Double Acting Drilling Jars Bowen Equivalent Hydraulic-Mechanical Drilling-Jars

• Customization: Available
• Customized: Customized
• Certification: ISO, API
• Model NO.: Drilling Jars
• Direction: Bidirectional Drilling Jar
• Structure: Hydraulic
• Color of Drilling Jars: Blue
• Connection of Drilling Jars: Nc
• Payment of Drilling Jars: L/C T/T
• Size of Drilling Jars: Customized
• Transport Package: Wooden Box
• Specification: NC26
• Trademark: Tianhe
• Origin: China
• HS Code: 8431431000
• Production Capacity: 50000PC/Year
• Package Size: 10000.00cm * 30.00cm * 30.00cm
• Package Gross Weight: 1000.000kg

Product Description

Product Description

JYSZ Double Action Hydraulic-Mechanical Drilling Jar
(The drilling jar is a double acting jar) This drilling jar is designed to deliver hydraulic delay when jarring in the up direction, and mechanical release when jarring in the down direction. It provides excellent functional stability and strong jarring forces in both jarring direction. It is used to free stuck drill string components and is recommended for directional/deep wells drilling application.

 

Working principle

• Up Jarring

Lower the drill stem to ensure that drilling jar is closed completely (in locking position). Up jarring is achieved by slowly increasing the lifting force on the drill stem, until there is sufficient pull force to overcome the spring resistance and initial hydraulic time delay. During the time delay, the overpull at surface can be adjusted to vary the desired impact force. When the mandrel reaches the trigger position, there is a sudden release in resistance, the elastic potential energy stored within the drill string will be transmitted to forward up jarring impact energy. After impact, apply a downward force sufficient to close jar in locking position, then repeat the jarring cycle as required.

 

• Down Jarring

Lift and lower the drill stem to ensure that the drilling jar is closed completely (in locking position). Down Jarring is achieved by applying sufficient downward force to compress the spring and store elastic potential energy. When the pressure of the jar is greater than the desired unlocking force, the grapple will slide away from the mandrel to release the locking, performing down jarring action. Repeat the procedures to produce continuous down jarring action.

Product Parameters

Specification-Double Action Hydraulic-Mechanical Drilling Jar

Model	QYSZ121B	QYSZ159C	QYSZ165B	QYSZ172C	QYSZ178B	QYSZ203B	QYSZ241
Product Code	1808000	1810000	1811000	1812000	1813000	1815000	1817000
O.D. (mm)	121	159	165	172	178	203	241
I.D. (mm)	50.8	69	69	69	69	76.2	76.2
API Connection	NC38	NC46	NC50	NC50	NC50	6 5/8 REG	7 5/8 REG
Overall Length (mm)	9100	9450	9450	9450	8890	9700	9700
Total Weight (kg)	530	980	1020	1110	1290	1660	2400
Up Jarring Free Stroke (mm)	127	190	190	190	190	190	190
Down Jarring Free Stroke (mm)	165	190	190	190	190	190	190
Max. Up Jarring Force (kN)	350	700	700	700	800	1000	1250
Max. Down Jarring Force (kN)	200	350	350	350	400	500	650
Max. Tensile Load (kN)	1500	3750	3750	3750	4650	6650	7350
Working Pull Force (kN)	1000	2000	2000	2000	2400	2800	3500
Max. Torque Load (kN•m)	18	75	75	75	91	133	180
Working Torque (kN•m)	10	25	25	25	30	35	40
Pump Area (cm²)	18	26	26	26	51	58	78

Detailed Photos

Photos-Double Action Hydraulic-Mechanical Drilling Jar

Certifications

Packaging & Shipping

Company Profile

 Established in 1973 as a state-owned Mudanjiang Petroleum Machinery Factory. After 50 years a new private company(Tianhe) was registered and established in 2006.   At present, Tianhe Group has 5 sales companies, including Chengdu, Beijing, Shanghai, Yanan, Mudanjiang branches. 2 large factories, in cluding Mudanjiang and Shanghai factory, controlling the important sales territories in China. The company is also actively expanding its business overseas. Currently, more than 50 countries and regions around the world, as well as over 200 well-known oil companies and service company customers, are using products under the Tianhe brand. Tianhe has become one of the most popular Asian oil brands.

Our Advantages

1.The company has over 50 years of professional production experience and is capable of independently manufacturing a complete range of downhole tools, including: drill pipes, drill collars, stabilizers, jars, fishing tools, etc.

2. We have a strict quality control system, conducting strict quality checks from raw materials to finished products.

3.The company has obtained ISO9001 quality system certification and holds API certificates such as 5CT, 5DP, 7-1, Q1, etc.

4.The minimum order quantity is 1, and the delivery cycle can be strictly controlled.

5.Our export products have been recognized by customers in more than 50 countries and regions.

FAQ

1.Q:Are you a factory or trading company?
We are a factory and the Top 3 of oildrilling equipment manufacturer.

2.Q:Where is your factory located? 
We locate in Heilongjiang Province, China.

3. Q:What do your factory do regarding quality control?
From material to products, we inspect each process to keep good quality.
And SGS inspection can be accepted.

4.Q:How about MOQ ?
We have stock of common sizes at hand, so even few ton is accepted.

5.Q:How about payment ?
Both T/T and L/C can be accepted.

6.Q: How long does your warranty?
We can assured the quality within 90 days after receiving the cargoes.