MachineU > China Products > Machinery
Oilfield Wellhead Safety Clamp Secondary Protection Against Dropped Pipe Strings
Oilfield Wellhead Safety Clamp Secondary Protection Against Dropped Pipe Strings
Oilfield Wellhead Safety Clamp Secondary Protection Against Dropped Pipe Strings
Oilfield Wellhead Safety Clamp Secondary Protection Against Dropped Pipe Strings
Oilfield Wellhead Safety Clamp Secondary Protection Against Dropped Pipe Strings
Oilfield Wellhead Safety Clamp Secondary Protection Against Dropped Pipe Strings
Specifications
Processing Type :
Casting
Application :
Oil and gas well drilling and production
Surrounding Temperature :
-29℃~+121℃
Brand Name :
Factory-owned Brand
Tolerance :
+/-0.05mm
Working Temperature :
T-20 (-29℃~+121℃)
MOQ :
Depends on the products
Machine Type :
Drilling Tool
Payment Terms :
Mostly 30%-70%. For some large-scale equipment,the payment term will be discussed.
Place of Origin :
CHINA
Color :
Red/Bule/As your request
Certification :
API, ASEM, etc.
Packaging Details :
Seaworthy packaging
Description

The wellhead safety clamp is used together with conventional slips to prevent drilling tools from falling into the wellbore. While slips alone hold the pipe string, the safety clamp adds a secondary, fail-safe grip. If the pipe begins to slip downward, the clamp automatically tightens its hold, stopping the fall.

How It Works

The clamp consists of multiple flexibly hinged links. Each link contains a spring-retracted, tapered slip. When the clamp is tightened around the pipe, all slips contact the pipe uniformly.

Normal condition – The springs keep the slips lightly retracted. The clamp applies a gentle, uniform grip.

If the pipe starts to fall – Downward pipe movement forces the tapered slips to wedge tighter against the pipe. The more the pipe tries to fall, the harder the slips grip – creating a selfenergizing locking action.

Key Advantages:

Uniform grip – Multiple hinged links distribute force evenly around the pipe, minimizing point loading and reducing pipe damage.

Adjustable diameter – Adding or removing links changes the effective working range. One clamp can cover a wide range of pipe sizes.

Durable construction – All parts are made of heattreated alloy steel for high strength and long service life.


Operation Cautions – Important Safety Rules

To ensure safe and reliable use, follow these guidelines:

#

Caution

a

Select the correct slip size for your drill tool OD.

b

Before each use, check slip teeth for sharpness and secure mounting. Teeth must not be loose, installed backwards, or dirty. Ensure all screws and cotter pins are complete and tight.

c

For wells deeper than 1,000 m – Lifting operations require two elevators. Do not rely on single slips and a single elevator.

d

When lifting drill collars, use slips together with the safety clamp. Position the slips about 50 cm from the female buckle end face, and the safety clamp about 5 cm above the slips.

e

All personnel must stand clear of the slips during rotation to avoid leg or foot injuries.

f

Replace slip teeth when worn down to 75% of original height (i.e., 1/4 wear).

g

If newly installed teeth are still unstable, replace the entire slip body.

h

Keep each hinge part flexible and complete. Replace worn or damaged hinge components promptly.

i

When fully opened, the clamp opening must be at least as large as the nominal drill tool size.

j

After installing a new tooth plate, at least 80% of the teeth must make contact with the drill tool.



Technical Specifications & Available Sizes:

WA-C Series (Larger pipe range)

Model

Pipe Size Range (in)

Pipe Size Range (mm)

Chain Links

Weight (kg)

Weight (lb)

WA-C

3½ – 4⅝

88.9 – 117.5

7

20.9

46

WA-C

4½ – 5⅝

114.3 – 142.9

8

25.0

55

WA-C

5½ – 6⅝

139.7 – 168.3

9

27.7

61

WA-C

6½ – 7⅝

165.1 – 193.7

10

29.1

64

WA-C

7½ – 8⅝

190.5 – 219.1

11

31.3

69

WA-C

8½ – 9⅝

215.9 – 244.5

12

32.7

72

WA-C

9½ – 10⅝

241.3 – 269.9

13

40.0

88

WA-C

10½ – 11⅝

266.7 – 295.3

14

41.8

92

WA-C

11½ – 12⅝

292.1 – 320.7

15

44.0

97

WA-C

12½ – 13⅝

317.5 – 346.1

16

46.3

102

WA-C

13½ – 14⅝

342.9 – 371.5

17

48.6

107

WA-C

14½ – 15⅝

368.3 – 396.9

18

50.9

112

WA-T Series (Smaller pipe range)

Model

Pipe Size Range (in)

Pipe Size Range (mm)

Chain Links

Weight (kg)

Weight (lb)

WA-T

1⅛ – 2

28.6 – 50.8

4

16.3

36

WA-T

2⅛ – 3¼

54.0 – 82.6

5

18.2

40

WA-T

3½ – 4½

88.9 – 114.3

6

20.0

44

Note: The number of chain links increases with pipe size. Adding or removing links adjusts the clamp to fit different ODs within each range.

Send your message to this supplier
Send Now

Oilfield Wellhead Safety Clamp Secondary Protection Against Dropped Pipe Strings

Ask Latest Price
Product Detail
Processing Type :
Casting
Application :
Oil and gas well drilling and production
Surrounding Temperature :
-29℃~+121℃
Brand Name :
Factory-owned Brand
Tolerance :
+/-0.05mm
Working Temperature :
T-20 (-29℃~+121℃)
Contact Supplier
Oilfield Wellhead Safety Clamp Secondary Protection Against Dropped Pipe Strings
Oilfield Wellhead Safety Clamp Secondary Protection Against Dropped Pipe Strings
Oilfield Wellhead Safety Clamp Secondary Protection Against Dropped Pipe Strings

Beijing Sunrise Technology Co., Ltd.

Verified Supplier
1 Years
beijing, beijing
Since 2012
Business Type :
Trading Company, Exporter
Main Products :
Oilfield Wellhead Equipment, High Pressure Manifold Fittings, Oilfield Downhole Tools
Employee Number :
20~50
Certification Level :
Verified Supplier
Discover similar products
View More

Find Similar Products By Category:

Supplier Homepage Products Oilfield Wellhead Equipment
MachineU China Products Machinery
Contact Supplier
Submit Requirement