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OPERATING PROCEDURE MANUAL "DU" SLIPS

DU SLIPS OP. MANUAL (Rev. B)


SECTION 1 -- INTRODUCTION PURPOSE THIS TECHNICAL MANUAL CONTAINS OPERATION AND MAINTENANCE INSTRUCTIONS FOR AOT "DU" SERIES OF ROTARY SLIPS WITH COMPLETE PARTS BREAKDOWN. IT PROVIDES A GUIDE FOR PROPER FIELD USE, DISASSEMBLY AND REPAIR.

DESCRIPTION THE "DU" SERIES CONSIST OF THREE MODELS OF ROTARY SLIPS. THE DU REGULAR, DU LONG, AND SDU LONG MODEL’S HANDLE A WIDE RANGE OF SIZE AND WEIGHT OF TUBING AND DRILL PIPE WITH INSTALLATION OF THE PROPER SIZE OF INSERTS. THE “SDU” MODELS (SUPER DUTY) HAVE A LARGER SURFACE AREA ON THEIR BACKS AND ARE MORE STOUT THAN THE “DU” MODELS

MODEL

GRIPPING SURFACE LENGTH

RANGE

4-1/2” DU REGULAR

12”

1.660” – 4-1/2”

4-1/2” DU LONG

16”

1.660” – 4-1/2”

5-1/2” DU REGULAR

12”

2-7/8” - 5-1/2”

5-1/2” DU LONG

16”

2-7/8” - 5-1/2”

5-1/2” SDU LONG

16”

2-7/8” - 5-1/2”

7” DU REGULAR

12”

4-1/2” - 7”

7” SDU LONG

16”

4-1/2” - 7”

CAUTION: ANY OVERLOADING OR MISUSE OF THIS EQUIPMENT CAN CAUSE SERIOUS INJURY OR DEATH. NOTE: Modifications and revisions that have been made to this manual are marked by a single bar in the margin.


SECTION 2 -- OPERATION PREPARATION IN ORDER FOR THE "DU" SERIES OF ROTARY SLIPS TO OPERATE PROPERLY, IT IS NECESSARY TO INSTALL THE PROPER SIZE OF INSERTS CORRESPONDING TO THE SIZE OF THE OD IT IS TO CATCH. FOLLOW THE PROCEDURES IN SECTION 4 - CHANGING INSERTS.

OPERATION AFTER INSTALLATION OF THE PROPER SIZE OF INSERTS IN THE ROTARY SLIP, THE SLIP IS READY FOR SERVICE. THE BACK OF THE SLIPS AND ID OF THE BOWL SHOULD BE CLEANED AND GREASED BEFORE USE, AND DAILY DURING USE. TO SET THE SLIPS, MOVE THE DRILL STRING TO THE DESIRED LOCATION AND ALLOW IT TO COME TO A COMPLETE STOP. PLACE THE SLIPS INTO THE TAPERED BOWL OR SPIDER, THEN GENTLY LOWER THE PIPE, WHICH WILL ALLOW THE SLIPS TO WEDGE INTO THE BOWL OR SPIDER AND HOLD THE PIPE FROM MOVING. WHEN LIFTING SLIPS OUT OF THE BOWL FIRMLY GRIP AND APPLY INWARD PRESSURE TO THE FRONT HANDLES OF THE SLIP AS THE PIPE IS LIFTED. THEN, LET THE UPWARD MOVEMENT OF THE PIPE LIFT THE SLIP OUT OF THE BOWL, ONCE THE SLIP IS CLEAR OF THE BOWL PULL ON REAR HANDLE OF SLIP TO CLEAR THE BOWL.

CAUTION: BE SURE TO USE THE HANDLES PROVIDED ON THE SLIP ASSEMBLIES FOR RAISING THE SLIP ASSEMBLY IN AND OUT OF THE BOWL. BE SURE DRILL STRING IS AT A COMPLETE STOP BEFORE SETTING THE SLIPS INTO THE BOWL. THIS WILL CAUSE THE SLIPS TO BE OVERLOADED AND CAN CAUSE DAMAGE TO THE SLIPS. DO NOT USE SLIPS AS A BACKUP. MAKE SURE THE SLIPS ARE USED WITH THE PROPER SIZE OF INSERTS AND SLIP BACKS ARE CLEANED AND GREASED DAILY.


SECTION 3 -- MAINTENANCE CAUTION: PRACTICE SAFETY AT ALL TIMES WHEN SERVICING AND DURING DAILY USE OF AOT EQUIPMENT. ALWAYS USE PROPER SAFETY METHODS, MATERIALS AND TOOLS. ALWAYS WEAR PROTECTIVE GEAR FOR EYES, HEAD AND HANDS.

