Review 863491951115 - Revision history

Rimni at 14:11, 15 December 2020

2020-12-15T14:11:57Z

Rimni at 14:10, 15 December 2020

2020-12-15T14:10:57Z

Rimni at 13:26, 15 December 2020

2020-12-15T13:26:57Z

Rimni: /* 3. Conclusions */

2020-12-15T13:26:22Z

‎3. Conclusions

Rimni at 13:25, 15 December 2020

2020-12-15T13:25:57Z

Rimni at 13:17, 15 December 2020

2020-12-15T13:17:34Z

Rimni at 13:16, 15 December 2020

2020-12-15T13:16:34Z

Rimni: /* 3.2 Discussion */

2020-12-15T13:15:18Z

‎3.2 Discussion

Rimni at 13:14, 15 December 2020

2020-12-15T13:14:14Z

Rimni at 13:11, 15 December 2020

2020-12-15T13:11:48Z

@@ Line 115: / Line 115: @@
 {| style="text-align: center; margin:auto;"
 |-
-| <math>S(t)={S}_{0}+{S}_{L}\mathrm{sin}\,(\frac{2\pi t}{{T}_{L}}-{\alpha }_{L})+\sum _{n=1}^{N}{S}_{n}\mathrm{cos}\,({k}_{n}S(t)-{\omega }_{n}t+{\phi }_{n}+{\alpha }_{n})</math>
+| <math>S(t)={S}_{0}+{S}_{L}\mathrm{sin}\,\left(\frac{2\pi t}{{T}_{L}}-{\alpha }_{L}\right)+\sum _{n=1}^{N}{S}_{n}\mathrm{cos}\,({k}_{n}S(t)-{\omega }_{n}t+{\phi }_{n}+{\alpha }_{n})</math>
 |}
 | style="width: 5px;text-align: right;white-space: nowrap;" | (6)

← Older revision		Revision as of 14:10, 15 December 2020
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−	Shown as in [[#img-1\|Figure 1]], the installation pipe is subjected to wave load, current load conducted by the ocean water and the surging load conducted by the platform at x direction. And the pipe is subjected to the wet weight conducted by SCT and installation pipe and the heaving load conducted by the platform at z direction. Then, the fourth-order partial differential governing equation of the installation can be obtained based on the Euler–Bernoulli beam theory as [15],	+	Shown as in [[#img-1\|Figure 1]], the installation pipe is subjected to wave load, current load conducted by the ocean water and the surging load conducted by the platform at <math>x</math> direction. And the pipe is subjected to the wet weight conducted by SCT and installation pipe and the heaving load conducted by the platform at z direction. Then, the fourth-order partial differential governing equation of the installation can be obtained based on the Euler–Bernoulli beam theory as [15],

	{\| class="formulaSCP" style="width: 100%; text-align: center;"		{\| class="formulaSCP" style="width: 100%; text-align: center;"

@@ Line 546: / Line 546: @@
 ==References==
 [1] Voss R., Moore T. Subsea tree installation, lessons learned on a West Africa development. Offshore Technology Conference, 2003.
@@ Line 580: / Line 581: @@
 [17] Sexton M., Agbezuge K. Random wave and vessel motion effects on drilling riser dynamics. Offshore Technology Conference, 1976.

@@ Line 534: / Line 534: @@
 ==3. Conclusions==
-The effects of surging and heaving movements on the mechanical behaviors of SCT installation pipe were investigated in this research. Movements of SCT installation platform, ocean wave and current, water depth, SCT weight, installation pipe specification and those might dominate the mechanical behaviors of installation pipe and SCT installation precision were considered. Based on the research done in this research, the following results and conclusions were obtained.
+The effects of surging and heaving movements on the mechanical behaviors of SCT installation pipe were investigated in this research. Movements of SCT installation platform, ocean wave and current, water depth, SCT weight, installation pipe specification and those might dominate the mechanical behaviors of installation pipe and SCT installation precision were considered. Based on the research done in this research, the following results and conclusions were obtained:
 #  Due to surging movement amplitude is larger than that of the heaving movement of the platform during SCT installation process, the variation range of SCT displacement at <math>z</math> direction is much larger than that of the variation range at <math>x</math> direction.

