Managed Pressure Operations Internal PROJECT DOCUMENT Client: Project: 1082 RDD Equipment: Equipment tag no.: RISER DRILLING DEVICE (RDD) - Document title: SINGLE SEAL SLEEVE (7 INCH) LUBRICATED TEST RESULTS Rev.: Reason for issue: Date: Author: Checked: Approved: A Issued for Information 18.Feb.2014 SARA This document and all information and data herein or herewith is the confidential and proprietary property of Managed Pressure Operations and is not to be used, reproduced or disclosed in whole or in part by or to anyone without the written confirmation from Managed Pressure Operations. Acceptance code (Norsok): Code 1: Accepted Code 2: Accepted with comments included Project No. Document Code USN Revision No. Code 3: Not accepted, revise and resubmit 1082 DOC 10695 A Code 4: Issued for information Customer doc. no.: - Code 5: Interface information as clouded is accepted and frozen Customer p.o. no.: - Signed by: Customer revision: - Date: Total no. of pages: 20
Transcript
Managed Pressure Operations
Internal
PROJECT DOCUMENT
Client:
Project:
1082 RDD
Equipment: Equipment tag no.:
RISER DRILLING DEVICE (RDD) -
Document title:
SINGLE SEAL SLEEVE (7 INCH) LUBRICATED TEST RESULTS
Rev.: Reason for issue: Date: Author: Checked: Approved:
A Issued for Information 18.Feb.2014 SARA
This document and all information and data herein or herewith is the confidential and proprietary property of Managed Pressure Operations and is not to be used, reproduced or disclosed in whole or in part by or to anyone without the written confirmation from Managed Pressure Operations.
Acceptance code (Norsok):
Code 1: Accepted
Code 2: Accepted with comments included
Project No.
Document Code
USN Revision No. Code 3: Not accepted, revise and
resubmit
1082 DOC 10695 A Code 4: Issued for information
Customer doc. no.: - Code 5: Interface information as
clouded is accepted and frozen
Customer p.o. no.: - Signed by:
Customer revision: -
Date: Total no. of pages: 20
Managed Pressure Operations Client: MPO Project: 1082 RDD Equipment: Riser Drilling Device Date: 18.Feb.2014 Doc. no.: 1082-DOC-10695 Rev.: A Title: Single Seal Sleeve(7 Inch) Lubricated
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Rev.: Chapter: Description:
Revision History
Managed Pressure Operations Client: MPO Project: 1082 RDD Equipment: Riser Drilling Device Date: 18.Feb.2014 Doc. no.: 1082-DOC-10695 Rev.: A Title: Single Seal Sleeve(7 Inch) Lubricated
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TABLE OF CONTENTS: 1. Executive Summary ........................................................................................................... 4
3. Lubricated dynamic Rotation test on 5- 7/8” DP and 7”TJ ............................................. 5
3.1 Lubricated dynamic Rotation Test Results ................................................................................. 11
4. Stripping test on 5-7/8 DP and 7” TJ .............................................................................. 16
4.1 Stripping Test results: .................................................................................................................. 16
Managed Pressure Operations Client: MPO Project: 1082 RDD Equipment: Riser Drilling Device Date: 18.Feb.2014 Doc. no.: 1082-DOC-10695 Rev.: A Title: Single Seal Sleeve(7 Inch) Lubricated
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1. Executive Summary 1.1 Lubricated dynamic rotation test: Dynamic Rotation test carried out on 7” Single seal sleeve with 5 7/8” DP and 7” TJ by varying well bore pressure between 500 psi to 1500psi. Drill pipe rotation speed was varying between 50 to 200 rpm, and the closing pressure was adjusted to maintain a seal with a specified leak rate of 4 Lt/min and the test was carried out for a total period of 89.5 Hrs. as shown in Figure 9. The visual inspection of the Seal Sleeves after 89.5 hours of the dynamic rotation test shows that there is a negligible amount of wear on the upper and lower regions of Sleeve as shown in Figure 11 and Figure 12. 3D Laser scanning of the Seal Sleeve after the Dynamic Rotation test was shown in Figure 14 confirms the critical wearing regions. Comparison of the results shows that the top region wears more compared with the bottom region. 1.2 Stripping test: Stripping test carried out on the 7” Single seal sleeve with the 5-7/8” drill pipe and 7” tool joint with a wellbore pressure of 750 psi for about 1409 cycles and a wellbore pressure of 1000 psi for 1086 cycles. Condition of the seal sleeve after the test was shown in Figure 18 and the 3D Laser scanning results of the Seal Sleeve was shown in Figure 20. Polymer seal wears out to a magnitude of 24.3 mm at the Top region at the end of 2495 cycles due to the 35 degree taper side of the Tool joint pushing hard against the polymer material during upward stroke of the stripping test.
