Integral Construction Hydraulic Pressure Whipstock

Many oil fields in domestic and foreign has reached the mid-final exploitation stage.The old well recovery and the accident well processing gradually increased.Window sidetracking technology has been widely used as the main method to solve the problem.

The conventional whipstock window cutting need decline whipstock and window cutting two steps, operation complex and cost expensive.The integral construction hydraulic pressure whipstock can complete two steps at one time, greatly shorten the construction period, save the construction cost.

The integral construction hydraulic pressure whipstock has simple operation, sealing strong,short window cutting advantages etc .

The integral construction hydraulic pressure whipstock have two parts: whipstock and window cutting milling taper.

• Whipstock

Whipstock adopts hydraulic seat sealing way, strong seat sealing, easy operation. The slant face is cambered surface use hardening treatment, when window cutting, the milling taper highly coincides with the slant face, drilling pressure can be controlled easily, decreased choke off drilling and bit bouncing. Internal adopts special pressure transmission structure, safe and reliable.Tool internal self-locking mechanism will be improved, using the axial and circumferential all-around self-locking, greatly improve the reliability of the tool.

• Window Cutting Milling Taper

In casing, whipstock and window cutting milling cone matched to finish window cutting work. whipstock and window cutting milling taper with optimized design of tool shape, cutting edge Angle, selection of alloy block, make window cutting and maintenance integrally, improve the construction speed, shorten the construction period.

Basic parameters and performance index

applied pipe	Whipstock				Window Cutting Milling Cone			Adapted deviation	Adapted temperature	Sealing type
	Outline     dimensions	Bevel angle	Bevel length	Arc-like diameter	Outline dimensions	Buckle type	clipping pressure
51/2＂ (φ139.7)	φ116x3464	3.2°	1900	φ125	φ116x540	211x230	40KN	≤40°	≤200℃	Direct pressure sealing
7＂ (φ177.8)	φ150x3960	3.2°	2515	φ165	φ150x630	311x330	60KN
95/8＂ (φ244.4)	φ210x4850	4°	2650	φ225	φ210x710	411x430	80KN