High Quality API Downhole Tool Circulation/Bent/Wear Sub

• After-sales Service: Support
• Warranty: Support
• Manufacturing Process: CNC Milling
• Surface Treatment: Spray-Paint
• Operation Pressure: Atmospheric Pressure
• Material: Alloy
• Model NO.: SUB
• Connection: Nc
• ID mm: 57-71mm
• Length mm: 500-650
• Brand: Tianhe
• Transport Package: Wood Case
• Specification: see the detail specification
• Trademark: TIANHE
• Origin: China
• HS Code: 8208101900
• Production Capacity: 50000piece/Year

Product Description

Product Description

The oriented bent sub is a major power deflection tool having a fixed angle deviated from the low end thread of the bent sub to the axial line of drill stem. Under the application of oriented bent sub the power drill tool give the bit a constant lateral force to ensure that the bit can cut on the well wall laterally and further drill into a curved well trace.

Operation method:After the bit and oriented sub are connected and screwed, measuring of the angle between the nozzle of bit and oriented key of oriented bent sub shall be done; After run in drill tool, calculate out the azimuth of nozzle of bit according to the azimuth of oriented key determined at a single point by drift indicator; Change the nozzle of the bit into required azimuth, then lock in rotary and start pump drilling to cut in; During deflecting, using this approach that deflects while lightly pressing and crowning the drill to help deflection; After deflected for 2 to 3 meters, drill in 4 to 5 meters with light pressure and slow rotation; Repeat above mentioned operations for several times, when the angle of deviation is up to the expected requirement deflecting in can be done smoothly by reducing drill pressure and increasing rotation speed.

The Circulating Sub is connected between wellhead pipe string and ground circulating system. When casing is running or completed, the circulating sub can be connected to provide fluid circulation. According to the application, circulating sub is connected between Kelly and casing or between casing and a hose.

The circulating sub during running casing is equipped with casing pin thread on one end and DP thread, DP box thread or union thread on the other

 

Wear sub:During drilling operation, major wear and tear wear often take place between drill pipes and casings. Wear Sub is used to avoid the wear between drill pipes, tool joints and casings. With features such as compact structure and easy operating, Wear sub can prolong the service life of drill pipe and casing and reduce the vibration and trembling of drilling tools. It can also limit the contact friction between metals.

TIANHE wear sub consists of a highly wear rubber sleeve, a metal stiffening liner and a sub body. The rubber sleeve is installed in the middle of sub body and some clearance is given to allow sleeve to rotate freely. The rubber sleeves are made of rubber mixtures with good wear resistance. During drilling operation, the rubber sleeve and sub body can make a relative rotation. The rubber sleeve O.D is larger than drill pipe tool joint O.D, therefore the tool joint and drill pipes cannot come in contact with casing. The rubber sleeve on saver sub will first contact with casing. When friction between rubber sleeve and casing takes place, wearing can be reduced due to the rubber sleeve wear resistance and softness. Usage of tool joints of drill pipes and drill string tools will also be reduced.

Product Parameters

Specifications - Circulating Sub With Drill Pipe Thread

Thread/ Model			I.D. (mm)	Length (mm)
Drill pipe box connection	Casing thread	Product  Code
NC38	5 BTC	J030701	57	580
	5 LTC	J030702
	5 STC	J030703
NC38	5 1/2 BTC	J030801	57	580
	5 1/2 LTC	J030802
	5 1/2 STC	J030803
NC50	7 BTC	J031201	71	610
	7 LTC	J031202
	7 STC	J031203
NC50	9 5/8 BTC	J031801	71	610
	9 5/8 LTC	J031802
	9 5/8 STC	J031803
NC50	10 3/4 BTC	J031901	71	610
	10 3/4 STC	J031902
NC50	13 3/8 BTC	J032001	71	650
	13 3/8 STC	J032002

Specifications - Circulating Sub With Hammer Union Thread

Thread/ Model			I.D. (mm)	Length (mm)
Union thread	Casing thread	Product  Code
2″1502 Union	5 BTC	J040701	50.8	500
2″1502 Union	5 1/2 BTC	J040801	50.8	500
2″1502 Union	7 BTC	J041201	50.8	500
	7 LTC	J041202
2″1502 Union	9 5/8 BTC	J041801	50.8	500
	9 5/8 LTC	J041802
2″1502 Union	10 3/4 BTC	J041901	50.8	560
	10 3/4 STC	J041902
2″1502 Union	13 3/8 BTC	J042001	50.8	610
	13 3/8 BTC	J042002

Specifications - Oriented Bent sub

Model	Product  Code	O.D.mm (in)	Connection		Bent Angle (Degree)	I.D. of Oriented Sleeve (mm)
			Box	Pin
DZT89	J0802010	89 (3 1/2)	NC26	NC26	2°	36
DZT105	J0804010	105 (4 1/8)	NC31	NC31	2°	36
DZT127	J0807010	127 (5)	NC38	NC38	2°	36
DZT159	J0808010	159 (6 1/4)	NC46	NC46	2°	50
DZT165	J0809010	165 (6 1/2)	NC50	NC50	2°	50
DZT178	J0812010	178 (7)	5 1/2 FH	5 1/2 FH	2°	50
DZT203	J0814010	203 (8)	6 5/8 REG	6 5/8 REG	2°	50

Specifications - Wear Sub

Specification	Body O.D.(mm)	Sub O.D.(mm)	I.D.(mm)	Connection	Product  Code
7" Casing	121	143	38.1	3 1/2 IF	J1408010
9 5/8" Casing	168	190	71.4	4 1/2 IF	J1413010
	178	197	71.4	5 1/2 FH	J1413020
10 3/4" Casing	180	225	71.4	4 1/2 IF	J1417010
				5 1/2 FH	J1417020
13 3/8" Casing	203	285	71.4	5 1/2 FH	J1420010

Certifications

Company Profile

Tianhe Oil Group Huifeng Petroleum Equipment Co., Ltd is a modernized medium-scale enterprise specialized in production of oil and gas tools.

As an API-Certified established manufacturer and supplier of a comprehensive range of downhole equipment with related accessories, we are committed to providing the highest Quality products for the Petroleum and natural gas industry since 1973.


Tianhe Oil Group strongly believes and promotes Total Quality Management, implement the ISO quality management system and HSE management system and API Standard, which has been deeply implanted into every person's thought and carried out into every aspect of work.

Our manufacturing facilities are well equipped with four automated induction heat treatment lines and dozens of other types of heat treatment ovens and well furnaces to ensure full coverage of heat treatment requirements by different products to achieve the required mechanical properties.

In order to ensure the quality consistency and interchangeability of high precision components, Tianhe has introduced WFL 5-axis Linkage Turning & Milling Machining Center from Austria, Mazak's turn milling machining center from Japan and the Haas vertical machining center from USA. These processes are facilitated with precise quality inspection equipment such as the Brunker OES Metal Analyzers from Germany, Ultrasonic and Magnetic Powder Flaw Detector and high precision Hexagon Three Coordinate Measuring Machine and Farco Portable Three Coordinate Measuring Machine.

So far, Tianhe Oil Group has established strong business relationships with over 200 international oil & gas companies in supporting the top 50 oil producing countries.

We take pride in delivering superior performances and reliability. Our objective is to exceed your expectations, improve your economics and be an integral part of your strategies.