the piston area within the tool, stroking the shock tool. This axial (along the pipe, not side-to-side) oscillating motion is transmitted through the catch tool to the stuck object, helping to vibrate it loose. Features: Easily integrated into Fishing BHA Can be used with standard NOV fishing equipment: Catch Tools, Jar, Intensifier, Bumper Sub, Safety Joint, etc. Available at most NOV service locations worldwide 5 (High Flow) 6-1/ 6-/ /8 Overall Length 15.4 ft ft. Series 148 = 18.4 ft Series 160 = 1.5 ft 1.8 ft. Weight 85 lbs 9 lbs 1,700 lbs 1,850 lbs,500 lbs 4,0 lbs Flow Range* (-0 gpm) (-0 gpm) gpm gpm 500-1,000 gpm 600-1,100 gpm Max Temperature** Operating Frequency gpm gpm gpm (16-17 gpm) (16-17 gpm) gpm gpm gpm Operational Pressure Drop Generated*** Max Pull to Yield Agitator/ Shock Tool 60,000 lbs 60,000 lbs Series 148 = 770,000 lbs Series 160 = 87,000 lbs 1,145,000 lbs Series 148 = 61, lbs Series 160 = 54, lbs 8,500 lbs Series 148 = 15,000 lbs Series 160 = 15,000 lbs Max Pull for Max Weight for 61, lbs 61, lbs The Agitator System has been used successfully in dozens of casing pulling runs, in various sizes. The Agitator System in integrated into the Casing Retrieval BHA, incorporating a circulating sub to allow circulation above the spear and packoff assembly. The Agitator System has also been used at surface, to retrieve casing which became differentially stuck while being run into the drilled wellbore. The Agitator System has been used successfully in dozens of fishing jobs with a high rate of success, even in applications where conventional fishing attempts over several days had been unsuccessful. The system is proven to greatly increase the likelihood of BHA retrieval in difficult conditions. Success with 9 5/8 Casing Pulling - StatoilHydro, Norway, Q1 1: sticking/pack-offs/stuck in cuttings Gentle oscillation of stuck BHA reduces friction Improves overpull transfer from surface Turns static sticking into dynamic sticking Increases sliding ROP in drilling applications Improves toolface control & reduces Stick-slip Extends step-out capability Significantly improves directional control Well Profile 00 74ft BHA/Fish Comments Conventional attempts unsuccessful to pull casing. Agitator System employed and casing was successfully retrieved Pulled casing with conventional overpull and jarring, however got stuck on the way out and then used the Agitator System to successfully free casing ¾ Fishing Agitator and Bowen Super Fishing Jar recover RSS Directional BHA in highly deviated 6 1/8 hole in 1 hour, after being stuck for 1.7 days Success in Saudi Arabia, Q4 Fishing BHA used: 000 StatoilHydro had a very positive experience from the use of the Agitator System on Gullfaks B. The verification came after the first trial when pulling and jarring had shown no progress. The Agitator System was then operated and the fish came free. The Agitator System was thereafter included in all the following pulling operations in B-14A. Lead Drilling Engineer, StatoilHydro 4000 NOV Engineering can provide recommendation for flow rate to maximize loosening effect on the stuck object. ** Higher temperature ratings are available upon request. Length (m) Overpull Without Overpull With Jarring Reach (ft) * Interval (m) Note: the Agitator System can also be used while drilling, to prevent differential Depth (ft) 4-/4 (High Flow) Tool Size (OD) Significant cost savings can be realized by retrieving casing from P&A wells Conventional overpull and jarring has limited effectiveness in retrieving casing Stuck BHAs are a costly problem, causing significant NPT (Non-Productive Time) Expensive Lost-In-Hole charges and the additional costs of cementing and sidetracking Differential sticking / mechanical sticking / pack-offs / stuck in cuttings Challenging well profiles Well Diagram according to Survey Data *** Actual operational pressure drop will depend on flow rate. This can be estimated in pre-job planning. 5-/4 OVERSHOT + 4-/4 BUMPER SUB + 4-/4 SUPER FISHING JAR + x 4-/4 DC + 4-/4 INTENSIFIER + 1 x 4-/4 DC + 4-/4 AGITATOR SYSTEM + x 4-/4 DC + x 4 HWDP Fishing BHA arrangement will vary based on the application contact NOV for pre-job planning
