1.Window Mill
 
The WINDOW MILL is designed to mill the window as fast and safe as possible. The design of the Mill will grind the casing like a fine metal powder instead of metal shavings of chips. With the round nose and radial ground design of the WINDOW MILL, it is virtually impossible to mill up the Eaton BOTTOMTRIP WHIPSTOCK.
 
2.Watermelon Mills
 
The WATERMELON MILL is made to run in tandem with other Window Mill is designed in such a way that it can mill up or down. The WATERMELON MILL is also designed to grind up casing into a fine metal powder instead of metal shavings.
 
3.Starting mill
 
The STARTING MILL is a specialized Milling tools used for orientation of the BOTTOMTRIP WHIPSTOCK as well as landing and setting of the BOTTOMTRIP WHIPSTOCK in a predetermined direction. After shearing the setting stus, the milling operation begins, guided by a tapered pilot, creating the initial cutting of the casting window. 

Deflecting tools produced by the company include ground anchor type deflector and hydraulic setting slip type deflector. Hydraulic setting slip type deflector is provided with accurate direction, solid setting and other characteristics.

When reservoir casing is seriously damaged or reservoir is collapsed and buried by sands so that oil wells cannot produce oils, to use the upper casings and reduce costs of drilling ahead, window sidetracking can be made on the upper casing on the top of the reservoir to for new boreholes for oil production.

Window sidetracking in the casing is an important means to drill a deviated well in a well with the lower casings seriously damaged so as to make the well restore production capacity.

Window sidetracking tools mainly include deflector and window milling taper.

Basic Parameters and Performance Indicators

Product Specification and Code	Applicable Casing	Structural Form	Overall Dimension (mm)	Bevel Angle	Bevel Length (mm)	Window Length (mm)	Applicable Well Deviation	Applicable Well Temperature	Setting Method	Connection Thread
DXQ102	5"(ф127)	Common type	ф102×3210	3℃	1730	1600-1800	≤40°	≤200°	Hydraulic setting by ball injecting ★ or direct hydraulic setting	2⅞REG
DXQ102F		Leak protection type	ф102×3720
DXQ114	5½" (ф139.7)	Common type	ф114×3450		1900	1800-2000				NC31★or 2⅞REG
DXQ114F		Leak protection type	ф114×3960
DXQ142	6⅝"(ф168.28)	Common type	ф142×3940		2415	2000-2200				NC38★or 3½REG
DXQ142F		Leak protection type	ф142×4450
DXQ150	7"(ф177.8)	Common type	ф150×4000		2515	2400-2500				NC38★or 3½REG
DXQ150F		Leak protection type	ф150×4200
DXQ160	9⅝"(ф193.68)	Common type	ф160×4200		2700	2500-2700				NC38★or 3½REG
DXQ160F		Leak protection type	ф160×4400
DXQ210	9⅝"(ф244.5)	Common type	ф210×4600	4℃	2600	2700-3000				NC50★or 4½REG
DXQ210F		Leak protection type	ф210×4800
DXQ300	13⅜"(ф339.7)	Common type	ф300×5600		4030	3800-4300				NC50★or 4½REG
DXQ300F		Leak protection type	ф300×5800

 

　　Note: the method with  " ★ " is recommended. If the customer has no special requirements, the product with such specifications will be processed by this method.

　　Text in the table: Product Specification and Code, Applicable Casing, Structural Form, Overall Dimension, Bevel Angle, Bevel Length, Window Length, Applicable Well Deviation, Applicable Well Temperature, Setting Method, Connection Thread, Common type, Leak protection type

　　The company developed the recyclable hydraulic setting deflector based on market demand. Site use effects are very ideal and the product is provided with simple operation, solid setting, high recovery success-rate, reuse and other characteristics. Recyclable deflector consists of deflector, circulating well flushing value and fishing tool.

　　1. Deflector bevel uses the cambered surface subject to ultra- hardening treatment. In the case of window cutting, matching between milling taper and angle build-up body is high and bit weight is easily controlled to reduce bit bouncing and bit jumping as well as downhole accidents. Self- locking mechanism in the tool is more complete. Axial and circumferential omnibearing self-locking is used to greatly improve the reliability of the use of tool.

　　2. Circulating well flushing value is used to complete liquid connection, indirect flushing and normal circulation hydraulic pressure setting in the process of running the tool. The internal diversion mechanism designed specially can ensure smooth liquid connection in the trip-in and flushing and avoid solid particles and debris precipitated into the internal of the deflector so as to improve reliability of tool use.

　　3. Fishing tool uses double fishing mechanisms which are independent and interrelated to greatly improve the success rate of recovery. 

Basic Parameters and Performance Indicators
 

Window milling taper is equipped with the deflector to complete window cutting in the casing.

　　The window milling taper is integrated with window cutting and window repair, which can complete window cutting and repair operations once to improve construction speed, thus meeting site construction requirements properly.

　　In terms of design, tool appearance, alloy cutting edge angle and selection all are subject to optimization design.

Technical Parameters of Window Milling Taper

 

Applicable Casing	Product Specifications	Maximum OD  (mm)	Tool Length  (mm)	Thread Type  (female )
5"(ф127)	KCXZ104	ф104	980	NC26
5½"(ф139.7)	KCXZ118	ф118	1080	NC31
	KCXZ120	ф120	1080	NC31
6⅝"(ф168.28)	KCXZ144	ф144	1150	NC38
	KCXZ150	ф150	1150	NC38
7"(ф177.8)	KCXZ152	ф152	1150	NC38
7⅝"(ф193.68)	KCXZ165	ф165	1200	NC38
9⅝"(ф244.48)	KCXZ215	ф215	1600	NC50
13⅝"(ф339.7)	KCXZ310	ф310	2000	NC50

　Casing mill is a downhole tool used to cut off and mill a certain length of casing for cementing plug prior to directional sidetracking. The technology is provided with the advantages of easy directional sidetracking, simple operations, etc.

　　Structural Features:

　　Adopt the hydraulic piston structure and the design of moving 6 blades by piston movement. The 6 blades can be extended for cutting or milling, with long life and high speed.

　　Cut-off display device is provided. When the blade cuts off the casing, the pump pressure is reduced by about 2MPa.

　　Adopt special hard alloy cutting elements, with easy cutting, long lift and high milling efficiency.