INSPECTION TO INSURE OPTIMUM PERFORMANCE FROM THE "DU" SERIES OF ROTARY SLIPS, THE FOLLOWING CHECKS SHOULD BE MADE ONCE A WEEK. 1. CHECK FOR WORN HINGE PINS, HANDLE PINS, HINGE SPRING ASSY., LINER RETAINER KEYS AND REPLACE AS NECESSARY. 2. CHECK INSERTS FOR WEAR AND REPLACE AS NECESSARY. 3. SLIPS SHOULD UNDERGO A MAGNETIC PARTICLE INSPECTION A MINIMUM OF ONCE A MONTH, WHEN IN USE AND AFTER EVERY JOB. 4. LINER RETAINER KEYS ACT AS A WEAR PAD AND SHOULD BE REPLACED EVERY THIRD JOB TO ACHIVE MAXIMUM SLIP LIFE. 5. SLIP BACKS SHOULD BE CHECKED WITH A STRAIGHT EDGE WEEKLY. 6. INSPECT BOWL WEEKLY FOR WEAR (MAX. ID. 10 7/8")

LUBRICATION LUBRICATE THE SLIP REGULARLY DURING USAGE AND STORAGE TO PREVENT CORROSION. USE AN EXTREME PRESSURE, MULTIPURPOSE, LITHIUM BASE GREASE OF NO. 1 OR NO. 2 CONSISTENCY AND MULTIWEIGHT MOTOR OIL. WHEN THE TOOL IS IN USE, LUBRICATE THE SLIP ACCORDING TO THE FOLLOWING SCHEDULE OR ANNUALY WHILE IN STORAGE.

DAILY: 1. CLEAN AND GREASE SLIP BACKS AND BOWL ID DAILY.

WEEKLY: 1. GREASE HINGE PINS WEEKLY. . 2. REMOVE INSERTS AND GREASE INSERT SLOTS WEEKLY


SECTION 4 -- SHOP REPAIRS CHANGING INSERTS. TO REPLACE WORN INSERTS OR CHANGE SIZES. 1. REMOVE LINER RETAINER KEY COTTER AND THEN REMOVE LINER RETAINER KEY. CAUTION: ALWAYS WEAR EYE PROTECTION WHEN REMOVING OR REPLACING INSERTS TO PROTECT AGAINST CHIP FRAGMENTS.

2. USING A BRASS PUNCH AND HAMMER, DRIVE OUT THE INSERTS. IMPORTANT: ALWAYS INSTALL THE PROPER SIZE INSERTS FOR THE TUBULAR TO BE USED ON.

3.

CLEAN AND GREASE THE INSERT SLOTS BEFORE INSTALLING NEW INSERTS.

4.

REPLACE THE LINER RETAINER KEYS EVERY THIRD JOB OR WHEN INSERTS BECOME LOOSE WHICHEVER IS FIRST. THIS WILL INSURE A LONGER SLIP LIFE.

5.

INSTALL LINER RETAINER COTTER KEYS.

SLIP DISASSEMBLY: 1.

REMOVE HINGE PIN COTTERS AND HINGE PINS.

2.

REMOVE INSERTS (SEE SECTION 4 CHANGING INSERTS.)

3.

AFTER INSPECTING ALL PARTS FOR CRACKS AND WEAR, REPLACE DEFECTIVE PARTS AND REASSEMBLE IN REVERSE ORDER.

CAUTION: DUE TO THE COMPLEX METALLURGY IN AOT "DU" ROTARY SLIPS WELDING SHOULD BE PERFORMED ONLY BY AOT OR AN AUTHORIZED REPAIR AGENT.


AOT “DU” TYPE ROTARY SLIPS

The AOT “DU” Rotary slips are designed for long trouble free service. They are made of alloy steel and heat-treated for strength and resistance to wear. Both slips are for use in API tapered bowls. The AOT “DU” regular has a 12” long gripping surface and is designed for wells 8000’ or less. The AOT “DU” Long has a 16” long gripping surface and is designed for deep wells and heavier drill strings.

AOT# 03-114 03-115 03-116 03-117 03-117-SDU 03-118 03-119-SDU

SLIP BODY SIZE 4 1/2” 4 1/2” 5 1/2” 5 1/2” 5 1/2" 7” 7”

TYPE DU/REGULAR DU/LONG DU/REGULAR DU/LONG SDU/LONG DU/REGULAR SDU/LONG

REF# 7613-59 7613-64 7613-60 7613-65

WT. 123.00 150.00 128.00 162.00

7613-62 7313-66

132.00

REPLACEMENT PARTS FOR AOT “DU” REGULAR ROTARY SLIPS AOT# 03-102 03-105 03-101 03-104 03-106 03-107 03-108 03-300

ITEM# 1 2 3 4 6 7 8 9 10

DESCRIPTION REAR HANDLE HINGE PIN FRONT HANDLE LINER RETAINER KEY FRONT HANDLE PIN REAR HANDLE PIN HINGE SPRING ASSY. INSERTS F/DU SEE PAGE 4 SAFETY FLEX HANDLE (UNIVERSAL)