3 The Agitator System Casing Pulling Plug & Abandon, Slot Retrieval, Stuck Casing Fishing of stuck pipe Drilling BHAs, cleanout assemblies, etc. The Agitator System is composed of two tools: Agitator Tool generates pressure pulses Griffith Shock Tool converts pressure pulses into axial motion As part of the Fishing BHA, the Agitator System generates an axial oscillating motion (cyclical tension) to help free the stuck object. This oscillating motion is activated by circulation of the wellbore fluid: as the wellbore fluid is circulated, the Agitator tool generates a pressure pulse wave. This pressure wave enters the shock tool and acts on the piston area within the tool, stroking the shock tool. This axial (along the pipe, not side-to-side) oscillating motion is transmitted through the catch tool to the stuck object, helping to vibrate it loose. Features: Easily integrated into Fishing BHA Can be used with standard NOV fishing equipment: Catch Tools, Jar, Intensifier, Bumper Sub, Safety Joint, etc. Available at most NOV service locations worldwide 5 (High Flow) 6-1/ 6-/ /8 Overall Length 15.4 ft ft. Series 148 = 18.4 ft Series 160 = 1.5 ft 1.8 ft. Weight 85 lbs 9 lbs 1,700 lbs 1,850 lbs,500 lbs 4,0 lbs Flow Range* (-0 gpm) (-0 gpm) gpm gpm 500-1,000 gpm 600-1,100 gpm Max Temperature** Operating Frequency gpm gpm gpm (16-17 gpm) (16-17 gpm) gpm gpm gpm Operational Pressure Drop Generated*** Max Pull to Yield Agitator/ Shock Tool 60,000 lbs 60,000 lbs Series 148 = 770,000 lbs Series 160 = 87,000 lbs 1,145,000 lbs Series 148 = 61, lbs Series 160 = 54, lbs 8,500 lbs Series 148 = 15,000 lbs Series 160 = 15,000 lbs Max Pull for Max Weight for 61, lbs 61, lbs The Agitator System has been used successfully in dozens of casing pulling runs, in various sizes. The Agitator System in integrated into the Casing Retrieval BHA, incorporating a circulating sub to allow circulation above the spear and packoff assembly. The Agitator System has also been used at surface, to retrieve casing which became differentially stuck while being run into the drilled wellbore. The Agitator System has been used successfully in dozens of fishing jobs with a high rate of success, even in applications where conventional fishing attempts over several days had been unsuccessful. The system is proven to greatly increase the likelihood of BHA retrieval in difficult conditions. Success with 9 5/8 Casing Pulling - StatoilHydro, Norway, Q1 1: sticking/pack-offs/stuck in cuttings Gentle oscillation of stuck BHA reduces friction Improves overpull transfer from surface Turns static sticking into dynamic sticking Increases sliding ROP in drilling applications Improves toolface control & reduces Stick-slip Extends step-out capability Significantly improves directional control Well Profile 00 74ft BHA/Fish Comments Conventional attempts unsuccessful to pull casing. Agitator System employed and casing was successfully retrieved Pulled casing with conventional overpull and jarring, however got stuck on the way out and then used the Agitator System to successfully free casing ¾ Fishing Agitator and Bowen Super Fishing Jar recover RSS Directional BHA in highly deviated 6 1/8 hole in 1 hour, after being stuck for 1.7 days Success in Saudi Arabia, Q4 Fishing BHA used: 000 StatoilHydro had a very positive experience from the use of the Agitator System on Gullfaks B. The verification came after the first trial when pulling and jarring had shown no progress. The Agitator System was then operated and the fish came free. The Agitator System was thereafter included in all the following pulling operations in B-14A. Lead Drilling