Page 3 - Jacking Systems and Rig Moving Procedures

Petroleum Extension-The University of Texas at Austin

CONTENTS

Foreword ...... ............................ ....................................................................................... ...... ....... iii
CHAPTER I. INTRODUCTION TO JACKING SYSTEMS
History ................................ ................ .. ...... .... ........................... ............ ............ 1
Move Supervisors ...... ...... ..................... ....... ................... ............. ........................ 5
CHAPTER II. INDEPENDENT-LEG DRILLING UNITS
General Description ........ .. ................... ..... .... ... ............................. ................. , .. 7
General Operating Procedmes ........ .................................... .................. 10
Marathon LeTourneau Jacking System .... .............. ........................ .................. 11
Almco National Supply Jacking System .................... ....... .................. .............13
The Offshore Company's Electro-Hydraulic Jacking System .. .. ....................15
Baker Jacking System .... ...... ........................ .... .............. .............. ........ ..............16
CHAPTER III. MAT-TYPE DRILLING UNITS
General Description ............................ ......................... ........... .... .......... ............ 19
General Operating Procedmes ........ ...................................... .................. .. ...... 20
Bethlehem Hydraulic Jacking System .. . ................... .................... ...... 22
CHAPTER IV. MOVING AND JACKING PROCEDURES
General Instructions ........................ ........ ........... ................ ............................ .. 27
Personnel .... ........ ................ ........ ....................... ..................... ............ .............. 27
Removing Unit from Loca tion........ ................. .. ................................ ..............27
Stability and Strength During Tow ......... ...................................................... ... 29
General Notes for Service Afloat .... ........ ................................ .......................... 30
Limits of Service Afloat ........... .................. ............ .......................... .. .. ............ 30
Operational Instructions While Afloat .... ............ .. .................... ......................31
Weight Distribution While Afloat ....................................................................32
Recommendations for Storms While Afloat .......................... ...... ...... ............ .. 33
Emergency Instructions for Flooding ................ ..... ........... .................... .......... 33
Maximum Roll/Pitch for Going on Location .......... , ............................. .......... 33
Preliminary Checklist Prior to Going on Location ............ .... ..................... ... .. 34
Setting Unit on Location ..... ... .................... : ........... ........................ ............ .... .. 34
Engaging Bottom and Elevating the Hull.. ............ ... .................... ................ .. 37
Strength on Location . .... . ..... ..... .... ...... ..... .. .. ..... .. .. ... .... .. .. .. ... ..... ...... ... 37
Weight Distribution in Elevated Conditions ................................................. ... 38
Recommendations for Storms While Elevated .................. ........................ ......38
Lowering the Hull and Floating the Unit .... ..... ... .. .. .. ... ... ..... ....... ... .... .... .. ... ... .39
GLOSSARy ................................ ........ ........................ .................... ......... ........... ... .................... ..41