@@ Line 532: / Line 532: @@
 |}
-=3. Conclusions=
+==3. Conclusions==
 The effects of surging and heaving movements on the mechanical behaviors of SCT installation pipe were investigated in this research. Movements of SCT installation platform, ocean wave and current, water depth, SCT weight, installation pipe specification and those might dominate the mechanical behaviors of installation pipe and SCT installation precision were considered. Based on the research done in this research, the following results and conclusions were obtained.
-(1) Due to surging movement amplitude is larger than that of the heaving movement of the platform during SCT installation process, the variation range of SCT displacement at ''z'' direction is much larger than that of the variation range at ''x'' direction.
+#  Due to surging movement amplitude is larger than that of the heaving movement of the platform during SCT installation process, the variation range of SCT displacement at <math>z</math> direction is much larger than that of the variation range at <math>x</math> direction.
+#  The SCT displacement at <math>x</math> and <math>z</math> direction increase with water depth while its variation range decrease with water depth.
-(2) The SCT displacement at ''x'' and ''z'' direction increase with water depth while its variation range decrease with water depth.
+#  The deformation of SCT installation pipe, as well as the bending stress at upper areas of the pipe where locate its maximum stress, increases with water depth and pipe specification while decrease with SCT weight.
+# The maximum tension force loaded at top of the installation pipe increased about 22.7% compared with SCT installed at static state when surging and heaving movements of the platform were considered. And the tension force loaded on the pipe increase with water depth, SCT weight and pipe specification.
-(3) The deformation of SCT installation pipe, as well as the bending stress at upper areas of the pipe where locate its maximum stress, increases with water depth and pipe specification while decrease with SCT weight.
-−
-(4) The maximum tension force loaded at top of the installation pipe increased about 22.7% compared with SCT installed at static state when surging and heaving movements of the platform were considered. And the tension force loaded on the pipe increase with water depth, SCT weight and pipe specification.
 ==Acknowledgements==
@@ Line 550: / Line 547: @@
 ==References==
-[1] Voss, R., Moore, T. Subsea tree installation, lessons learned on a West Africa development. Offshore Technology Conference. 2003.
+[1] Voss R., Moore T. Subsea tree installation, lessons learned on a West Africa development. Offshore Technology Conference, 2003.
-[2] Dennis, D. Subsea hardware installation from an FDPSO. Journal of Petroleum Technology. 62(8):60-62, 2010.
+[2] Dennis D. Subsea hardware installation from an FDPSO. Journal of Petroleum Technology, 62(8):60-62, 2010.
-[3] Razzouk, A. Thinking out of the subsea Xmas tree. SPE Offshore Europe Conference and Exhibition. 2015.
+[3] Razzouk A. Thinking out of the subsea Xmas tree. SPE Offshore Europe Conference and Exhibition, 2015.
-[4] Kaiser, J. Deepwater subsea well spuds on the decline: dry tree versus wet tree trends examined. Offshore. 79(2):26-27, 2019.
+[4] Kaiser J. Deepwater subsea well spuds on the decline: dry tree versus wet tree trends examined. Offshore, 79(2):26-27, 2019.
-[5] Lin, X., Xiao, W., Wang, H. Drill string mechanical analysis of running deep-water oil tree. Journal of China University of Petroleum. 35(5):125-130, 2011.
+[5] Lin X., Xiao W., Wang H. Drill string mechanical analysis of running deep-water oil tree. Journal of China University of Petroleum, 35(5):125-130, 2011.
-[6] Gong, M., Liu, Z., Duan, M. Research on the running instalment process of deep-sea underwater Christmas tree. China Petroleum Machinery. 41(4):50-54, 2013.
+[6] Gong M., Liu Z., Duan M. Research on the running instalment process of deep-sea underwater Christmas tree. China Petroleum Machinery, 41(4):50-54, 2013.
-[7] Wang, Y., Gao, D., Fang, J. Static analysis of deep-water marine riser subjected to both axial and lateral forces in its installation. Journal of Natural Gas Science and Engineering. 19:84-90, 2014.
+[7] Wang Y., Gao D., Fang J. Static analysis of deep-water marine riser subjected to both axial and lateral forces in its installation. Journal of Natural Gas Science and Engineering, 19:84-90, 2014.
-[8] Hu, Y., Yao, B., Zheng, Z., Lian, L. Research on marine riser in different installations stages of subsea production tree. OCEANS 2016 - Shanghai. IEEE. 2016.
+[8] Hu Y., Yao B., Zheng Z., Lian L. Research on marine riser in different installations stages of subsea production tree. OCEANS 2016 - Shanghai, IEEE, 2016.
-[9] Hu, Y., Cao, J., Yao, B., Zeng, Z., Lian, L. Dynamic behaviours of a marine riser with variable length during the installation of a subsea production tree. Journal of Marine Science and Technology. 23(2):378-388, 2017.
+[9] Hu Y., Cao J., Yao B., Zeng Z., Lian L. Dynamic behaviours of a marine riser with variable length during the installation of a subsea production tree. Journal of Marine Science and Technology, 23(2):378-388, 2017.
-[10] Qin, H., Liu, J., Xiao, W., Wang, B. Quasistatic nonlinear analysis of a drill pipe in subsea Xmas tree installation. Mathematical Problems in Engineering. 38(1):1-9, 2019.
+[10] Qin H., Liu J., Xiao W., Wang B. Quasistatic nonlinear analysis of a drill pipe in subsea Xmas tree installation. Mathematical Problems in Engineering, 38(1):1-9, 2019.
-[11] Li, Y., Zhao, H., Xu, N., Wang, X. Study of the installation process of the subsea tree passed through the splash zone. Energies. 13(5):10-14, 2020.
+[11] Li Y., Zhao H., Xu N., Wang X. Study of the installation process of the subsea tree passed through the splash zone. Energies, 13(5):10-14, 2020.
-[12] Jia, D., Agrawal, M. Fluid structure interaction: lowering subsea structure/equipment in splash zone during installation. Offshore Technology Conference. 2014.
+[12] Jia D., Agrawal M. Fluid structure interaction: lowering subsea structure/equipment in splash zone during installation. Offshore Technology Conference, 2014.
-[13] Fei, W., Neng, C. Dynamic response analysis of drill pipe considering horizontal movement of platform during installation of subsea production tree. Polish Maritime Research. 27(3):22-30, 2020.
+[13] Fei W., Neng C. Dynamic response analysis of drill pipe considering horizontal movement of platform during installation of subsea production tree. Polish Maritime Research, 27(3):22-30, 2020.
-[14] Fei, W., Neng, C., Xiong, D., Xiaoke, J. Analysis of operability envelopes for subsea production tree installation. RIMNI. 36(4):1-20, 2020.
+[14] Fei W., Neng C., Xiong D., Xiaoke J. Analysis of operability envelopes for subsea production tree installation. Revista Internacional de Métodos Numéricos para Cálculo y Diseño en Ingeniería, 36(4):1-20, 2020.
-[15] Fan, H., Li, C., Wang, Z., Xu, L. Dynamic analysis of a hang-off drilling riser considering internal solitary wave and vessel motion. Journal of Natural Gas Science and Engineering. 37:512-522, 2017.
+[15] Fan H., Li C., Wang Z., Xu L. Dynamic analysis of a hang-off drilling riser considering internal solitary wave and vessel motion. Journal of Natural Gas Science and Engineering, 37:512-522, 2017.
-[16] Wilson, J (Ed). Dynamics of Offshore Structures. Beijing Petroleum Industry Press. 1991.
+[16] Wilson J (Ed). Dynamics of Offshore Structures. Beijing Petroleum Industry Press, 1991.
-[17] Sexton, M., Agbezuge, K. Random wave and vessel motion effects on drilling riser dynamics. Offshore Technology Conference. 1976.
+[17] Sexton M., Agbezuge K. Random wave and vessel motion effects on drilling riser dynamics. Offshore Technology Conference, 1976.

