11/7-13 0 FOR REVIEW

DATE

REV.

MARK

DESCRIPTION

DESIGNED

REVIEWED

APPROVED

PLAN HISTORY

DALIAN CHINA

TEL:0411-84482714

FAX:0411-84412923

E-MAIL:

JU2000E JU2000E JACK-UP DRILLING RIG

TECHNICAL DESIGN

DS311-141-002GY

FILE

REV.

0

CANTILEVER WEIGHING TEST REPORT

WEIGHT

SCALE

DESIGNED 11/7-13 7 TOTAL SHEETS

1 SHEET CHECKED 11/7-13

REVIEWED 11/7-13 STANDARDIZED 11/7-13

JU2000E-9 APPROVED 11/7-13

DS311-141-002GY 7 2

1. Introduction

1.1

To determine the finishing weight and center of gravity of cantilever beam, Weighing of the

cantilever beam should be conducted.

1.2

The weighing method is to lift the drill with 18 sets of hydraulic jacks which fixed with load

sensor on and determine the weight of cantilever beam by the reading of load sensor by strain

gauges.

1.3

Any weights those are included in wet weight of cantilever beam should be added.

2. Items Required to Perform Weighing Process

CLS-3002 8CLL-2002 10

H2A-G2-3MN-5B18

8 sets of CLS-3002 hydraulic jacks

10 sets of CLL-2002 hydraulic jacks

18 sets H2A-G2-3MN-5B load sensor by strain gauges.

3. Main Dimension of cantilever

cantilever(L)55.60m drill floor(L)20m

cantilever(B)18.296 m drill floor (B)23.3m

cantilever(H)8.53 m drill floor (H)10.115m

4. Theoretical Weight & Gravity of Cantilever beam

Weight1663.825t

LCG(m): 22.877m

TCG(m):0.219m

VCG(m):15.582m

DS311-G109-002REV D.

More information please see weight control report, file number isDS311-G109-002REV D.

DS311-141-002GY 7 3

5. Preparation For Weighing the cantilever

5.1

1

The cantilever beam should be at the finishing status, any facilities that are not installed should

be registered in table 1, and the cantilever beam should be clean of superabundance.

5.2 1

Any liquid weight should be registered in table 1 and be conducted.

1

Table1: Increasing (redundant) and decreasing (absent) equipment on cantilever beam No.

name

kg

Weighting

Kg

X

LCG(m)

Y

TCG(m)

/

absent/ redundant

1 BOP control unit

52000 40.607 5.585

redundant

2 BOP HPU 80% Liquid on HPU of BOP

6300 26693 6.573 redundant

3 HPU 80% Liquid on HPU

2800 23.340 2.445 redundant

4 BOP stack 87100 11.920 -2920 redundant

5 Tool box of NOV

500 12.920 -3920 redundant

6 CTU platform

106000 7.010 0 absent

7 35T Platform on 35T crane

1399 15.884 6.365 absent

a) L.C.G.FR31, b) T.C.G. c) V.C.G.

Note: abscissa axis: CL; ordinate axis: stern of cantilever

Forward is +, left is +, hull base line is 0 VCG.

DS311-141-002GY 7 4

2 R.T Table2: Increasing (redundant) and decreasing (absent) equipment on drill floor The gravity centers is based on R.T

No.

Name

kg

Weighting

Kg

X

LCG(m)

Y

TCG(m)

/

absent

/ redundant

1 Walk platform

661 8.812 -4.386 absent

2 Walk platform

157 9.454 -9.426 absent

3 stairway 617

9.402 -7.001 absent

4 1 handrail 103

9.338 -3.829 absent

5 2 handrail

29 8.409 -5.536 absent

6 3 handrail 31

9.89 -9.496 absent

7 4 handrail 28

9.36 -9.991 absent

8 HPU Oil on HPU 1350

2861 8800 redundant

9 Oil on equipment

540 -3000 11000 redundant

XY Z

Note: center of rotary table is 0, forward is +, left is +, hull base line is 0 VCG.

6.Weighing the cantilever

6.1

Arrangement of hydraulic jack see following drawing .

DS311-141-002GY 7 5

stern of cantilever

X

Y

FWD

43009220

15080

22730

29730

36630

45030

51730

44009400

15300

23030

29830

37000

45250

51850

1#

2#

3#4#5#6#7#8#9#

10#

11#12#13#14#15#16#17#18#

FR31

HULL CENTER LINE

3

Table3:Record of test reading

Reading 1

Weight Wi (Kg)

Reading 2

Weight Wi (Kg)

Reading 3

Weight Wi (Kg)

NO.1 268050 288100 285700

NO.2 234150 212100 216600

NO.3 285300 278500 277300

NO.4 236500 259300 258300

NO.5 139000 136150 136350

NO.6 76050 70100 70350

NO.7 49250 45700 45850

DS311-141-002GY 7 6

NO.8 72250 71100 71150

NO.9 69900 70700 70550

NO.10 255850 255350 255150

NO.11 237750 237300 237100

NO.12 257150 252050 251800

NO.13 236700 229350 229250

NO.14 108450 95500 95600

NO.15 32250 58250 58050

NO16 86450 104250 104250

NO.17 110850 100850 100950

NO.18 138750 131750 131700

total W (Kg)

2894650 2896400 2896000

7. Conclusion of Weighing the cantilever

A hydraulic weighing method is described as below:

=

=n

iiWW

1

W

XWX

n

iii

= 1 W

YWY

n

iii

== 1

i is the number of hydraulic cylinder

n is the quantity of floor leg

W is the whole weight of drill floor

Wi is the supported weight of drill floor

Xi,Yi is the coordinate of the No.i leg along X and Y direction

X,Y is the center of gravity along the X and Y coordinates

DS311-141-002GY 7 7

7.1

Conclusion of weighing the cantilever under the site

Kg

The whole weight

(Kg)

X (mm)

Center of gravity X

(m)

Y (mm)

Center of gravity Y

(m)

Reading1 2894650 17106.75 -103.38 Reading2 2896400 17112.77 -98.02 Reading3 2896000 17110.80 -94.67 Average 2895683 17110.11 -98.69

7.2

Conclusion of Weighing the Cantilever beam with increasing and decreasing equipment

T

The whole weight (T)

X (m)

Center of gravity X (m)

Y (m)

Center of gravity Y (m)

2854.118 16.44351 -0.13135

7.3

Conclusion of Weighing the Cantilever beam excluding the drill floor

T

The whole weight (T)

X (m)

Center of gravity X (m)

Y (m)

Center of gravity Y (m)

1739.106 22.877 -0.031