*SPARES 1 2 2 3 2 1 2

#REQ. 1 2 2 3 2 1 2 18 3

REF.# 7613-5195 7613-A-12 7613-A-157 7613-A-52 7613-B-12 7613-C-12 7613-211

WT. 5.00 1.25 4.00 1.50 .25 .38 1.25 5.00

REPLACEMENT PARTS FOR AOT “DU/SDU” LONG ROTARY SLIPS AOT# 03-102 03-105 03-101 03-103 03-106 03-107 03-108 03-300

ITEM# 1 2 3 5 6 7 8 9 10

DESCRIPTION REAR HANDLE HINGE PIN FRONT HANDLE LINER RETAINER KEY FRONT HANDLE PIN REAR HANDLE PIN HINGE SPRING ASSY. INSERTS F/DU SEE PAGE 4 SAFETY FLEX HANDLE (UNIVERSAL)

*SPARES 1 2 2 3 2 1 2

#REQ. 1 2 2 3 2 1 2 24 3

REF.# 7613-5195 7613-A-12 7613-A-157 7613-A-67 7613-B-12 7613-C-12 7613-211

WT. 5.00 1.25 4.00 1.75 .25 .38 1.25 5.00

*RECOMMENDED SPARE PARTS FOR 1 YEAR OPERATION

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INSERTS FOR 4 1/2” “DU” ROTARY TYPE SLIPS AND FOR 4 1/2” “TS-100” SPIDER SLIPS AOT # 03-120

03-121 03-122

03-123 03-124 03-125 03-126 03-127

DESCRIPTION 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4

1/2” 1/2” 1/2” 1/2” 1/2” 1/2” 1/2” 1/2” 1/2” 1/2” 1/2” 1/2” 1/2” 1/2” 1/2” 1/2”

X X X X X X X X X X X X X X X X

4 1/2” 4 3/8” 4 1/4” 4 1/8” 4” 3 3/4” 3 1/2” 3 3/8” 3 1/4” 3 1/8” 3” 2 7/8” 2 3/8” 2 1/16” 1.900” 1.660”

REF.#

WT.

7613-A-81 N/A N/A N/A 7613-FF-81 N/A 7613-C-82 N/A N/A N/A N/A 7613-B-82 7613-A-82 7613-M-82 7613-H-82 N/A

.75 .80 .85 .90 1.00 1.75 1.50 1.65 1.75 1.85 1.90 2.00 2.25 2.50 2.75 2.80

AOT # (SPECIAL FULL FACE INSERTS) 03-210 03-213 03-216 03-219 03-221 03-224 03-227 03-229 03-228 03-230 03-231 03-233 03-236 03-237 03-238 03-239

INSERTS FOR 5 1/2” “DU” ROTARY TYPE SLIPS AND 5 1/2” “TS-100” SLIPS AOT # 03-130 03-131 03-132

03-133 03-134

DESCRIPTION 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5

1/2” 1/2” 1/2” 1/2” 1/2” 1/2” 1/2” 1/2” 1/2” 1/2” 1/2” 1/2” 1/2” 1/2” 1/2” 1/2”

X 5 3/4” X 5 1/2” X 5” X 4 3/4” X 4 1/2” X4 3/8” X 4 1/4” X 4 1/8” X 4” X 3 3/4” X 3 1/2” X 3 1/4” X 3 1/8” X 3” X 2 7/8” X 2 3/8”

REF. #

WT.

N/A 7613-H-81 7613-G-81 N/A 7613-E-81 N/A N/A N/A N/A N/A 7613-E-82 N/A N/A N/A N/A N/A

.85 1.00 1.50 1.75 2.00 2.10 2.15 2.20 2.25 2.28 2.31 2.38 2.45 2.52 2.60 2.80

AOT # (SPECIAL FULL FACE INSERTS) 03-241 03-240 03-243 03-246 03-249 03-247 03-252 03-255 03-258 03-261 03-264 03-266 03-268 03-270 03-275 03-277

INSERTS FOR 7” “DU” ROTARY TYPE SLIPS AOT # 03-140 03-141 03-146 03-142 03-143 03-144

DESCRIPTION 7” 7” 7” 7” 7” 7”

X X X X X X

7” 6 5/8” 5 7/8” 5 1/2” 5” 4 1/2”

REF. #

WT.

7613-EE-81 7613-DD-81 N/A 7613-Z-81 7613-Y-81 7613-W-81

1.25 1.75 3.00 3.25 3.75 4.00

NOTE: “DU” REGULAR REQUIRES 18 INSERTS PER SET “DU” LONG REQUIRES 24 INSERTS PER SET 4 1/2” & 5 1/2” “TS-100” SLIPS REQUIRE 12 INSERTS PER SET * 1 SET INSERTS PER PIPE SIZE RECOMMENDED FOR 1 YEAR SPARES

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