@@ Line 504: / Line 504: @@
 !   rowspan='2'|Pipe specifications: in!!   rowspan='2' |Static state: kN !!   colspan='2'  |Dynamic state: kN
 |-
-!   style="text-align: center;background:Lavender;"|Minimum !!  style="text-align: center;"|Maximum
+!   style="text-align: center;"|Minimum !!  style="text-align: center;"|Maximum
 |-
 |  style="text-align: center;"|4

@@ Line 497: / Line 497: @@
-<div class="center" style="width: auto; margin-left: auto; margin-right: auto;">
+<div class="center" style="font-size: 75%;">'''Table 7'''. Tension force loaded at top end of the installation pipe in different installation pipe</div>
 Table 7 Tension force loaded at top end of the installation pipe in different installation pipe</div>
-{| style="width: 66%;margin: 1em auto 0.1em auto;border-collapse: collapse;"
+<div id='tab-7'></div>
-|-
+{| class="wikitable" style="margin: 1em auto 0.1em auto;border-collapse: collapse;font-size:85%;width:auto;"
 !   rowspan='2'|Pipe specifications: in!!   rowspan='2' |Static state: kN !!   colspan='2'  |Dynamic state: kN
 |-
-!   style="text-align: center;"|Minimum !!  style="text-align: center;"|Maximum
+!   style="text-align: center;background:NavajoWhite;"|Minimum !!  style="text-align: center;"|Maximum
 |-
 |  style="text-align: center;"|4

