Hole opener
A hole opener is a device used to enlarge the borehole during a well drilling operation.
It can be positioned either above the drill bit or above a pilot run inside the existing borehole.
Usages range from hydrocarbon drilling operations to water drilling
or horizontal drilling.
Hole openers are also used when a hole must be logged, since logging tools generally cannot handle holes larger than 17
and a half inches in diameter.
Hole opener arms have to sustain heavy loads during operations and are generally made of high-grade alloy steel, welded onto a
solid alloy steel body.
Some designs feature replaceable arms, allowing for size changes
but decreasing overall robustness.
Numerous designs exist, in sizes varying from a couple of inches to
above 50".
They can have rolling cutters or drag blades, and can be used for
either direct or reverse circulation applications.
Use of Hole Openers
A hole opener is a fixed diameter bore hole enlargement tool that
is utilized to expand the well bore beyond the original hole size
drilled by the bit.
HOC has many different types of hole openers to meet the various
applications.
Function of Hole Openers
The hole opener is generally used after the pilot bit has drilled
the original hole.
A hole opener consists of a body with roller cones or it could be a
fixed blade that would be dressed with PDC or crushed Carbide.
Typical Application of Hole Openers
A hole opener is then tripped into the well bore to the beginning
depth and then utilized to enlarge the pre-drilled pilot hole.
This is the most typical, however, hole openers may be also
utilized to ensure that the gauge of the pilot hole is intact, this
method is generally known as a wiper trip.
Wiper trips are best for deviated holes where trying to run the bit
back to the end of the section could actually case a side track
scenario in softer formations.
Hole openers may also be utilized in the same drill string as the
bit to perform a function of actually enlarging the well bore or
ensuring that the bit gauge is maintained and clean up any
formation beds that may accumulate throughout the section being
drilled.
Key Features of Hole Openers
A hole opener is a cost effective way to enlarge a pre-drilled
pilot hole or to ensure that the gauge is maintained in a deviated
hole.
A hole opener with a bull nose below helps to mitigate any
potential side track issues in wiper trip applications.
| Product Specifications |
| Diameter | 18'' |
| Blade | 6 |
| Cutter Size | 16mm |
| Nozzle | 6 |
| Gauge Protection | 3'' |
| Operation Parameters |
| Rotary Speed (r/min) | 60-260 |
| Weight on Bit (KN) | 20-160 |
| Flow Rate (lps) | 38-62 |
| Formation | Medium hardness and low compressive strength, such as shale,
limestone, sandstone, gypsum, etc. |
About Us
Certifications
Package&Shipping
FAQ
| Q: You are a trading company or manufacturer ? |
| A: Manufacturer, We are a 100% real factory with over 20 years'
experience in water/oil/gas wells Drill Bits. |
|
| Q: How about your products ? |
| A : Both of tricone bits and PDC bits strictly conform to API 7
requirements and ISO9001. we will do kinds inspections before
delivery, also cover for after-sales service. |
|
| Q: Package Methods ? |
| A: Normally wooden case, also can be steel box; can be customized
if need. |
|
| Q: Payment Terms ? |
| A: we accept T/T, L/C, Paypal, Western Union, etc. |
|
| Q: Can I visit your factory ? |
| A: Yes, we welcome you to our factory all the time, will send
invitation letters if need; also can show our workshop and
warehouse online. |