Managed Pressure Operations Client: MPO Project: 1082 RDD Equipment: Riser Drilling Device Date: 18.Feb.2014 Doc. no.: 1082-DOC-10695 Rev.: A Title: Single Seal Sleeve(7 Inch) Lubricated
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2. Introduction
Two sets of tests were completed on the 7” Seal sleeve (1082-0201-REV A) to determine the sleeve performance with specified lubrication leak rate across the sealing interface. The objectives were to establish the baseline operational performance characteristics using a 5 7/8” drill pipe with a 7” tool joint under varying rotational speeds and well bore pressures. Test #1 – Dynamic Rotation test of the 5 7/8” DP and 7” TJ through the sleeve with a well bore pressure varying between 500 psi to 1500psi. RPM was increased in increments from 50 to 200 rpm, and the closing pressure applied on the piston varied to maintain a seal with a specified leak rate. Test #2 – Stripping test of the 7” tool joint with a wellbore pressure of 750 to 1000 psi with the specified leak rate.
3. Lubricated dynamic Rotation test on 5- 7/8” DP and 7”TJ
The following sequence was maintained for conducting the lubricated dynamic rotation test on the single sleeve:
a. Test unit was arranged with 7” Seal Sleeve fixed onto test stump as shown in Figure 3. Refer to
drawing No. 1092-1200.
b. Secured top flange on top of test unit body with eight (8) studs.
c. Connect water lines to test unit, hydraulic lines to element packer unit, and quick connect lines to outlet ports on top flange.
d. 5 7/8” drill pipe and 7” TJ was inserted into test body and through the seal sleeve as shown in Figure 2.
e. Filled test unit with water until above the packer element.
f. Closing pressure was applied to the packer element to seal against the wellbore pressure of 500 psi to maintain a leak rate of not more than 4 l/min. The leak rate was controlled by the flow meters through the simulated SIC on the top flange ports.
g. Established a torque rate of 50 RPM’s on the DP.
h. Continued to rotate the DP at 50 RPM’s along with the stripping stroke speed of 100 mm/sec(Upstroke and down stroke) to insert the DP and Tool joint to the sealing region for one hour until all temperature of water flowing has stabilized.
i. After one hour (or temperature stabilization) all data was recorded in Table 1Table 1: Closing of the Seal Sleeve against the 5 7/8" DP & 7" TJ at Differential Rotational Speed & Wellbore Pressure.
j. Steps h-I were repeated for different rotational speed of the drill pipes (100,150,200 rpm) for a 500 psi wellbore pressure.
k. Steps f-J were repeated for different wellbore pressure of 750 psi, 1000 psi, 1250 psi and 1500 psi.
l. All the data were recorded as shown in the Table 1.