@@ Line 282: / Line 282: @@
 !   rowspan='2' |Water Depth: m !!   colspan='2'  |Displacement at <math>x</math> direction: m !!   colspan='2'  |Displacement at <math>z</math> direction: m
 |-
-|  style="text-align: center;"|Minimum
+!   style="text-align: center;"|Minimum !!   style="text-align: center;"|Maximum !!   style="text-align: center;"|Minimum !!   style="text-align: center;"|Maximum
-|  style="text-align: center;"|Maximum
-|  style="text-align: center;"|Minimum
-|  style="text-align: center;"|Maximum
 |-
 |  style="text-align: center;"|600
@@ Line 376: / Line 373: @@
 ! rowspan='2' |SCT wet weight: kN !!   colspan='2'  |Displacement at <math>x</math> direction: m !!   colspan='2' |Displacement at <math>z</math> direction: m
 |-
-|  style="text-align: center;"|Minimum
+!   style="text-align: center;"|Minimum !!   style="text-align: center;"|Maximum !!   style="text-align: center;"|Minimum !!   style="text-align: center;"|Maximum
-|  style="text-align: center;"|Maximum
-|  style="text-align: center;"|Minimum
-|  style="text-align: center;"|Maximum
 |-
 |  style="text-align: center;"|200
@@ Line 420: / Line 414: @@
 !   rowspan='2'|SCT wet weight: kN !!   rowspan='2' |Static state: kN !!   colspan='2'  |Dynamic state: kN
 |-
-|  style="text-align: center;"|Minimum
+!   style="text-align: center;"|Minimum !!  style="text-align: center;"|Maximum
-|  style="text-align: center;"|Maximum
 |-
 |  style="text-align: center;"|200
@@ Line 470: / Line 463: @@
 !   rowspan='2'|Pipe specifications: in!!   colspan='2' |Displacement at <math>x</math> direction: m !!   colspan='2'  |Displacement at <math>z</math> direction: m
 |-
-|  style="text-align: center;"|Minimum
+!   style="text-align: center;"|Minimum !!   style="text-align: center;"|Maximum !!   style="text-align: center;"|Minimum !!   style="text-align: center;"|Maximum
-|  style="text-align: center;"|Maximum
-|  style="text-align: center;"|Minimum
-|  style="text-align: center;"|Maximum
 |-
 |  style="text-align: center;"|4
@@ Line 512: / Line 502: @@
 {| style="width: 66%;margin: 1em auto 0.1em auto;border-collapse: collapse;"
 |-
-|  rowspan='2' style="border: 1pt solid black;text-align: center;"|Pipe specifications: in
+!   rowspan='2'|Pipe specifications: in!!   rowspan='2' |Static state: kN !!   colspan='2'  |Dynamic state: kN
-|  rowspan='2' style="border: 1pt solid black;text-align: center;"|Static state: kN
-|  colspan='2'  style="border: 1pt solid black;text-align: center;"|Dynamic state: kN
 |-
-|  style="border: 1pt solid black;text-align: center;"|Minimum
+!   style="text-align: center;"|Minimum !!  style="text-align: center;"|Maximum
-|  style="border: 1pt solid black;text-align: center;"|Maximum
 |-
-|  style="border: 1pt solid black;text-align: center;"|4
+|  style="text-align: center;"|4
-|  style="border: 1pt solid black;text-align: center;"|458.3
+|  style="text-align: center;"|458.3
-|  style="border: 1pt solid black;text-align: center;"|361.4
+|  style="text-align: center;"|361.4
-|  style="border: 1pt solid black;text-align: center;"|557.4
+|  style="text-align: center;"|557.4
 |-
-|  style="border: 1pt solid black;text-align: center;"|4 1/2
+|  style="text-align: center;"|4 1/2
-|  style="border: 1pt solid black;text-align: center;"|531.33
+|  style="text-align: center;"|531.33
-|  style="border: 1pt solid black;text-align: center;"|416.6
+|  style="text-align: center;"|416.6
-|  style="border: 1pt solid black;text-align: center;"|645.6
+|  style="text-align: center;"|645.6
 |-
-|  style="border: 1pt solid black;text-align: center;"|5
+|  style="text-align: center;"|5
-|  style="border: 1pt solid black;text-align: center;"|599.2
+|  style="text-align: center;"|599.2
-|  style="border: 1pt solid black;text-align: center;"|469.3
+|  style="text-align: center;"|469.3
-|  style="border: 1pt solid black;text-align: center;"|735.5
+|  style="text-align: center;"|735.5
 |-
-|  style="border: 1pt solid black;text-align: center;"|5 1/2
+|  style="text-align: center;"|5 1/2
-|  style="border: 1pt solid black;text-align: center;"|587.9
+|  style="text-align: center;"|587.9
-|  style="border: 1pt solid black;text-align: center;"|456.2
+|  style="text-align: center;"|456.2
-|  style="border: 1pt solid black;text-align: center;"|726.2
+|  style="text-align: center;"|726.2
 |-
-|  style="border: 1pt solid black;text-align: center;"|6 5/8
+|  style="text-align: center;"|6 5/8
-|  style="border: 1pt solid black;text-align: center;"|601.4
+|  style="text-align: center;"|601.4
-|  style="border: 1pt solid black;text-align: center;"|455.6
+|  style="text-align: center;"|455.6
-|  style="border: 1pt solid black;text-align: center;"|754.9
+|  style="text-align: center;"|754.9
 |}