Engineer, StatoilHydro 4000 NOV Engineering can provide recommendation for flow rate to maximize loosening effect on the stuck object. ** Higher temperature ratings are available upon request. Length (m) Overpull Without Overpull With Jarring Reach (ft) * Interval (m) Note: the Agitator System can also be used while drilling, to prevent differential Depth (ft) 4-/4 (High Flow) Tool Size (OD) Significant cost savings can be realized by retrieving casing from P&A wells Conventional overpull and jarring has limited effectiveness in retrieving casing Stuck BHAs are a costly problem, causing significant NPT (Non-Productive Time) Expensive Lost-In-Hole charges and the additional costs of cementing and sidetracking Differential sticking / mechanical sticking / pack-offs / stuck in cuttings Challenging well profiles Well Diagram according to Survey Data *** Actual operational pressure drop will depend on flow rate. This can be estimated in pre-job planning. 5-/4 OVERSHOT + 4-/4 BUMPER SUB + 4-/4 SUPER FISHING JAR + x 4-/4 DC + 4-/4 INTENSIFIER + 1 x 4-/4 DC + 4-/4 AGITATOR SYSTEM + x 4-/4 DC + x 4 HWDP Fishing BHA arrangement will vary based on the application contact NOV for pre-job planning
4 The Agitator System Casing Pulling Plug & Abandon, Slot Retrieval, Stuck Casing Fishing of stuck pipe Drilling BHAs, cleanout assemblies, etc. The Agitator System is composed of two tools: Agitator Tool generates pressure pulses Griffith Shock Tool converts pressure pulses into axial motion As part of the Fishing BHA, the Agitator System generates an axial oscillating motion (cyclical tension) to help free the stuck object. This oscillating motion is activated by circulation of the wellbore fluid: as the wellbore fluid is circulated, the Agitator tool generates a pressure pulse wave. This pressure wave enters the shock tool and acts on the piston area within the tool, stroking the shock tool. This axial (along the pipe, not side-to-side) oscillating motion is transmitted through the catch tool to the stuck object, helping to vibrate it loose. Features: Easily integrated into Fishing BHA Can be used with standard NOV fishing equipment: Catch Tools, Jar, Intensifier, Bumper Sub, Safety Joint, etc. Available at most NOV service locations worldwide 5 (High Flow) 6-1/ 6-/ /8 Overall Length 15.4 ft ft. Series 148 = 18.4 ft Series 160 = 1.5 ft 1.8 ft. Weight 85 lbs 9 lbs 1,700 lbs 1,850 lbs,500 lbs 4,0 lbs Flow Range* (-0 gpm) (-0 gpm) gpm gpm 500-1,000 gpm 600-1,100 gpm Max Temperature** Operating Frequency gpm gpm gpm (16-17 gpm) (16-17 gpm) gpm gpm gpm Operational Pressure Drop Generated*** Max Pull to Yield Agitator/ Shock Tool 60,000 lbs 60,000 lbs Series 148 = 770,000 lbs Series 160 = 87,000 lbs 1,145,000 lbs Series 148 = 61, lbs Series 160 = 54, lbs 8,500 lbs Series 148 = 15,000 lbs Series 160 = 15,000 lbs Max Pull for Max Weight for 61, lbs 61, lbs The Agitator System has been used successfully in dozens of casing pulling runs, in various sizes. The Agitator System in integrated into the Casing Retrieval BHA, incorporating a circulating sub to allow circulation above the spear and packoff assembly. The Agitator System has also been used at surface, to retrieve casing which became differentially stuck while being run into the drilled wellbore. The Agitator System has been used successfully in dozens of fishing jobs with a high rate of success, even in applications where conventional fishing attempts over several days had been unsuccessful. The system is proven to greatly increase the likelihood of BHA retrieval in difficult conditions. Success with 9 5/8 Casing Pulling - StatoilHydro, Norway, Q1 1: sticking/pack-offs/stuck in cuttings Gentle oscillation of stuck BHA reduces friction Improves overpull transfer from surface Turns static sticking into dynamic sticking Increases sliding ROP in drilling applications Improves toolface control & reduces Stick-slip Extends