During the drilling process, the drill bit works deep underground, and the complex geological conditions often bring great challenges to the drilling operation. For example, changes in the hardness of the rock, abnormal pressure in the formation, and various complex geological structures can cause the drill string to become stuck. Once this kind of stuck phenomenon occurs, if it can not be solved in time, it will not only delay the progress of the project, but also cause damage to the drilling tool, bringing huge economic losses. To address this challenge, the Drill Jar was created.
1.Type of VIGOR drilling jars
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Type of VIGOR drilling jars:
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| Vigor has different types of jars available, including mechanical, full-hydraulic, integral mechanical, hydro-mechanical, and mechanical & hydraulic jars. | |
Techinical Parameters
Full-hydraulic Drilling Jar
|
O.Dmm(In.) |
I.Dmm(In.) |
Connection API |
Max. Upward Jarring Force KN(lbf) |
Max. Downward Jarring Force KN(lbf) |
Max Working Load KN(lbf) |
Tensie Yield Strength kN(lbf) |
Max.Working Torgue kN.m(lbf.ft) |
Torsional Yield Strength kN.m(Ibf.ft) |
Length mm (In.) |
|---|---|---|---|---|---|---|---|---|---|
|
80 (3-1/8) |
25.4 (1) |
23/8REG |
150 (34,000) |
60 (13,500) |
350 (78,000) |
600 (130,000) |
3 (2,200) |
6 (4,400) |
5,550 (218-1/2) |
|
95 (3-3/4) |
31.8 (1-1/4) |
27/8REG |
200 (45,000) |
100 (22,500) |
600 (130,000) |
1000 (225,000) |
4 (2,950) |
8 (5,900) |
5,600 (220) |
|
121 (4-3/4) |
50.8 (2) |
NC38 |
350 (79,000) |
180 (40,000) |
930 (209,000) |
1400 (315,000) |
15 (11,000) |
27 (20,000) |
9,801 (385-7/8) |
|
159 (6-1/4) |
57.2 (2-1/4) |
NC46 |
700 (160,000) |
350 (79,000) |
1600 (360,000) |
2450 (550,000) |
25 (18,000) |
65 (48,000) |
9,830 (387) |
|
165 (6-1/2) |
57.2 (2-1/4) |
NC50 |
700 (160,000) |
350 (79,000) |
1600 (360,000) |
2450 (550,000) |
25 (18,000) |
75 (55,000) |
9,830 (387) |
|
178 (7) |
71.4 (2-13/16) |
NC50 |
800 (180,000) |
400 (90,000) |
2400 (540,000) |
3700 (830,000) |
30 (22,000) |
80 (59,000) |
9,830 (387) |
|
203 (8) |
71.4 (2-13/16) |
65/8REG |
1000 (225,000) |
500 (112,000) |
2800 (630,000) |
4450 (1,000,000) |
35 (25,800) |
145 (100,000) |
9,918 (390-1/2) |
|
229 (9) |
76.2 (3) |
65/8REG |
1200 (270,000) |
600 (135,000) |
3000 (670,000) |
7100 (1,600,000) |
35 (25,800) |
160 (118,000) |
9,908 (390) |
|
241 (9-1/2) |
76.2 (3) |
75/8REG |
1250 (280,000) |
650 (146,000) |
3500 (787,000) |
8100 (1,820,000) |
40 (29,500) |
180 (133,000) |
9,908 (390) |
Jarring Loads of the Hydraulic-mechanical Drilling Jar Unit: KN
| Model | Mpward Jarring Load | Up Jarring Unlock Force | Ex-plant Downward Jarring Load | Hydraulic Load Testing Pulling Force | Time of the Hydraulic Delay |
| VDHM121 | 350 | 200±25 | 150±25 | 220±10 | 30～60 |
| VDHM140 | 450 | 250±25 | 150±25 | 300±10 | 35～90 |
| VDHM159 | 700 | 370±25 | 200±25 | 390±10 | 45～90 |
| VDHM165 | 700 | 400±25 | 220±25 | 420±10 | 45～90 |
| VDHM178 | 800 | 400±25 | 220±25 | 420±10 | 45～90 |
| VDHM197 | 1000 | 440±25 | 270±25 | 460±10 | 45～90 |
| VDHM203 | 1000 | 440±25 | 270±25 | 460±10 | 45～90 |
| VDHM241 | 1250 | 460±25 | 280±25 | 480±10 | 60～120 |
|
Item |
VDHM121 |
VDHM140 |
VDHM159 |
VDHM165 |
|
|
O.D. |
In. |
4-3/4 |
5-1/2 |
6-1/4 |
6-1/2 |
|
I.D. |
In. |
2-1/8 |
2-1/4 |
2-1/4 |
2-3/4 |
|
Connection API |
NC38 |
NC38 |
NC46 |
NC46 |
|
|
Up Jar Stroke |
In. |
9 |
9 |
9 |
9 |
|
Down Jar Stroke |
In. |
6 |
6 |
6 |
6 |
|
Working Torqueft |
lbs |
11,000 |
14,600 |
22,000 |
22,000 |
|
Max. Tensile Load |
lbs |
250,000 |
300,000 |
500,000 |
500,000 |
|
Max. Up Jar Load |
lbs |
78,000 |
100,000 |
157,000 |
157,000 |
|
Max. Down Jar Load |
lbs |
56,000 |
67,200 |
78,000 |
78,000 |
|
Overall Length mm |
mm |
4,500 |
5,008 |
5,007 |
5,256 |
|
Piston Area mm2 |
mm2 |
2,827 |
4,350 |
6,446 |
5,102 |
2. The important role of VIGOR Drilling Jar in drilling operations
Release function
When the Drill string is stuck, the jarring force of the Drill Jar can be applied directly to the stuck point to break the stuck state between the drill string and the formation. This is like giving the stuck drill pipe a "big push" to free it again so that the drilling operation can continue smoothly. This unstuck function greatly reduces engineering delays caused by stuck drilling and improves drilling efficiency.
Protect drilling tools and equipment
If the stuck drill is not solved for a long time, the tension or pressure on the drill tool will continue to increase, which may lead to the deformation and fracture of the drill tool. The Drill Jar promptly jolts the card to avoid this situation. At the same time, it also protects the wellhead equipment and other related drilling equipment, reducing the joint loss caused by drilling tool damage.
Protect drilling tools and equipment
If the stuck drill is not solved for a long time, the tension or pressure on the drill tool will continue to increase, which may lead to the deformation and fracture of the drill tool. The Drill Jar promptly jolts the card to avoid this situation. At the same time, it also protects the wellhead equipment and other related drilling equipment, reducing the joint loss caused by drilling tool damage.
3.VIGOR product advantages
China Vigor Hydraulic and Hydraulic-mechanical Jar are designed for use during drilling operations to apply an intensified force either up or down against a stuck portion of the drill string, it is an ideal tool for directional well and deep well drilling.
VIGOR specializes in R&D, design, manufacturing, and sales of oil drilling tools and equipment. Our extensive manufacturing expertise and comprehensive facilities ensure product quality.welcome to contact us at: info@vigorpetroleum.com or 0086-029-81161513, for more detailed information.
