Integral-Blade String Spiral Near-Bit Stabilizer for Near-Bit Drillling

• Customization: Available
• After-sales Service: 1 Year
• Warranty: 1 Year
• Manufacturing Process: Forging
• Surface Treatment: API 7K
• Operation Pressure: API 7K
• Material: Alloy
• Lead Time: 2-4 Weeks
• Documents 1: Test Report
• Documents 2: Manual Book
• Painting: Customized
• Transport Package: Wooden Case
• Specification: 1-4 pcs/case
• Trademark: VSP
• Origin: China
• HS Code: 8431431000
• Production Capacity: 4000PCS/Year

Product Description

 

Spiral integral drilling stabilizer
A drilling stabilizer (string and near bit) is a piece of downhole equipment used in the bottom hole assembly (BHA) of a drill string. It mechanically stabilizes the BHA in the borehole in order to avoid unintentional sidetracking, vibrations, and ensure the quality of the hole being drilled.
It is composed of a hollow cylindrical body and stabilizing blades, both made of high-strength steel. The blades  are spiraled, and are hardfaced for wear resistance.
The spiral integral drilling stabilizer - Contains spiraled blades around the tube circumference to provide 360° stabilization. The spiral edges provide an agitating action to prevent sticking.

Integral Blade Stabilizer is integrally made of high strength alloy steel AISI 4145H, usually with 3 blades or 4 blades. The working surface of Integral Blade Stabilizer is provided with carbide insert-extended product life.

Classification based on the position in the string:
a. In-string stabilizer: If a stabilizer is used in the string between two drill collars, it is called an 'In-string stabilizer'. This is the most used configuration, and the stabilizer has a pin-to-box connection to install it within the string. The position and the gauge of the stabilizer are decided based on string vibration simulation and build tendency analysis to suit the well plan requirements.

b.   Near-bit stabilizer: If a stabilizer is installed just above the bit, it is called a 'Near-bit stabilizer'. Since the drill bit has a pin connection, the near-bit stabilizer has box-to-box connections to be able to connect between the pin end of the drill bit and the pin end of the drill collar. A near-bit stabilizer reduces the bit tilt and provides more stability to the bit while drilling. Having a near-bit stabilizer helps in reducing bit whirl and hole crookednes
 

Feature and advantages
•  It is a one piece construction manufactured from high strength alloy steel. 
•  It prevents differential sticking of the drill string by stabilizing the BHA and keeping drill collars and drill pipes away from the borehole wall. This reduces vibration, drill pipe whirl, and wellbore tortuosity; furthermore, the stabilization maintains drilling trajectory whether drilling straight, horizontal, or directional wells.

• Eliminate doglegs: Keep your wellbore trajectory surgically precise, reducing wear on tools and casing.
• Vibration annihilation: Absorb subterranean chaos with anti-shock tech that extends drill string lifespan by up to 40%.
• Adaptive rigidity: From soft shale to granite defiance, stabilizers morph to outmuscle geology.
• Cost-crushing ROI: Slash non-productive time (NPT) by minimizing side tracking, reaming, and tool failures.

Typical parameter:

Hole Size (in)	Standard DC Size (in)	Wall Contact (in)	Blade Width (in)	Fishing Neck Length (in)	Blade Undergage (in)	Overall Length (in)
						String	Near-bit
6" - 6 3/4"	4 1/2" - 4 3/4"	16"	2 3/16"	28"	-1/32"	74"	70"
7 5/8" - 8 1/2"	6 1/2"	16"	2 3/8"	28"	-1/32"	75"	70"
9 5/8" - 12 1/4"	8"	18"	3 1/2"	30"	-1/32"	83"	78"
14 3/4" - 17 1/2"	9 1/2"	18"	4"	30"	-1/16"	92"	87"
20" - 26"	9 1/2"	18"	4"	30"	-1/16"	100"	95"