step-out capability Significantly improves directional control Well Profile 00 74ft BHA/Fish Comments Conventional attempts unsuccessful to pull casing. Agitator System employed and casing was successfully retrieved Pulled casing with conventional overpull and jarring, however got stuck on the way out and then used the Agitator System to successfully free casing ¾ Fishing Agitator and Bowen Super Fishing Jar recover RSS Directional BHA in highly deviated 6 1/8 hole in 1 hour, after being stuck for 1.7 days Success in Saudi Arabia, Q4 Fishing BHA used: 000 StatoilHydro had a very positive experience from the use of the Agitator System on Gullfaks B. The verification came after the first trial when pulling and jarring had shown no progress. The Agitator System was then operated and the fish came free. The Agitator System was thereafter included in all the following pulling operations in B-14A. Lead Drilling Engineer, StatoilHydro 4000 NOV Engineering can provide recommendation for flow rate to maximize loosening effect on the stuck object. ** Higher temperature ratings are available upon request. Length (m) Overpull Without Overpull With Jarring Reach (ft) * Interval (m) Note: the Agitator System can also be used while drilling, to prevent differential Depth (ft) 4-/4 (High Flow) Tool Size (OD) Significant cost savings can be realized by retrieving casing from P&A wells Conventional overpull and jarring has limited effectiveness in retrieving casing Stuck BHAs are a costly problem, causing significant NPT (Non-Productive Time) Expensive Lost-In-Hole charges and the additional costs of cementing and sidetracking Differential sticking / mechanical sticking / pack-offs / stuck in cuttings Challenging well profiles Well Diagram according to Survey Data *** Actual operational pressure drop will depend on flow rate. This can be estimated in pre-job planning. 5-/4 OVERSHOT + 4-/4 BUMPER SUB + 4-/4 SUPER FISHING JAR + x 4-/4 DC + 4-/4 INTENSIFIER + 1 x 4-/4 DC + 4-/4 AGITATOR SYSTEM + x 4-/4 DC + x 4 HWDP Fishing BHA arrangement will vary based on the application contact NOV for pre-job planning
5 FISHING WITH THE AGITATOR SYSTEM Downhole Solutions PROVEN PERFORMANCE IN FISHING OPERATIONS The Agitator System provides an incredibly effective new patented capability to free objects stuck downhole, such as drilling BHAs, cleanout assemblies, casing, liners, electric submersible pumps, and gravel packed sand screens. Drilling Solutions Conventional fishing BHA s and fishing techniques to recover lost BHA s or other stuck objects downhole are generally limited to either applying overpull or jarring to free the object. When added to the Fishing BHA, the Agitator System provides an additional loosening action which can greatly improve the likelihood of retrieving the stuck object: Axial oscillating motion. This functionality is complementary to the Fishing Jar, and both are used in the process of freeing the stuck object. Whereas jarring generates a large single impact force, the Agitator System generates a smaller force, but at a much higher frequency. By inducing an oscillating motion in the stuck object, it loosens the contact with the formation and helps to literally wiggle it free. Engineering and Project Management Solutions Corporate Headquarters 79 Parkwood Circle Drive Houston, Texas 7706 United States Phone: Fax: FISHING APPLICATIONS: Industrial Solutions Reference Technical Papers: SPE For a complete list of NOV Downhole locations, visit us online: IADC/SPE SPE MS SPE-SAS-7 IBP59_1 Lifting and Handling Solutions Production Solutions Supply Chain Solutions Jar Freqency 1 blow/minute Agitator Frequency 10 blows/minute (e.g. at Hz) Time and Impact are shown on different scales on each chart for visual clarity Significantly increase the rate of success for retrieval of stuck objects Reduce rig Non-Productive Time (NPT) Eliminate need for expensive