Managed Pressure Operations Client: MPO Project: 1082 RDD Equipment: Riser Drilling Device Date: 18.Feb.2014 Doc. no.: 1082-DOC-10695 Rev.: A Title: Single Seal Sleeve(7 Inch) Lubricated
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Figure 1: Single Seal Sleeve with Bottom Spacer
Managed Pressure Operations Client: MPO Project: 1082 RDD Equipment: Riser Drilling Device Date: 18.Feb.2014 Doc. no.: 1082-DOC-10695 Rev.: A Title: Single Seal Sleeve(7 Inch) Lubricated
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Figure 2: Test Setup for the Single Seal Sleeve Dynamic Lubricated Test
Managed Pressure Operations Client: MPO Project: 1082 RDD Equipment: Riser Drilling Device Date: 18.Feb.2014 Doc. no.: 1082-DOC-10695 Rev.: A Title: Single Seal Sleeve(7 Inch) Lubricated
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Figure 3: Extract from drawing 1092-1200 showing the cross sectional view of the test setup
Managed Pressure Operations Client: MPO Project: 1082 RDD Equipment: Riser Drilling Device Date: 18.Feb.2014 Doc. no.: 1082-DOC-10695 Rev.: A Title: Single Seal Sleeve(7 Inch) Lubricated
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Figure 4: Extract from drawing 1092-1300 showing the Seal Sleeve insert assembly
Managed Pressure Operations Client: MPO Project: 1082 RDD Equipment: Riser Drilling Device Date: 18.Feb.2014 Doc. no.: 1082-DOC-10695 Rev.: A Title: Single Seal Sleeve(7 Inch) Lubricated
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Figure 5: Drawing 1092-6003 showing test mandrel representing 5-7/8” drill pipe with 7” tool joints used for testing
Figure 6: Test mandrel representing 5-7/8” drill pipe with 7” tool joints used for testing (part 1092-6003)
Managed Pressure Operations Client: MPO Project: 1082 RDD Equipment: Riser Drilling Device Date: 18.Feb.2014 Doc. no.: 1082-DOC-10695 Rev.: A Title: Single Seal Sleeve(7 Inch) Lubricated
Table 1: Closing of the Seal Sleeve against the 5 7/8" DP & 7" TJ at Differential Rotational Speed & Wellbore Pressure
Figure 7: Closing pressure VS DP Rotation speed at constant Wellbore Pressure
Managed Pressure Operations Client: MPO Project: 1082 RDD Equipment: Riser Drilling Device Date: 18.Feb.2014 Doc. no.: 1082-DOC-10695 Rev.: A Title: Single Seal Sleeve(7 Inch) Lubricated
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Figure 8: Temperature of Wellbore Fluid during Rotation test
Figure 9: Total Rotation Hrs VS DP Rotational speed in rpm
Rotation test was carried out for a total of 89.5 Hrs. In which, 65% of the test was carried out at 1500 psi wellbore pressure condition. Maximum Temperature of the wellbore fluid during the rotation test was 36°C.
Managed Pressure Operations Client: MPO Project: 1082 RDD Equipment: Riser Drilling Device Date: 18.Feb.2014 Doc. no.: 1082-DOC-10695 Rev.: A Title: Single Seal Sleeve(7 Inch) Lubricated
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Upon completion of Dynamic rotation test, the sleeve was removed for inspection. The degree of wear on both the PTFE and polyurethane components was measured. Figure 10 shows the outside of sleeve immediately after completion of the Dynamic rotation test. The sleeve is permanently deformed and bowed inwards. This is attributed to the loss of material on the inside of the sleeve. The outer profile did not really change after time. The indentations towards the top of the seal are from the annular fingers. It would appear from these marks that the sleeve did not rotate during the dynamic rotation testing. Figure 11 shows the Inner region of the sleeve after the Dynamic rotation test. Zoomed view of the inner surface in Figure 12 shows the PTFE sealing region during the Rotation test. 3D Laser scanning of the Seal Sleeve after the Dynamic Rotation test was carried out to compare with the actual model to evaluate the critical wearing regions. Sectional view of the comparison model was shown in the Figure 14.Comparison of the results shows that the Outside of the sleeve compressed radially inwards to a maximum of 9.5 mm at the upper regions due to the finger effects and the inner side of the sleeve extrudes to the bore of about 4 mm at the bottom region and 1.5 mm at the Top region. These figures show that the wearing of the seal sleeve occurs more at the top region compared to the bottom during the Dynamic Rotation test.
Figure 10: Outer Surface of the 7” Seal Sleeve after the Dynamic Rotation test
Managed Pressure Operations Client: MPO Project: 1082 RDD Equipment: Riser Drilling Device Date: 18.Feb.2014 Doc. no.: 1082-DOC-10695 Rev.: A Title: Single Seal Sleeve(7 Inch) Lubricated
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Figure 11: Inner Surface of the 7” Seal Sleeve after the Dynamic Rotation Test
Figure 12: Inner Surface of the 7” Seal Sleeve after the Dynamic Rotation Test
Managed Pressure Operations Client: MPO Project: 1082 RDD Equipment: Riser Drilling Device Date: 18.Feb.2014 Doc. no.: 1082-DOC-10695 Rev.: A Title: Single Seal Sleeve(7 Inch) Lubricated
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Figure 13: 3D Comparison of Rotation Test Seal Scanned model with Actual model
Figure 14: Dimensional deviation of the 7” Sleeve after Rotation Test with Actual Model
Managed Pressure Operations Client: MPO Project: 1082 RDD Equipment: Riser Drilling Device Date: 18.Feb.2014 Doc. no.: 1082-DOC-10695 Rev.: A Title: Single Seal Sleeve(7 Inch) Lubricated
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4. Stripping test on 5-7/8 DP and 7” TJ
This test determines the ability for the Seal sleeve to maintain wellbore pressure while handling the stripping of 5-7/8” drill pipe and 7” tool joints.
