ZLCONN PDC Hole Opener
PDC hole opener is a reliable solution for hole enlarging in both soft and medium.
The body is machined of a single block of AISI 4145H alloy steel. The unique design of the body ensures maximum strength and durability. It can withstand loads far beyond those involved during normal drilling operations.
The PDC hole opener is designed for use in soft clays and shales to medium-hard shales and limestones and is particularly effective in sticky formations where balling problems are encountered. Jets with replaceable nozzles continuously clean the tool’s cutting structure, clearing debris buildup and increasing penetration.
A range of PDC cutting structures are available for a variety of formation conditions. The fixed-diameter hole opener is available in sizes 6 1/4 to 42 in. Tools for hole several sizes are designed with special blades. The robust design and construction enable drilling of longer intervals.
In HDD(horizontal directional drilling ),the PDC hole opener can enlarge the hole safety and efficiency,its superior structure can made the hole smooth and more stability,its unique JFA design made the cuttings evacuation more quickly, it can rotary with less torque and penetrate with less stress.
Customs can choose suitable grade of PDC cutters for different formations.
ZLCONN PDC Hole Opener Options
| Bit type | Main bit size(mm) | Rock coefficient | |
| PDC core drill bit | Single pipe | 75/54.5 94/74 113/89 113/109 153/129 | 1-18 |
| Two-pipes | 75/54.5 94/68 | ||
| PDC center drill bit | Concave 3 wing bit | 60 75 94 113 133 | 1-18 |
| Arc pillar
|
60 75 94 113 133 | 4-18 | |
| Many wing scraper | 60 75 94 113 133 133 153 173 190 215 | 1-6 | |
| PDC Indexable drill bit | 153/94 153/113 190/153 190/113 | 1-18 | |
Application of ZLCONN PDC Hole Opener
- Suit for drilling medium to medium-hard formations.
- Evolute asymmetrical blade cutter design and balanced bit load so that bit whirl is prevented.
- Composite gage protection and low torque design improve rate of penetration.
- CFD hydraulic balance design results in better bit cleaning and cutting removal .
- Combined utilization of high performance PDC compacts significantly prolongs bit life
- Higher nozzle counts and/or fixed ports to best serve cleaning,cooling and cuttings evacuation requirements with available hydraulic flows.Allows for higher flow rates with minimal increase in pump pressure.
Feature:Diamonds are impregnated in the matrix behind the PDC cutters
Benefit:Increased footage drilled in abrasive applications.
