Understanding Bottom Hole Pressure In Drilling: An …
Bottom hole pressure (BHP) is a key concept in drilling operations that measures the pressure at the bottom of a wellbore. It serves as a crucial parameter for understanding the behavior of fluids within the well and can provide valuable insights into the formation characteristics and overall drilling performance.
The case for blasthole drill automation
Make adjustments to the downstream load-and-haul operation and/or processing plan; The drill automation journey is one that can be taken in incremental steps. Building blocks matched to needs . drill automation technologies are laid out in a building block approach to allow mines to enter at different levels depending on specific …
Lesson 5.4: Drilling | GEOG 000
Lesson 5.4: Drilling. We looked briefly at drills in Lesson 5.1, as part of an overall survey of the unit operations for winning the ore. I showed you some pictures of different types of drills, and we talked about a few …
9.3: The Drilling Process | PNG 301: Introduction to …
Set the Conductor Casing: Prior to the arrival of the drilling rig, an Auger Unit (in hard rock regions) will drill a large diameter hole capable of accommodating 18 in. to 36 in. conductor casing (see Figure 9.16). In soft rock regions or at offshore locations, a diesel hammer may be used to hammer the conductor casing into place.
Raise Bore pilot holes
There are three types of raise boring methods utilised in the mining production and development industry: Standard Raise boring, Down-Reaming, and Box-Holing. These all commence with the process of drilling a pilot hole (small diameter drill hole) from base level to the required level. Once the pilot hole is achieved to plan, a large diameter ...
Blasting Techniques Used in Underground and Opencast Mines | Mining
Pull per round – 1.06 m. Coal yield/kg of explosive – 2.0 te (soligex) Coal yield/detonator – 0.9 te. One driller and two helpers drill 60-70 holes in a shift of 8 hours; one shot firer, 2 explosive carriers and 1 stemming material carrier constitute the blasting crew and fire nearly 60 shots in a shift of 8 hours.
Underground drilling | Epiroc US
Epiroc's rugged face drilling rigs are built for blast hole drilling in underground mining and tunneling with a wide range of cross sections. Precise production drills Simba long-hole drilling rigs offer a variety of feed lengths, positioning configurations and rock drills built for quick setup and accurate hole placement.
Blasthole Drilling Operations | The Driller
Drilling requirements for blasthole projects need to be carefully weighed in order to select the proper drill rig to meet all the needs of a particular operation. Considerations include: total drill-hole depth anticipated, geology and surface terrain condition, production requirements, types of explosive products to be used,
Tripping pipe | Rig Operations & Procedures
The tripping pipe can be defined as running in or pulling out of the hole with the drill string. In this article, we have prepared a complete guide for who needs to learn its operations on the surface and who needs to understand its procedures to prevent any unforeseen problems. See more
Types of Drilling Methods used in Mining
In this article we will discuss about the types of drilling methods used in mining. The types are: 1. Percussive Drilling 2. Rotary Drilling. Method # 1. Percussive Drilling: In this method which is the oldest one of drilling, the hole is drilled by striking a number at short in intervals on the rock by a chisel-type tool and between the blows ...
Diamond drill hole water cut off
A mining contractor was developing an underground ramp through otherwise competent rock conditions when blasting exposed an ungrouted diamond drill hole from the surface that flooded the heading a substantial distance from the face. The mining company engaged Peter White to travel to the site and supervise grouting operations to seal the ...
blowpipe
Straight blow pipe inserted in drill hole. Boot covering drill hole that is to be cleaned, to help direct the blowback away fro m the miner. Blow pipes are made from pipe and are used to direct a high velocity stream of …
DM45-series blasthole drills
The DM45 is designed to handle 4½ in. up to 7 in. drill pipes. For the low pressure version, DM45 LP, 110 psi (7.6 bar) can be used for rotary drilling of blastholes up to 9 in. (229 mm) in diameter. On the high pressure version, DM45 HP, 350 psi (24 bar) can be used for up to 6½ in. DTH hammers and max 8 in. bit diameter.
Tripping Operations
Tripping Operations - Best Practices. 1. Preparation. The Drilling Supervisor shall approve and provide written instructions to the Contractor Toolpusher prior to any trip out of the …
Common tools and equipment used in drilling and blasting …
Jackhammers are compressed air-powered, hand-held machines. They are used to drill holes up to 3m in length in both development and stoping. Coal drills or electric augers are electrically-powered, rotary machines with a spiral steel and used to carry out dry drilling in coal mining and soft rock. Drifters are similar to jackhammers …
Mine Tailings Pump Applications
One of the main advantages of a cable-deployed pump is that it can be used in deep, inaccessible areas where other types of pumps would not be able to reach. In mining operations, this is often the case when dealing with underground mines, where there is a need to pump out water or other liquids that have accumulated in the mine's lower levels.