cementing & sidetracking operations Recovery of BHA strings, casing, gravel packed sand screens, submersible pumps, etc. Reduce Lost-In-Hole costs Make other downhole operations possible, by retrieving stuck objects National Oilwell Varco has produced this brochure for general information only, and it is not intended for design purposes. Although every effort has been made to maintain the accuracy and reliability of its contents, National Oilwell Varco in no way assumes responsibility for liability for any loss, damage or injury resulting from the use of information and data herein. All applications for the material described are at the user s risk and are the user s responsibility. Tubular and Corrosion Control Solutions Well Service and Completion Solutions One Company... Unlimited Solutions d o w n ho le@ n o v.c o m w w w. n o v. c o m 14 National Oilwell Varco. All Rights Reserved. D MKT-001 Rev.06 Bottom-Hole Assemblies (BHAs) Casing Pulling Stuck Casing Gravel Packed Sand Screens Electric Submersible Pumps and more
6 FISHING WITH THE AGITATOR SYSTEM Downhole Solutions PROVEN PERFORMANCE IN FISHING OPERATIONS The Agitator System provides an incredibly effective new patented capability to free objects stuck downhole, such as drilling BHAs, cleanout assemblies, casing, liners, electric submersible pumps, and gravel packed sand screens. Drilling Solutions Conventional fishing BHA s and fishing techniques to recover lost BHA s or other stuck objects downhole are generally limited to either applying overpull or jarring to free the object. When added to the Fishing BHA, the Agitator System provides an additional loosening action which can greatly improve the likelihood of retrieving the stuck object: Axial oscillating motion. This functionality is complementary to the Fishing Jar, and both are used in the process of freeing the stuck object. Whereas jarring generates a large single impact force, the Agitator System generates a smaller force, but at a much higher frequency. By inducing an oscillating motion in the stuck object, it loosens the contact with the formation and helps to literally wiggle it free. Engineering and Project Management Solutions Corporate Headquarters 79 Parkwood Circle Drive Houston, Texas 7706 United States Phone: Fax: FISHING APPLICATIONS: Industrial Solutions Reference Technical Papers: SPE For a complete list of NOV Downhole locations, visit us online: IADC/SPE SPE MS SPE-SAS-7 IBP59_1 Lifting and Handling Solutions Production Solutions Supply Chain Solutions Jar Freqency 1 blow/minute Agitator Frequency 10 blows/minute (e.g. at Hz) Time and Impact are shown on different scales on each chart for visual clarity Significantly increase the rate of success for retrieval of stuck objects Reduce rig Non-Productive Time (NPT) Eliminate need for expensive cementing & sidetracking operations Recovery of BHA strings, casing, gravel packed sand screens, submersible pumps, etc. Reduce Lost-In-Hole costs Make other downhole operations possible, by retrieving stuck objects National Oilwell Varco has produced this brochure for general information only, and it is not intended for design purposes. Although every effort has been made to maintain the accuracy and reliability of its contents, National Oilwell Varco in no way assumes responsibility for liability for any loss, damage or injury resulting from the use of information and data herein. All applications for the material described are at the user s risk and are the user s responsibility. Tubular and Corrosion Control Solutions Well Service and Completion Solutions One Company... Unlimited Solutions d o w n ho le@ n o v.c o m w w w. n o v. c o m 14 National Oilwell Varco. All Rights Reserved. D MKT-001 Rev.06 Bottom-Hole Assemblies (BHAs) Casing Pulling Stuck Casing Gravel Packed Sand Screens Electric Submersible Pumps and more
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