The following sequence was followed for conducting the Stripping test on the single seal sleeve: a. Test unit was arranged with 7” Seal Sleeve fixed onto test stump. Refer to drawing No. 1092-1200.
b. Secured top flange on top of test unit body with eight (8) studs.
c. Connect water lines to test unit, hydraulic lines to element packer unit, and quick connect lines to
outlet ports on top flange.
d. 5 7/8” drill pipe and 7” tool joint was inserted into test body and through the seal sleeve.
e. Filled test unit with water until above the packer element.
f. Continued to flow water out of the top flange by engaging the seal sleeve with the applied pressure load on the packer element.
g. Closing pressure was applied to the packer element to regulate the leak rate of not more than 4 l/min. Monitored through the flow meters in the simulated SIC on the top flange ports.
h. Test unit was pressurized between 750psi to 1000 psi to simulate wellbore pressure.
i. Closing pressure was adjusted to maintain a leak rate of 4l/min.
j. Stripping test was carried out with the stripping speed of 1 ft/sec for 1000 cycles by maintaining the specified leak rate.
k. All the data recorded was shown in the Table 2below.
4.1 Stripping Test results:
Wellbore Pressure in psi
No of stripping cycles
Wellbore Fluid temperature in °C
Interval T1 Interval T2 Interval T3 Interval T4
750 1409 37 39.3 39.6 41.5
1000 1086 37.7 38.1 44.1 46.5
Table 2: Stripping on 5-7/8” DP & 7” TJ
Managed Pressure Operations Client: MPO Project: 1082 RDD Equipment: Riser Drilling Device Date: 18.Feb.2014 Doc. no.: 1082-DOC-10695 Rev.: A Title: Single Seal Sleeve(7 Inch) Lubricated
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Figure 15: Stripping cycles VS Wellbore Pressure
Figure 16: Temperature of Wellbore Fluid during Stripping Test
Managed Pressure Operations Client: MPO Project: 1082 RDD Equipment: Riser Drilling Device Date: 18.Feb.2014 Doc. no.: 1082-DOC-10695 Rev.: A Title: Single Seal Sleeve(7 Inch) Lubricated
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Figure 17 shows the outside of sleeve after the stripping test. The indentations towards the top of the seal are from the annular fingers. Figure 18 shows the inner surface of sleeve after completion of the stripping test.
Figure 17: Outer Surface of the 7” Seal Sleeve after the Stripping test
Figure 18: Inner Surface of the 7” Seal Sleeve after the Stripping Test
Managed Pressure Operations Client: MPO Project: 1082 RDD Equipment: Riser Drilling Device Date: 18.Feb.2014 Doc. no.: 1082-DOC-10695 Rev.: A Title: Single Seal Sleeve(7 Inch) Lubricated
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3D Laser scanning of the Seal Sleeve after the Stripping test was carried out to compare with the actual model to evaluate the critical Wear regions. Sectional view of the comparison model was shown in the Figure 20. Comparison of the results shows that the Outside of the sleeve compressed radially inwards to a maximum of 13.7 mm at the upper regions due to the finger effects and the inner side of the sleeve extrudes to the bore of about 4.6 mm at the bottom region. Polymer seal wears out to a magnitude of 24.3 mm at the Top region due to the 35 degree taper side of the Tool joint pushing hard against the polymer material during upward stroke of the stripping test.
Figure 19: 3D Comparison of Stripping Test Seal Scanned model with Actual model
Managed Pressure Operations Client: MPO Project: 1082 RDD Equipment: Riser Drilling Device Date: 18.Feb.2014 Doc. no.: 1082-DOC-10695 Rev.: A Title: Single Seal Sleeve(7 Inch) Lubricated
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Figure 20: Dimensional deviation of the 7” Sleeve after Stripping Test with Actual Model