How to Drill and Construct Deep Water Borehole
Suspend the collar and bit in the borehole using the hoist or sand line. Support the drill collar in the hole using slips. Step 2. Clean and lubricate the threads on the Kelly bar and makeup the Kelly to the threads. (On top head drive rigs, you makeup the drill string to drive shaft of drive head). Step 3.
Drilling machinery | Types, Uses & Benefits
drifter drill. air drill. rock drill. rotary drill. drilling machinery, equipment used to drill holes in the ground for such activities as prospecting, well sinking (petroleum, natural gas, water, and salt), and scientific …
Drilling Jar Types, Calculations & Operation
Up And Down Jarring Operations; Setting The Drilling Jar Prematurely; Coming Out Of The Hole; Drilling Jar Calculations Jar Open Force Calculations. The jar pump open force (POF) (also called jar …
Optimized design of drilling and blasting operations …
1. Introduction. Mining activity is mostly represented by these four main operations: drilling, blasting, loading and hauling. For a proper mine planning and …
Pumping Out Of Hole | Merlin ERD
Summary. Lubricating or pumping out of hole can be managed safely provided that risks are identified and mitigated. Keeping AVs as low as possible, whilst managing swab or metal displacement is necessary to ensure that cuttings build up ahead of the BHA is minimised, which in turn minimises the chances of stuck pipe events in this …
What are the operations carried out by Drilling Machine?
The operation of drilling consists of producing a hole in an object by forcing a rotating drill against it. The same result is carried out in some machines by holding the drill stationary and rotating the work as on the lathe. (b)Boring :-. It is the operation of enlarging a hole that has already been drilled or bored with a single point tool.
The Basics of High-Speed EDM Hole Drilling
1.00". 90 to 100 seconds. .040". 2.75". 3 minutes. Observing the aforementioned times explains why high-speed EDM hole drilling has become an alternate method to conventional machining in mold manufacturing. In addition, this method of drilling produces burr-free holes, which results in the elimination of secondary deburring processes.
Jet bore mining
Jet bore mining is an in situ, remote controlled process, meaning that the personnel generally stay above ground, decreasing the costs of removing overburden and increases the safety of the operation. [1] This process is also referred to as borehole mining, hydraulic or water jet borehole mining, water jet mining, underground or subsurface ...
Boreholes | SpringerLink
Definition. A narrow hole drilled to establish the nature of, sample, test, or monitor soil, bedrock or contained fluids and gases or for abstraction of water or minerals. Borehole drilling has a long history. By at least the Han Dynasty (202 BC–220 AD), the Chinese used deep borehole drilling for mining and other projects.
6 Common Blasting Methods in Open Pit Mining | DASWELL
6 common blasting methods in open pit mining Shallow hole blasting The diameter of the blast hole used in shallow hole blasting is smaller, generally about 30 to 75 mm. The depth of the blasthole is generally less than 5 meters, sometimes up to about 8 meters. The hole depth can be increased if a rock drill jambo is used to drill the hole.
12.25" guidelines for tripping, making connections and back …
Back-reaming. Back-reaming should be used as the last resort and with the same flow rate that was used during drilling. Back-ream for 5m maximum, circulate cuttings clear of the …
STANDARD OPERATING PROCEDURE
ii)Start drilling operation i)The operator will not allow any un-authorized person to operate the machine. ii)Lower down the rotary head attachment till bit touches ground. Give feed, rotation & operate water pump. Drill Operator Drill Operator DOC.NO. WI/OPRN/01 6 Changing of drill rod(Rod attachment & detachment) OH&S-
Beginners Guide to Stope Mining | An Underground Miner
Stoping is the method used in mining operations of extracting ore and waste rock from underground mines that create openings called stopes. There are several types of stoping that vary based on the mining techniques used to move ore and waste throughout the stope. Stoping occurs in two steps: developing the ore blocks to prepare …
2018 Pump Hoist Pulstar P-10 | Drilling Equipment Resources
DESCRIPTION. Conquer your well drilling and service challenges with this powerful 2018 Pump Hoist Pulstar P-10. It features a reliable 2018 Dodge Ram 5500 regular cab truck for easy transport and maneuverability at the worksite. The truck comes equipped with a heavy-duty Pulstar P-10 pump hoist, ideal for handling pumps and other equipment ...